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Evapotranspiration in Relation to the Development of the Corn Crop 1
Author(s) -
Denmead O. T.,
Shaw R. H.
Publication year - 1959
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/agronj1959.00021962005100120009x
Subject(s) - evapotranspiration , crop , agronomy , shading , environmental science , growing season , period (music) , crop coefficient , evaporation , biology , geography , ecology , art , physics , acoustics , visual arts , meteorology
Synopsis The corn crop in Iowa approaches the condition of a green crop, actively growing and completely shading the ground for a period of only 2 to 3 weeks during its growing season. In this period the ratio of evapotranspiration to open pan evaporation is 0.81. Before this period the ratio increases with increasing leaf area, and afterwards declines with declining physiological activity of the crop.