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Effective Design for Small Flood‐Irrigated Field Plots
Author(s) -
Ghodrati Masoud,
Ernst Frederick F.,
Jury William A.
Publication year - 1990
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1990.03615995005400030053x
Subject(s) - ponding , infiltrometer , hydrology (agriculture) , environmental science , macropore , irrigation , infiltration (hvac) , soil science , water level , levee , soil water , geotechnical engineering , geology , hydraulic conductivity , drainage , geography , agronomy , meteorology , mesoporous material , ecology , biochemistry , chemistry , cartography , biology , catalysis
Many studies dealing with water flow in soil require water application through ponding. A method is described for the preparation of a large number of adjacent ponded field plots for experimental purposes. Individual plots are enclosed by corrosion‐resistant, metal strips extending 20 cm into the soil. A single border area around each group of plots functions as a buffer zone, similar to the outer zone of a double‐ring infiltrometer. Simultaneous uniform ponding of individual plots and the border area is achieved by a network of bubbler sprinkler units, with each plot having a separate water flow meter and valve unit to control the rate and amount of each irrigation episode. Such a system enabled study of the influence of macropore structure on the transport of various pesticides and dyes under continuous and intermittent flood irrigation.