Contents

• Review of the 1999 Cotton Season

CROP MANAGEMENT

• Planting Date Effects on Soil Temprature, Crop Growth, and Yield of Upland Cotton, 1999
• Date of Planting by Long Staple and Short Staple Variety Trial, Safford Agricultural Center, 1999
• Cotton Defoliation Evaluations, 1999
• Development of a Yield Projection Technique for Arizona Cotton
• 1999 Integrated Cotton Management Demonstration
• The 2000 Arizona Cotton Advisory Program
• How to Obtain Cotton Advisories From The Internet

PHYSIOLOGY AND GROWTH REGULATORS

• Evaluation of a Feedback Approach to Nitrogen and Pix Applications, 1998 and 1999
• Mepiquat Chloride Effects on Irrigated Cotton in Arizona

UPLAND VARIETY TESTING

• Arizona Upland Cotton Variety Testing Program, 1999
• Upland Cotton Regional Variety Trial
• Short Staple Variety Trials, Graham County, 1999
• Short Staple Variety Trial in Cochise County, 1999
• 1999 Low Desert Upland Cotton Advanced Strains Testing Program
• Comparison of Obsolete and Modern Cotton Cultivars for Irrigated Production in Arizona
• Agronomic Evaluation of Transgenic Cotton Varieties
• Performance of Bollgard II Upland Cotton Strains in Arizona

PIMA COTTON GENETICS AND VARIETY TESTING

• Pima Cotton Regional Variety Trial, Safford Agricultural Center, 1999

IRRIGATION

• Effects of High Frequency Irrigation on Irrigation Uniformity II

SOIL FERTILITY AND SOIL MANAGEMENT

• Nitrogen Management Experiments For Upland and Pima Cotton, 1999
• Fertility Management and Calibration Evaluations on Upland and Pima Cotton
• Soil Test Calibration Evaluations for Phosphorus on Upland and Pima Cotton
• Evaluation of a Calcium - Based Soil Conditioner in Irrigated Cotton
• Cotton Fertility Study, Safford Agricultural Center, 1999
• Influence of Ironite and Phosphorus on Long and Short Cotton on the Safford Agricultural Center, 1999
• Evaluation of An Acid Soil Conditioner in An Irrigated Cotton Production System

INSECT INVESTIGATIONS

• Pesticide Use in Arizona Cotton: Long-term Trends and 1999 Data
• Lygus Control Decision Aids for Arizona Cotton
• Pink Bollworm Egg Infestations and Larval Survival in NuCOTN 33b and Deltapine Cottons in Arizona
• Effects of Aqueous Sprays of Silverleaf Whitefly Honeydew Sugars on Cotton Lint Stickiness
• Silverleaf Whitefly - Trichome Density Relationships on Selected Upland Cotton Cultivars
• Susceptibility of Arizona Whiteflies to Chloronicotinyl Insecticides and IGRs: New Developments in the 1999 Season
• Use of Insect Growth Regulators and Changing Whitefly Control Costs in Arizona Cotton
• Reduced Whitefly Infestations in Cotton Using a Melon Trap Crop

WEED CONTROL

• Effect of Halosulfuron (Permit), CGA362622, Glyphosate (Roundup Ultra) and Pyrithiobac (Staple) on Purple Nutsedge Growing in a Fallow Field
• Johnsongrass Control in Cotton with BAS 620

ULTRA NARROW ROW

• Evaluation of Commercial Ultra Narrow Cotton Production in Arizona
• Agronomic and Economic Evaluation of Ultra Narrow Row Cotton Production in Arizona 1999
• Preliminary Investigations in Ultra-narrow Row Cotton, Safford Agricultural Center, 1999
• Weed Control in Arizona Ultra Narrow Row Cotton: 1999 Preliminary Results

ECONOMICS

• Economic Impacts of Bt Cotton Adoption: A National and Regional Assessment
• The New U.S. - China Trade Agreement and Arizona Cotton