Response of transplanted aman rice varieties to herbicides in strip-tilled non-puddled soil

Authors

  • Taslima Zahan On Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh
  • Md Moshiur Rahman Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
  • Abul Hashem Department of Primary Industries and Regional Development, Food and Agriculture, Australia
  • Mahfuza Begum Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

DOI:

https://doi.org/10.5455/faa.275840

Keywords:

Crop growth, herbicide, non-puddled transplanting, rice, weed control

Abstract

Sensitivity of crop cultivars may vary to commonly used herbicides resulting in potential yield loss and reduce farm profit. Transplanting of rice seedlings in strip- tilled non-puddled field is a new practice for which herbicide tolerant varieties need to select. Therefore, a study was executed at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh during 2013 to evaluate the response of some popular transplanted aman rice varieties to different herbicides at their recommended rate and to select most tolerant aman rice variety or varieties for strip-tilled non-puddled transplanting. Twelve aman rice varieties (BR11, BRRI dhan33, BRRI dhan39, BRRI dhan44, BRRI dhan46, BRRI dhan49, BRRI dhan51, BRRI dhan52, BRRI dhan56, BRRI dhan57, BRRI hybrid dhan-4 and BINA dhan7) were examined in the study against six herbicides (2 pre-emergence: pyrazosulfuron-ethyl and butachlor; 1 early post-emergence: orthosulfamuron and 3 late post-emergence: acetochlor + bensulfuron methyl, butachlor + propanil and 2,4-D amine) along with one untreated manually weed-free control. The study revealed that aman rice varieties responded differentially to different herbicides. All rice varieties performed better in pyrazosulfuron-ethyl treated plots relative to the other herbicide treated plots and even than the control plots. Pyrazosulfuron- ethyl increased grain yield of all aman rice varieties by 0.6-32.6% over control and butachlor + propanil provided increased grain yield in all rice varieties by 2.0- 25.5% except BRRI hybrid dhan-4. The study also disclosed that BRRI dhan57 and BRRI hybrid dhan-4 gone through the yield loss by application of 2,4-D amine and BRRI dhan56 by application of butachlor and orthosulfamuron. Moreover, acetochlor + bensulfuron methyl made plants shorter and caused yield loss by 7.8- 27.1% in all aman rice varieties and BRRI dhan39 was the most susceptible variety to this herbicide. Therefore, the study concluded that all transplanted aman rice varieties were tolerant to the recommended rate of pyrazosulfuron-ethyl. BRRI dhan33, BRRI dhan46, BRRI dhan51 and Binadhan-7 were the tolerant aman rice varieties for strip-tilled non-puddled transplanting. All over, this study demands that breeder should undergo the herbicide sensitivity test before release of rice varieties.

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Published

2017-10-20

How to Cite

Zahan, T., Rahman, M. M., Hashem, A., & Begum, M. (2017). Response of transplanted aman rice varieties to herbicides in strip-tilled non-puddled soil. Fundamental and Applied Agriculture, 2(3), 303–310. https://doi.org/10.5455/faa.275840

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Original Article