Author(s):

Brajesh Kumar, Sudipta Tripathi and Abhijeet Sharma

Abstract: During first green revolution era a static or declining trend of crop productivity has been observed in Indo-Gangetic Plain especially after 1990s due to sole dependence on chemical fertilizers. The integrated use of chemical fertilizers with organics can help in sustainable and environmentally sound nutrient management of soils. A field experiment was conducted in the Krishi Vigyan Kendra, Jamui, Bihar during 2014-15 and 2015-16 with rice (cv. Rajendra mahsoori-1) as <em>kharif</em> crop and wheat (cv. PBW-502) as a <em>rabi</em> crop to investigate the influence of integrated nutrient management on soil health and yield of crops in rice-wheat cropping system. The experiment comprised of nine treatments, each replicated five times with a plot size of 20 m²in randomized block design. Soil samples were collected and analyzed for physical, chemical and biological properties before and after the crop harvest. Based on pooled data<em>, </em>the highest grain yield (44.69 q/ha) in wheat and (49.80 q/ha) in rice were recorded in the T8 treatment. The lowest grain yield was recorded in T9 treatment. The treatments received organic amendments recorded higher microbial biomass carbon, basal soil respiration and fluorescein diacetate hydrolyzing activity over the treatments received chemical fertilizers in both rice and wheat crop. The T₈ treatment recommended for higher productivity and good soil health in rice-wheat cropping system in southern east Bihar.

Pages: 441-445  |  1102 Views  309 Downloads

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