Abstract
A field experiment Was Conducted during winter (rabi) season of 2003-04 to 2004-05 at Regional Agricultural Research Station. Lam to know the effect of potasium on yield and fibre quality of 'Narasimha' cotton (Gossypium hirsumin). All the yield and yield components registered the highest values in treatment T-5 (NPK soil applied + foliar spray of potassium at early and peak boll formation stages) treatment, followed by treatment T-3 (NPK (90:45:45 kg/ha) soil applied + foliar spray of K @ 5kg K2O /ha at early boll formation stage) and treatment T-4 (NPK (90:45:45 kg/ha) soil applied + foliar spray of K @ 5kg K2O/ha at peak boll formation stage and lowest values were observed in treatment T-1 (control). Plant height. sympodia/plant, boll weight and seed index were high in second year. Monopodia/plant. number of bolls/plant, lint index, ginning percentage. seed cotton yield/plant and seed cotton yield (kg/ha) were high during, first year. Non significant differences were existed among the treatments for fiber quality parameters during both the years except for 2.5% span length and bundle strength during second year. Improvement in fiber quality parameters composition and uptake were maximum in treatment T-5 and minimum in T-1 during both the years. Nutrient uptake was more during second year than the first year due to more drymatter accumulation in the plant.