Water use efficiency and yield performance of summer cowpea under varying moisture stress situations.

Book Title: NA
Year Published: 2003
Month Published: NA
Author: Anitha, S. ; Mathew, G. ; Sreenivasan, E. ; Purushothaman, S. M.
Book Group Author: NA

Field experiments were conducted during the summer seasons of 1998-2000 in Pattambi, Kerala, India, to study the yield response of 8 cowpea cultivars (C-152, Kanakamani, Krishnamani, V-16, V-240, GC-3, V-118 and Pusa Phalguni) to irrigation schedules (IW/CPE of 0.4 (stressed) and 0.8 (no stress)) in summer rice fallows. Irrigation at 0.8 IW/CPE recorded significantly higher water use efficiency (27.10 kg ha-1 cm-1) and yield (936 kg/ha) compared to irrigation at 0.4 IW/CPE, which recorded water use efficiency of 26.94 kg ha-1 cm-1 and yield of 795 kg/ha. Kanakamani was the best cultivar, recording the highest yield of 963 kg/ha, followed by GC-3 (919 kg/ha), V-240 (867 kg/ha) and Krishnamani (863 kg/ha). These cultivars recorded water use efficiency of 30.09 (the highest), 28.71, 27.09 and 26.96 kg ha-1 cm-1, respectively.

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ISSN: 8172333420

cowpeas, crop yield, cultivars, irrigation scheduling, plantwater relations, water use efficiency, India, Kerala, Vigna unguiculata,Vigna, Papilionoideae, Fabaceae, Fabales, dicotyledons, angiosperms,Spermatophyta, plants, eukaryotes, South Asia, Asia, DevelopingCountries, Commonwealth of Nations, India, black-eyed peas, cultivatedvarieties, southern peas, Field Crops (FF005) (New March 2000), PlantBreeding and Genetics (FF020), Plant Water Relations (FF062), PlantProduction (FF100), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management]

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