고추 재배 포장 라이시메타를 이용한 dimethomorph의 유출 평가
To investigate runoff losses of dimethomorph from the field by rainfall, the influence of slope degree and slope length on runoff rate of dimethomorph from the pepper field were measured. The WP type formulation was applied at the pepper field lysimeter in 2004 and 2005. The dimethomorph washed down...
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Veröffentlicht in: | 농약과학회지 2017, 21(3), , pp.289-297 |
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Zusammenfassung: | To investigate runoff losses of dimethomorph from the field by rainfall, the influence of slope degree and slope length on runoff rate of dimethomorph from the pepper field were measured. The WP type formulation was applied at the pepper field lysimeter in 2004 and 2005. The dimethomorph washed down from plant was ca. 37% of what applied. Concentrations of dimethomorph in the first runoff were less than $70{\mu}g\;L^{-1}$. Runoff losses were from 0.16% to 3.62% for 10% slope-plots, from 0.35% to 0.89% for 20% slope-plots, and from 0.53% to 3.29% for 30% slope-plots, and they were decreased with increasing slope-length. Runoff loss of dimethomorph was closely related to volume of runoff, but it was reduced by ridge and mulching. 작물재배 관행과 지형에 의한 농약의 유실양상의 차이를 파악하고자 고추재배 경사지 포장에서 농약유출 실험을 수행하였다. Dimethomorph 25% 수화제를 2004년과 2005년에 살포한 후 작물체를 씻어 내리는 빗물과 유출수 중 dimethomorph의 잔류 양상을 추적하였다. 농약살포 후 작물체 표면에 부착되었던 dimethomorph가 빗물에 씻겨 내리는 정도는 살포량의 37% 수준이었다. Dimethomorph의 첫 번째 유출농도는 $70{\mu}g\;L^{-1}$ 미만이었고, 10% 경사구의 유출률은 0.16~3.62%, 20% 경사구의 유출률은 0.35~0.89%, 30% 경사구의 유출률은 0.53~3.29%로 경사장의 증가에 따라 줄어들었다. Dimethomorph의 유출률은 유출수량과 관계가 밀접하고, 단위면적당 유출수량은 이동거리의 증가와 두둑과 멀칭효과에 의해 감소하였다. |
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ISSN: | 1226-6183 2287-2051 |
DOI: | 10.7585/kjps.2017.21.3.289 |