Effect on water use efficiency and water-saving by controlled root-divided alternative irrigation.

Book Title: NA
Year Published: 1998
Month Published: NA
Author: Liang, ZongSou ; Kang, ShaoZhong ; Zhang, JianHua ; Gao,JunFeng
Book Group Author: NA
Abstract:

An experiment on controlled roots-divided alternative irrigation (CRAI) in maize showed that controlled 1/2 root region alternative irrigation saved 34.4-36.8% water, reducing biomass by only 6.2-12%, when the lower water retention limit was 55-65%. The difference in leaf area, leaf amount and water content were not significant between 1/2 CRAI and the control. Water use efficiency of 1/2 CRAI was higher than that of 1/2 root-divided continuous irrigation. Dry root weight, root-shoot ratio and basal diameter of stems increased and roots were distributed evenly by alternative irrigation, but 1/2 root divided continuous irrigation did not have such an effect. It was concluded that CRAI is a better system in terms of water conservation.

Pages: 88 - 90
URL: http://0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=19991905616&site=ehost-live
Volume: 31
Number: 5
Journal: Scientia Agricultura Sinica
Journal ISO: NA
Organization: NA
Publisher: NA
ISBN: NA
ISSN: 0578-1752
DOI: NA
Keywords:

biomass, irrigation systems, leaf area, maize, root shootratio, water conservation, water content, water use efficiency, Zeamays, Zea, Poaceae, Cyperales, monocotyledons, angiosperms,Spermatophyta, plants, eukaryotes, corn, Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Plant Water Relations (FF062), Erosion; Soil andWater Conservation (PP400)

Source: EBSCO
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