Abstract
In greenhouse studies, overhead watering or subsurface irrigating soil can cause fluctuating moisture content, as can treatments such as surface application of residue used in cover crop research. This paper introduces a method of capillary mat subirrigation that maintained soil moisture at about field capacity for 16 d while no moisture could be detected after 6 d in soil placed under similar conditions that was not irrigated. In another study, subirrigation eliminated differences in soil moisture due to the presence of surface-applied residue and moisture supplied by hand watering from overhead was apparently removed from subirrigated treatments, which never differed in soil moisture content.
Published Version
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