Efficacy of herbicide combinations for weed management in transplanted rice

Efficacy of herbicide combinations for weed management in transplanted rice

Authors

  • Meera V Menon College of Horticulture, Kerala Agricultural University
  • T. K. Bridgit College of Horticulture, Kerala Agricultural University
  • T. Girija College of Horticulture, Kerala Agricultural University

Keywords:

Ethoxy sulfuron, Herbicide combinations, Transplanted rice, Triafamone,

Abstract

An experiment was conducted in farmer’s field at Alappad kole in Thrissur district to evaluate the bio efficacy of herbicide combinations for broad spectrum weed control. The treatments were : post-emergence application of bispyribac-sodium 25 g ha-1, penoxsulam 24% SC 22.5 g ha-1, bispyribac-sodium 25 g ha-1 + ethoxy sulfuron 18.75 g ha-1, bispyribac- sodium 25 g ha-1 + premix of (chlorimuron-ethyl and metsulfuronmethyl) 4 g ha-1, pre-emergence application of pretilachlor 750 g ha-1 followed by (fb) post-emergence application of ethoxy sulfuron 18.75 g ha-1,  re-emergence application of pretilachlor 750 g ha-1 fb postemergence  application of premix of (chlorimuron-ethyl and metsulfuron-methyl) 4 g ha-1, pre-emergence application of pyrazosulfuron ethyl 20 g ha-1 fb post-emergence application of premix of (chlorimuronethyl and  metsulfuron-methyl) 4 g ha-1, post-emergence application of premix of  penoxsulam + cyahalofopbutyl 6% OD 135 g ha-1, post-emergence application of premix of triafamone + ethoxy sulfuron 60 g ha-1, pre-emergence application of pendimethalin 750 g ha-1 fb  post-emergence application of bispyribac-sodium 25 g ha-1, hand weeding at 25 and 45 DAT and weedy check. Hand weeding resulted in highest weed control and grain yield. Among the herbicide combinations, lowest weed dry matter production and weed control efficiency, and highest grain yield were recorded by triafamone combined with ethoxy sulfuron, and bispyribac- sodium combined with premix of (chlorimuron-ethyl + metsulfuron- ethyl).  All treatments were significantly superior to unweeded control.

Author Biographies

Meera V Menon, College of Horticulture, Kerala Agricultural University

College of Horticulture, Kerala Agricultural University

T. K. Bridgit, College of Horticulture, Kerala Agricultural University

College of Horticulture, Kerala Agricultural University

T. Girija, College of Horticulture, Kerala Agricultural University

College of Horticulture, Kerala Agricultural University

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Published

31-03-2017

How to Cite

Menon, M. V., Bridgit, T. K., & Girija, T. (2017). Efficacy of herbicide combinations for weed management in transplanted rice. Journal of Tropical Agriculture, 54(2), 204. Retrieved from https://jtropag.kau.in/index.php/ojs2/article/view/382

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Section

Short communications

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