EFFECT OF MULCHING AND 0RGANIC MANURE ON THE GROWTH AND YIELD OF LETTUCE

Abstract

The experiment was conducted in the reid of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from October 2007 to February 2008. The experiment considered with two Factors, Factor A: Four types of mulching; M0: No mulching (control): NI : Dry water hyacuith: M2: Black polythenc and M 3 : Dry rice straw: Factor B: Four types of organic manure: OM 0 : No organic manure (Control); OM : Cov:dung (20 iIha); 0M 2: Poultry manure (10 tIha); 0M 3 : Vermicompost (10 L'ha). The two thctor experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. In case oL mulching, the highest result (43.67 t/ha) was (mind from M 3 and lowest (36.21 t/ha) from control. In case of organic manure, the highest result (45.25 t!ha) was found from 0M 3 and lowest (34.38 i/ha) from control. For combined etlèct the highest result (50.00 t/ha) was found from M-,0M3 and the lowest (32.47 t/ha) from M 00M0.lhe highest henelit cost ratio (3.37) was recorded from M 1 0M2 and the lowest benefit cost ratio (2.39) was recorded from M70M 0 . So, dry water hyacinth with poultry manure was more effective for growth and yield of leauce.