INVESTIGATING EFFECTS OF RICE HERBICIDES ON CONTROLLING RATOON WEED
|Abas pournasrollah1, Hassan Nickkhah Bahrami2, Reza Valiollahpour3 and Mohammad Hossein Haddadi3
|Received: 04 January 2014 Accepted: 25 February 2014|
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Field trials were conducted to evaluate various herbicids for weed control in rice farm (ratton rice crop) in Sari, Iran during the summer season of 2012. Six herbicide treatments were evaluated and compared with hoe weeding control and a weedy check in a randomized complete block design with four replications. All the weed control treatments and hoe weeding significantly reduced weed growth and resulted in higher rice grain yields than the respective weedy check. Among the various herbicide treatments tested application of Sunriceplus (Anilofus + Auto oxi sulforon), Stuff (Sinosulforon), londux (Bensulforon-methyl)+Machete –EN (Botakolor), Londux (Bensulforon-methyl) and hoe-weeded control consistently combined effective weed control with good crop growth and high kernel yields with 2175,2092/5,1940,1897/5 and 18 kg/ha comparable to the weedy check (1065kg/ha). Herbicides effect on weeds of Echinochloa crus-galli (L.) P. Beauv., Cyperus difformis L., Cyperus rotundus L., Cyperus globosus Aublet, and Scirpus mucronatus L. also were studied. Londux had the highest effect on all of the weeds except Cyperus globosus Aublet. Hoe weeding effect was nearly same as Sunriceplus. All of the herbicides were effective on weeds in compare of weedy check.