Effect of organic waste and NPK fertilizer on potato yield and soil fertility

摘要

A field experiment was conducted to examine the effect of organic waste and NPK fertilizers on macro and micronutrients concentration in potato straw and on yield at Nuclear Institute of food and Agriculture Peshawar, Pakistan during 2012. Fifteen treatments of various organic and inorganic fertilizers were applied to potato crop each replicated three times. After harvesting of the crop, potato yield was recorded. For soil fertility analysis 90 soil samples from two depths (0-15 and 15-30 cm) and 45 straw samples were also collected and analyzed. Fertilizer doses showed significant effect on potato yield and soil fertility parameter. The treatments (Filter cake + full NPK) and (Municipal solid waste + full NPK) showed high yield and significant effect on NPK and micronutrients concentrations in potato straw. The lowest concentrations of micronutrients in soil and potato straw were observed mainly in treatment (PK recommended dose) and control. It can be concluded from this experiment that the conjunctive use of inorganic fertilizers with organic waste further accelerated the beneficial effect of inorganic fertilizers on soil and plants. The treatments (Filter cake + full NPK) and (MSW + full NPK) seemed to be the appropriate dose for sustainable production of potato.