2003 GEORGIA COTTON
RESEARCH AND EXTENSION REPORTS

Edited by O. Lloyd May, Philip Jost, and Phillip Roberts
Compiled by Cindy Hester

Georgia Agricultural Experiment Stations
Georgia Cooperative Extension Service
University of Georgia College of Agricultural and Environmental Sciences
U. S. Department of Agriculture

The Georgia Cotton Research and Extension Work Group would like to graciously thank the following for their support of cotton research and education in Georgia:

• The Georgia Agricultural Commodity Commission for Cotton
• Cotton Incorporated
• The Cotton Foundation

SUPPORTERS

The Georgia Cotton Research and Extension Work Group would also like to thank the following for their continued support of cotton research and education in Georgia:

TABLE OF CONTENTS

INTRODUCTION

• The 2003 Crop Year In Review

AGRICULTURAL AND APPLIED ECONOMICS

• 2003 Colquitt County Systems Trial Yield, Quality, Costs, And Net Returns
• Planting And Harvest Timeliness Of Cotton And Peanuts

ANIMAL AND DAIRY SCIENCE

• Effect Of Select Additives On Ruminal Fermentation Of Whole Cottonseed Coated With Gelatinized Corn Starch
• Effect Of Feeding High Free Fatty Acid Whole Cottonseed On Milk Yield And Composition Of Lactating Dairy Cows
• Increasing Performance Of Growing Cattle After Weaning Using Cottonseed And Cottonseed Meal Supplements
• Integration Of Winter Grazing And Irrigated Cotton Production

BIOLOGICAL AND AGRICULTURAL ENGINEERING

• Cotton Growth And Development Monitoring During 2003
• Application Of Weather Data For Management Of Cotton Production In 2003

CROP AND SOIL SCIENCES

• Development Of DNA Markers For Root-Knot Nematode Resistance In Cotton
• Mepiquat Studies On DP 555 BG/RR In 2003
• Production Input Experiments, 2003
• Timing Of Initial And Final Irrigations In Cotton
• Cotton Crop Water Use And Irrigation Scheduling
• Yield, Quality And Profitability Of Cotton At Various Plant Populations
• Secondary Gene Pool Contributions In U.S. Upland Cotton
• Weed Response To Liberty Link Herbicide Systems In Cotton
• Does Glyphosate Applied Topically To Roundup Ready Cotton After The Five-Leaf Stage Affect Fiber Quality?
• Roundup Ready Cotton Response To Glyphosate Plus Staple Or Envoke Applied Topically
• Progress In Eliminating Black Root In Flatwoods Soils
• Comparison Of Mepiquat Pentaborate And Mepiquat Chloride Effects On DP 555 BR
• Evaluations Of Skip-Row Cotton Production Across Multiple Yield Environments
• A New Class Of DNA Markers In Cotton
• Genetic Diversity Of U.S. Upland Cotton
• Breeding Cultivars And Germplasm With Enhanced Yield And Quality
• 2003 Cotton Research - Extension Report: Plant Genome Mapping Laboratory
• Remote Sensing And Soil Moisture Measurements In Irrigation Management
• Putrescine Improves Somatic Embryogenesis And Plant Regeneration In Select Cotton
• Early Season Weed Competition In Roundup Flex Cotton

ENTOMOLOGY

• Abundance Of Heliothine Moths In Traps At The Interface Of Bt Cotton With Various Crops In Four Georgia Counties
• Control Of Seedling Thrips With Foliar Insecticide Applications
• Stink Bugs Insecticide Efficacy Trials - 2003
• Impact Of Dimilin On Grasshoppers In Seedling Cotton
• Insecticide Resistance Monitoring In Lepidopteran Cotton Pests
• Thrips Abundance And Effects Of Insecticidal Control On Cotton Growth And Yield In South Georgia
• Effects Of Planting Date, Irrigation, And Insecticide Treatments On The Cotton Aphid In Cotton
• Efficacy Of Selected Insecticides Against Stink Bugs In Tift Co. Cotton And Their Impact On Big-Eyed Bugs
• Pesticide Effects On Insect Natural Enemies Of Cotton Pests

NATIONAL ENVIRONMENTALLY SOUND PRODUCTION AGRICULTURE LABORATORY

• Documenting Water Savings From Variable-Rate Irrigation Control
• Quantifying Instantaneous Accuracy Of Cotton Yield Monitors

PLANT PATHOLOGY

• Efficacy Of Nematicides With Thrips-Management Considerations On Southern Root-Knot And Columbia Lance Nematodes In Georgia
• Effects Of Plant Population And Fungicide Treatment On Seedling Diseases Of Cotton

STATEWIDE VARIETY TESTING PROGRAM

• 2003 Cotton Variety Trials

USDA / AGRICULTURAL RESEARCH SERVICE

• Tolerance to The Southern Root-Knot Nematode In Commercial Cotton Cultivars