Poa trivialis germplasm was planted as an overseed and maintained under a sand-based putting green. Experimental synthetic lines and commercial cultivars were evaluated for establishment, turfgrass cover, quality and spring transition.

Seed entries ranged from 15% to 58% plot cover at three weeks after planting. By seven weeks after planting, plot cover ranged from 68% to 92%.

Entries were significant for having different turfgrass color, quality, density, texture and uniformity. 'Colt plus' had a fast establishment rate, while PT I 93-94 was the slowest to establish. The PT series in general had a darker green color than most other entries. For overall turfgrass quality, the experimental synthetics generally had better performance than existing commercially available cultivars. On average the synthetics had higher visual estimates for shoot density and finer leaf textures. Commercial cultivars were surprisingly less uniform in plot appearance as well. There were large differences for transition to bermudagrass. Mean values for percent bermuda ranged from 10% to 52% by mid June of 1995.
 
 

Poa trivialis (roughstalk bluegrass) is being used more frequently as an overseed on bermudagrass tees, greens, and in some cases, fairways. The ability of roughstalk bluegrass (RB) to produce stolons for increased density is an attribute for providing a smooth and uniform turf surface. A test was conducted at the University of Arizona to assess the greens performance of experimental germplasm and select commercially available cultivars of Poa trivialis for performance under greens conditions.

Plots of roughstalk bluegrass (RB) were seeded at the rate of 3.0 lb./1000 ft² on October 19, 1994 over a four year old Tifgreen bermudagrass green at the Karsten Turfgrass Research Facility in Tucson, Arizona. The green was lightly verticut in three directions before seeding and was topdressed with 1/4" of sand immediately after overseeding. Plot size was 3' by 4' and all treatments were replicated three times in a RCBD field design.

The turf was initially mowed at a height of 6mm for five days, and then lowered to 7mm on November 8, 1994. The turf was then lowered in three 10 day increments to 6, 5 and 4mm. Mowing frequency ranged from 3x a week during the cold months of December and early January, to 6x a week from late January to June 1995. No topdressing was practiced.

Germplasm included the following fifteen (RB) entries, plus an unseeded dormant bermudagrass check. LRF-CT, LRF-HWY, Danish Common, PT J93-94, PT A93-94, PT B93-94 PT I93-94, PT GH92, Laser, Winterplay, Colt, Sabre, Pro-Am, Dark Horse, Colt Plus, and the unseeded Tifgreen bermudagrass.

A corrected estimate of 3.5 lbs. of N-P-K/M were applied from eight applications from November 1994 to May 1995. Errors in calibration resulted in serious under application until January of 1995. Before January 1995, probably only 0.5 lbs./M of N-P-K was actually applied. Data collected included visual estimates of turfgrass cover, color, quality, density, texture and uniformity on select dates.

Establishment

Plots were evaluated on November 11 for percent plot cover (0-100%). Treatment means ranged from 15% to 58%. Colt Plus and PT GH92 had 50% or greater percent ground cover, followed by Winterplay, Danish Common, Colt, and Sabre, which had 40% to 47% cover. Six entries had 25% or less cover, which included the cultivars Laser and Pro-Am. On November 23, 1994, values ranged from 37% to 72%, with most entries assuming the same general rank order as on the November 11 rating (Table 1).

December 20, 1994

Turfgrass color, quality and plot cover were assigned to plots on December 20. Mean color scores were assigned using a 1-9 scale, 9 = best. Mean color scores ranged from 3.0 (Danish Common) to 5.3 for Laser. (RB) as a species generally has a lighter color than perennial ryegrass, which is not a penalty. A potential benefit of the light color is the potential masking of annual bluegrass, although post emergence herbicide control of annual bluegrass is more limited for PT than a more traditional perennial ryegrass overseeding. Laser, PT B93-94, PT GH92 had mean color scores of 5.3. Five entries had mean color scores of 4.0 or less. The bermudagrass check had a mean color score of 2.0 (Table 2).

Turfgrass quality scores ranged from 3.0 to 5.3 among PT plots. PT GH92, Dark Horse, and Laser PT had mean quality scores of 5.0 to 5.3. Four entries had very low quality scores of 3.7 to 3.0 (Table 3).

December 24, 1994

Mean percent plot cover increased overall by December 24, and mean values ranged from 68% to 92%. Nine entries had percent plot cover mean scores of 85% or greater, with Winterplay, PT GH92, Danish Common and Colt Plus having percent plot cover of 90% to 92%. Entries with less then 80% cover would be easily recognizable to the average golfer as having less than full coverage (Table 1).

