Effect of varying irrigation schedules on seed yield, oil yield, water use efficiency and economics of winter sunflower.

Book Title: NA
Year Published: 2005
Month Published: NA
Author: Kaushal, A. K. ; Sharma, R. S. ; Vyas, K. M.
Book Group Author: NA

A study was conducted in Madhya Pradesh, India during winter seasons of 1995-96 and 1996-97 to evaluate the effects of varying irrigation schedules on the seed yield, oil yield, water use efficiency and productivity of winter sunflower cv. Morden. The treatments comprised 4 irrigation frequencies; moisture depletion percentages (20, 30, 40 and 50%); ID:CPE ratios of 1.0, 0.8, 0.6 and 0.4; and moisture stress levels at growth stages (no stress, stress at 8-9 leaf stage, stress at flowering and stress at grain filling). Three irrigations on the different stages coinciding with 30, 55 and 75-day growth stages, resulted in maximum seed yield (9.52 q/ha), oil yield (3.94 q/ha), returns (net returns of Rs. 3365/ha and benefit cost ratio of 1.50) and water use efficiency of 3.32 kg/ha per mm. These values were significantly reduced when irrigation was withheld at any of the growth stages, or applying 3 irrigations or based on ID:CPE. The flowering and 8-9 leaf stages were more sensitive to irrigation treatments than grain development stage. The consumptive use of water was minimum under one irrigation under 50% depletion of irrigation or at 0.4 ID:CPE.

Pages: 23 - 27
URL: http://0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=20073049631&site=ehost-live
Volume: 39
Number: 1
Journal: JNKVV Research Journal
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 0021-3721

cost benefit analysis, crop growth stage, crop yield,economic analysis, irrigation, irrigation scheduling, plant oils, plantwater relations, sunflowers, water use, water use efficiency, yieldcomponents, India, Madhya Pradesh, Helianthus annuus, Helianthus,Asteraceae, Asterales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, South Asia, Asia, Developing Countries, Commonwealth ofNations, India, vegetable oils, watering, Field Crops (FF005) (New March2000), Agricultural Economics (EE110), Plant Physiology and Biochemistry(FF060), Plant Water Relations (FF062), Plant Production (FF100), SoilWater Management (Irrigation and Drainage) (JJ800) (Revised June 2002)[formerly Soil Water Management]

Source: EBSCO
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