Effect of organic and inorganic fertilisers on yield of crops and physico - chemical properties of soil in high hills of Nilgiris [India].

摘要

A field experiment was conducted at CSWCRTI, Research Centre, Udhagamadalam, India, to study the long term effect of continuous fertilizer and manure application on crop growth and soil physico-chemical properties. Potato yields were significantly improved by applying either NPKcalc fertilizer (rate calculated from soil test data) plus 5 t FYM/ha, or a recommended dose of NPKrec fertilizer (recommended rate) plus 5 t FYM/ha or organic fertilizer in the form of vegetable mixture No.4 (6:12:6). Recommended dose of fertilizer in the form of vegetable mixture No. 5 (9:9:9) and NPKcalc fertilizer plus 5 t FYM/ha gave higher yields of radish. After five years of the study, the total N content was found to be decreasing in all the treatments except in control. Increase in P and K content was noted for sites with combined applications of NPK fertilizer and FYM.