Abdoulaye Mando

University of Bamenda

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L. Stroosnijder

Wageningen University & Research

Robert B. Zougmoré

Alliance for International Medical Action

ÉO

Élisée Ouedraogo

Burkina Faso Ministry of the Environment, Green Economy, and Climate Change

L. Brussaard

Wageningen University & Research

Badiori Ouattara

Institut de l'Environnement et Recherches Agricoles

Jean Mianikpo Sogbedji

University of Lomé

Korodjouma Ouattara

Institut de l'Environnement et Recherches Agricoles

H. Breman

International Fertilizer Development Center

Marcel Bonzi

Mathurin Fomekong

University of Bamenda

Cooperative Institutions

Wageningen University & Research

International Fertilizer Development Center

Institut de l'Environnement et Recherches Agricoles

Ahmadu Bello University

University of Bamenda

Graduate School Experimental Plant Sciences

World Agroforestry Centre

Plant Production Research Institute

International Center for Tropical Agriculture

Centre National de la Recherche Scientifique et Technologique

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Delayed and fractional-order dynamics of a model for earthquake induced by stress perturbations

Physica Scripta (2024)

Mbelle Samuel Bisong I. A. Mofor Mathurin Fomekong L C Tsasse Abdoulaye Mando

Abstract Fractional calculus and time delay provide a powerful tool to model complex systems with memory and fractal systems and, the viscoelastic systems. Earthquakes are both complex systems with long-memory and some of their faults have fractal properties and, the rocks constituting faults have viscoelastic behavior. In this paper, we examined the dynamics of the spring-block considering the fractional viscous damping force and interaction between the blocks. The shear stress response is studied using the harmonic balance method and the numerical simulations are performed through Adams-Bashforth-Moulton scheme. The effects of the fractional-order and time delay on the amplitude-frequency curves and on the transition between steady state and seismic regime are investigated. The system response shows the existence of the resonance and anti-resonance. It is appears that the resonance amplitude and resonance frequency are strongly dependent on the time delay and fractional-order. This resonance phenomenon results in an accumulation of energy which can lead to the destabilization of the fault system. At the anti-resonance the system response has minimum amplitude, and the blocks move without accumulated energy. The results show that the delay and fractional viscous can affect the properties of the rock, which is characterized by the modified linear stiffness coefficient, modified linear damping coefficient and the modified linear friction coefficient. The stability and hopf bifurcation are investigated and the critical value of the time delay for the occurrence of Hopf bifurcation is determined. The transition from stationary state to the periodic orbit and vice-versa through the hopf bifurcation is observed in the system.

Dynamics

10.1088/1402-4896/ad20ba

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Citations (1)

Nitrogen flows and balances as affected by water and nutrient management in a sorghum cropping system of semiarid Burkina Faso

Field Crops Research (2004)

Robert B. Zougmoré Abdoulaye Mando L. Stroosnijder Serge Guillobez

Nutrient Management

Cropping system

10.1016/j.fcr.2004.03.006

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Citations (30)

Socio-economic Determinants and Trends on Fertilizer Use in West Africa

Springer eBooks (2018)

Amatevi Raoul Klutse A. Bationo Abdoulaye Mando

Summit

Hectare

10.1007/978-3-319-58789-9_14

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Citations (5)

Moisture conservation and fertilizer use for sustainable cotton production in the sub-humid Savanna zones of Nigeria

Archives of Agronomy and Soil Science (2012)

A. C. Odunze Abdoulaye Mando Jean Mianikpo Sogbedji I. Y. Amapu Bitrus Dawi Tarfa

Abstract In the arid and semi-arid regions, soil moisture deficiency largely limits sustainable crop production. In the Nigerian dry Savanna (Northern Guinea savanna, arid and semi-arid zones), dry spells commonly occur between June and July, often lasts beyond three weeks. Rainfall is unevenly distributed and results in insufficient soil moisture for crop production. Soils at the uplands are commonly sandy loam to loamy sand at the surface horizons, have inherently poor fertility status, poor moisture retention capacity and rapidly degrade due to sheet erosion, continuous cultivation and overgrazing. The study on cross banding of ridges to conserve moisture and use of boron in association with nitrogen, and without boron was therefore conducted in Sabon Gari Garu areas in Katsina State, in the dry savanna of Nigeria during the 2007 and 2008 cotton cropping seasons. Data obtained were statistically analyzed. Results show that treatment with tied ridges + NPK + boron (415.70 kg ha−1 and 312.47 kg ha−1 cotton in respective years) resulted in significant higher cotton lint yields in 2007 and 2008 than NPK + boron treatments (245.20 kg ha−1 and 255.16 kg ha−1 cotton in 2007 and 2008, respectively). Cross banding of ridges is recommended for farmers to conserve soil moisture and application of NPK + boron fertilizers. Keywords: sustainable agriculturesoil moisture stresswater conservationsub-humid Savannasoil fertility management Acknowledgments The authors acknowledge thankfully the financial and logistic support granted by the International Fertilizer Development corporation – Africa Lome and the Institute for Agricultural Research (IAR/ABU), Ahmadu Bello University, Zaria Nigeria towards the study and this publication.

