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Kyoto University (2020)

Effectiveness of various types of mulching on soil moisture and temperature regimes under rainfed soybean cultivation

KADER Mohammad Abdul

Titre : Effectiveness of various types of mulching on soil moisture and temperature regimes under rainfed soybean cultivation

Auteur : KADER Mohammad Abdul

Université de soutenance : Kyoto University

Grade : Doctoral dissertation 2020

Descriptif
The overall objectives of the study are to summarize effectiveness of various mulching materials on soil moisture and temperature regimes and their effects on water and crop productivity of rainfed soybean cultivation. Specific objectives of the study are as follows :
1. To evaluate the effects of straw and newspaper mulching materials on soil hydrothermal regimes (soil moisture and temperature, soil water consumption and its distribution in crop root zone), which affect growth, yield and water use efficiency of rainfed soybean cultivations.
. To evaluate and compare the effective rainfall, total readily available soil moisture and soil moisture extraction pattern of the two (plastic, plastic-hole) mulching and bare soil treatments under soybean cultivation.
3. To investigate the comparative effects of three popular colors (black, silver and transparent) of plastic film mulches and a bare soil control (no mulch) on soil temperature and soil water consumption along with their impacts on growth, yield and water productivity of rainfed soybean.
4. To simulate water and heatflow regimes by HYDRUS-1D(Šimůnek et al., 1998) under rice straw mulching and bare soil in order to analyze water consumption, ratio of vapor to total water transport, water balance and heat storage in the root zone in the field soil of rainfed soybean field. Présentation

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