Effect of Fertilizer Management on Yield and Economics of Hybrid Bt Cotton

A field experiment was conducted at Cotton Research Station, Junagadh Agricultural University, Junagadh (Gujarat) during Kharif seasons of 2006-07 and 2007-08 to find out the effect of fertilizer management on productivity and economics of hybrid Bt cotton (Gossypium hirsutum L.). Conjunctive use of nitrogen, phosphorus and potassium in collaboration with 240 kg N ha^-1+50 kg P₂O₅ ha^-1+120 kg K₂O ha^-1 fertilizer doses produced significantly higher seed cotton and stalk yield of Bt cotton as compared to its counterpart of N, P and K, whether applied alone or in combination with NPK. The yield attributes like number of bolls per plant, boll weight (g), number of seeds per boll, 100-seed weight (g) and ginning % increased by considerably, it was found that fertilizer management of nitrogen, phosphorus and potash higher levels gave higher net income per hectare (Rs. 52902/ha.) and B:C ratio (2.12) as compared to lower levels of NPK.