Evapotranspiration Rates for Irrigated Crops at Geneva, New York
1968
Peck, N. H. | Vittum, M. T. | Gibbs, G. H.
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.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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