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Effect of Irrigation and N‐Fertilization (Fertigation) Scheduling on Tomato in the Jordan Valley
Author(s) -
Deek J. M.,
Battikhi A. M.,
Khattari S.
Publication year - 1997
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1997.tb00492.x
Subject(s) - fertigation , irrigation , agronomy , ton , fertilizer , human fertilization , leaching (pedology) , lycopersicon , field experiment , crop , water use efficiency , irrigation scheduling , environmental science , mathematics , soil water , biology , fishery , soil science
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 −1 were 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).