COCHISE COUNTY MAR 4, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ***** | 105 * | ***** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 3 v = Heat Units accumulated from JAN 1 - FEB 25 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about normal. HISTORICAL STATISTICS -------------------------------- Last Week : FEB 26 - MAR 3 This Week : MAR 4 - MAR 10 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 63 32 23 20 ---- Normal 67 34 23 28 Recorded 63 27 18 13 0.00 2011 72 34 14 38 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 44.6 FEB 28 ; Min = 34.7 MAR 3 WEATHER UPDATE -------------------------------- --Expect sunny & very warm conditions through Tuesday. Strong winds will develop Tuesday as a dry storm system moves across northern AZ. Much cooler temperatures are expected mid-week with the passage of this storm. A gradual warming trend will develop late in the week with a return to normal temperatures by the week- end. No precipitation is forecast for this week. --Planting windows are open in Yuma County. Windows open when annual heat unit accumulation (AHU) exceeds 400 & close when AHU exceeds 700, 800 or 1000 depend- ing on maturity group. Soil temperatures & the forecast should monitored before planting. Minimum soil temperatures (~8am) should exceed 60F prior to planting. Such conditions typically result when minimum air temperatures remain above 47F. COCHISE COUNTY MAR 11, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ****** | 122 * | ****** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 10 v = Heat Units accumulated from JAN 1 - MAR 3 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 2 days behind normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 4 - MAR 10 This Week : MAR 11 - MAR 17 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 67 34 23 28 ---- Normal 68 35 24 33 Recorded 63 30 15 18 0.00 2011 79 37 21 57 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 47.5 MAR 7 ; Min = 37.6 MAR 4 WEATHER UPDATE -------------------------------- --Sunny & warm with light winds through Thursday. Winds should increase Friday in advance of a Pacific storm system that may produce rainfall over the weekend. Cooler weather is expected this weekend & early next week following the passage of this storm. --Planting windows open when annual heat unit accumulation (AHU) exceeds 400 & close when AHU exceeds 700, 800 or 1000 depending on maturity group (see graph). Monitor soil temperatures & the weather forecast before planting. Minimum soil temperatures (occur~8am) should exceed 60F prior to planting. Soil temperatures generally approach this 60F level at 8am when minimum air temperatures (at sun- rise) remain above 47F. COCHISE COUNTY MAR 18, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ******** | ** 163 * | ******** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 17 v = Heat Units accumulated from JAN 1 - MAR 10 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 2 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 11 - MAR 17 This Week : MAR 18 - MAR 24 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 68 35 24 33 ---- Normal 70 36 23 39 Recorded 74 30 9 41 0.00 2011 70 34 19 31 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 46.4 MAR 17 ; Min = 38.3 MAR 11 WEATHER UPDATE -------------------------------- --The weekend storm will remain in place through Monday, producing cold & damp weather across AZ. High pressure moves in beginning Tuesday, resulting in clear skies & a rapid warming trend. Above normal temperatures will return by Thursday & continue through the coming weekend. --Planting windows open when annual heat unit accumulation (AHU) exceeds 400 & close when AHU exceeds 700, 800 or 1000 depending on maturity group (see graph). Monitor soil temperatures & the weather forecast before planting. Minimum soil temperatures occur ~8am & should exceed 60F prior to planting. Soil temperatures approach 60F at 8am when minimum air temperatures (at sunrise) remain above 47F. If planting this week, give the soils adequate time to rewarm to proper levels. COCHISE COUNTY MAR 25, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ********* | ** 187 ** | ********* | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 24 v = Heat Units accumulated from JAN 1 - MAR 17 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 1 day behind normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 18 - MAR 24 This Week : MAR 25 - MAR 31 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 70 36 23 39 ---- Normal 69 36 23 36 Recorded 64 30 26 24 0.15 2011 79 41 24 65 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 51.4 MAR 18 ; Min = 32.5 MAR 20 WEATHER UPDATE -------------------------------- --Expect cooler temperatures Monday as a weakening storm system passes north of AZ. No precipitation is expected with this system. Sunny, warm & dry conditions will return by mid-week & continue through the weekend. Longer term, forecast models indicate the possibility of another cold storm system early next week. --Planting windows are open in central & western AZ (see graph). Growers in Yuma Co. should complete their plantings of full season varieties as soon as