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ISHS Acta Horticulturae 907: VI International Symposium on Light in Horticulture

EFFECTS OF GREEN LIGHT IRRADIATION ON INDUCTION OF DISEASE RESISTANCE IN PLANTS

Authors:   R. Kudo, Y. Ishida, K. Yamamoto
Keywords:   disease resistance, fluorescent lamp, gray mold, light emitting diodes, strawberry anthracnose
DOI:   10.17660/ActaHortic.2011.907.39
Abstract:
This study was undertaken to find the possibility of utilizing artificial light as method for pest control instead of chemical control. In our study, it has already been found that green light (480-570 nm) irradiation induced disease resistance. The influence of green light irradiation on induction of disease resistance in strawberry was investigated against strawberry anthracnose (Glomerella cinglata). The results showed that only green light irradiation was effective against strawberry anthracnose. The number of lesion on the leaves had been significantly decreased by green light irradiation. And the next step, the effect of green light irradiation with green light sources against strawberry anthracnose for nursery and cultivation in field was investigated. It was found that green light irradiation also inhibited strawberry anthracnose incidence in field. Moreover, it was found that the growth of plants and the enlargement of fruits were promoted by green light irradiation. And furthermore, green light had been effective against spider mite in field.

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