Effect of integrated nutrient management on yield and uptake of nutrients in pearl millet (Pennisetun glaucum)- mustard (Brassica juncea) crop sequence

Abstract

A field experiment was conducted at Panwari Village of Agra district (U.P.) during 2015-16 and 2016-17 to evaluate the effect of integrated nutrient management in pearl millet (Pennisetum glaucum L.)- Indian mustard (Brassica juncea L) crop sequence. The experiment was laid out in randomized block design with six treatments and three replications. The results revealed that the application of 100% recommended dose of N, P and K fertilizers recorded significantly higher grain (4.10t ha-1) and stover (10.72t ha-1) yields of pearl millet over 75% NPK and control. The yield (4.02 and 0.40 t ha-1) of pearl millet obtained with 75% NPK + 10 t FYM ha-1 + Azotobacter, was at par with 100% NPK fertilizers. Application of 10t FYM ha-1 was also found to be beneficial in terms of yield of the crop over control. The protein content in pearl millet grain (10.6%) was higher under 100% NPK treatment over other treatments. Similarly, the uptake of nutrients (N, P and K) by pearl millet crop was significantly higher under 100% N, P and K fertilizers over control. The yield of succeeding mustard crop increased significantly under the treatment in which previous pearl millet crop had 10 t FYM ha-1 along with 75% NPK fertilizer and Azotobacter. Residual effect of 10t FYM ha-1 along with 75% NPK and Azotobacter produced the maximum seed and stover yield of mustard which was 15.1% higher in seed and 15.4% in stover production over 100% NPK alone, respectively. The quality of mustard seed (oil content) was significantly higher with combined use of organics and fertilizers. The uptake of nutrients by mustered crop was significantly higher under residual effect of integrated use of organic and inorganic fertilizer over other treatments.