Yield and Quality of Naturally Colored Cotton Fiber Fertilized with Phosphorus Rates in the Brazilian Semiarid

Cultivating naturally colored fiber cotton has excellent potential for the Northeast of Brazil. However, its cultivation in semiarid occurs with low use technology and inputs soils phosphorus content. This work evaluated productivity quality cultivars under fertilization Brazilian region. The experimental design was randomized blocks, treatments arranged split plots four replications. five P doses were allocated main plot, subplots. Variance analyses performed characteristics each agricultural harvest. Tukey test used to compare averages harvests. Increased availability increased cultivars. Maximum yield obtained at 240; 199.11, 60 kg ha−1 first crop, respectively. maximum length reached 80.86 BRS Verde cultivar. uniformity 138.49 ha−1, cultivar Topázio greater uniformity. Fiber strength application P2O5.