The University of Arizona. The University of Arizona
Agricultural & Resource Economics

For more information on this area, please contact:

Russ Tronstad
Professor and Extension Specialist
(520) 621-6258

Arizona Ranchers’ Management Guide
revised 2002 edition

This expanded guide is designed to be an information resource for Arizona ranchers. The guide contains extension-developed information on a wide range of issues related to Arizona ranch management, including information on production, policy, and economic issues.

You can access the guide online by following the links below. Please note that these pdf files require Acrobat Reader, which can be downloaded free from the Adobe website.

If you would like to purchase the entire Guide in hard copy, please go to and use the online ordering system.

Alternatively, you may contact the following:
4101 N. Campbell Avenue
Tucson, AZ 85719 Phone: 520-318-7275
Fax: 520-795-8508
Toll Free Phone: 1-877-763-5315

Table of Contents


1. Table of Contents, Introduction, Arizona IRM, and Other Information Sources

Section 1: Rangeland Management
Section 1 as a single pdf file

Section 1 Individual Files
1. What is an A.U.M.?
2. Poisonous Plants on Rangelands
3. Grazing Cell Management
4. Range Management Terms/Definitions
5. Monitoring Rangeland Browse Vegetation
6. Intensively Managed Rotational Grazing Systems for Irrigated Pasture
7. Using Salt for Livestock
8. Strategies for Managing Grazing Allotments on Public Lands
9. Using Repeat Color Photography as a Tool to Monitor Rangelands
10. Rangeland Management Information on the Web
11. RUSLE Applications on Arizona Rangelands
12. A Summary of Livestock Grazing Systems Used on Rangelands in the Western United States and Canada

Section 2: Genetics and Reproduction
Section 2 as a single pdf file

Section 2 Individual Files
1. Specialized Lines for Beef Breeding Herds
2. Bull Selection
3. Range Beef Herd Growth Selection
4. Estrus Synchronization and Artificial Insemination for Breeding Beef Cattle
5. Crossbreeding Systems for Arizona Rangelands
6. Understanding EPDs

Section 3: Production and Management Decisions
Section 3 as a single pdf file

Section 3 Individual Files
1. Breeding Yearling Heifers
2. Supplementation or Early Weaning for Range Beef Cattle
3. Feedlot vs. Range Performance

Section 4: Animal Care and Health Maintenance
Section 4 as a single pdf file

Section 4 Individual Files
1. Injuries and Diseases of Beef Cattle Associated with Calving
2. Diseases of Beef Cattle Associated with Post-Calving and Breeding
3. Blackleg and Malignant Edema Control
4. Neonatal Calf Diarrhea
5. Castrating Calves and Lambs
6. Abortion Disease of Range Cattle
7. Foothill Abortion: A Western States Problem
8. Hand Feeding Young Calves
9. Trichomoniasis
10. Pine Needle Abortion

Section 5: Range Cattle Nutrition
Section 5 as a single pdf file

Section 5 Individual Files
1. Nutritional Value of Range Forage for Livestock
2. Range Cow Nutrition Management Evaluator
3. Range Cow Nutrition in Late Pregnancy
4. Least Cost Supplementation
5. How Do Domestic Ungulates Select Nutritious Diets on Rangelands?
6. Matching Forage Resources with Cow Herd Supplementation
7. Protein Supplementation
8. Supplementation During Drought
9. Managing Nutritional Challenges to Reproduction
10. Heifer Development on Rangelands

Section 6: Ranch Business Management
Section 6 as a single pdf file

Section 6 Individual Files
1. Range Cow Culling: Herd Performance
2. Market Impacts on Culling Decisions
3. Optimal Economic Range Cow Culling Decisions: Biological and Market Factors Combined
4. The Influence of Lot Size on Feeder Cattle Prices at Arizona Auctions
5. The Economics of Shrinkage
6. Potential Profits from Wildlife
7. Least Cost Feed Rations on Your Personal Computer
8. Comparison of Livestock Marketing Alternatives
9. Hedging Potential in California Cattle Markets
10. Livestock Hedging Using Futures or Options
11. Using Options to Control Livestock Feed Costs
12. Beef Cow Share Lease Arrangements
13. Value of Pregnancy Testing
14. Is a Bed and Breakfast Ranching?
15. Overview of Ranch Financial Analysis Spreadsheet
16. Actual and Projected Cash Flows
17. Modified Cash Projections
18. Evaluating Management Decisions
19. Drought Assistance Programs and Tax Implications of Drought-Induced Livestock Sales
20. Trade-Off Between Cow Numbers, Calf Size, and Sale Date Incorporating Seasonal Factors and Supplemental Feeding

Section 7: Policy Issues
Section 7 as a single pdf file

Section 7 Individual Files
1. Dealing with Media
2. Sustainable Ranching
3. Coordinated Resource Management
4. Public Grazing in the West: The Impact of “Rangeland Reform ’94”