ISHS Acta Horticulturae 219: International Symposium on Diptera Pests in Vegetable Crops
LEAFMINERS /DIPTERA: AGROMYZIDAE/ ON VEGETABLES IN INDIANA |
| Author: | A.C. York |
| Abstract:
Despite the seriousness of agromyzid leafminer /Liriomyza spp./ problems in other regions of the United States, and in glasshouses in nearly every other state, we have seen no instance of problems in any commercial vegetable fields. After a survey of production practices and considerable discussions with growers, it is obvious that certain practices, reported in various publications as critical, are indeed in operation in Indiana vegetable fields. The factors involved are the following: direct seeding versus transplant culture; intensity of susceptible vegetable crops, i.e. continuity of fields; intensity of primary pests and subsequent frequency of insecticide applications; choice of insecticides and application efficiency /including mode of application/. In contrast to field culture, many glasshouses have severe problems with leafminers, particularly those growing chrysanthemum and tomatoes. | |
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