Assessing the effects of cultivar and nitrogen application rate on seedling vigor and early‐season canopy growth in cotton

Cultivar variation in seed characteristics can affect seedling vigor, and nitrogen (N) availability influences early-season growth some instances. However, interactions between cultivar N application rate for have received limited attention. Thus, the objectives of this research were to quantify effects cultivar, N-application rate, their interaction on growth, predict vigor from plant morphology, identify associations crop rates (CGR) other indices. To end, a 2-year (2018 2019) field study was conducted using six cotton cultivars having different rates. In both years, all single-plant whole-crop indices affected by but not A function developed that strongly predictive (R2 = 0.78) dry weight utilized only height mainstem node assessments. Leaf area index strong consistent predictor CGR, whereas net assimilation associated with CGR one 2 years. it is concluded two factors assessed current study, dominant driver up 35 days after planting. Additionally, leaf development more than average canopy. contrast, an at planting did or canopy cotton.