• Korean journal of applied entomology
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• v.41 no.2
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• pp.137-143
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• 2002

Grape phylloxera, Daktulosphaira vitifoliae(Fitch), is a destructive grape insect pest because it forms root galls and kills the plant by directly destroying root system. The effects of insecticide treatments were examined to establish the chemical control system of phylloxera, and the damage by this insect was investigated in grapevine yards. The treatments of 40kg carbofuran 3GR per ha and carbosulfan 20WP of 10$\ell$ (1,000$\times$) per tree successfully reduced phylloxera densities. After the insecticide treatments in early season, the phylloxera population rebuilt up again at harvest season. In a grapevine yard where two times of carbofuran treatment (mid-May and post-harvest treatment) were applied a year from 1998 to 2000, total yield per ha in 2000 showed an increase of 30% over that of 1998. But the yield in 2000 was low 20% compared to the average standard yield of Korean grapevine yards. In a grapevine yard without chemical treatment during the same years, total yield per ha in 2000 showed 53% reduction compared to that of 1998. Also, damaged vines by phylloxera abruptly increased from 3% in 1998 to 50% in 2000.

• Agrochemical news magazine
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• v.19 no.4 s.145
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• pp.22-23
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• 1998