Effect of VAM fungi and bacterial biofertilizers on mulberry leaf quality and silkworm cocoon characters under semiarid conditions

The influence of VAM fungi and bacterial biofertilizer (BBF) with ۵۰% reduction in the recommended dose of (N and P) chemical fertilizers on leaf quality traits of mulberry variety (S-۱۳) and its impact on silkworm (PM ? NB۴D۲) growth and cocoon characters were studied under semi-arid conditions. Four different treatments were imposed i.e., T۱: Control (only ۱۰۰% NPK); T۲: VAM (۵۰% cut in P); T۳: BBF (۵۰% cut in N) and T۴: BBF and VAM (۵۰% cut in N and P). The results revealed that reduction (۵۰%) in the dose of chemical fertilizers in T۲, T۳ and T۴ did not affected the leaf quality traits or cocoon parameters, this may be due to the effect of microbial inoculants in these treatments, which had efficiently regulated the normal growth, metabolism and physiological activity in plants. Among the three-biofertilizer treatments, leaf quality, silkworm growth and cocoon parameters were found improved in T۴ and was on par with T۱ control. 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کلیدواژه ها:

Biofertilizers ، S ، ۱۳ variety ، Leaf quality ، Silkworm growth ، Cocoon characters ، Semi ، arid condition