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Effect of Irrigation and N‐Fertilization (Fertigation) Scheduling on Tomato in the Jordan Valley

Effect of Irrigation and N‐Fertilization (Fertigation) Scheduling on Tomato in the Jordan Valley Tomato (Lycopersicon esculentum mill. cv. Petopride) is the most important vegetable crop in Jordan; its production is characterized by inadequate irrigation and fertilization practices, especially under open field conditions. A field study was carried out to determine the effect of different irrigation intervals and different N‐fertilizer doses on water use, tomato yields and residual soil nitrogen. Results indicated significant differences in water use and tomato yields between irrigation treatments. Highest yield (51.4 ton ha−1) was obtained under three irrigations per week with 504 mm total water supply, whereas under irrigation once a week 35.3 ton ha−1were produced with 353 mm total water supply. There were no significant differences in yield between fertigation with ten equal time intervals and fertigations with intervals as per crop requirements, the yields were 47.1 ton ha−1 and 44.5 ton ha−1, respectively. However, yield was significantly lower with three fertigations at equal intervals and equal doses (35.8 ton ha−1) throughout the season. There were no significant differences between mineral nitrogen forms in terms of yield effects. Significant irrigation effects were observed on total soil nitrogen. Residual soil N was 0.052% in the surface layer (0–30 cm), and 0.030% in the subsurface layer (30–60 cm). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Agronomy and Crop Science Wiley

Effect of Irrigation and N‐Fertilization (Fertigation) Scheduling on Tomato in the Jordan Valley

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References (7)

Publisher
Wiley
Copyright
Copyright © 1997 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0931-2250
eISSN
1439-037X
DOI
10.1111/j.1439-037X.1997.tb00492.x
Publisher site
See Article on Publisher Site

Abstract

Tomato (Lycopersicon esculentum mill. cv. Petopride) is the most important vegetable crop in Jordan; its production is characterized by inadequate irrigation and fertilization practices, especially under open field conditions. A field study was carried out to determine the effect of different irrigation intervals and different N‐fertilizer doses on water use, tomato yields and residual soil nitrogen. Results indicated significant differences in water use and tomato yields between irrigation treatments. Highest yield (51.4 ton ha−1) was obtained under three irrigations per week with 504 mm total water supply, whereas under irrigation once a week 35.3 ton ha−1were produced with 353 mm total water supply. There were no significant differences in yield between fertigation with ten equal time intervals and fertigations with intervals as per crop requirements, the yields were 47.1 ton ha−1 and 44.5 ton ha−1, respectively. However, yield was significantly lower with three fertigations at equal intervals and equal doses (35.8 ton ha−1) throughout the season. There were no significant differences between mineral nitrogen forms in terms of yield effects. Significant irrigation effects were observed on total soil nitrogen. Residual soil N was 0.052% in the surface layer (0–30 cm), and 0.030% in the subsurface layer (30–60 cm).

Journal

Journal of Agronomy and Crop ScienceWiley

Published: Aug 1, 1997

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