WATER USE EFFICIENCY FOR JATROPHA IN SANDY SOIL

Zabady, F. I.; ELMeseery, A. A.; Nassar, A. A.; Ghanem, H. G.

doi:10.21608/mjae.2010.105355

WATER USE EFFICIENCY FOR JATROPHA IN SANDY SOIL

Document Type : Original Article

Authors

¹ Lect .Ag. Eng. Dept., Fac. of Ag., Azhar Univ., Cairo, Egypt.

² Assoc. Prof., Ag. Eng. Ag. Eng. Dept., Fac. of Ag. Azhar Univ., Cairo, Egypt.

³ Assoc. Prof. Water Manag and Irri Systems–Nati .Water. Res . C ,Cairo, Egypt.

⁴ Post grad. Stud. Agric., Dept., Fac. Ag. Azhar Univ., Cairo, Egypt.

10.21608/mjae.2010.105355

Abstract

This study was conducted at Wadi El-Natron area, season (2008-2009), to evaluate the influence of three irrigation systems (Bubbler, Micro-sprinkler and Trickle) on Jatropha production. Also, this work includes different water management techniques, (quantities 60%, 80% and 100% from ET_o and irrigation interval of 2 and 4 days). The objective of the present work is to implement some of these intervals and water deficits in computing actual evapotranspiration of Jatropha under desert conditions, to maximize the seeds oil content production of Jatropha under different irrigation systems to save water .The results are as follows:

Highest seeds yield production (302.40 kg/fed), was obtained under bubbler irrigation system at 100% applied irrigation water and 2 days intervals, comparing with micro-sprinkler and trickle irrigation systems (238.48 kg/fed) and (204.80kg/fed), respectively.
Maximum crude Jatropha oil content “CJO” (%) (29.33%) was obtained under trickle irrigation system at 60% applied irrigation water and 4 days intervals, comparing with micro-sprinkler and bubbler systems (24.2%) and (23.21%), respectively.
lowest actual evapotranspiration “ETa” for (initial, development, mid-season, and late-season) growth stages of value were (50.50, 326.37, 671.79 and 142.34) respectively and 1191mm for all-season, were obtained under trickle irrigation system at 60% applied irrigation water with 2 days intervals .
Water use efficiency under bubbler irrigation system at 80% applied water quantity and 2 day intervals (0.18 kg/m³) was highest than different treatments.

Main Subjects

Agricultural Irrigation and Drainage Engineering

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