Effect of tillage intensity fertilizer and manuring on yield and yield contributing characters of rice

Abstract

The experiment was carried out at Bangladesh Agricultural University Farm, Mymensingh during aman season of 2008 to reveal the effect of tillage intensity, fertilizer and manuring on yield and yield contributing characters of rice. The experiment consisted of three main plot treatments and four sub-plot treatments. The main plot consists of tillage treatments such as; one passing (P₁), two passings (P₂) and three passings (P₃) of a power tiller. Again the sub plot having fertilizer and manure treatments, characterized as; recommended dose of fertilizer (FM₀), 50% of N plus rest of recommended dose of fertilizers + cowdung @ 5 t ha^-1 (FM₁), 50% of N plus rest of recommended dose of fertilizers + rice straw @ 5 t ha^-1 (FM₂) and 50% of N plus rest of recommended dose of fertilizer + cowdung @ 2.5 t ha^-1 plus rice straw @ 2.5 t ha^-1 (FM₃). Data was collected for plant height, number of tiller/hill, panicle length, number of grains/panicle, 1000 grain weight, grain yield and straw yield. Incase of tillage intensity, most of all the characters but plant height showed significant differences and P₃ was found the best treatment. Regarding fertilizer and manure treatments, there were significant difference among the characters except panicle length and 1000 grain weight and FM₀ demonstrated the best result. Considering all the treatment in to account with special emphasis on yield P₃FM₀ combination was found the best treatment which exhibited the highest number of tiller/hill (13.88), number of grains/panicle (141.41) and grain yield (4.98 t/ha), respectively.