the effect of spirodiclofen sc 240 on citrus rust mite (phyllocoptruta oleivora (ashmead))

Authors

مسعود اربابی

دانشیار پژوهش بخش تحقیقات جانورشناسی کشاورزی، مؤسسه تحقیقات آفات و بیماری های گیاهی، تهران - ‏ایران صائب ‏جوادی

مربی پژوهش، آزمایشگاه تحقیقات آفات و بیماری های گیاهی خشکه داران تنکابن، مازندران - ایران‏ محمد ابراهیم جعفری

استادیار پژوهش مرکز تحقیقات کشاورزی ساری، مازندران - ایران‏

abstract

the effects of three doses of spirodiclofen sc 240 in comparison with three registered ‎acaricides on citrus rust mite in western part of mazandaran province during period of 2003-‎‎2004 studied. the bcr design was used to assign four replications of seven treatments ‎‎(spirodiclofen sc 240 at doses 0.1, 0.18 and 0.27 millilitre in 1000cc water, fenproximate, ‎pyridaben, abamectin) including an untreated check plot. twenty treated fruits from each ‎treatment and number of alive crm counted under stereo microscope, one day before and ‎three, seven, 14 and 25 days after acaricides application accordingly. the percentage of ‎mortality of immature crm population indicated that spirodiclofen of 0.27 percent had ‎maximum control. the effect of all treatments was maximum in 3rd day of the sampling, but ‎mortality rate increased with the extent of interval period. the envidor 0.27 percent due to ‎lower doses among the registered acaricides in iran and because of the higher efficiency with ‎sustainable effect can be recommended for control of crm in mazandaran province.‎

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