Impact of Vermicompost on Soil Fertility and Crop Productivity of Mulberry
Ключові слова:
pruning, decomposition, powdery mildew, leaf spot, leaf rust, tukraАнотація
Vermi-compost amendments in soil had a positive impact on soil physio-chemical properties, leaf yield & quality as well as suppresses of foliar diseases in mulberry plant. A two years’ field experiment was conducted in the experiment field at Bangladesh Sericulture Research and Training Institute (BSTRI), Rajshahi, Bangladesh to examine the effect of vermi-compost on soil properties, growth, leaf yield and quality as well as severity of foliar diseases of mulberry plant. This study consisted of 4 treatments: T0 = control, T1 = basal dose of N300P150K100 kg/ha/year, T2 = only 5 MT vermicompost/ha/year and T3 = 5 MT vermi-compost/ha/year + basal dose of N300P150K100 kg/ha/year. Results showed that the combined application of 5 MT vermicompost/ha/year + BSRTI recommend basal dose of N300P150K100 kg/ha/year exposed better growth, leaf yield and quality of mulberry plant followed by T2, T1 and T0 treatments respectively. Between the two cropping years the maximum leaf yield was 50.40 MT/ha/year in 2nd year crop which was 73.25% greater than the maximum leaf yield of control. The leaf quality viz: moisture (%), soluble carbohydrate (%), total chlorophyll (mg/g), crude protein (%), mineral (%) and total sugar (%) were also 8.59, 34.27, 31.75, 23.32, 31.45 and 38.29 percentage respectively greater in 2nd year for the same fertilizer management over the control treatment. Furthermore, the soil physio-chemical properties viz: OC, N, P, K, Ca, Mg, Na, Mn, Cu and Zn except soil pH content were increased in 2nd year than the 1st year soil with maximum suppress of foliar diseases viz: leaf spot, powdery mildew, tukra and leaf rust in 2nd year for the treatment of T3. This study concluded that utilization of vermi-compost improves soil fertility, leaf productivity, leaf quality of mulberry plant and reduce the foliar diseases with the respect to cropping year.
