녹두 播種期別 갈색무늬병(Cercospora canescence)의 發生이 生育·收量에 미치는 影響 = Effect of Cercospora Leaf Spot(cercospora canescence) development on the Growth, Yield Components at Different Planting Dates in Mungbean

다국어 초록 (Multilingual Abstract)

Effect of planting dates on the growth and yield components associated with cercospora leaf sport(CLS) of mungbean was investigated to find out optimum planting date for th disease escape to minimize yield reduction by the CLS infection. Delay of planting date from May 1 to May 20, June 10 and June 30 shortened emergence day by 1-6 days and flowering day by 5-20 days with varietal difference. Delay of planting date reduced number of pods per plant significantly. While, number of seeds per pod and 100-seed weight were less affected by delay of planting date and the influence was much less in the variety R-105569 than S-103993 and M-109575. Severity of CLS was increased with delay of planting date until June 10 in S-103993 and M-109575 and May 20 in R-105569. Yield reduction was significantly correlated with CLS severity in susceptible variety S-103993 and intermediate M-109575, but insignificantly correlated in resistant R-105569. Yield decreased significantly in CLS susceptible S-1003993 and intermediate M-109575 by delaying the planting date, owing to reduction of number of pods per plant which is associated with increase in CLS infection, but the reduction was small in the resistant R-105569.