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Evapotranspiration Rates for Irrigated Crops at Geneva, New York 1
Author(s) -
Peck N. H.,
Vittum M. T.,
Gibbs G. H.
Publication year - 1968
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1968.00021962006000010008x
Subject(s) - evapotranspiration , lysimeter , agronomy , squash , crop , environmental science , crop coefficient , soil water , horticulture , biology , soil science , ecology
Evapotranspiration rates for alfalfa and vegetable crops were determined by measuring changes in available soil water, using gypsum blocks placed at depths of 10, 30, and 50 cm. Available soil water was maintained above 50% capacity in the surface 60 cm of soil for the vegetable crops, and for alfalfa after the first cutting was made in June. Each crop was grown in at least 5 years. Maximum daily evapotranspiration rates and the dates that they occurred as calculated from standard quadratic regression equations were: alfalfa, 3.8 mm, July 26; tomatoes, 4.3 mm, July 29; snap beans, 4.3 mm, August 4; cabbage, 4.3 mm, August 16; sweet corn, 4.6 mm, July 31; squash, 4.1 mm, July 31; and peas, 5.3 mm, June 30.