Effect of nitrogen levels and biofertilizers on productivity, nutrient content and uptake under pearl millet-wheat cropping system.

摘要

A field experiment was conducted in Haryana, India during kharif and rabi seasons of 2003 and 2004 to study the effect of combinations of varying levels of nitrogen (100% recommended dose of nitrogen (RDN), 75 and 125% of RDN) and biofertilizers (Azotobacter sp.; Azospirillum sp.; phosphate solubilizing bacteria, PSB; and their mixed inoculation, Biomix) on productivity and N, P and K uptake of pearl millet (Pennisetum glaucum cv. HHB-94) and wheat (Triticum aestivum cv. PBW 343) crops. Application of 125% RDN being at par with 100% RDN + biomix recorded higher grain and stover yield and nutrient contents and uptake in pearl millet. The results revealed that 75 and 100% RDN either with PSB, Azospirillum or biomix increased grain and stover yield over absolute control, 75 and 100% RDN alone. Favourable effects of these treatments were also recorded on grain and straw yield and N, P and K contents and uptake of wheat grown in sequence.