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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9757

Title: Improvement in physical quality of a Sahelian Arenosol and implications on millet yield
Authors: Garba, Maman
Logah, Vincent
Wildemeersch, Jasmien
Mahaman, Sabiou
Yadji, Guéro
Quansah, Charles
Mensah, Bonsu
Cornelis, Wim
Abaidoo, Robert C.
Keywords: Soil physical quality
Psammentic Paleustalfs
Semi-Arid Africa
Soil structural stability index
Mixed model analysis
Issue Date: 2015
Publisher: Archives of Agronomy and Soil Science
Citation: Archives of Agronomy and Soil Science, 2015
Abstract: Poor soil fertility remains a threat to crop production and livelihoods in the Sahel. Understanding the impacts of proposed soil fertility management technologies on soil fertility status and millet yield is essential. We conducted a 2-year experiment to assess changes in selected physical properties of an Arenosol and their impacts on millet yields at Karabedji, Niger. Treatments consisted of four fertilizer rates applied on top and bottom farm types selected from a long-term experiment. Mixed-model analyses indicated considerable effects (P = 0.055) of fertilizer rates and farm types on soil structural stability being higher in the top farm than in the bottom farm type. Dexter’s soil physical quality index (S) varied significantly with soil depth. A significant correlation (R2 = 0.24) was found between the aggregate stability index and S. Plant available water recorded in fertilizer-treated soil was higher than the control and higher on the top farm than in the bottom farm. Fertilizer rates and farm types influenced millet yields. Moreover, we obtained positive relationships between millet yield and soil aggregate stability, and plant available water, thereby elucidating the significant role played by soil physical properties in influencing crop yields. S can be a simple way for assessing the physical quality of Sahelian sandy soil.
Description: An article published by Archives of Agronomy and Soil Science, 2015
URI: http://hdl.handle.net/123456789/9757
Appears in Collections:College of Science

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