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Effect of 22-Year-L​ong Conjunctive Use of Organic and Chemical Sources of Nutrients on Crop Yield, Soil Properties, and Nutrient Balance in Post-Monsoon Sorghum (Sorghum bicolor L.) in Peninsular Vertisols of India

Author:
Srinivasarao, Ch., Kundu, Sumanta, Sharma, K. L., Thakur, Pravin B., Amrutsagar, V. M., Deshpande, A. N., Pharande, A. L., Balloli, S. S., Arunachalam, A., Soam, S. K.
Source:
Communications in soil science and plant analysis 2018 v.49 no.13 pp. 1570-1585
ISSN:
1532-2416
Subject:
Leucaena, Sorghum bicolor, Vertisols, animal manures, calcium, crop residues, crop yield, field experimentation, mineral fertilizers, nitrogen, nutrient availability, nutrient balance, nutrients, phosphorus, potassium, soil properties, urea, India
Abstract:
A long-term field experiment was conducted in Vertisols of Solapur (Maharashtra, India) to assess the effect of the integrated use of nutrients on yield, soil properties, and nutrient balance in post-monsoon sorghum. The highest crop yield (1.19 Mg ha⁻¹) and available nutrients (308, 14.9, and 814 kg ha⁻¹ nitrogen (N), phosphorus (P), and potassium (K), respectively) were recorded in the treatment of 25 kg N sorghum crop residue (CR) + 25 kg N Leucaena clippings (LCs), 25 kg N (CR) + 25 kg N (urea), 25 kg N farmyard manure + 25 kg N (urea), and 25 kg N (CR) + 25 kg N (LC), respectively. Most of the nutrients were depleted except K and Ca. The response ratio for N (16 kg kg⁻¹) and partial factor productivity (33 kg kg⁻¹) were considerably higher in the 25 kg N (CR) + 25 kg N (LC) treatment. Conjunctive use of organic ​and chemical fertilizers helped in reducing the nutrient losses and improved their use efficiency and yield sustainability.
Agid:
6062143