- Volume 4 Issue 1
The present knowledge of farmers on pests and chemical control in grapevine culture
포도농가의 병해충 인식 및 화학적 방제 실태
- Cha, Byeong-Jin (Dept. of Agricultural Biology, Chungbuk National University) ;
- Lee, Yun-Sang (Okcheon Grapes Experiment Station, Chungbuk Provincial ARES) ;
- Lee, Hyung-Rae (Dept. of Agricultural Biology, Chungbuk National University)
- Published : 2000.03.31
As the first step of a research on the establishment of control strategy for grapevine diseases and insects, the current status of pest control and yield losses by them were surveyed from grapevine growers of Korea. For insects, the most difficult to control was a grapevine stem borer and a grapevine clearwing moth was the next. On the other hand, several diseases including anthracnose, downy mildew, powdery mildew, bird's eye rot, leaf blight, were answered by the growers. The occurrence of the pests varied to the cultural practices. Yield loss was more serious in rainfall intercept culture than in plastic film house culture and diseases caused more loss in yield than insects did. However, the grapevine grower's potential for the identification of the kinds of pests was not high enough. When the pest was observed, the growers consulted mainly with local pesticide dealers or neighbouring growers and usually applied the pesticides prescribed by the dealer. More than half of the growers did not use pest control calendar, and most of the growers applied pesticides before any symptom appeared. Also, more than half of the growers applied mixture of at least more than 1 kind of pesticide and nutrients. Insecticides were applied less than 5 times during the season, but it was more than 6 times for fungicides. In the pesticide selection, the growers checked control effect first, regardless of the registration, and the pest control cost per unit area varied very much depending on the growers.