Improvement of Weed Competitiveness and Yield Performance of Dry Direct Seeded Rice through Seed Priming

Authors : Md Parvez ANWAR, Md. Kawser AHMED, A K M Mominul ISLAM, Md Delwar HOSSAİN, F M Jamil UDDİN

Pages : 15-23

View : 13 | Download : 6

Publication Date : 2020-06-30

Article Type : Research Paper

Abstract :The study was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University during January to May 2019 to investigate the seed priming influence on the growth, weed suppression ability and yield of BRRI dhan29 and weed growth under dry direct seeded insert ignore into journalissuearticles values(DDS); condition. Seed priming agents included NaCl insert ignore into journalissuearticles values(20000 and 30000 ppm);, KCl insert ignore into journalissuearticles values(20000 and 30000 ppm);, CaCl2 insert ignore into journalissuearticles values(20000 and 30000 ppm);, CuSO4 insert ignore into journalissuearticles values(50 and 75 ppm);, ZnSO4 insert ignore into journalissuearticles values(10000 and 15000 ppm);, Na2MoO4 insert ignore into journalissuearticles values(2 and 3 ppm);, PEG insert ignore into journalissuearticles values(100 and 150 ppm); and control insert ignore into journalissuearticles values(no priming);. The experiment was laid out in a randomized complete block design with three replications. Data were collected on growth, yield parameters, yield of rice and weed growth in terms of weed density and dry matter. Rice plant height and tillering ability were significantly enhanced due to seed priming. Among yield parameters, number of effective tillers hill-1 and number of grains panicle-1 were positively influenced due to seed priming resulting yield enhancement up to 18% compared to control. But, seed priming failed to enhance the weed competitiveness of rice resulting similar weed growth for primed and control treatments. Therefore, seed priming with 20000 ppm KCl or 20000 ppm CaCl2 may be practiced for enhancing yield of BRRI dhan29 under DDS condition.
Keywords : Aerobic rice, seed invigoration, weed suppression, winter rice, grain yield