EFFECT OF WATER SOLUBLE FERTILIZERS ON GROWTH AND YIELD OF DRIP IRRIGATED AEROBIC RICE

GURURAJ KOMBALI¹*, NAGARAJU², T. SHESHADRI³, M.N. THIMMEGOWDA⁴, G.B. MALLIKARJUNA^5
1Department of Agronomy, University of Agricultural Sciences, GKVK, Bengaluru, 560065, India
²Department of Agronomy, University of Agricultural Sciences, GKVK, Bengaluru, 560065, India
³Department of Agronomy, University of Agricultural Sciences, GKVK, Bengaluru, 560065, India
⁴Department of Agronomy, University of Agricultural Sciences, GKVK, Bengaluru, 560065, India
⁵Department of Agricultural Statistics, University of Agricultural Sciences, GKVK, Bengaluru, 560065, India
* Corresponding Author : rajck.kakol@gmail.com

Received : 09-03-2017     Accepted : 14-03-2017     Published : 30-03-2017
Volume : 9     Issue : 15       Pages : 4101 - 4103
Int J Agr Sci 9.15 (2017):4101-4103

Keywords : Aerobic rice, Drip Irrigation, Water Soluble Fertilizers, Water productivity
Academic Editor : Basavaraj Patil
Conflict of Interest : None declared
Acknowledgements/Funding : Author is thankful to RKVY project on ‘Enhancing water productivity in command areas of Karnataka’, Directorate of research, UAS, GKVK, Bengaluru for providing financial support to conduct this experiment
Author Contribution : Gururaj Kombali: Researcher in the Department of Agronomy, UAS, GKVK, Bengaluru

Experiment was laid out to know the effect of water soluble fertilizers on drip irrigated aerobic rice at Zonal Agricultural Research Station, Bengaluru during Kharif 2012. Drip fertigation at 1.5 PE up to maturity with 100 % RDF through WSF registered significantly higher plant height (53.6 cm), leaf area (3529 cm2), total dry matter (118.4 g hill-1), productive tillers (27.77 hill-1), panicle weight (4.23 g) total grains panicle-1 (170.80) which resulted in higher grain yield (6598 kg ha-1) and accounted 90.3 % increase in grain yield over surface irrigation with 100 % RDF. The same treatment also recorded higher water productivity of 78.2 kg-ha cm-1 by using only 844.4 mm of water. Hence, it is concluded that drip fertigation at 1.5 PE up to maturity with 100 % RDF through WSF found optimum for higher yield with reduced water use over surface irrigation.

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