Soil water dynamics in row and interrow positions in soybean (Glycine max L.)

摘要: Quantitative knowledge of infiltration processes and the mechanisms that control water movement in soil is necessary to properly manage chemical use agricultural fields. The objective this study was compare content dynamics row interrow positions a soybean crop (Glycine max L.) under conventional (plow) tillage. Two field plots (Beltsville silt loam soil, Fine-loamy mixed mesic Typic Fragiudult) were instrumented with Time Domain Reflectometry (TDR) probes at 0–10 cm, 0–25 cm 0–40 depths. TDR installed positions. Soil continuously monitored 1 hour intervals. distribution infiltrated evapotranspiration showed strong row-interrow patterns. received significantly more during precipitation than Water loss, due evapotranspiration, also greater position position. Both plant characteristics appeared be important factors for redistribution. results suggested presence canopy altered surface boundary conditions and, hence, volume infiltrating water. Results suggest order model crops, ability simulate architecture flow two dimensions necessary.