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Changes in the Ratio Between Sugar Beet Evapotranspiration and Pan Evaporation During the Growing Season
Author(s) -
Gornat B.,
Goldberg D.,
Sadan D.
Publication year - 1971
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/agronj1971.00021962006300020018x
Subject(s) - evapotranspiration , growing season , irrigation , agronomy , evaporation , pan evaporation , environmental science , sugar beet , water content , sugar , chemistry , biology , geography , ecology , meteorology , biochemistry , geotechnical engineering , engineering
Evapotranspiration by sugar beets and evaporation from a Class A pan were measured at 4‐ and 6‐day intervals during the period November‐May. Plant development and the progressive coverage of the ground by foliage were also followed. The ratio between evapotranspiration and evaporation, which might be used as an indicator of how much irrigation water to apply, changed during the course of the growing season. This change was found to be independent of plant development or ground cover, but was related to evaporative conditions, and even more so to the moisture content of the upper soil layer. The effect of these two factors on the change in the ratio was linear.