• 농약과학회지
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• 제16권4호
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• pp.364-368
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• 2012

미생물제제의 토마토의 병 발생에 미치는 영향을 조사하고자 2010~2011년에 걸쳐 공주의 친환경 토마토 재배농가에서 현장실증시험을 수행하였다. 친환경 미생물제제로 시판되는 EXTN-1 액상수화제 등 2종의 미생물제제와 농과원에서 개발 중인 2종의 미생물을 토마토 정식시 점적관수 및 뿌리 관주처리와 착화 초기 4회 경엽처리한 후 생육과 병 발생 정도를 조사하였다. 2010년에는 잿빛곰팡이병에 대해 정식 3주 후 1주일 간격으로 EXTN-1 액상 수화제와 씰러스 액상수화제를 4회 처리한 경우 방제가가 59.6%, 50.5%로 가장 높았으며, 정식 4주 후 1주일 간격으로 EXTN-1 액상수화제를 3회 처리한 경우의 방제가는 55.4%였지만 모든 처리구에서 흰가루병에 대한 효과는 저조하였다. 2011년에는 잿빛곰팡이병에 대해 EXTN-1과 Bacillus subtilis strain B17을 정식시 점적관수와 2주 간격 관주처리 2회 및 착화 초부터 경엽처리 4회를 한 결과 방제가가 57.0%와 55.1%로 가장 높았으며, 흰가루병에 대해서는 EXTN-1과 Bacillus subtilis strain B4 및 B17을 잿빛곰팡이병의 경우와 동일하게 처리한 경우 방제가가 50.5, 51.3, 52.5%로 가장 높았다.

• 인간식물환경학회지
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• 제24권6호
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• pp.609-617
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• 2021

Background and objective: The nanobubbles remain stable in water, and it increased dissolved oxygen (DO) in the water that promotes the seed germination and the plant growth. We evaluated the seed germination and growth of sprouts (radish, wheat, and barley) and leafy vegetables (red mustard and pak choi) when irrigated with various DO of nanobubble water (NB). Methods: The oxygen NB was generated by surface friction and treated in 4 levels: NB 0% (control, DO 9.21 mg·L^-1), NB 20% (DO 15.40 mg·L^-1), NB 33% (DO 20.93 mg·L^-1), and NB 100% (DO 39.29 mg·L^-1). Results: The root length of radish and wheat increased more in NB 33% than the control plot. The fresh weight increased in NB 33% compared to the control plot in radish and wheat, and both fresh and dry weight increased more in NB 20%, NB 33%, and NB 100% than the control plot of barley. The leaf length and width of red mustard decreased more in NB 33% and NB 100% than the control plot and NB 20%, which indicated the leaf compactness. The fresh and dry weight of shoot and root increased more in NB 100% than the control plot in red mustard. In pak choi, the shoot fresh weight increased more in NB 100% than the control plot. In leafy vegetables, the germination rate of red mustard in NB 100% was higher than the control plot, however, it was not significantly different between oxygen NB plots in sprout vegetables. Conclusion: The results showed that the root growth and biomass increased after applying NB 33% in sprout vegetables. The leaf growth properties as the number of leaves and leaf size were not significantly different or decreased in NB treatments compared to control plots, but NB 100% (DO 39.29 mg·L^-1) effectively increased the root growth and plant biomass in leafy vegetables.