쌀겨 펠렛을 이용한 친환경 논 잡초 방제
Evaluation of Rice Bran Pellet for Environment-sound Weed Control in Paddy Fields
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초록
Weed control is one of the important and difficult practices in environment-sound agriculture. This study was conducted to establish environment-sound weed control in paddy fields using rice bran pellet. Application of rice bran pellet at a rate of 1~3 Mg ha-1 reduced weed occurrence by 46~69% without using any chemical herbicide. However, rice bran application at a rate of greater than 2 Mg ha-1 increased protein content in milled rice and decreased palatability value. Therefore, fertilization rate before transplanting needs to be reduced from N-P2O5-K2O = 55-45-40 kg ha-1 to 28-23-20 kg ha-1, in order to decrease protein content and increase palatability value without decreasing rice yield. Pyroligneous acid and brown rice vinegar had a relatively weak activity to inhibit weed emergence compared with rice bran. When butachlor herbicide was applied at a rate of 0.75 kg ha-1, 50% of recommended rate, co-application of rice bran pellet at a rate of 1 Mg ha-1 enhanced weed control value from 63% to 75%.
Abstract
Weed control is one of the important and difficult practices in environment-sound agriculture. This study was conducted to establish environment-sound weed control in paddy fields using rice bran pellet. Application of rice bran pellet at a rate of 1~3 Mg ha-1 reduced weed occurrence by 46~69% without using any chemical herbicide. However, rice bran application at a rate of greater than 2 Mg ha-1 increased protein content in milled rice and decreased palatability value. Therefore, fertilization rate before transplanting needs to be reduced from N-P2O5-K2O = 55-45-40 kg ha-1 to 28-23-20 kg ha-1, in order to decrease protein content and increase palatability value without decreasing rice yield. Pyroligneous acid and brown rice vinegar had a relatively weak activity to inhibit weed emergence compared with rice bran. When butachlor herbicide was applied at a rate of 0.75 kg ha-1, 50% of recommended rate, co-application of rice bran pellet at a rate of 1 Mg ha-1 enhanced weed control value from 63% to 75%.
참고문헌 (14)
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