Influence of preceding crops and fertilizer application on dry matter accumulation, biomass production and uptake of N and P by mustard [Brassica juncea (L.) Coss & Czern].

摘要

In a study conducted in New Delhi, India, during the kharif and rabi seasons of 2001-02 and 2002-03, the results revealed that periodical dry matter accumulation per plant increased significantly due to preceding crops and fertilizer application and direct application of N and P. The highest biomass yield was also recorded when mustard was grown after fertilized urdbean. Total dry matter and biomass were also highest when 80 kg N+40 kg P2O5/ha was applied directly to mustard crop. On average, 80 kg N+40 kg P2O5/ha increased the yield by 46% over the control. The total N and P uptake was significantly increased by fertilizer application on preceding crops and their fertilizer application was highest in mustard crop followed by urdbean. The highest N and P uptake (143.7 kg N and 32.4 kg P2O5/ha) was recorded with 80 kg N+40 kg P2O5/ha.