ALLELOPATHIC EFFECT OF DIFFERENT WEED RESIDUES TO CONTROL WEEDS IN AMAN RICE FIELD

Abstract

A field experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural University (SAU), during July to December, 2010 with a view to find out allelopathic (eco-friendly concept) effect of different weed residues to control weeds in Aman rice field. The experimental treatments included three T-aman rice varieties viz. BRRI dhan46. Guti Swarna and Ranzit variety and five different allelopathic materials viz.Control, Lantena camera, Goose weed, Ban sharisha and Araich. Results showed that rice cultivars differed significantly in all growth and yield contributing characters and Ranzit produced highest grain yield (5.35 t h& 5. Among the treatments of allelopathic materials araich performed the best on all the parameter studied and gave highest grain yield (5.44 th&). Interaction showed significantly higher grain yield, was given by Ranzit with allelopathic materials araich (6.51 t h&5. The higher grain yield was attributed to the higher effective tillers hilF1(13.67). filled grains panicle'(256.00) and 1000- grain weight (23.83g).