Assessment of moisture stress using water requirement satisfaction index in kharif maize.

Book Title: NA
Year Published: 2008
Month Published: NA
Author: Jayasree, G. ; Lingaiah, D. ; Reddy, D. R. ; Rao, S. B.S. N.
Book Group Author: NA
Abstract:

A field experiment was conducted to study the impact of moisture stress at different growth phases of maize using the water requirement satisfaction index (WRSI) during kharif 2004 in Rajendranagar, Andhra Pradesh, India. There were 4 dates of sowing, starting from the onset of monsoon at 15 days interval, and 4 'irrigation schedules', i.e. irrigation as per water requirement, skipping of irrigation at vegetative, flowering stages and rainfed. Reduced yields were recorded when the irrigation was withdrawn during the reproductive phase. A significant positive correlation between the WRSI and yield was observed (r=0.79). Higher water use efficiency was observed with skipping of irrigation at vegetative stage and in rainfed treatments.

Pages: 118 - 122
URL: http://0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=20093009324&site=ehost-live
Volume: 10
Number: 2
Journal: Journal of Agrometeorology
Journal ISO: NA
Organization: NA
Publisher: NA
ISBN: NA
ISSN: 0972-1665
DOI: NA
Keywords:

correlation analysis, crop growth stage, crop yield, maize,plant water relations, sowing date, water requirements, water stress,water use efficiency, yield losses, Andhra Pradesh, India, Zea mays,India, South Asia, Asia, Developing Countries, Commonwealth of Nations,Zea, Poaceae, Cyperales, monocotyledons, angiosperms, Spermatophyta,plants, eukaryotes, corn, Field Crops (FF005) (New March 2000), PlantWater Relations (FF062), Plant Production (FF100), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management]

Source: EBSCO
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