January 30, 1995

Previous to this date, an error in calculation by the farm manager resulted in a deficiency in fertilizer by 90% from a decimal error in calibration. This explains the poor quality scores in late fall and early winter. Mean color scores ranked from 4.0 (Danish Common) to 7.7 for PT J93-94. PT J93-94, PT B93-94 and PT I93-94 had mean color scores of 7.0 or greater, showing darker color. Dark Horse had a lighter color of 5.7, followed closely by Sabre. Danish Common had the lightest numerical color of 4.0. The dormant bermuda was completely straw colored (Table 2).

Turfgrass mean quality scores ranged from 4.0 to 6.0. Winterplay had the highest numerical score of 6.0, followed closely by PT GH92, LRF CT, Dark Horse and Pro-Am (means = 5.3 to 5.7). Danish Common and PT I93-94 had mean quality scores of 4.0. Sabre scored a mean value of 4.3 (Table 3).

February 20, 1995

Mean color scores ranged from 3.3 to 6.7 for PT entries. The PT series J, B, A, and I, had mean color scores of 6.3 to 6.7, followed closely by PT GH92, Winterplay, and LRF-HWY, which had mean color values of 6.0. Colt, Colt Plus and Danish Common had values of 4.0 or less (Table 2).

Mean turfgrass quality score ranged from 4.0 to 6.3 among treated plots. PT A93-94, and PT GH92, had mean quality scores of 6.3. Colt, Colt Plus and Danish Common had scores of 4.7, 4.3, and 4.0, respectively (Table 3).

March 7, 1995

Density scores were assigned using the progressive 1-9 visual scale. The mean performance scores of PT plots ranged from 3.7 to 7.3. PT A93-94 and PT GH92 had a visual mean density score of 7.0. Five entries had density scores of 5.3 to 5.0, while Danish Common had a value of 3.7. The unseeded bermudagrass was still fully dormant (Table 4).

Turfgrass color scores ranged from 3.0 to 7.3. PT J93-94 and PT I93-94 had mean color scores of 7.3, followed by PT B93-94, which provided a mean score of 7.0. Colt, Colt Plus and Danish Common had very light color green turfs, with mean color scores within 3.0 to 4.7 (Table 2).

Quality scores also ranged dramatically from 3.0 to 7.3 among PT treated plots. PT B93-94, PT A93-94, PT GH92, PT J93-94, and LRF-HWY had mean quality scores of 7.0 to 7.3. Colt and Danish Common had mean quality scores of 4.3 or less (Table 3).

Leaf texture scores were assigned for the first time using the 1-9 progressive scale. Texture differences were dramatically evident at this time, as PT entries ranged from 3.7 (Danish Common) to 7.7 for LRF-HWY. Other entries with texture scores of 7.0 to 7.3 included LRF-CT, PT GH92, and PT B93-94 (Table 5). Plots which exhibited a wider leaf texture included Colt, Colt Plus, and Danish Common (mean value range of 3.7 to 4.7)(Table 5).

April 8, 1995

Color, quality, density, texture and uniformity scores were assigned to plots on April 8. Color scores ranged from 3.0 to 7.3 for PT plots. Of the 93-94 series germplasm, PTA, PTJ, PTB, PTI as well as PT GH92 had mean color scores of 6.3 to 7.3, with J and A having 7.0 or greater mean color values. Sabre, Colt, Colt Plus and Danish Common had values of 4.7 or less. The bermudagrass check had a mean color score of 2.0 at this time (Table 2).

Mean quality scores ranged from 3.3 to 7.7. PT A93-94 and LRF-CT had numerical quality mean scores of 7.7 and 7.3, respectively. Five additional entries had scores of 6.0 to 6.7 (PT GH92, PT B93-94, LRF-HWY, PRO-AM, and PT J 93-94). Danish Common scored 3.3.

Density scores ranged from 4.0 to 8.0. PT A93-94 and PRO-AM had density scores of 8.0, followed closely by PT GH92 and LRF-CT (value of 7.7). Laser, Saber, Dark Horse, Colt Plus and Danish common had density values of 5.7 or less. Danish Common was noticeably the weakest PT in this test (Table 4).

