Influence of planting geometry and nutrient management on yield, quality parameters, nutrient uptake and economics of compact cotton (Gossypium hirsutum L.) genotypes

Abstract

A field experiment was conducted during the Kharif 2015at Agricultural College farm, Raichur. The results of this experiment revealed that seed cotton yield, quality parameters and economics of Rahc-1011 were statistically par with Rahc-1012. Spacing of 60cm x 30cm recorded significantly higher seed cotton yield, gross returns, net returns and BC ratio((1922kg ha-1, Rs. 86,487, Rs. 54,571 ha-1 and 2.70, respectively) as compared to 60cm x 45cm spacing (1566kg ha-1, Rs. 70,475, Rs. 39,023 ha-1 and 2.23, respectively) and was on par with 60cm x 15cm spacing (1816kg ha-1, Rs. 84,056, Rs. 51,605 ha-1 and 2.58, respectively). Application of 125 per cent RDF recorded significantly higher seed cotton yield (2012kg ha-1), nutrient uptake (115.60, 31.98 and 124.53kg N, P and K ha-1) and BC ratio (2.73) of compact cotton genotypes when compared to 100 per cent RDF (1871kg ha-1, 102.76, 26.47 and 115.12kg N, P and K ha-1, 2.59, respectively), and 75 per cent RDF (1473, 79.65, 18.04 and 89.56kg N, P and K ha-1, 2.19, respectively). The spacing of 60cm x 45cm recorded significantly higher ginning per cent and lint index (35.54% and 4.44) as compared to 60 x 15cm spacing (33.44% and 3.82)