Rescheduling irrigation for increased water use efficiency in rabi groundnut (Arachis hypogaea L.).

Book Title: NA
Year Published: 2003
Month Published: NA
Author: Kumar, B. V. M. ; Reddy, M. M.
Book Group Author: NA

A field experiment was conducted in an Alfisol during rabi season of 1996-97 at the College of Agriculture, Rajendranagar, Hyderabad, India, to study the effect of irrigation scheduling on groundnut under limited water supply. Six treatments were employed, viz., no moisture stress (T1) and moisture between 40-75 days after sowing (DAS) (T2); 30-75 DAS (T3); 85-105 DAS (T4); 105-135 DAS (T5); 20-40 DAS (T6). Moisture stress at different pheno phases showed no significant difference in biomass production 120 DAS, but affected the assimilate partition to pod. Under stress-free environment during crop growth period, last 25-30 days growth period, prior to maturity no dry matter accumulation took place either by giving three irrigations (T1) or without any irrigation (T5). Even prolonged moisture stress of 45 days coinciding pre-flowering to seed initiation (30-75 DAS) did not affect the ultimate dry matter production. The pod yield was highest in T6 (2002 kg ha-1) which was on par with T1 (1971 kg ha-1), while T5 resulted to a significantly lower pod yield (1770 kg ha-1). Irrigations at sowing, 10, 40, 60, 70, 80, 90, 105 and 115 DAS instead of 14 irrigations at 10 days interval during rabi season had similar effect on pod yield.

Pages: 113 - 117
URL: http:////,ip,url,cpid&custid=s4640792&db=lah&AN=20043045913&site=ehost-live
Volume: 18
Number: 2
Journal: Indian Journal of Dryland Agricultural Research and Development
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 0971-2062

Alfisols, biomass production, crop yield, dry matteraccumulation, groundnuts, irrigation, irrigation scheduling, plant waterrelations, pods, sandy loam soils, soil types, soil water content,sowing, sowing date, water stress, water supply, water use efficiency,India, Arachis hypogaea, Arachis, Papilionoideae, Fabaceae, Fabales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, SouthAsia, Asia, Developing Countries, Commonwealth of Nations, Hyderabad,peanuts, seed sowing, water supplies, watering, Field Crops (FF005) (NewMarch 2000), Plant Water Relations (FF062), Plant Production (FF100),Soil Physics (JJ300), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management]

Source: EBSCO
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