Effects of Wood Vinegar Mixed with Cyhalofop-butyl+bentazone or Butachlor+chlomazone on Weed Control of Rice (Oryza sativa L.)
2007
Rico, Cyren M. (Kyungpook National University, Daegu, Republic of Korea) | Mintah, Lemuel O. (Kyungpook National University, Daegu, Republic of Korea) | Souvandouane, Souliya (Kyungpook National University, Daegu, Republic of Korea) | Chung, I.K. (Catholic University of Daegu, Gyungsan, Republic of Korea) | Shin, D.I. (Catholic University of Daegu, Gyungsan, Republic of Korea) | Son, T.K. (RnD Center, ISTECH, Inc., Gyeongsan, Republic of Korea) | Lee, S.C. (Kyungpook National University, Daegu, Republic of Korea), E-mail: [email protected]
The effects of combined treatments of wood vinegar and commonly used foliar and soil-applied herbicides on weed control, yield and yield components, and quality of rice were investigated. The herbicides tested were cyhalofop-butyl+bentazone and butachlor+chlomazone. Treatments used were recommended (RH : 100%) application rate, half-recommended (HRH : 50%), HRH+500 wood vinegar, and HRH+1000 wood vinegar. This study showed that cyhalofop-butyl+bentazone obtained significantly higher efficacy in HRH+1000 wood vinegar compared to HRH alone. However, no butachlor+chlomazone treatment obtained sinificantly higher efficacy compared to HRH alone. In cyhalofop-butyl+bentazone, highest rice yield was obtained in HRH+1000 wood vinegar. In case of butachlor+chlomazone, a decreasing rice yield from RH to HRH plus wood vinegar treatments was obtained. Spikelet number and ripening ratio are the mainly affected yield component parameters while the other parameters did not show significant variations in values with wood vinegar treatment. There was no clear trend on the effects of treatments on grain appearance and nutritional quality.
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