Mean uniformity scores were assigned for the first time on April 8, using the 1-9 progressive scale. Uniformity is based on consistency in turf within each plot. Plots with variable/inconsistent color (blotchiness), leaf widths (inconsistent or mixed leaf textures) and grain produce lower uniformity scores. A plot can be very light green throughout the entire plot and will receive a high numerical uniformity score. Consistency of appearance (not scale of appearance) determines uniformity. Uniformity scores ranged from 4.0 to 7.7. PT A 93-94 and PT GH92 both had mean uniformity values of at least 7.3. Entries with mean uniformity scores of 5.3 or less, may be noticeable to the regular golfer as having less than a desirable surface, while plots with values of less than 5.0 would be noticeable to the occasional golfer (Table 6).

May 8, 1995

Texture scores ranged from 4.3 (Danish Common) to 8.0 (PT A93-94). There were six entries which produced mean texture scores within the mean range of 7.7 to 7.0. Colt, Sabre, Dark Horse and Laser had values between 5.0 and 5.3, showing wider leaf textures than some of the experimental materials (Table 5).

Mean color scores ranged from 3.0 to 6.7 for PT turf, while the bermudagrass now had a value 2.3 in color. PT 1 93-94, Dark Horse, PT GH92, PT I93-94, and PT J93-94 had mean color values of 6.3 to 6.7. Colt, Colt Plus and Danish Common had color scores of 4.0 or less (Table 2).

Entries with the darkest color are not necessarily those with the best overall turf appearance. Mean quality scores ranged from 3.7 (Danish Common) to 7.7 (PRO-AM). LRF-CT had a late spring overall quality score of 6.7, followed by PT A93-94, PT GH92, and LRF-HWY, which produced mean quality values with in the range of 6.0 to 6.3. Laser, Colt Plus, Dark Horse and Danish Common were entries with mean quality scores of 4.3 or less (Table 3).

Density mean scores ranged from 4.0 to 7.7. LRF-DT and PRO-AM had the largest numerical score (7.7), followed closely by LRF-HWY (7.0). PT J93-94, Dark Horse and Danish Common had mean density scores of 4.0 or less (Table 4).

Leaf texture scores ranged from 4.0 (Danish Common) to 8.0 (LRF-CT). PRO-AM, followed next (7.7), along with LRF-HWY and PT A93-94 (7.3 and 7.0, respectively). The coarse underlying Tifgreen scored a mean value of 2.0, as the first leaves on the most upright stolons produced quite large leaves, compared to PT (Table 5).

Uniformity scores were somewhat lower, most likely due to heat stress, bright sunny days, and increased soil temperatures. PT A93-94 had the largest numerical score for uniformity at 6.7, followed by LRF-CT, LRF-HWY and PRO-AM, each with identical mean uniformity scores of 6.0 (Table 6).

Six entries had mean uniformity scores of 4.7 or less, which included the bulk of the commercially available cultivars included in this test. This demonstrated the improved performance of Poa trivialis by turfgrass breeders, especially in the areas of color, quality, and apparent persistence in warmer conditions than otherwise expected for PT in general.

June 6, 1995

Turfgrass color, quality, density, texture and uniformity were measured.

Color scores were slightly diminished (as expected) due to summer conditions. Mean color scores ranged from 4.3 to 6.0. The bermudagrass was now actively growing and had a light color of 5.0. Colt Plus and Danish Common were naturally lighter than the other plots. PT J93-94, PT B93-94, LRF-HWY, PRO-AM and LRF-CT had mean color scores of 6.0 (Table 2).

Turfgrass quality scores decreased as well (as expected). PRO-AM had the highest numerical quality score of 6.0, followed by PT A93-94 and LRF-CT (5.7). Nine PT entries had quality scores of 4.7 or less with four of these having scores of 3.7 or less (Table 3).

Mean density scores of 3.7 to 8.7 were recorded, as PT plots still had lots of PT in their overseeded condition, although color and quality had decreased. The cool spring of 1995 enhanced this effect, and it is noted that no cultural management practices were employed on these plots to enhance transition. PRO-AM and PT A93-94 had maintained high density scores of 8.7 and 8.0, respectively. The entries LRF-CT, PT GH92 and LRF-HWY also had high density mean values within the range of 7.0 to 7.7. Consistently, Danish Common was the least dense (Table 4).

Texture scores were still unexpectedly high for the beginning of June. The mean texture scores ranged from 4.0 to 8.0 among PT plots, with the bermudagrass check having a score of 2.0. LRF CT had a mean texture score of 8.0, followed by PRO-AM (7.7), LRF-HWY (7.3), and PT A93-94 (7.0) (Table 5).

