Effect of organic and inorganic sources of nutrients on soil macronutrient status of garden pea (Pisum sativum L.)

Abstract

An experiment was conducted to examine the response of four different organic manures viz. farmyard manure, vermicompost, castor cake and poultry manure as a source of nitrogen with or without chemical fertilizers, phosphorus and potassium and biofertilizer i.e. PSB in a Randomized Block Design with three replications during the rabi season of the year 2012 and 2013. The results revealed that, the significantly maximum available nitrogen after crop harvesting (216.84 kg/ha) was recorded with T2 (Farm yard manure 15 t/ha + Recommended dose of NPK) in pooled data. The maximum available phosphorus after crop harvesting (39.75 kg/ha and 38.19 kg/ha) was recorded with T15 (Recommended dose of N as vermicompost + P and K + PSB) during the year 2013 and in pooled data, respectively. Whereas, maximum available potassium after crop harvesting (192.38 kg/ha) was recorded with T2 (Farm yard manure 15 t/ha + Recommended dose of NPK) in pooled data. Maximum increase in available nitrogen (6.55 %) in soil was noted with T6 (Recommended dose of N as poultry manure). The significantly maximum increase in available phosphorus (9.17 %) in soil was recorded with T17 (Recommended dose of N as Castor Cake + P and K + PSB) during the year 2012, whereas, (12.61 % and 10.42 %) was noted with T18 (Recommended dose of N as poultry manure + P and K + PSB) during the year 2013 and in pooled data, respectively.