possible & before HU accumulation exceeds 700. Monitor soil temperatures and the weather forecast before planting. Minimum soil temperatures occur ~8am & should exceed 60F prior to planting. Soil temperatures approach 60F at 8am when minimum air temperatures (at sunrise) remain above 47F. COCHISE COUNTY APR 1, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ************ | **** 245 *** | ************ | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - MAR 31 v = Heat Units accumulated from JAN 1 - MAR 24 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 5 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : MAR 25 - MAR 31 This Week : APR 1 - APR 7 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 69 36 23 36 ---- Normal 72 38 24 45 Recorded 79 38 21 58 0.00 2011 75 43 25 54 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 52.5 MAR 31 ; Min = 48.4 MAR 27 WEATHER UPDATE -------------------------------- --A dry storm system will exit AZ Monday, resultng in a cool day with moderate winds. Mild & dry conditions return by mid-week as high pressure redevelops over AZ. Windy & slightly cooler temperatures are expected this weekend as a trough of low pressure develops over the West. This next system is expected to be dry, but growers should monitor this system closely if planning to plant this week. --Planting windows are open in central & western AZ (see graph). Growers should complete their plantings of full season varieties before HU accumulation exceeds 700. Plant population (PP) should range from 25,000-50,000 plants/a. To assess, count the number of plants in 1/1000 a & multiply by 1000. Row length equal to 1/1000 a: 40" row = 13'1", 38" row = 13'9", 36" row = 14'6", 30" row = 17'5". COCHISE COUNTY APR 8, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ************** | ***** 285 **** | ************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 7 v = Heat Units accumulated from JAN 1 - MAR 31 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 4 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : APR 1 - APR 7 This Week : APR 8 - APR 14 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 72 38 24 45 ---- Normal 75 38 22 51 Recorded 73 34 15 40 0.00 2011 73 34 18 42 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 53.1 APR 1 ; Min = 46 APR 3 WEATHER UPDATE -------------------------------- --Sunny, warm & dry through mid-week. Unsettled & cooler weather is forecast to develop by Thursday & continue through the weekend. A cold & potentially wet storm system will drop into AZ this weekend. Present forecasts indicate rainfall is more likely in northern production areas. --Monitor soil temperatures & the weather forecast before planting. Minimum soil temperatures (at~8am) should exceed 60F prior to planting. Soils approach 60F at 8am when minimum air temperatures (at sunrise) remain above 47F. --Plant population should range from 25,000-50,000 plants/a. To assess, count the number of plants in 1/1000a & multiply by 1000. Row length equal to 1/1000a: 40"row = 13'1", 38"row = 13'9", 36"row = 14'6", 30"row = 17'5". COCHISE COUNTY APR 15, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ***************** | ****** 338 ****** | ***************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 14 v = Heat Units accumulated from JAN 1 - APR 7 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 4 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : APR 8 - APR 14 This Week : APR 15 - APR 21 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 75 38 22 51 ---- Normal 77 41 24 59 Recorded 74 41 23 52 0.14 2011 82 46 24 77 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 56.1 APR 11 ; Min = 51.8 APR 13 WEATHER UPDATE -------------------------------- --High pressure will develop over AZ this week, resulting in above normal temp- eratures by Tuesday. Expect sunny, warm & dry conditions with light winds. Day- time temperatures in central & western AZ should reach the 90s by mid-week. --Monitor soil temperatures before planting. Minimum soil temperatures (at~8am) should exceed 60F prior to planting. Soils approach 60F at 8am when minimum air temperatures (at sunrise) exceed 47F. Central AZ growers should finish planting full season varieties as soon as possible as HU accumulation is now approaching 700 (see graph). Plant population should range from 25,000-50,000 plants/a. To assess, count the number of plants in 1/1000a & multiply by 1000. Row length = to 1/1000a: 40"row = 13'1", 38"row = 13'9", 36"row = 14'6", 30"row = 17'5". COCHISE COUNTY APR 22, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ******************** | ******** 401 ******* | ******************** | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 21 v = Heat Units accumulated from JAN 1 - APR 14 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 4 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : APR 15 - APR 21 This Week : APR 22 - APR 28 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 77 41 24 59 ---- Normal 78 42 26 65 Recorded 79 38 23 62 0.00 2011 79 45 22 65 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 59 APR 21 ; Min = 42.1 APR 15 WEATHER UPDATE -------------------------------- --Sunny & hot weather will continue through Wednesday. A trough of low pressure will move into the area late Wednesday & Thursday, resulting in clouds, cooler temperatures & a slight chance for rain. The cooler weather will be short-lived as sunny & warmer conditions will return by the weekend. --Growers in central & western AZ should finish planting as soon as possible as HU accumulation is approaching the end of the planting window (see graph). Avoid late planting if possible. Long range forecasts indicate a strong bias for above normal temperatures during monsoon. Plant population should range from 25,000- 50,000 plants/a. To assess, count plants in 1/1000a & multiply by 1000. Row length=to 1/1000a: 40"row=13'1", 38"row=13'9", 36"row=14'6", 30"row=17'5". COCHISE COUNTY APR 29, 2012 COTTON PLANTING DATE ADVISORY +-------------------------------------------------------------------------+ | PINK BOLLWORM SUSCEPTIBILITY * | +---------+------------+-----------------------------------------+ | | HIGH | MEDIUM | LOW | | | v | ************************* | ********** 491 ********** | ************************* | | ^ normal | | PLANTING WINDOWS | | | Short Season ---------------| | | | Medium Season ----| | | | Full Season | | +---------+---------+---------+---------+---------+---------+---------+---+ 0 200 400 600 800 1000 1200 1400 HEAT UNITS (HU) ACCUMULATED FROM JAN 1 - APR 28 v = Heat Units accumulated from JAN 1 - APR 21 * HIGH:>50%, MEDIUM:25-50%, LOW<25% Spring Emergence after Susceptible Square HEAT UNITS -------------------------------- HUs are running about 7 days ahead of normal. HISTORICAL STATISTICS -------------------------------- Last Week : APR 22 - APR 28 This Week : APR 29 - MAY 5 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 78 42 26 65 ---- Normal 81 43 24 73 Recorded 86 46 27 89 0.00 2011 81 41 12 68 SOIL TEMPERATURES -------------------------------- Last Week's 8am Soil Temp: Max = 63.9 APR 26 ; Min = 58.5 APR 27 WEATHER UPDATE -------------------------------- --High pressure will dominate AZ weather this week, producing clear skies, warm temperatures & low humidity. Temperatures should average ~2 degrees above normal. --Central AZ: Finish planting as soon as possible. HU accumulation is approaching the end of the planting window (see graph). Avoid late crops: summer forecasts indicate a strong bias for above normal temperatures during the monsoon season. --Western AZ: 1st fruiting branches (pinhead square,PHS) typically form at nodes 5-7 at ~700 HUs after planting. N fertilizer should be applied between PHS & peak bloom. For more details go to: http://cals.arizona.edu/pubs/crops/az1200.pdf. --Eastern AZ: Plant population should range from 25,000-50,000 plants/a. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY MAY 6, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | | 4/1 ******* 326 +5 days | v | | | | | | | | 4/15***** 233 +5 days | | | | | | | | | 5/1 * 58 +1 day | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 5 v = Heat Units on APR 28; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 571; Last year = 611; Normal = 554 HUs since Jan 1 are running about 7 days ahead of normal. HU last week = 80 HISTORICAL STATISTICS -------------------------------- Last Week : APR 29 - MAY 5 This Week : MAY 6 - MAY 12 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 81 43 24 73 ---- Normal 84 47 27 86 Recorded 84 44 24 80 0.00 2011 81 43 21 67 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 Water Use (last week): .39" .39" .39" WEATHER UPDATE -------------------------------- --A low pressure system will move into AZ Monday & exit the state by Wednesday. This system will bring cooler & windy conditions early in the week, & is expect- ed to pull moisture into eastern AZ resulting in partly cloudy conditions with a chance for scattered showers on Tuesday & Wednesday in Graham & Cochise Co. Very hot conditions are expected to develop across AZ by the latter half of the week. --This is the 1st week of Cotton Development Advisories in central & eastern AZ. The 1st development stage of interest is pinhead square (PHS) which marks the transition from vegetative to reproductive growth. 1st fruiting branches should develop at nodes 5-7 at ~700 HUs after planting. N fertilizer should be applied between PHS & peak bloom. Details @ www.cals.arizona.edu/pubs/crops/az1200.pdf. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY MAY 13, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | | 4/1 ******** 395 +3 days | v | | | | | | | | 4/15****** 302 +3 days | | | | | | | | | 5/1 *** 127 0 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 12 v = Heat Units on MAY 5; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 640; Last year = 678; Normal = 640 HUs since Jan 1 are running about 5 days ahead of normal. HU last week = 68 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 6 - MAY 12 This Week : MAY 13 - MAY 19 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 84 47 27 86 ---- Normal 85 49 30 93 Recorded 80 44 29 68 0.24 2011 77 43 26 56 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 Water Use (last week): .38" .38" .38" WEATHER UPDATE -------------------------------- --High pressure will control AZ weather this week. Expect sunny, hot & dry weather with low-moderate winds. Temperatures should average ~3F above normal. --1st post-plant irrigations (PPI) are typically applied at 800-1000 HUs after planting. Soil type plays a role in this decision with earlier PPIs in coarse textured soils & later PPIs in fine textured soils. More details are available at www.cals.arizona.edu/pubs/crops/az1204.pdf. --The 1st development stage of interest is pinhead square (PHS) which marks the transition from vegetative to reproductive growth. 