Abstract

A field experiment was carried out at MARS, Dharwad during kharif 2010–11 and 2011–12 to study the impact of organic nutrient management practices on yield, quality parameters, energy use efficiency and energy productivity of cotton. The results of the two years’ pooled data revealed that application of EC (1/3)+VC (1/3)+GLM (1/3) equivalent to RDF recorded significantly higher kapas yield (1944 kg/ha). Foliar spray of panchagavya @ 5% recorded significantly higher kapas yield (2038 kg/ha). Among the nutrient management practices, integrated application of EC (1/3)+ VC (1/3)+GLM (1/3) equivalent to RDF recorded significantly higher uniformity ratio (43.19%), fibre length (27.27%) and lint index (5.33) over FYM @ 5 t/ha+RDF and was on par with EC (1/3)+VC (1/3)+gliricidia GLM (1/3) equivalent to RDN. The foliar spray of panchagavya @ 5% recorded significantly higher uniformity ratio (41.43%), fibre length (27.83%), maturity ratio (0.67), bundle strength (22.14 g/t) and lint index (5.36) over foliar spray of bio-digester @ 20%. Among the different treatment combinations, application of EC (1/3)+VC (1/3)+gliricidia GLM (1/3) equivalent to RDF with foliar spray of panchagavya @ 5% recorded significantly higher uniformity ratio (44.65%), fibre length (28.23%), maturity ratio (0.69), bundle strength (22.65 g/t) and ginning percentage (35.60%) over RDF+FYM.