Abstract
Weed control is of fundamental importance when planting cereal crops, particularly during the establishment phase. Weeds compete for nutrients, water and light, and can severely threaten the survival and early growth of newly planted crops. Field experiment was conducted to evaluate the effect of ethanol treatment on the weed control efficacy in cereal crops in protected vinylhouse. Five treatments like water, 25 L, 50 L, 75 L, and 100 L per $m^{-2}$ at 2% ethanol were applied and covered with vinyl on 10 days before foxtail millet seeding. After that, foxtail millet seeds were sown on June 20 at $60{\times}10cm$ planting distance and weed control efficacy was recorded at 30, and 50 days after seeding based on the dry weight. Soil oxidation-reduction potential was recorded -200~-400 mV after treatment 2 days. Weed control efficacy of at 75 L, and 100 L per $m^{-2}$ was observed 92%, 84% in 2% ETOH, respectively. Yields of foxtail millet at 75 L, and 100 L per $m^{-2}$ were 1,570 kg $ha^{-1}$, 1,230 kg $ha^{-1}$, respectively.
딸기 등 시설후작으로 조 등 잡곡의 재배를 위해 잡초 및 토양소독을 위해 저농도 에탄올에 의한 효과는 다음과 같았다. 토양의 산화환원전위는 저농도 에탄올 처리 2일 후 -200~-400mV로 최저를 보였고, 에탄올 처리 후 토양 미생물 밀도는 처리 전에 비해 세균, 방선균은 증가하였으며, 곰팡이 밀도는 큰 변동이 없었다. 뿌리썩이선충는 50L $m^{-2}$, 100L $m^{-2}$에서 각각 97%, 98%로 방제 효과가 있었다. 잡초방제가는 75L $m^{-2}$, 100L $m^{-2}$ 처리량에서 30일 후에는 각각 96%, 98%이었으며, 50일 후에는 각각 92%, 84%이었다. 저농도 에탄올 처리량별 조의 수량은 물을 처리한 구와 처리량이 25L $m^{-2}$와 50L $m^{-2}$구에서는 수량이 없었고, 75L $m^{-2}$, 그리고 100L $m^{-2}$구에서는 각각 1,570kg $ha^{-1}$, 그리고 1,230kg $ha^{-1}$이었다.
