Effect of potash management through conjoint use of Gliricidia green leaf manure and mineral fertilizer on yield and nutrient uptake by rainfed cotton in vertisols

Abstract

The green manures are a valuable potential source of nitrogen and organic matter. They play an important role in improvement of physical, chemical and biological properties of soil with increase in the microbial population in soil. Hence, a field study to know the effect of conjoint use of Gliricidia green leaf manure and mineral fertilizer on yield and nutrient uptake of cotton in Vertisols was conducted during kharif 2017 at Research field of AICRP for Dryland Agriculture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra. The results revealed that the use of Gliricidia green leaf manuring as a potassium in conjunction with chemical fertilizers resulted in higher seed cotton yield and nutrient uptake by cotton. The application of 100% NP + 10kg K (inorganic) +20 kg K through Gliricidia was found to be beneficial for higher yield and nutrient uptake by cotton in Vertisols.