Water use efficiency of sorghum (Sorghum bicolor) in catenarysoils as influenced by varying rainfall.

Book Title: NA
Year Published: 2003
Month Published: NA
Author: Mandal, D. K. ; Khandare, N. C. ; Mandal, C. ; Challa, O.
Book Group Author: NA

A study was conducted during 1987-92 in catenary swell-shrink soils of Nagpur (Maharashtra, India) to identify the most suitable soil for sorghum (Sorghum bicolor cv CSH-9). The study area was in a micro-watershed with an area of 75 ha and located approximately 22 km west of Nagpur in dry sub-humid ecosystem. The geomorphic analysis of the soil catena identified six distinct geomorphic units, namely, hill top, escarpment, pediment, upper piedmont plain, lower piedmont plain and narrow valley. The studied soils were Lithic Haplustepts occurring on pediment surfaces, Typic Haplustepts (P2) on upper piedmont, Vertic Haplustepts on lower piedmont and Typic Haplusterts occurring on narrow valley. It was found that water use for shallow to deep soil varied from 247.4 to 351.4 mm for rainfed sorghum under dry sub-humid ecosystem and coefficient of actual evapotranspiration (ETa) variation was least (17.6%) for the Vertic Haplustepts soil over the years. In the normal rainfall year, ETa did not vary much but yield varied significantly among soils indicating that the ETa was not the sole contributing factor for the yield formation but soil edaphic condition played a significant role. The average water use efficiency (WUE) varied from 8.85 to 15.36 kg ha-1 mm-1. The lowest coefficient of variation and highest value of WUE were observed for P3 soil, indicating the sustainability of the Vertic Haplustepts in sorghum production in the present climatic aberration which needs preservation for profitable sorghum cultivation.

Pages: 223 - 228
URL: http:////0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=20033214174&site=ehost-live
Volume: 51
Number: 3
Journal: Journal of the Indian Society of Soil Science
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 0019-638X

crop yield, drought, drought resistance, evapotranspiration,Inceptisols, pediments, plant water relations, rain, soil types,Vertisols, water use, water use efficiency, India, Maharashtra, Sorghumbicolor, Sorghum, Poaceae, Cyperales, monocotyledons, angiosperms,Spermatophyta, plants, eukaryotes, South Asia, Asia, DevelopingCountries, Commonwealth of Nations, India, drought tolerance, rainfall,Field Crops (FF005) (New March 2000), Plant Water Relations (FF062),Plant Production (FF100), Meteorology and Climate (PP500), EnvironmentalTolerance of Plants (FF900)

Source: EBSCO
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