effect of different organic wastes on yield and nutrient content in rice

Abstract

Abstract : v study was conducted to quantify the effect of household waste (HW), ken manure (CM) and cow dung (CD) on rice (BRRidhan29) yield and its N, id K concentrations using 11 treatments with three replications in a : .-.viomized complete block design. The treatments were (Tj) Control; (T2) : commended doses of N, p and K; (T3) HW 20 t ha-1; (T4) HW 30 t ha-1; (T5) ! /V 40 t ha-1; (T6) CM 20 t ha’1; (T7) CM 30 t ha'1; (T8) CM 40 t ha'1; (T9) CD 20 v ha*1; (Tj0) CD 30 t ha-1; and (Tj j) CD 40 t ha-1. Nutrients were supplemented by inorganic fertilizers in the treatments 3 to 11. Treatments significantly affected the production of rice and its nutrient concentration. Application of HW 40 t ha-1 produced the maximum grain yield (7.22 t ha"1), which was statistically similar with that of HW 30 t, CM 20 t and CD 40 t ha-1. Phosphorus and K contents in rice were increased with the combined application of nutrients using organic and inorganic sources. Treatments had no effects on harvest index, where the maximum value was 47% when HW was applied at the rate of 40 t ha- *. The study tells that the replenishment of nutrients using organic and inorganic sources is the best option to increase crop productivity.