Turfgrass uniformity scores ranged from 3.0 to 6.7. The entries LRF-CT, PT A93-94 and PRO-AM had mean uniformity scores of at least 6.3. Ten other entries had uniformity scores of 4.7 or less, exhibiting an uneven turf surface by the close of this test in early June (Table 6).

June 16, 1995

Percent bermudagrass was evaluated on a plot basis (0-100%). The unseeded control was 98% 'Tifgreen' bermudagrass. Bermudagrass ranged from 10% to 53% among overseeded PT plots. PT J93-94 and Dark Horse were 50% or greater bermudagrass, while seven other entries had 20% or less bermudagrass.

1. 'Colt Plus', PT GH92, Danish Common and Winterplay (RB) established relatively quickly compared to other (RB) entries.

2. PTJ, PTB, PTA, PTI and PT GH92 were generally darker in color than other entries, which included existing cultivars of (RB). Danish Common was consistently very light in color.

3. PT GH92, LRF-CT, PTA, Pro-AM and LRF-HWY had above average turfgrass quality on a season average basis. PRO-AM had very good spring performance, but was slow to establish in the fall.

4. PRO-AM, PTA-93, LRF-CT, PT GH92 and LRF-HWY generally had high visual shoot density from March-June 1995.

5. LRF-CT, PTA, LRF-HWY and PRO-AM maintained and held a fine leaf texture throughout the spring and into the heat stress of June.

6. PT GH92, LRF-CT, PTA, PRO-AM, PTI and Winterplay had the most transition by mid-June, 1995. Others had as much as 53% (RB) left at that time.

FN:PT9495.96 DIR:Q196

Table 1. Mean percent¹ turf cover². Poa trivialis test. University of Arizona 1994-1995.
 

TREATMENT	NOV 11,19943	TREATMENT	NOV 23, 19943	TREATMENT	DEC 24, 19943
COLT PLUS	58	COLT PLUS	71	COLT PLUS	92
PT GH 92	50	PT GH 92	68	DAN COM 3M	91
WINTER PLAY	46	DAN COM 3M	65	PT GH 92	90
DAN COM 3M	45	WINTER PLAY	61	WINTER PLAY	90
COLT	41	COLT	58	COLT	88
SABRE	40	SABRE	56	PRO-AM	88
DARK HORSE	31	DARK HORSE	53	LASER	85
LRF-CT	28	PRO-AM	51	SABRE	85
PT A 93-94	26	PT J 93-94	50	DARK HORSE	85
LASER	25	LASER	46	LRF-HWY	83
LRF-HWY	25	LRF-CT	46	LRF-CT	83
PT B 93-94	23	PT A 93-94	43	PT J 93-94	80
PRO-AM	20	LRF-HWY	41	PT B 93-94	78
PT I 93-94	18	PT B 93-94	38	PT A 93-94	75
PT J 93-94	15	PT I 93-94	36	PT I 93-94	68
UNSEEDED	0	UNSEEDED	0	UNSEEDED	6
TEST MEAN4	31	TEST MEAN	49	TEST MEAN	79
LSD VALUE5	19	LSD VALUE	11	LSD VALUE	11

¹Percent turfgrass cover (0-100%).

²Means are values of three replications.

³November 11 and November 23. Estimates based on both Poa trivialis and any live bermuda within plots. December 24 estimates are of Poa trivialis only.

⁴Test mean = mean of all treatments on each date.

⁵LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).

Table 2. Mean color¹ scores² - Poa trivialis test. University of Arizona 1994-1995.
 

