Effect of Azospirillum on Fibre Quality and Yield of Irrigated Cotton

To study the effect of Azospirillum on fibre quality and yield of irrigated cotton, a field experiment was conducted during the year 2003-2004. The field experiments were conducted using Randomized Block Design. Amongst the different strains of Azospirillum, Surat strain of Azospirillum brought about maximum increment in number of branches and number of bolls, maximum boll weight and highest cotton seed yield. The span length, uniformity ratio, tenacity and elongation percentage (EIG per cent ) were increased while the micronaire value and shoot fibre index (SFI) were minimum with the application of Surat strain of Azospirillum, which are being considered as average to medium type, good elongation and excellent quality fibres.