1st fruiting branches should develop at nodes 5-7 at ~700 HUs after planting. N fertilizer should be applied between PHS & peak bloom. Details @ www.cals.arizona.edu/pubs/crops/az1200.pdf. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY MAY 20, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | | 4/1 ********** 507 +5 days | v | | | | | | | | 4/15******** 414 +5 days | v | | | | | | | | 5/1 ***** 239 +2 days | | | | | | | | | 5/15** 86 +3 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to MAY 19 v = Heat Units on MAY 12; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 752; Last year = 734; Normal = 733 HUs since Jan 1 are running about 2 days ahead of normal. HU last week = 112 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 13 - MAY 19 This Week : MAY 20 - MAY 26 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 85 49 30 93 ---- Normal 86 49 30 96 Recorded 88 53 27 112 0.00 2011 88 46 23 93 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): .5" .5" .5" .5" WEATHER UPDATE -------------------------------- --High pressure will dominate AZ weather early this week, producing near record heat on Monday & Tuesday. A series of storm systems are forecast to move across the Great Basin later in the week, resulting in windy & cooler (near normal) conditions. No precipitation is expected with these storm systems. -- Growers should closely monitor soil moisture & avoid crop water stress. First post-plant irrigations (PPI) are typically applied at 800-1000 HUs after planting with earlier PPIs in coarse textured soils & later PPIs in finer textured soils. High rates of evaporative demand (ED) can also result in earlier PPIs. Last week's hot & dry weather produced high rates of ED. High ED is expected again this week. More details on PPIs are available at www.cals.arizona.edu/pubs/crops/az1204.pdf. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUN 3, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | | 4/1 ************** 719 +4 days | v | | | | | | | | 4/15************* 626 +4 days | v | | | | | | | | 5/1 ********* 451 +2 days | v | | | | | | | | 5/15****** 298 +3 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 2 v = Heat Units on MAY 26; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 964; Last year = 931; Normal = 938 HUs since Jan 1 are running about 3 days ahead of normal. HU last week = 102 HISTORICAL STATISTICS -------------------------------- Last Week : MAY 27 - JUN 2 This Week : JUN 3 - JUN 9 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 90 51 30 108 ---- Normal 90 53 32 112 Recorded 90 47 19 102 0.00 2011 93 50 22 112 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): .43" .43" .43" .43" WEATHER UPDATE -------------------------------- --High pressure will remain in place, resulting in clear, dry & seasonably hot weather this week. Expect hot days & mild nights with light to moderate winds. --First fruiting branches (pinhead square,PHS) typically form at nodes 5-7 at ~700 HUs after planting (HUAP). First flowers will develop from these early PHS at ~1200 HU with peak bloom (PB) following at ~2000 HUAP. N fertlizer should be applied between PHS & PB. Details @ www.cals.arizona.edu/pubs/crops/az1200.pdf. --The hot & dry June weather is optimal for cotton development in AZ. Growers should monitor crop water status & avoid stresses (e.g., water, pests) that can result in square loss. Poor early season fruit set lengthens the primary bloom period, making the crop more vulnerable to heat stress during the monsoon. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUN 10, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | v | | | | | | | 4/1 ***************** 832 +4 days | v | | | | | | | | 4/15*************** 739 +4 days | v | | | | | | | | 5/1 *********** 564 +2 days | v | | | | | | | | 5/15******** 411 +3 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 9 v = Heat Units on JUN 2; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1077; Last year = 1044; Normal = 1049 HUs since Jan 1 are running about 3 days ahead of normal. HU last week = 114 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 3 - JUN 9 This Week : JUN 10 - JUN 16 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 90 53 32 112 ---- Normal 93 55 33 126 Recorded 93 51 25 114 0.00 2011 95 52 23 121 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): .65" .5" .49" .49" WEATHER UPDATE -------------------------------- --Sunny & dry weather will continue this week with temperatures running slightly above normal through Wednesday. Some cooling is expected later in the week as a trough of low pressure develops over the western state. --Hot & dry June weather is optimal for cotton development. Growers should avoid stresses that can result in square loss. Poor early season fruit set lengthens primary bloom, making the crop more vulnerable to heat stress during the monsoon. --N fertlizer should be applied between pinhead square & peak bloom (700-1200 HUs after planting. For more details go to www.cals.arizona.edu/pubs/crops/az1200.pdf. --The Climate Prediction Center has issued an El Nino watch. El Nino conditions may develop by late summer. El Nino is associated with wet winters in AZ. