Brassicas are major vegetable crops in China but the systems for growing the crops are complex. During the last
30 years, the area of vegetable crops has increased steadily, however, the control of insect pests on brassica vegetables has largely relied on the heavy use of chemical insecticides, resulting in high levels of resistance, insecticide residues hazardous to human health and other serious consequences. Nevertheless, efforts to develop
practical and sustainable integrated pest management (IPM) strategies for brassica vegetables have been implemented. Here we first review the work on surveys of natural enemies of insect pests in brassicas and describe
the biology and ecology of a few important parasitoids. We then introduce the progress of conservation biological control by reviewing studies on evaluation of natural enemies and selective insecticides, the work on the
development of action thresholds and some successful examples of IPM field trials at the cropping system level.
The successful examples of IPM practices in brassicas show the great potential of conservation biological control
to reduce chemical pesticide input and improve vegetable production in the future
brassicas ในช่วงBrassicas are major vegetable crops in China but the systems for growing the crops are complex. During the last
30 30 years, the area of vegetable crops has increased steadily, however, the control of insect pests on brassica vegetables has largely relied on the heavy use of chemical insecticides, resulting in high levels of resistance, insecticide residues hazardous to human health and other serious consequences. Nevertheless, efforts to develop
practical and sustainable integrated pest management (IPM) strategies for brassica vegetables have been implemented. Here we first review the work on surveys of natural enemies of insect pests in brassicas and describe
the biology and ecology of a few important parasitoids. We then introduce the progress of conservation biological control by reviewing studies on evaluation of natural enemies and selective insecticides, the work on the
development of action thresholds and some successful examples of IPM field trials at the cropping system level.
The successful examples of IPM practices in brassicas show the great potential of conservation biological control
to reduce chemical pesticide input and improve vegetable production in the future
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