Methyl bromide fumigation for quarantine control of codling moth (Lepidoptera: Tortricidae) on nectarines
A methyl bromide (MB) fumigation of 48 g/m3 for 2 h at 21 centrigrades or above was developed for control of codling moth (CM), Cydia pomonella (L.), on six early to midseason nectarine, Prunus persica (L.) Batsch var. nucipersica Schneid, cultivars, including "May Grand", "Firebrite", "Red Diamond", "Spring Red", "Summer Grand", and "Fantasia". The fumigation treatment was based on mortality data from 24-h-old eggs, the CM life stage least susceptible to MB that may infest to midseason fresh, packed nectarines. No differences in egg susceptibility to MB were found among five infested nectarine cultivars. MB was more toxic to CM eggs on "Summer Grand". Doses (39.0-40.0 g/m3) and concentration times time (CT) products required to cause 100 per cent CM egg mortality were determined. Large-scale tests of the proposed MB fumigation quarantine treatment caused 100 por ciento mortality of 6,187 CM eggs
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| Format: | biblioteca |
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| Subjects: | CONTROL DE PLAGAS, PRUNUS PERSICA, NECTARINA, CYDIA POMONELLA, INSECTOS DEPREDADORES DE LOS FRUTOS, TORTRICIDAE, FUMIGACION, BROMURO DE METILO, DOSIS DE APLICACION, CUARENTENA, CALIFORNIA, |
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| Summary: | A methyl bromide (MB) fumigation of 48 g/m3 for 2 h at 21 centrigrades or above was developed for control of codling moth (CM), Cydia pomonella (L.), on six early to midseason nectarine, Prunus persica (L.) Batsch var. nucipersica Schneid, cultivars, including "May Grand", "Firebrite", "Red Diamond", "Spring Red", "Summer Grand", and "Fantasia". The fumigation treatment was based on mortality data from 24-h-old eggs, the CM life stage least susceptible to MB that may infest to midseason fresh, packed nectarines. No differences in egg susceptibility to MB were found among five infested nectarine cultivars. MB was more toxic to CM eggs on "Summer Grand". Doses (39.0-40.0 g/m3) and concentration times time (CT) products required to cause 100 per cent CM egg mortality were determined. Large-scale tests of the proposed MB fumigation quarantine treatment caused 100 por ciento mortality of 6,187 CM eggs |
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