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUN 17, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | v| | | | | | | 4/1 ******************* 955 +3 days | |v | | | | | | | 4/15***************** 862 +3 days | v | | | | | | | | 5/1 ************** 687 +2 days | v | | | | | | | | 5/15*********** 534 +2 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 16 v = Heat Units on JUN 9; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1200; Last year = 1165; Normal = 1175 HUs since Jan 1 are running about 2 days ahead of normal. HU last week = 123 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 10 - JUN 16 This Week : JUN 17 - JUN 23 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 93 55 33 126 ---- Normal 96 58 37 134 Recorded 94 54 31 123 0.08 2011 97 57 31 138 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): .77" .64" .45" .45" WEATHER UPDATE -------------------------------- --Humidity surged into eastern & south central AZ Saturday, producing afternoon clouds & thunderstorms. This moisture was replaced by hot & very dry conditions Sunday which are expected to continue statewide through late this week. Moisture is again expected to leak into eastern & south central AZ this weekend as high pressure shifts east & low pressure develops off the west coast. Temperatures should average about 5 degrees above normal for the week. --Hot & dry June weather is optimal for cotton development. Avoid stresses that can result in square loss & poor early season fruit set which lengthens primary bloom & makes the crop more vulnerable to heat stress during monsoon. The monsoon appears to be developing early this year! COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUN 24, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | |v | | | | | | 4/1 ********************** 1096 +3 days | | v| | | | | | | 4/15******************** 1003 +4 days | v | | | | | | | 5/1 ***************** 828 +2 days | v | | | | | | | | 5/15************** 675 +3 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 23 v = Heat Units on JUN 16; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1341; Last year = 1303; Normal = 1309 HUs since Jan 1 are running about 3 days ahead of normal. HU last week = 139 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 17 - JUN 23 This Week : JUN 24 - JUN 30 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 96 58 37 134 ---- Normal 97 62 41 146 Recorded 99 57 33 139 0.00 2011 100 66 40 167 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.06" .91" .64" .49" HEAT STRESS LEVELS -------------------------------- Date 6/17 6/18 6/19 6/20 6/21 6/22 6/23 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --The humid weather that entered central & eastern AZ this past weekend will generate scattered afternoon & evening thunderstorms through Tuesday. Western production areas should remain dry. High pressure will redevelop over AZ Wed- nesday, bringing a return to very hot & dry weather statewide. Hot & dry con- ditions are expected to continue through the coming weekend. --The Climate Prediction Center (CPC) has issued an El Nino Watch. CPC expects El Nino (EN) conditions to redevelop late this summer. Often when EN develops in late summer, above normal precipitation results during the subsequent winter. --Heat stress (HS) values are provided above. No serious HS was recorded last week. See http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS for more details. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUL 1, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | v | | | | | | 4/1 ************************* 1262 +4 days | | | v | | | | | | 4/15*********************** 1169 +4 days | | v| | | | | | | 5/1 ******************** 994 +3 days | v | | | | | | | 5/15***************** 841 +3 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUN 30 v = Heat Units on JUN 23; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1507; Last year = 1470; Normal = 1455 HUs since Jan 1 are running about 3 days ahead of normal. HU last week = 166 HISTORICAL STATISTICS -------------------------------- Last Week : JUN 24 - JUN 30 This Week : JUL 1 - JUL 7 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 97 62 41 146 ---- Normal 95 63 39 146 Recorded 98 66 48 166 0.00 2011 97 64 54 163 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.28" 1.14" .87" .63" HEAT STRESS LEVELS -------------------------------- Date 6/24 6/25 6/26 6/27 6/28 6/29 6/30 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --Moisture will enter AZ this week as a tropical easterly wave moves across N. Mexico. Moisture will enter southeast & south central AZ Monday & the remaining areas Tuesday. Expect more cloudiness & slightly cooler temperatures with this moisture. Precipitation, some heavy, is expected in southeast & south central AZ. Only isolated thunderstorms are forecast for central/western AZ. Humidity will remain in place in southeast & south central AZ throughout the week with drier air forecast to return to western AZ by the weekend. --Some L1 heat stress (HS) was reported last week (see above). HS results when high temperatures combine with elevated humidity to increase crop temperatures. See http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS for more details. