Assessment of combined effect of Eleocharis atropurpurea and Fimbristylis dichotoma residues on the yield performance of T. aman rice

The current agricultural system is seeking a biological solution to lesson hazardous impacts from the use of chemicals control weeds in rice production. Plant allelopathy one ways where allelopathic plant inhibits its surrounding plants by releasing substances. present experiment was conducted at Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during period July December 2019 study effects and residues Eleocharis atropurpureaandFimbristylisdichotomaonweedmanagementandtheyieldperformance amanrice. field consisted three varieties i.e BRRI dhan34, Nizershail Kalozira five treatments such as 0, 1.0, 2.0, 3.0 t ha-1and farmer’s practices. laid out randomized complete block design (RCBD) with replications. highest grain yield (4.44 ha-1)as well contributing character recorded lowest (3.94 ha-1) obtained BBRI dhan34. number effective tillers hill-1, grains panicle-1, 1000-grain weight, straw yields were observed when residue E.atropurpureaandF.dichotomawas applied 3tha-1.Ricecultivarkalozira incorporation E. atropurpurea F. dichotoma 3 ha-1produced (5.08 tha-1) (6.77 tha-1). Results this indicate that atropurpureaand dichotomaresidue showed potentiality inhibit weed growth it has significant effect on