Effects of mechanical weeding on the dominant upland weeds in Northeast Thailand
Country
Thailand
Description
[Synopsis]
Mechanical weeding with the use of small rotary tiller attached to soil manipulator was effective to control a dominant upland weed, Richardia scabra L. in Northeast Thailand. Inter-tillage between the row of crops could be conducted at a walking speed (1.6 m/min) alleviating the hard labor for hand weeding. Weeds lost the water content after uprooting and eventually withered to death. In the field condition, 2～3 hours was enough to reach this critical water deficit, which could be used as a criterion of operation under variable weather conditions. We also observed the difference in the effects of mechanical weeding on the growth of crops and weeds. The fast growing crops such as sorghum and pearl millet were more tolerant to weeds, and the frequency of weeding could be reduced compared to that for relatively slow growing crops such as sweet corn and mungbean. Proliferation of weeds was also suppressed by the former crops.
- Affiliation
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Japan International Research Center for Agricultural Sciences Crop Production and Postharvest Technology Division
- Classification
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Administration
- Term of research
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FY2000 (FY1995-2000)
- Responsible researcher
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KABAKI Nobuyuki ( Crop Production and Postharvest Technology Division )
MORITA Hirohiko ( National Agriculture Research Center )
- ほか
- Japanese PDF
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2000_14_A3_ja.pdf1.06 MB