Effect of organic sources of nutrients and weed management on weed flora, basmati rice growth and yield in Jammu region

摘要

A field experiment was conducted during Kharif (rainy) seasons of 2015 and 2016 to study the response of varying organic and inorganic sources of nutrients and weed management on weed flora, basmati rice growth and yield. Application of 100 organics+ vesicular-arbuscular mycorrhiza (VAM) recorded significantly higher values of growth parameters, yield attributes, grain yield, net returns and B:C ratio of rice which was statistically at par with 100 organics + marigold for potato on border as trapcrop and bottle guard as trap crop for french bean and 100 organics (100 recommended nitrogen using different organic sources each equivalent to 1/3 of recommended nitrogen i.e. farm yard manure (FYM)+ vermicompost + non edible oil cake). Amongst the weed management treatments, application of mustard seed meal 5 t/ha resulted in significantly lowest weed density and biomass (species wise and total); highest weed control efficiency; lowest weed index; highest growth, yield attributes and grain yield ofbasmati rice which was statistically at par with application of rice bran 4 t/ha and weed free treatment. However, the highest net returns and B:C ratio were obtained in weed free plots.