Effect of integrated nutrient management practices on yield, nutrient uptake and economics of mustard (Brassica juncea L.) grown in the rice-mustard cropping system

YESH PAL, R.P. SINGH, R.S.SACHAN¹ and P C PANDEY

Department of Agronomy, ¹Department of  Soil Science,

College of Agriculture,

G. B. Pant University of Agriculture and Technology,

Pantnagar-263 145 (U.S. Nagar, Uttarakhand)

ABSTRACT

A field experiment was carried out during 2002-03 and 2003-04 to assess the extent of reductions in yield due to application of inorganic fertilizers below the recommended level and also the benefits in yield due to integrated nutrient management (INM) in mustard (Brassica juncea L.) variety Kranti. The NPK levels applied were @ 100%, 75% and 50% of recommended fertilizer (RF) through inorganic fertilizers alone and in combination. Significant reduction in yield and yield contributing parameters like number of branches, number of siliquae and plant height was recorded with reduction in fertility levels during both the years. Similar trend was recorded in uptake of N, P, K, S, Zn and B nutrients. Significantly highest values of plant height, number of branches, number of siliquae, and seed and oil yield were recorded with T₆  where complete INM package was applied along with 100 per cent of RF followed by T₁₂ and T₁₈ where the same INM package was applied along with 75 and 50% of RF level. Significantly higher uptake values of N, P, K, S, Zn, and B were also recorded in these treatments.