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUL 8, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | |v | | | | | 4/1 **************************** 1405 +4 days | | | v| | | | | | 4/15************************** 1312 +4 days | | | v | | | | | | 5/1 *********************** 1137 +3 days | | v| | | | | | | 5/15******************** 984 +3 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 7 v = Heat Units on JUN 30; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1650; Last year = 1633; Normal = 1602 HUs since Jan 1 are running about 3 days ahead of normal. HU last week = 142 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 1 - JUL 7 This Week : JUL 8 - JUL 14 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 95 63 39 146 ---- Normal 94 64 51 146 Recorded 90 63 53 142 1.35 2011 93 63 48 147 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.25" 1.13" .91" .71" HEAT STRESS LEVELS -------------------------------- Date 7/1 7/2 7/3 7/4 7/5 7/6 7/7 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --Hot & relatively dry air will remain in place through mid-week. Temperatures in excess of 110F are expected in central & western production areas. A cooler, easterly flow regime will pull in more moisture by mid-week. Expect cooler temp- eratures, higher humidity and improved chances for afternoon & evening thunder- storms in all production areas during the latter half of the week. --Heat stress (HS) results when high temperatures combine with elevated humidity to increase crop temperatures. The cool temperatures that arrived with last week's surge of monsoon moisture prevented the development of serious HS. This week's forecast for high temperatures & increased humidity may produce the first serious HS for 2012. Details at http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUL 15, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | v | | | | | 4/1 ******************************* 1571 +5 days | | | | v | | | | | 4/15****************************** 1478 +5 days | | | v| | | | | | 5/1 ************************** 1303 +4 days | | | v | | | | | | 5/15*********************** 1150 +4 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 14 v = Heat Units on JUL 7; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1816; Last year = 1780; Normal = 1748 HUs since Jan 1 are running about 4 days ahead of normal. HU last week = 166 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 8 - JUL 14 This Week : JUL 15 - JUL 21 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 94 64 51 146 ---- Normal 93 64 55 146 Recorded 92 68 57 166 0.02 2011 93 66 55 162 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.46" 1.34" 1.12" .92" HEAT STRESS LEVELS -------------------------------- Date 7/8 7/9 7/10 7/11 7/12 7/13 7/14 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --A drier southwesterly flow will develop this week, resulting in lower humidity & higher temperatures by mid-week. The mid-week warming will bring temperatures back near normal for mid-July. The best chances for precipitation will be early in the week in southeast AZ. Another tropical system is expected to impact the state by the weekend, bringing a return to higher humidity & increased chances for precipitation. --Heat stress (HS) continues to run well below normal for mid-July & this week's forecast calling for drier conditions should produce minimal HS this week. For more information on HS go to http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUL 22, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | v | | | | 4/1 ********************************** 1712 +5 days | | | | v| | | | | 4/15******************************** 1619 +5 days | | | | v | | | | | 5/1 ***************************** 1444 +3 days | | | v| | | | | | 5/15************************** 1291 +4 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 21 v = Heat Units on JUL 14; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 1957; Last year = 1942; Normal = 1895 HUs since Jan 1 are running about 4 days ahead of normal. HU last week = 141 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 15 - JUL 21 This Week : JUL 22 - JUL 28 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 93 64 55 146 ---- Normal 91 64 56 142 Recorded 89 63 58 141 1.57 2011 90 64 61 152 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.45" 1.34" 1.14" .97" HEAT STRESS LEVELS -------------------------------- Date 7/15 7/16 7/17 7/18 7/19 7/20 7/21 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --Warm & humid weather will remain in place through Tuesday, bringing a chance for afternoon/evening thunderstorms. Drier air will enter AZ mid-week, leading to hotter temperatures & reduced chances for precipitation. Moisture will re- turn by the weekend, resulting in cooler temperatures & increased chances for precipitation. Temperatures should average slightly above normal this week. --August Climate Prediction Center forecast shows a bias for above normal pre- cipitation statewide. No bias is indicated for August temperatures. All 90-day forecasts through next spring show a bias for above normal precipitation due to the forecasted development of El Nino late this summer. Above normal winter precipitation often results when El Nino is in place by late summer. