Re-Assessment of the Nutrient Accumulation and Requirements of Modern Cotton Cultivar in Southern High Plains

With the optimization in the areas of genetics and crop management practices, it is possible that the nutrient accumulation and requirement rates of modern cotton cultivars may have changed over the past years. In 2018, a field experiment was conducted in New Deal, Texas to re-evaluate the macronutrient and micronutrient demands of modern cotton cultivars in Southern High Plains. The performances of three cotton cultivars grown under five rates of nitrogen (N) fertilizer were evaluated based on in-season measurements (biomass partitioning, plant height, nutrient and soil analysis) and end-season measurements (lint yield, fiber quality). The results will be used to re-calibrate the nutrient demand curves to optimize fertilizer application and increase cost efficiency of cotton production.