Vol. 6 (6) : November-December 2015 issue
Green Farming Vol. 6 (6) : 1350-1352 ; November-December, 2015
Effect of different source & rate of fertilizer application through drip irrigation on yield & nutrient budgeting in aerobic rice
REKHA B.1*, H.M. JAYADEVA2, GURURAJ KOMBALI3, GEETHA KUMARI A.4 and C.M. MUNIRATNA5
Department of Agronomy, University of Agricultural Sciences, GKVK, Bangalore - 560 065 (Karnataka)
Designation : 1,3,4,5Ph.D. Scholar *(mbrekhamb@gmail.com, 2Professor
Subject : Agronomy and Crop Production
Paper No. : P-3853
Total Pages : 3
Received : 25 June 2015
Revised accepted : 04 November 2015
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Citation :
REKHA B., H.M. JAYADEVA, GURURAJ KOMBALI, GEETHA KUMARI A. and C.M. MUNIRATNA. 2015. Effect of different source & rate of fertilizer application through drip irrigation on yield & nutrient budgeting in aerobic rice. Green Farming Vol. 6 (6) : 1350-1352 ; November-December, 2015
ABSTRACT
Fertigation allows precise timing and uniform distribution of applied nutrients to meet the crop nutrient demand which ensures substantial saving in fertilizer usage. In this study the effect of different source and rate of fertilizer application through drip irrigation system were evaluated on yield, removal of nutrients by crop, expected balance, actual balance and net loss or gain nutrient were studied on sandy loamy soil, during kharif 2013 at Zonal Agricultural Research Station, University of Agricultural Sciences, Gandhi Krishi Vignana Kendra, the experiment was laid out in a Randomized Complete Block Design comprising of 3 replications and 10 treatments. Application of 100 per cent RDF through drip fertigation with water soluble fertilizer recorded grain and straw yield of 6503 and 9285 kg ha-1, respectively and maximum loss of nitrogen was noticed in soil application of 100 per cent RDF through surface irrigation (44 kg ha-1). The loss of phosphorous varied between 3.55 to 6.69 kg ha-1 in different treatments. The gain of potassium varied between 44.77 to 68.74 kg ha-1 in different treatments.
Key words :
Aerobic rice, Fertigation, Nutrient uptake, Nutrient balance.