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Studies on biological control ontrol of the white spotted longicorn beetle, Anoplophora malasiaca, by an entomogenous fungus, Beauveria brongniartii. N . Field evaluation of hanging polyurethane foam sheet containing B. brongniartii conidia, on citrus trees for the control of adult beetle.

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Effect of the entomogenous nematode, Steinernema carpocapsae, on controlling the turnip moth larvae, Agrotis segetum, was examined on the pots and fields growing carrot plants. In the pot tests, ground spray of third stage juveniles (J3) of the nematode with the density of 5 •~ 105 and 106 in 1.5ƒÇ of water per square meter caused the mortality of 66.7% and 80.0% respectively, in the A. segetum larvae, and injury of carrot plants was reduced to half or less of that in the unsprayed pots. In the field test, a similar effect was observed with one application of 106 J3/m2 or two applications of 5•~105 J3/m2 with an 8-day interval, or application of 3g of 0.1 a.i. permethrin granule/m2. These results demonstrate that S. carpocapsae is a useful agent for the biological control of A. segetum larvae in carrot fields.

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