Contents

• Review of the 1997 Arizona Cotton Season

CROP MANAGEMENT

• The 1998 Cotton Advisory Program
• Date of Planting by Long Staple and Short Staple Variety Trial, Safford Agricultural Center, 1997
• Evaluation of Planting Date Effects on Crop Growth and Yield for Upland and Pima Cotton, 1997
• Evaluation of Irrigation Termination Affects on Upland Cotton, 1997
• Evaluation of 1997 Late-Season Crop Conditions
• Cotton Defoliation Evaluations, 1997
• Defoliation Tests with Ginstar at the Maricopa Agricultural Center in 1997
• Defoliation of Pima and Upland Cotton at the Safford Agricultural Center, 1997

PHYSIOLOGY AND GROWTH REGULATORS

• Fruiting Distribution Patterns among Three Cotton Varieties under Irrigated Conditions
• Do PIX^® Application Guidelines Change for Bt Cotton?
• Development of a Yield Projection Technique for Arizona Cotton

UPLAND VARIETY TESTING

• Arizona Upland Cotton Variety Testing Program, 1997
• Upland Regional Cotton Variety Test at the Maricopa Agricultural Center, 1997
• Marana Upland Test
• Short Staple Regional Cotton Variety Trials, Graham County, 1997
• Short Staple Regional Cotton Variety Trial, Safford Agricultural Center, 1997
• Short Staple Variety Trial, Greenlee County, 1997
• Short Staple Variety Trials in Cochise County, 1997
• Short Staple Cotton Advanced Strains Trial, Safford Agricultural Center, 1997
• 1997 Low Desert Upland Cotton Advanced Strains Testing Program
• Agronomic Evaluations of Transgenic Cotton Varieties
• Agronomic Evaluations of New Transgenic and Non Transgenic Cotton Varieties in La Paz and Mohave Counties

PIMA COTTON GENETICS AND VARIETY TESTING

• Pima Regional Variety Test at the Maricopa Agricultural Center, 1997
• Marana Pima Test, 1997
• Pima Cotton Regional Variety Trial, Safford Agricultural Center, 1997

IRRIGATION

• Upland Cotton Lint Yield Response to Several Soil Moisture Depletion Levels
• Irrigation Efficiencies and Lint Yields of Upland Cotton Growth at the Maricopa Agricultural Center, 1997
• Using Drainage Lysimeters to Evaluate Irrigation and Nitrogen Interactions in Cotton Production
• Field Determination of Permanent Wilting Point

WEED CONTROL

• Survey of Cotton Weeds and Weed Control Practice in Arizona Upland Cotton Fields
• Preliminary Study of Cotton Weed Control Strategies Using Over-The-Top Herbicides
• Layby Mexican Sprangletop Control with Select (Clethodim) and Antagonism Resulting from Staple (Pyrithiobac Sodium) and Select Tank Mixed

INSECT INVESTIGATIONS

• IPM/BMP Practices in Arizona Cotton
• Evaluation of B.T. Cotton Deployment Strategies and Efficacy against Pink Bollworm in Arizona
• Efficacy of Insecticides for Pink Bollworm and Cotton Leaf Perforator Control in Cotton Grown in the Low Desert Region of Arizona, 1997
• Correlation between Early Season Insecticide Control of Pink Bollworm and Other Pests and Subsequent Whitefly Applications near Gila Bend, AZ, 1997
• Effects of Entomopathogentic Nematodes on Pink Bollworm Mortality
• Late Season Pink Bollworm Pressure in the Top Crop of Bt and Non-Bt Cotton
• Whitefly Management in Arizona: Looking at Whole Systems
• Whitefly Management in Arizona: Conservation of Natural Enemies Relative to Insecticide Regime
• Whitefly Management in Arizona: Contribution of Natural Enemies to Whitefly Mortality
• 1997 Season Update on Resistance of Arizona Whiteflies to Synergized Pyrethroid and Select Non-Pyrethroid Insecticides
• Can Resistance to Chloronicotynl Insecticides be Averted in Arizona Field Crops?
• Voluntary Area-Wide Whitefly Monitoring Project Implementation 1995-1997, Gila Bend, AZ
• Silverleaf Whitefly Cotton Cultivator Preference
• Efficacy of Experimental Insecticides for Whitefly Control in Cotton, 1996
• Efficacy of Experimental Insecticides for Whitefly Control in Cotton, 1997
• Seasonal Distribution of Bemesia Honeydew Sugars on Pima and Upland Cotton Lint
• Effects of Cotton Ginning and Lint Cleaning on Sticky Cotton
• Integrated Lygus Management in Arizona
• Lygus Chemical Control: Are Combination Sprays Worth It?
• Efficacy of Experimental Insecticides for Insect Control in Cotton Grown in the Low Desert Region of Arizona, 1997
• New Insights Regarding Estimating Lygus Susceptibility to Insecticides
• Systemic Insecticide Applications at Planting and First Square in Bt Cotton for Early Season Insect Control - La Paz and Mohave Counties
• Side-dress Temik^® Effects on Lint Yields

SOIL FERTILITY AND SOIL MANAGEMENT

• Nitrogen Management Experiments for Upland and Pima Cotton, 1997
• Evaluation of a Feedback Approach to Nitrogen and Pix Applications, 1997
• Comparison of the Two Methods for the Analysis of Petiole Nitrate Nitrogen Concentration in Irrigated Cotton
• Evaluation of a Nitrogen -15 Microplot Design in a Furrow Irrigated Row Crop System
• Potassium Fertilization of Upland and Pima Cotton (1991-1995, a five year project review)
• Mathematical Models of Potassium Release Kinetics for Sonoran Desert Soils of Arizona
• Evaluation of Calcium Soil Conditioners in an Irrigated Cotton Production System, 1997
• Foliar Fertilizer Evaluation on Upland Cotton, 1997

PLANTING SEED

• 1997 Seed Treatment Evaluations
• 1997 Cottonseed Variety and Treatment Evaluation

DISEASES

• Fungicide Treatment and Varietal Effects on Alternaria Leaf Spot of Pima Cotton
• Interactions Between Herbicides and Cotton Seedling Damping-off in the Field
• Non-chemical Control of Cotton Seedling Damping-off in the Field
• Spatial Analysis of Aspergillus flavus S and L Strains
• Aflatoxin Contamination of Bt and Non-Bt Cottonseed
• Cotton Virus Diseases
• Diversity and Global Distribution of Whitefly-Transmitted Geminiviruses of Cotton
• Telone II^® Following Grain Rotation for Nematode Control?
• Infection of Sorghum Varieties by the Cotton Root-knot Nematode, Meloidogyne incognita