The effect of organic matter amendment on soil water holding capacity change for irrigation water saving: Case study in Sahelian environment of Africa

Scientific Research and Essays

Jan-Mou Leu¹ 

关键词:  ;    Irrigation scheduling;    soil holding capacity;    organic matter;    Sub-Saharan Africa.;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

The present study uses a computer simulation modeltoevaluate the improvement ofsoilwaterholding capacitythroughthe application ofdifferent dosagesof organic mattertothree types of soil,namelysandy clay loam, sandy loam and sandunderSahelien condition. Additionally, a model for irrigation scheduling is tested for three selected crops (maize, bean and rice)in Ouagadougou region located in Burkina Faso, Sub-Saharan Africa.Onthebasis of theobserved data conditions, the irrigation depthsarenumerically computed during the growing stages.The computed results are shown to be 5times of irrigation for both maize and bean and 12 times of irrigation for rice. Rice crop presents high water depth and times of irrigation due to its high water requirement. The employed modelprovidesaconvenienttool to theextension agents formanually exploringthe irrigation schedule in Burkina Faso.Asthe content of the soil organic matterincreasesto 4 tons,the soil holding capacity including permanent wilting point, field capacity, saturation and saturated hydraulic conductivityareimprovedfor all types of soil in Ouagadougou.Thus, the organic matter applicationisrecommended for enhancing the soil holding capacity in low rainfall area.

【 授权许可】

CC BY