نوع مقاله : علمی پژوهشی
نویسندگان
1 عضو هیات علمی گروه فیزیولوژی و تکنولوژی پس از برداشت پژوهشکده چای-لاهیجان- ایران
2 معاون پژوهش، فناوری و انتقال یافته های پژوهشکده چای- لاهیجان - ایران
3 پژوهشکده چای، مؤسسه تحقیقات علوم باغبانی، سازمان تحقیقات، آموزش و ترویج کشاورزی، لاهیجان، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The seed of tea plant (Camellia sinensis) has an organic compound with pesticidal activity called saponin, which is used in integrated pest management because it decomposes in a limited time and is safe for non-target organisms. The aim of this study was to investigate the effectiveness of tea seed crude saponin against the mite (Brevipalpus obovatus donnadieu). In this regard, crude saponin with concentrations of zero, one and two percent in three regions of Gilan (East, Center and West), two years (1400-1401) and in three time periods (April, June and September) in tea gardens with severe pollution was sprayed. Three days after spraying, mite-infected leaves were randomly picked from 16 bushes and mites were counted by biometric method. The statistical design of split plots based on randomized complete blocks was used. The results showed that the quadruple interaction effect (three spraying treatments × three regions × two years × three time periods) is significant at the five percent probability level. spraying with a concentration of one and two percent in all locations, two years and three time periods, reduced the mite population compared to the control treatments. The mite population in spraying treatment with 2% concentration was reduced by half compared to 1% concentration. In this research, it was found that the best treatment to reduce the population of mite in garden condition was spraying with a concentration of two percent. The results of examining the biological characteristics of mites in the best treatment showed that survival and reproduction decreased and the length of the biological period before maturity increased.
کلیدواژه‌ها [English]
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