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Effect of Compost Based Local Substrates on Soil Fertility and Agronomic Performance of Cowpea (Vigna unguiculata (L.) Walp) in Burkina Faso Semi-Arid Zone.

Koulibi Fidèle Zongo1*, Mahamoudou Koutou1, Eric Ouedraogo2, Wendyiida Valérie Sawadogo1, Paligwende Kabore1, Adjarata Regtoumda1, Cynthia Stella Yasmine Passo Tiendrebeogo1 and Edmond Hien3

1University Center of Tenkodogo, Thomas SANKARA University, Saaba, Burkina Faso

2Institute for the Environment and Agricultural Research. Ouagadougou, Burkina Faso

3Department of Life and Earth Sciences Training and Research Unit, Joseph KI-ZERBO University, Ouagadougou, Burkina Faso

Corresponding author: fidelezongo62@gmail.com

DOI : http://dx.doi.org/10.12944/CARJ.13.3.13

Article Publishing History

Received: 13 Nov 2025
Accepted: 27 Nov 2025
Published Online: 16 Dec 2025

Review Details

Reviewed by: Dr. Seema Lall
Second Review by: Dr. Prajakta Mohite
Final Approval by: Dr. Aristidis Matsoukis

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Abstract:

Declining soil fertility remains a major constraint for farmers in the semi-arid Sahelian regions. This study assessed the effects of increasing rates of compost combined with zaï pits on the productivity of the cowpea variety “Komecallé” (Vigna unguiculata (L.) Walp) and on soil fertility. Soil samples and agronomic parameters were collected using a completely randomized block design with four treatments replicated four times in Pabré, Burkina Faso: T0 = Zaï only; T1 = Zaï + 1 t ha⁻¹ of compost; T2 = Zaï + 2 t ha⁻¹; and T3 = Zaï + 3 t ha⁻¹. Analysis of variance (ANOVA) and Tukey’s HSD test at the 5% significance level were applied. Results revealed that mineral nitrogen increased by 18,9%, 23,9%, and 22,1%; available phosphorus by 21,3%, 44,7%, and 23,6%; and available potassium by 21,7%, 18,2%, and 22,6% under T3, T2, and T1 respectively. Haulm yields increased significantly by 65% under T3, while grain yields increased by 82% under T2. The treatment T2 (2 t ha⁻¹ compost) proved to be the most effective option for enhancing both productivity and soil fertility. The valorization of local substrates could contribute in soil fertility and cowpea production policies in semi-arid regions and reduce fertilizers cost for farmers.

Keywords:

Burkina Faso; Compost; Cowpea; Growth and yields; Soil fertility;  Zaï

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Zongo K. F, Koutou M, Ouedraogo E, Sawadogo W. V, Kabore P, Regtoumda A, Tiendrebeogo C. S. Y. P, Hien E. Effect of Compost Based Local Substrates on Soil Fertility and Agronomic Performance of Cowpea (Vigna unguiculata (L.) Walp) in Burkina Faso Semi-Arid Zone. Curr Agri Res 2025; 13(3). doi : http://dx.doi.org/10.12944/CARJ.13.3.13

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Zongo K. F, Koutou M, Ouedraogo E, Sawadogo W. V, Kabore P, Regtoumda A, Tiendrebeogo C. S. Y. P, Hien E. Effect of Compost Based Local Substrates on Soil Fertility and Agronomic Performance of Cowpea (Vigna unguiculata (L.) Walp) in Burkina Faso Semi-Arid Zone. Curr Agri Res 2025; 13(3). Available from: https://bit.ly/3KKSlpR

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