Effect of different organic sources of nutrients and green manure on growth and yield parameters of rice (Oryza sativa L.) grown under lowland condition

An experiment was conducted at Agriculture College & Research Institute, Coimbatore, Tamil Nadu, to study the effect of different organic sources of nutrients with and without green manure in rice on growth and yield parameters. Treatments consisted of green manure incorporation (GMI) and without GMI were assigned to main plot. Treatments in the sub-plot consisted of farm yard manure (FYM), poultry manure (PM) and vermicompost, alongwith control (no manure) were replicated three times in a split plot design. The study revealed that in situ incorporation of green manure recorded higher values of growth parameters viz., plant height, LAI, dry matter production, number of tillers/m2, root length, root volume and root weight compared to without GMI. Among the manures application, similar trend was observed with poultry manure application compared to vermicompost, FYM and control. Green manure+poultry manure recorded the highest grain and straw yield with high yield attributing characters viz., panicle length, total number of grains/panicle, number of filled grains/panicle and lesser sterility percentage compared to other combinations.