Biological Control of Aphids on Cucumber in Plastic Green Houses Using Banker Plants
2003
Kim, Y.H.Kim, J.H. (National Institute of Agricultural Science and Technology, RDA, Republic of Korea)
Biological control of aphids using " banker-plants with the parasitoiid, Aphidius colemani Viereck(BPAC)" was carried out on cucumber in greenhouse. The BPAC consisting of barley seedling infested with Schizaphis graminum enhanced the early establishment of Aphidius colemani in the greenhouse and prolonged the control of Aphis gossypoo on May 8, 2001. The BPAC was placed in the greenhouse at transplanting at the rate of 1 per 30m©÷ of cucumber. Although good control effect was gained until early August after placing banker plants on May 9. the effect after then because of high temperature. The aphid population on cucumber in control plots reached to a peak on June 26, and decreased because of entomopathogenic fungus for rainy season of July, and increased again to a very high population on August.
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