Vol. 3 (3) : May-June 2012 issue
Green Farming Vol. 3 (3) : 311-314 (May-June, 2012)
Effect of integrated nutrient management practices on distribution of nitrogen fractions and nitrogen use efficiency by maize crop in soil
V.M. SHILPASHREEa1, H.M. CHIDANANDAPPAb2, R. JAYAPRAKASHc3* and B.C. PUNITHAd4
aNational Bureau of Soil Survey and Land Use Planning (ICAR), Hebbal, Bangalore - 560 024 (K.K.)
bDeptt. of Soil Science and Agricultural Chemistry, College of Agriculture, Shimoga, Navile - 577 204 (K.K.)
cDept of Soil Science & Agricultural Chemistry, College of Agriculture, Dharwad, UAS, Dharwad - 580 005 (K.K.)
dKrishi Vigyan Kendra, College of Fisheries, (K. Veter. Ani. & Fishery Scien. Univ.) Mangalore - 575 002 (Karnataka)
Designation : 1Senior Research Fellow, 2Professor, 3Ph.D. Student *(jjayaprakashr@gmail.com), 4Subject Matter Specialist
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
Paper No. : P-0242
Total Pages : 4
Received : 25 April 2012
Revised accepted : 23 May 2012
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Citation :
V.M. SHILPASHREE, H.M. CHIDANANDAPPA, R. JAYAPRAKASH and B.C. PUNITHA. 2012. Effect of integrated nutrient management practices on distribution of nitrogen fractions and nitrogen use efficiency by maize crop in soil. Green Farming Vol. 3 (3) : 311-314 ; May-June, 2012
ABSTRACT
A field study was carried out at College of Agriculture, Navile, Shimoga during kharif 2009 to study the effect of integrated nutrient management practices on distribution of nitrogen fractions in soil. There were two levels of nitrogen applied through organics (FYM and vermicompost) and in-organics involving nine treatments combinations were tried in a RCBD with three replications. Significantly lower available nitrogen status was recorded in the treatments which received nitrogen only through fertilizers and without any organic matter application (196.00-200.50 kg ha-1) including absolute control compared to all other treatments (238.00-243.60 kg ha-1). Except inorganic nitrogen fractions, organic nitrogen fractions were recorded high in integrated treatments compared to the treatment which received nitrogen only in the form of fertilizers. . An agronomic nitrogen use efficiency was found highest (73.00) in the treatments involving package of practices compared to other treatments. However, nitrogen use efficiency was found to be more at lower level of nitrogen application and also in the integrated treatments compared to the treatments which received only NPK fertilizers.
Key words :
Integrated nutrient management, inorganics, maize, organic matter.