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY JUL 29, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | v | | | | 4/1 ************************************* 1853 +5 days | | | | |v | | | | 4/15*********************************** 1760 +5 days | | | | v | | | | | 5/1 ******************************** 1585 +3 days | | | | v | | | | | 5/15***************************** 1432 +4 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to JUL 28 v = Heat Units on JUL 21; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2098; Last year = 2094; Normal = 2037 HUs since Jan 1 are running about 4 days ahead of normal. HU last week = 140 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 22 - JUL 28 This Week : JUL 29 - AUG 4 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 91 64 56 142 ---- Normal 91 64 58 143 Recorded 87 63 60 140 1.33 2011 93 66 61 159 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.48" 1.39" 1.2" 1.05" HEAT STRESS LEVELS -------------------------------- Date 7/22 7/23 7/24 7/25 7/26 7/27 7/28 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --The tropical system that produced heavy weekend rains in southeast & central AZ has moved into western AZ where it will slowly dissipate this week. This system is expected to produce isolated heavy thunderstorms over western pro- duction areas through mid-week. Drier air will enter eastern AZ early in the week then spread into western AZ mid-week. This drier air will greatly reduce the chances for precipitation and allow temperatures to return to normal levels. --Heat stress (HS) continues to run well below normal for this time of year. HS reports are available at: http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS --Long term forecasts are calling for El Nino to develop late this summer. Above normal winter precipitation often results when El Ninos develop in late summer. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY AUG 5, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | v | | | | 4/1 **************************************** 1995 +5 days | | | | | v | | | | 4/15************************************** 1902 +5 days | | | | |v | | | | 5/1 *********************************** 1727 +3 days | | | | v | | | | | 5/15******************************* 1574 +4 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to AUG 4 v = Heat Units on JUL 28; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2240; Last year = 2253; Normal = 2180 HUs since Jan 1 are running about 4 days ahead of normal. HU last week = 142 HISTORICAL STATISTICS -------------------------------- Last Week : JUL 29 - AUG 4 This Week : AUG 5 - AUG 11 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 91 64 58 143 ---- Normal 91 64 57 142 Recorded 89 62 60 142 0.61 2011 90 66 62 154 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.69" 1.59" 1.4" 1.23" HEAT STRESS LEVELS -------------------------------- Date 7/29 7/30 7/31 8/1 8/2 8/3 8/4 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --High pressure is expected to develop over AZ early this week resulting in less humidity & much hotter temperatures. After Monday, precipitation will limited to high elevation areas, mostly in eastern AZ. Temperatures are expected to run 7-9 degrees above normal this week & may generate the first widespread problems with heat stress, even if humidity levels low some. Heat stress reports are available at: http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS --The Climate Prediction Center is expecting El Nino conditions to develop late this summer. All precipitation forecasts for the coming winter now show a bias for above normal precipitation. A new update on El Nino will be issued this week & will be summarized in next week's advisory. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY AUG 12, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | v| | | | 4/1 ******************************************* 2153 +6 days | | | | | v | | | | 4/15***************************************** 2060 +6 days | | | | | v | | | | 5/1 ************************************** 1885 +4 days | | | | v | | | | 5/15*********************************** 1732 +5 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to AUG 11 v = Heat Units on AUG 4; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2398; Last year = 2407; Normal = 2321 HUs since Jan 1 are running about 5 days ahead of normal. HU last week = 158 HISTORICAL STATISTICS -------------------------------- Last Week : AUG 5 - AUG 11 This Week : AUG 12 - AUG 18 