Energy requirements and yield of drip-irrigated potato.

Book Title: NA
Year Published: 2003
Month Published: NA
Author: Attaher, S. M. ; Medany, M. A. ; Aziz, A. A. A. ; Mostafa, M. M.
Book Group Author: NA
Abstract:

The effects of subsurface and surface irrigation systems on the performance of potato cv. Diamont were studied in Beheira Governorate, Egypt, during the winter seasons of 1999/2000 and 2000/2001. Two types of drip line, i.e. GR (0.5 m spacing, 4 litre/ha discharge and 1.0 bar operating pressure) and T-Tape (0.3 m spacing, 2 litre/ha discharge and 0.8 bar operating pressure), and three levels of irrigation, i.e. 75, 100 and 125% of crop water consumption, were used. With surface drip irrigation, the soil moisture content decreased gradually in the horizontal direction and reached field capacity at a distance of 25 and 30 cm from the T-Tape and GR emitters, respectively. With subsurface drip irrigation, the moisture content was higher than field capacity by up to 22 and 25% near the T-Tape and GR emitters, respectively, in the horizontal direction, and throughout 30 cm in the vertical direction. The total yield was not significantly affected by the level of irrigation but was significantly affected by the drip irrigation system. The highest yield (13.8 t/feddan) was obtained with the T-Tape surface drip system. Water use efficiency, energy use efficiency and cost of production increased, whereas energy consumption decreased with the reduction in irrigation level. Among the irrigation systems, the highest water use efficiency (12.4 kg/m3) and energy use efficiency (159 kg kW-1 h-1), and the lowest cost of production (55.1 units/t) were recorded for T-Tape surface drip system, whereas the lowest amount of consumed energy (80.1 kW h-1 feddan-1) was recorded for T-Tape subsurface drip irrigation at 75% irrigation level. [1 feddan=0.42 ha].

Pages: 191 - 198
URL: http://0-search.ebscohost.com.catalog.library.colostate.edu/login.aspx?direct=true&AuthType=cookie,ip,url,cpid&custid=s4640792&db=lah&AN=20033153399&site=ehost-live
Volume: NA
Number: 608
Journal: Acta Horticulturae
Journal ISO: NA
Organization: NA
Publisher: NA
ISBN: NA
ISSN: 0567-7572
DOI: NA
Keywords:

application rates, costs, crop yield, energy consumption,plant water relations, potatoes, subsurface irrigation, surfaceirrigation, trickle irrigation, water use efficiency, Egypt, Solanumtuberosum, Solanum, Solanaceae, Solanales, dicotyledons, angiosperms,Spermatophyta, plants, eukaryotes, North Africa, Africa, MediterraneanRegion, Middle East, Developing Countries, costings, energy use, energyutilization, Agricultural Economics (EE110), Field Crops (FF005) (NewMarch 2000), Plant Water Relations (FF062), Plant Production (FF100),Soil Water Management (Irrigation and Drainage) (JJ800) (Revised June2002) [formerly Soil Water Management]

Source: EBSCO
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