참외의 과실비대기 집중호우에 따른 품질 및 수량과의 관계를 구명코자 착과후 20일경 농업용수를 이용하여 참외 재배이랑 표면으로부터 20cm가 될 때까지 흙탕물을 조성한 후 4, 10 15시간 담수구와 무담수구로 나누어 비교한 결과, 처리 7일 후 과육부의 당도는 무담수구의 12.6Brix에 비하여 5, 10, 15시간 담수처리구에서 4.7∼5.6Brix 정도 현저하게 낮았다. 과육의 경도는 처리 7일 후의 조사에서는 무담수구와 5시간 담수구간에는 큰 차이가 없었으나 10, 15시간 담수처리구에서는 현저히 낮았으며, 처리 13일 후의 조사에서는 담수시간과 관계없이 담수처리에서 과실의 경우가 매우 낮았다. 과일의 부패과율은 처리7일 후의조사에서는 처리간은 차이가 없었으나 처리 13일 후의 조사에서는 담수시간이 길수록 부패과율이 높았다. 무담수구에 비하여 담수구에서 노균병과 흰가루병 발생은 증가하였고 작은각시들명나방은 감소하였는데, 담수시간이 길수록 이러한 경향이 뚜렷하였다. 10a당 상품수량은 무담수구의 616.2kg에 비하여 5, 10, 15시간 담수처리에서 각각 33%, 45%, 66% 감소하였다.

This experiment was carried out to investigate the influence of flooding on the quality and yield of an oriental melon. Waterlogging for four periods, 0(not flooded), 5, 10 or 15h, were applied to 30cm depth from the soil surface. The soluble solids content of fruit flesh measured at 7 days after waterlogging was 12.6 Brix in not-flooded plot, but it decreased by 4.7-5.6 Brix in plots flooded 5, 10 or 15h, respectively. Difference in fruit hardness between the no-flooded and 5h-flooded plots was not observed, while a significant decrease in fruit hardness was observed in 10 or 15 h-flooded plots at 7 days after waterlogging. Decrease in fruit hardness in all plots except control plot was observed at 13 days after waterlogging. The percent decayed fruits at 7 days after waterlogging was not observed, but at 13 days after waterlogging it gradually increased as duration of flooding increased. The incidence of downy or powdery mildews increased is significantly in plots flooded for 5, 10 or 15h as compared to the not-flooded control. However, population of cotton caterpillar decreased in the flooded plots. Marketable fruits yield per 10a was 616.2kg in no-flooded plot, but it decreased by 33%, 45% and 66%, respectively, in plots flooded for 5, 10 or 15h. The waterlogging during fruit enlargement stage significantly deteriorated fruit quality and decreased marketable fruit yield.

• 신용섭
• 연일권
• 최진국
• 최성국
• 최부술