Application of Revised Priestley-Taylor Model for Soil Moisture Prediction in a Maize Field under Drought Condition
Year: 1997
Type: article
Abstract: Based on measurement in a maize field during 1994 and 1995, the modified Priestley-Taylor model presented by Nakayama et al. (1993) was tested for predicting soil moisture in the field under drought conditions. It was found that the correction factor in the model was strongly influenced by soil hydraulic property. For a wide region soil moisture prediction, to remove difference of soil hydraulic property, the modifying term in the model should use soil water potential instead of soil moisture content. Under drought conditions, for a maize field, the main soil water depletion was not in the shallow root zone, but extended to a deeper soil layer. In that condition for the deeper root crops, when this modified model is applied, the root zone should be regarded as a thicker soil layer.
Authors: Houquan Lu, Keiichi Nakayama, Guirui Yu, Jun Suzuki
Institution: Chiba University
Language: English
Topic: Soil and Unsaturated Flow
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W2056987927