Bio-Economic Changes Due to Long Time Treatment of Carbenda-zim on Mulberry Silkworm (Bombyx mori L.)


1 Dept. of Sericulture, Faculty of Natural Resources, University of Guilan, Somehe Sara 1144,

2 Iran Sericultural Research Center (ISRC), Pasikhan, Rasht,


The effect of fungicides on silkworm larvae was analyzed with regard to the fact that these beneficial insects are usually affected by fungicides, Daily feeding on 1 and 2g/liter of carbendazim, a systemic fungicide, did not have significant effects on larval and pupal mortality. However the weight of the treated larvae showed considerable weight decrease up to 37% weight.. All the economic traits of male and female adults treated with fungicide decreased but this decrease is not significant in cocoon shell weight and hatching percentage. The comparison of means using Tukey test at 5% confidence level did not show any effect related to the concentration