Dr. Simerjeet Virk

Assistant Professor & Extension Precision Ag Specialist|University of Georgia

2023 Abstract - HOW CHOICE OF SOIL SAMPLING STRATEGY IMPACTS APPLICATION ACCURACY AND ECONOMICS OF SITE-SPECIFIC NUTRIENBT MANAGEMENT IN COTTON?: Proper nutrient management is important to attain high-yielding cotton. Several soil sampling strategies including both traditional and precision methods –grid and zone –are commonly used by growers across the Cotton Belt to determine nutrient requirements prior to fertilization. With high fertilizer prices, it is important to utilize a soil sampling strategy that not only effectively depicts the actual nutrient spatial variability within a field but is also cost-effective. Information on how different precision soil sampling strategies, especially different grid sizes and zones based on different spatial layers, influence the application accuracy and economics of variable-rate fertilizer applications in cotton will be shared.