بررسی مقایسه روشهای مبارزه شیمیایی و میکروبی و هورمونی علیه ملخ کوهان دار تاغ در استان اصفهان

Dericorys albidula is one of the important pests on saxsaul plantations of Zavareh-Ardestan .Its yearly outbreak requires chemical control, which have been carried out so far using fenitrothion. During the period of 1993 to 1994 an experiment was carried out to evaluate the effect of fenitrothion 50% EC, two formulation of diflobanzuron (Dimilin 25% WP and Dimiljn 45% ODC) and teflubenzorun against the pest. A completely randomized block design with 4 replication was used. This trial included two steps, first against 1 St, 2nd, and 3rd nymphal instars (first group) and the second against 4th and 5th nymphal instars (second group) of the pest. Samples were taken 3,7 and 15 days following spraying and the means were analyzed based on Dancan test. Mortality rates obtained over 2 years experiment indicate no significant difference (5% level) between 2 fornmlations of (diflubebzuron) on first and second nymphal groups. Mortality rates of first group 15 days after spraying with dimWn 2WP, dimilin EC, nomoit and fenitrothion were 23, 70, 61, 100% in the first year and 28,68,60, 100% for second year .The figures were for the second group were 23, 58, 46, 98% in first year.

Keywords:

تاغ , ملخ کوهان دار , مبارزه شیمیایی , مبارزه میکروبی , مبارزه هورمونی , اصفهان (استان) , فنیتروتیون , سومیتیون , دیمیلین روغنی , دیمیلین پودری , دیفلوبنزرون , نومولت