Effect of systems of rice cultivation, cultivars and nutrient management options on growth, yield attributes and yield of rice

A field experiment was conducted at the Directorate of Rice Research Farm, Rajendranagar, Hyderabad during kharif 2006. The experiment was laid out in a splitsplit plot design replicated thrice with two methods of cultivation (SRI and NTP), two cultivars (PSD-1 and BPT-5204 ) and six nutrient management options (5 t FYM/ha, 10 t FYM/ha, 50% RDF, 100% RDF, 5 t FYM/ha+50% RDF and 10 t FYM/ha+50% RDF). The results indicated that between the methods of cultivation, NTP method recorded highest plant height, tiller number and total dry matter production at different stages, yield components viz., panicles/m2, test weight and straw yield. However, SRI recorded an additional grain yield of 276 kg/ha over NTP method due to more number of filled grains/ panicle and better partitioning (H. I.). The hybrid PSD-1 performed better in terms of growth and development of the crop, yield components resulting in significantly higher grain and straw yields over BPT-5204. Among the different nutrient management options, application of FYM @ 10 t/ha alongwith 50% RDF recorded significantly higher growth parameters and yield attributes consequently resulting in highest grain and straw yields. This was followed by 5 t FYM/ha+50% RDF and 100% RDF alone treatments.