TREATMENT	DEC	JAN	FEB	MAR	APRIL	MAY	JUNE	MEAN OVERALL
PT J 93-94	5.0	7.7	6.7	7.3	7.3	6.3	6.0	6.6
PT B 93-94	5.3	7.0	6.7	7.0	6.3	5.7	6.0	6.3
PT A 93-94	5.0	6.7	6.3	6.7	7.0	6.7	5.7	6.3
PT I 93-94	4.0	7.0	6.3	7.3	6.3	6.3	5.3	6.1
PT GH 92	5.3	6.7	6.0	6.3	6.3	6.3	5.7	6.1
LRF-HWY	5.0	6.3	6.0	6.0	6.0	5.7	6.0	5.9
DARK HORSE	4.7	5.7	5.7	6.0	5.3	6.7	5.3	5.6
LRF-CT	4.3	6.7	5.3	5.7	6.0	5.3	6.0	5.6
LASER	5.3	6.7	5.7	5.7	5.7	5.7	4.7	5.6
PRO-AM	4.3	6.0	5.7	5.7	5.7	5.7	6.0	5.6
WINTER PLAY	5.0	6.7	6.0	6.0	5.3	5.3	4.7	5.6
SABRE	4.0	5.0	5.0	5.0	4.7	5.0	4.7	4.8
COLT	4.0	4.7	4.3	4.3	4.7	4.0	5.0	4.4
COLT PLUS	4.0	4.3	4.0	4.7	4.3	4.0	4.3	4.2
DAN COM 3M	3.0	4.0	3.3	3.0	3.0	3.0	3.0	3.2
UNSEEDED	2.0	1.0	2.0	1.0	2.0	2.3	5.0	2.2
TEST MEAN3	4.4	5.7	5.3	5.8	5.4	5.3	5.2	5.3
LSD VALUE4	1.2	1.0	0.9	1.1	1.2	1.4	1.4	0.8

¹Color (1-9), 1 = straw, 9 = dark green.

²Means are values of three replications.

³Test mean = mean of all treatments on each date.

⁴LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).

Table 3. Mean quality¹ scores² - Poa trivialis test. University of Arizona 1994-1995.
 

TREATMENT	DEC	JAN	FEB	MAR	APRIL	MAY	JUNE	MEAN OVERALL
PT GH 92	5.3	5.7	6.3	7.0	6.7	6.3	5.3	6.1
LRF-CT	4.0	5.7	5.3	6.3	7.3	6.7	5.7	5.9
PT A 93-94	3.7	4.3	6.3	7.0	7.7	6.3	5.7	5.9
PRO-AM	3.7	5.3	5.3	6.0	6.3	7.7	6.0	5.8
LRF-HWY	4.0	4.3	5.7	7.0	6.3	6.0	5.0	5.5
PT B 93-94	4.3	5.0	5.0	7.3	6.7	4.7	4.3	5.3
PT J 93-94	4.0	4.7	5.7	7.0	6.0	5.3	3.7	5.2
WINTER PLAY	4.0	6.0	5.7	6.0	5.7	5.0	4.0	5.2
PT I 93-94	3.0	4.0	5.7	6.7	5.7	5.0	4.7	5.0
LASER	5.0	5.0	5.3	5.7	4.3	4.3	5.0	5.0
DARK HORSE	5.0	5.3	5.3	5.0	4.7	4.3	4.3	4.9
SABRE	3.7	4.3	5.3	5.0	5.3	5.3	4.3	4.8
COLT	4.0	4.3	4.7	4.3	5.0	5.3	3.7	4.5
COLT PLUS	4.7	4.7	4.3	5.0	4.7	4.3	3.7	4.5
DAN COM 3M	4.0	4.0	4.0	3.0	3.3	3.7	3.0	3.6
UNSEEDED	2.0	1.0	1.3	1.0	2.0	2.0	3.0	1.8
TEST MEAN3	4.0	4.6	5.1	5.6	5.5	5.3	4.5	4.9
LSD VALUE4	1.5	1.6	1.7	1.5	1.7	1.5	1.9	1.1

¹Quality (1-9), 1 = dead, 9 = best possible.

²Means are values of three replications.

³Test mean = mean of all treatments on each date.

⁴LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).

Table 4. Mean density¹ scores² - Poa trivialis test. University of Arizona 1994-1995.
 

TREATMENT	MARCH	APRIL	MAY	JUNE	MEAN DENSITY
PRO-AM	7.0	8.0	7.7	8.7	7.8
PT A 93-94	7.3	8.0	6.7	8.0	7.5
LRF-CT	6.0	7.7	7.7	7.7	7.3
PT GH 92	7.3	7.7	6.3	7.0	7.1
LRF-HWY	7.0	7.0	7.0	7.0	7.0
PT B 93-94	6.3	7.3	6.0	6.7	6.6
PT I 93-94	6.7	7.0	6.3	6.3	6.6
WINTER PLAY	6.0	6.3	5.7	6.0	6.0
SABRE	6.3	5.7	5.7	6.0	5.9
COLT	5.0	6.3	5.3	6.3	5.8
LASER	5.3	5.7	5.3	5.7	5.5
PT J 93-94	5.3	6.0	4.7	5.3	5.3
DARK HORSE	5.0	5.7	4.7	5.7	5.3
COLT PLUS	5.0	5.3	5.3	5.0	5.2
DAN COM 3M	3.7	4.0	4.0	3.7	3.8
UNSEEDED	1.0	2.0	2.0	3.0	2.0
TEST MEAN3	5.6	6.2	5.6	6.1	5.9
LSD VALUE4	1.4	1.0	1.5	1.4	0.7

¹Density = 1 - 9, 9 = most dense.

