Kamkam Woumou

2 papers in the library · publishing 2019

Papers

Sustainable Intensification of Sorghum and Pearl Millet Production by Seed Priming, Seed Treatment and Fertilizer Microdosing under Different Rainfall Regimes in Mali

Agronomy November 12, 2019 Adama Coulibaly, Kamkam Woumou, Jens B. Aune

In the drylands of West Africa, low-cost methods such as seed priming and microdosing of fertilizer can boost sorghum and millet yields, but their effectiveness depends on local rainfall. Over four years in Mali, microdosing 0.4 g NPK per hill (4 kg/ha) worked best in central Mali, while 0.8 g NPK per hill (20 kg/ha) was best in southern Mali. Seed priming helped in central but not southern Mali. Adding a urea top dressing (1 g per hill, 25 kg/ha) improved yields only in southern Mali. Sorghum responded better to microdosing than pearl millet. A decision tree was created to guide farmers on crop and fertilizer choices based on rainfall.

DOI: 10.3390/agronomy9100664 Full text Microdosing Seed priming Seed treatment Economic return +2

Enhancing Maize Production in Mali: The Role of Fertilizer Microdosing and Mechanization in Improving Yield, Economic Returns, and Reducing Labor Use

Kamkam Woumou, Adama Coulibaly, Jens B. Aune

Maize grain yield increased with NPK microdosing rates up to 93 kg/ha, producing 1029 kg/ha (61.3%) more grain than the control in Mali. A rate of 63 kg NPK/ha matched the yield and economic return of the recommended 100 kg NPK/ha applied in rows. The 78.1 kg NPK/ha rate gave the highest average gross margin and value-cost ratio across two price scenarios. All fertilizer treatments had a value-cost ratio above two, indicating low financial risk even with non-subsidized fertilizer. Manual sowing and microdosing required 11.4 man-days/ha, versus 1.0 man-days/ha for mechanized operations, suggesting farmers will adopt microdosing only if mechanized.

DOI: 10.21203/rs.3.rs-5331059/v1