Effect of different moisture regimes on yield potential of onion (Allium cepa L.) under micro-sprinkler irrigation system.

Book Title: NA
Year Published: 2005
Month Published: NA
Author: Kadam, U. S. ; Gorantiwar, S. D. ; Kadam, S. A. ; Gurav,G. B. ; Patil, H. M.
Book Group Author: NA

A field experiment was conducted at the Instructional Farm of the Department of Irrigation and Drainage Engineering in Rahuri, Maharashtra, India, to investigate the effect of different soil moisture regimes on yield potential of onion (Allium cepa) under micro-sprinkler irrigation system. Results revealed that the irrigation treatment scheduled at 20% of available moisture depletion level was found superior and statistically significant. Highest yield of 494.37 q/ha and water use efficiency (WUE) of 961.82 kg/ha-cm were recorded in this treatment. The water requirements and WUE were found decreased with increased percentage of moisture depletion levels. Thus for maximum bulb yield and WUE, onion crop must be irrigated at 20% depletion level of available soil moisture. In clayey type of soil on an average 26 irrigation be scheduled at an interval of 4 to 5 days with an average depth of 19.5 mm preferably by micro-sprinkler method of irrigation. Water requirement of onion crop at 20% depletion level was worked out as 514.00 mm.

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ISSN: 8179060993

clay soils, crop yield, evapotranspiration, irrigationscheduling, irrigation systems, microirrigation, onions, plant waterrelations, soil types, soil water regimes, sprinkler irrigation, waterrequirements, water use efficiency, India, Maharashtra, Allium, Alliumcepa, Allium, Alliaceae, Liliaceae, Liliales, monocotyledons,angiosperms, Spermatophyta, plants, eukaryotes, South Asia, Asia,Developing Countries, Commonwealth of Nations, India, spray irrigation,Horticultural Crops (FF003) (New March 2000), Plant Water Relations(FF062), Plant Production (FF100), Soil Physics (JJ300), Soil WaterManagement (Irrigation and Drainage) (JJ800) (Revised June 2002)[formerly Soil Water Management]

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