²Means are values of three replications.

³Test mean = mean of all treatments on each date.

⁴LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).

Table 5. Mean leaf texture¹ scores² - Poa trivialis test. University of Arizona 1994-1995.
 

TREATMENT	MARCH	APRIL	MAY	JUNE	MEAN OVERALL
LRF-CT	7.0	7.7	8.0	7.7	7.6
PT A 93-94	6.7	8.0	7.0	8.3	7.5
LRF-HWY	7.7	7.0	7.3	7.3	7.3
PRO-AM	6.3	7.0	7.7	7.7	7.2
PT GH 92	7.3	7.7	6.7	6.7	7.1
PT B 93-94	7.3	7.0	6.3	7.0	6.9
PT I 93-94	6.0	7.3	5.3	6.7	6.3
WINTER PLAY	5.7	6.7	6.0	6.0	6.1
SABRE	6.0	5.7	5.3	6.7	5.9
LASER	5.7	5.0	5.7	6.3	5.7
PT J 93-94	6.3	5.7	5.0	5.3	5.6
DARK HORSE	5.7	5.3	5.3	6.0	5.6
COLT PLUS	4.7	6.3	5.0	5.7	5.4
COLT	4.3	5.7	5.3	5.7	5.3
DAN COM 3M	3.7	4.3	4.0	3.7	3.9
UNSEEDED	1.3	2.0	2.0	3.0	2.1
TEST MEAN3	5.7	6.1	5.8	6.2	6.0
LSD VALUE4	1.4	1.1	1.1	1.6	0.8

¹Texture (1-9), 1 = coarse, 9 = finest.

²Means are values of three replications.

³Test mean = mean of all treatments on each date.

⁴LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).

Table 6. Mean uniformity¹ scores² - Poa trivialis test. University of Arizona 1994-1995.
 

TREATMENT	APRIL	MAY	JUNE	MEAN OVERALL
PT A 93-94	7.7	6.7	6.3	6.9
LRF-CT	6.7	6.0	6.7	6.4
PT GH 92	7.3	5.7	5.3	6.1
PRO-AM	6.0	6.0	6.3	6.1
LRF-HWY	6.7	6.0	5.0	5.9
PT B 93-94	6.7	5.0	4.7	5.4
PT I 93-94	6.7	5.3	4.3	5.4
WINTER PLAY	6.3	4.7	4.7	5.2
SABRE	5.0	5.0	4.7	4.9
PT J 93-94	5.3	5.7	3.7	4.9
LASER	5.0	4.7	4.7	4.8
COLT	5.0	4.7	4.7	4.8
DARK HORSE	5.0	4.3	4.3	4.6
COLT PLUS	4.7	4.0	4.3	4.3
DAN COM 3M	4.0	3.3	3.0	3.4
UNSEEDED	2.0	2.0	3.0	2.3
TEST MEAN3	5.6	4.9	4.8	5.1
LSD VALUE4	1.4	1.6	2.1	1.3

¹Uniformity (1-9),1 = poor, 9 = best.

²Means are values of three replications.

³Test mean = mean of all treatments on each date.

⁴LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).

Table 7. Percent¹ bermudagrass at transition (June 17, 1995). Poa trivialis. University of Arizona 1994-1995.
 

TREATMENT	PERCENT2 BERMUDAGRASS
UNSEEDED	98.3
PT J 93-94	52.5
DARK HORSE	50.8
COLT PLUS	39.2
DAN COM 3M	36.7
SABRE	34.2
COLT	30.8
LASER	27.5
LRF-HWY	24.2
PT B 93-94	20.8
WINTER PLAY	17.5
PT I 93-94	15.0
PRO-AM	15.0
PT A 93-94	14.2
LRF-CT	13.3
PT GH 92	10.8
TEST MEAN3	31
LSD VALUE4	17

¹Percent plot bermudagrass (0-100%).

²Means are values of three replications.

³Test mean = mean of all treatments on each date.

⁴LSD value = LSD statistic. Differences between treatment means must be larger than LSD statistic for significant treatment differences to occur (P=0.05).