Effect of organic manure, fertilizer level and seed rate on yield and quality of late-sown wheat (Triticum aestivum)

A fixed plot field experiment was conducted during winter during seasons of 1992-94, to study the effect of organic manure, fertilizer level and seed rate on yield and quality of late-sown wheat (Triticum aestivum L. emend. Fiori & Paol.). Organic manuring at 10 tonnes/ha recorded higher values of yield attributes, grain and straw yields, grain protein content, net return and net return/rupee investment than no organic manure. Application of 150% more than recommended dose of fertilizers (100:50:25 kg N : P : Wha) recorded significantly higher grain yield, harvest index and grain protein content than the lower levels of fertilizers. However, net return and net return/rupee investment with 125% or 150% more application of fertilizers than the recommended dose were at par. The seed rate of 200 kg/ha recorded significantly higher grain and straw yields than 150 and 100 kg/ha but both net return and net return/rupee investment were at par with 150 kg seed rate. Protein content in grain was unaffected by seed rates. The seed rate of 150 kg/ha recorded significantly higher harvest index than 200 kg seed/ha. Application of 10 tonnes/ha organic manure along with the recommended dose of fertilizer resulted in the same yield as obtained with 125% higher dose of fertilizers. However, 10 tonnes organic manure together with 125% more than the recommended dose of fertilizers recorded significantly higher grain yield than the application of 150% more fertilizers alone.