Status of available Macronutrient and Physical properties of tasar silkworm host plants growing soils of Mayurbhanj district in Odisha

摘要

In the present study, attempts have been made to evaluate the soil fertility status from different tasar sericulture practicing regions of Mayurbhanj district, Odisha. Totally, 236 surface soil samples were collected and analysed for various soil fertility parameters like pH, EC, organic matter, available nitrogen, phosphorus, potassium and sulphur. The pH (3.63 to 7.10) and EC (0.01 to 0.66 dSm -1 ) values indicated that soils were found to be very strongly acidic and non-saline in nature. Organic carbon was evenly distributed to low, medium and high category. The 99 per cent of analysed soil samples were found to be deficient in nitrogen content. Similarly, phosphorus and potassium were low in 51 and 46% of the soil samples, respectively. Deficiency of sulphur was noticed by three-fourth of the tasar regions soils in the Mayurbhanj district. Hence, to overcome the adverse effect of nutrients, complimentary use of biofertilizers, organic manures along with inorganic and balanced fertilization should be incorporated in the nutrient management programme in tasar sericulture for sustained production of quality leaf yield of host plants as well as higher tasar silk cocoon yield.