Abstract

                                A field experiment was conducted in Tamil Nadu Agricultural University farm, Coimbatore to compare the organic nutrient management packages with integrated nutrient management (INM) in cotton. The experiment was consisted of eighteen treatments, laid out in Randomized Complete Block Design and replicated thrice. The results revealed that INM practices increased the plant height over other treatments. Significant increase in yield components like sympodial branches plant-1, number of bolls plant-1 and boll weight were observed under INM treatment and was at par with recommended dose of fertilizers (RDF), Farm yard manure and poultry manure compared to all other treatment combinations. The INM practice resulted in significantly higher seed cotton yield and was comparable with RDF. The quality characters did not exhibit any significant variation among the nutrient management practices. Higher gross and net returns and B:C ratio were also recorded in INM practices.

Key words : Organic cotton, Nutrient management, Seed cotton yield, Fibre quality