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Effect of N‐nutrition and irrigation on fruit production of carob ( Ceratonia siliqua )
Author(s) -
Correia P. J.,
MartinsLoução M. A.
Publication year - 1993
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1993.tb05232.x
Subject(s) - ceratonia siliqua , irrigation , mediterranean climate , productivity , pan evaporation , human fertilization , agronomy , horticulture , mathematics , biology , ecology , economics , macroeconomics
A combined fertilization and irrigation experiment was initiated in order to see whether such treatment could improve the productivity of carob ( Ceratonia siliqua L. cv. Mulata) on Mediterranean marginal lands. Mature carob trees (20–30 years old) were submitted to 3 different irrigation levels (100%;, 50%; and 0%;) based on daily standard evaporation values, measured with a class A pan. For each water level either 21 or 63 kg N ha −1 was applied as ammonium nitrate. The results reported here refer to a two‐year experiment, and show that the productivity of the trees could be improved due to a positive interaction between water and N application. In addition, they suggest that also under the normal dry conditions of these Mediterranean systems nitrogen application is effective, even without irrigation.