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Water Storage and Drainage under a Row Crop on a Sandy Soil 1
Author(s) -
Black T. A.,
Gardner W. R.,
Tanner C. B.
Publication year - 1970
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/agronj1970.00021962006200010016x
Subject(s) - lysimeter , drainage , evapotranspiration , environmental science , hydrology (agriculture) , soil water , water balance , well drainage , dns root zone , soil science , hydraulic conductivity , agronomy , geology , soil salinity , geotechnical engineering , biology , ecology
Drainage from the root zone of snap beans grown on a sandy soil was measured by a lysimeter, and calculated from Darcy's law, and by a hydrologic balance equation. At the end of a 60‐day period the Darcy's law calculation gave a 11% higher estimate of the cumulative drainage than the other two methods. Of the 32 cm of precipitation and decrease of 3 cm in water storage from emergence to harvest, evapotranspiration accounted for 17 cm, and drainage for 18 cm. A useful estimate of the drainage from the root zone in sandy soil was obtained from the space averaged capillary conductivity of the soil in which rooting occurred.