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 91 64 57 142 ---- Normal 90 62 56 136 Recorded 97 64 52 158 0.03 2011 90 64 63 152 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 2.12" 2.12" 1.91" 1.71" HEAT STRESS LEVELS -------------------------------- Date 8/5 8/6 8/7 8/8 8/9 8/10 8/11 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --High pressure will remain in place through mid-week, resulting in near record temperatures and widely scattered thunderstorms through Wednesday. A more south- erly flow regime will develop during the last half of the week, producing more humid conditions & a return to normal temperatures for mid-August. Afternoon & evening thunderstorms will be more prevalent with the increased moisture levels. --Last week's heat produced the first extended period of Level 2 (L2) heat stress in central & western AZ. Heat stress impacts squares & flowers, resulting in the abortion of young bolls (~3 days post bloom). Extended periods of L2 stress can produce prolonged periods of low fruit retention. For more details see reports & publications at http://ag.arizona.edu/azmet/cotton.htm#HEATSTRESS COCHISE COUNTY COTTON DEVELOPMENT ADVISORY AUG 19, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | | v | | | 4/1 ********************************************** 2303 +6 days | | | | | v | | | 4/15******************************************** 2210 +6 days | | | | | v | | | | 5/1 ***************************************** 2035 +4 days | | | | | v | | | | 5/15************************************** 1882 +5 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to AUG 18 v = Heat Units on AUG 11; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2548; Last year = 2559; Normal = 2457 HUs since Jan 1 are running about 5 days ahead of normal. HU last week = 149 HISTORICAL STATISTICS -------------------------------- Last Week : AUG 12 - AUG 18 This Week : AUG 19 - AUG 25 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 90 62 56 136 ---- Normal 91 62 55 135 Recorded 92 64 56 149 0.32 2011 97 64 59 160 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.81" 1.81" 1.81" 1.63" HEAT STRESS LEVELS -------------------------------- Date 8/12 8/13 8/14 8/15 8/16 8/17 8/18 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --High pressure Monday will result in mostly dry conditions with near normal temperatures. The favored location for precipitation on Monday will be in south- east AZ. Low pressure will move into AZ on Tuesday, producing cooler temperatures & increased chances for precipitation through Wednesday. Dry,westerly flow will develop Thursday, resulting in lower humidity, warmer temperatures & reduced chances for precipitation through the weekend. --El Nino is expected to be in place by September. At present, forecast models do not expect a strong El Nino, but rather one that peaks in the moderate range. Still, all long range forecasts through next March exhibit above normal bias for precipitation. COCHISE COUNTY COTTON DEVELOPMENT ADVISORY AUG 26, 2012 PLANTING +/- normal DATE+-------------------------------------------------------------------------+ | | | | | | | | | | | | | | | v | | | 4/1 ************************************************* 2438 +6 days | | | | | | v | | | 4/15*********************************************** 2345 +6 days | | | | | v | | | 5/1 ******************************************* 2170 +4 days | | | | | v | | | | 5/15**************************************** 2017 +5 days | | | | | | | | | | Pin Sus 1st 1" Pk. Bloom Cut-Out Terminate | | head Sq. Flowr Boll +---+---+ +---+---+ +---+---+ | | S M F S M F S M F | +-------+-------+-------+-------+-------+-------+-------+-------+-------+-+ 0 400 800 1200 1600 2000 2400 2800 3200 3600 HEAT UNITS ACCUMULATED FROM PLANTING to AUG 25 v = Heat Units on AUG 18; S,M,F = Short, Medium, and Full Season Varieties HEAT UNITS -------------------------------- Heat Unit (HU) accumulation since Jan 1 = 2683; Last year = 2719; Normal = 2592 HUs since Jan 1 are running about 4 days ahead of normal. HU last week = 135 HISTORICAL STATISTICS -------------------------------- Last Week : AUG 19 - AUG 25 This Week : AUG 26 - SEP 1 HIGH LOW DEWPT HUs RAIN HIGH LOW DEWPT HUs Normal 91 62 55 135 ---- Normal 90 61 54 132 Recorded 87 62 61 135 0.50 2011 99 64 53 160 ESTIMATED WATER USE -------------------------------- Planting date : 4/1 4/15 5/1 5/15 Water Use (last week): 1.48" 1.48" 1.48" 1.46" HEAT STRESS LEVELS -------------------------------- Date 8/19 8/20 8/21 8/22 8/23 8/24 8/25 Stress ns ns ns ns ns ns ns Key : ns = no stress; L1 = Level 1 Stress; L2 = Level 2 Stress WEATHER UPDATE -------------------------------- --High pressure over southwest Colorado will bring easterly flow to AZ this week. Expect hot temperatures, moderate humidity & a chance for afternoon & evening thunderstorms both early & late in the week. Drier air will enter AZ mid-week & lower the chances for precipitation except near Yuma where a weak distubance may trigger thunderstorms. A second disturbance is forecast to impact AZ late in the week & may produce more widespread precipitation in central & eastern AZ. This is the final cotton advisory for the 2012 season. Have a safe & profitable harvest season!!