10.1080/03650340.2012.697997

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Détermination Des Formules D’engrais Minéraux Et Organiques Sur Deux Types De Sols Pour Une Meilleure Productivité De Maïs (Zea mays l.) Dans La Commune De Banikoara (Nord-Est Du Bénin)

European Scientific Journal ESJ (2016)

Mouïnou A. Igue Amour C. Oga I. Balogoun Aliou Saïdou G. Ezui

The land degradation in Benin becomes a major concern for the durability of the production systems. For a better maize productivity in the North of the country, the experimentation was carried out during the production season 2012-2013, on two soil types: concretionned ferruginous tropical soil and hydromorphic ferruginous tropical soil. The objective was to validate in farmer’s condition, the different mineral and organo-mineral formulas simulated by DSSAT model in order to improve EVDT-ETR- 97 maize grain yield in northern Benin. The experimental design for this experiment was a complete randomized bloc design with four replications. The ten treatments of experiment were essentially the N-P-K formula (115- 30-75; 88-30-35; 88-30-35-manure; 42-30-35-manure; 74-20-23; 74-20-23- manure; 51-20-23; 51-20-23-manure; 0-0-0; 0-0-0-manure). Maize grain yields were subjected to two-way analysis of variance (soil type and fertilizer formula). The results show that compared to hydromorphic tropical ferruginous soils , the concretionned tropical ferruginous soils have increased yield grain harvest by 16.50%. In addition, the simulated doses of N, P and K (88-30-35 and 42-30-35-dung-manure) have induced the high yields respectively 5353.67 ± 844.39 and 3391 ± 533 65 kg / ha. The contribution of organo-mineral fertilizers through cow dung was positive on the improvement of the maize yield. The formula N88P30K35-manureinduced an increase of 10.51% compared to the N88P30K35 combination. On the other hand, the N42P30K35F treatment increased the yield of 13.06% compared to N42P30K35. Also, the results indicated that the yield of maize grain varied significantly depending on the soil type and applied treatments. In conclusion, the contribution of organic manure improved the fertility level of soils studied and the maize productivity.

Cow dung

DSSAT

10.19044/esj.2016.v12n30p362

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Citations (7)

Soil fauna and soil function in the fabric of the food web

Pedobiologia (2006)

L. Brussaard Mirjam Pulleman Élisée Ouedraogo Abdoulaye Mando Johan Six

Soil Food Web

Soil functions

Soil ecology

Soil Quality

10.1016/j.pedobi.2006.10.007

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Citations (205)

Rôle des nutriments dans le succès des techniques de conservation des eaux et des sols (cordons pierreux, bandes enherbées, zaï et demi‐lunes) au Burkina Faso

Science et changements planétaires / Sécheresse (2004)

Robert B. Zougmoré Korodjouma Ouattara Abdoulaye Mando Badiori Ouattara

Diverses recherches menees au Burkina Faso ont porte sur la gestion de la fertilite des sols, le controle du ruisellement et la conservation des sols. L‘objectif de la presente etude est d‘evaluer l‘impact des techniques de conservation des eaux et des sols utilisees ou non avec des ressources minerales et organiques de fertilisants. Les dispositifs disponibles a la station de recherche de Saria (12°16‘ N, 2°9‘ W, 300 m d‘altitude) et en milieu paysan a Pougyango (12°59‘ N et 2°9‘ W) ont ete mis a contribution. A Saria, les techniques de controle du ruissellement et de l‘erosion que sont les cordons pierreux et les bandes enherbees ont ete couplees a la fertilisation minerale ou organique. A Pougyango, les techniques de collecte des eaux de surface, demi‐lunes et zai, ont ete appliquees parallelement a la fertilisation organique et minerale et au paillage. Les resultats ont montre que la reduction du ruissellement est de 53 % pour les cordons pierreux contre 45 % pour les bandes enherbees. La source organique de fertilisation est apparue plus efficace dans le controle du ruissellement et de l‘erosion que l‘engrais azote mineral. L‘utilisation conjointe du compost et des cordons pierreux a entraine un accroissement du rendement du grain de sorgho de 106 %, celle du compost et de la bande enherbee une hausse de rendement de 160 %. De meme les demi‐lunes avec apport de compost ou de fumier ont donne de meilleurs rendements par rapport a la fertilisation minerale (N seul) et au temoin sans engrais. Il est apparu que la conservation de l‘eau sans addition de nutriments n‘induit pas une production supplementaire significative des cultures, particulierement en annee de bonne pluviometrie. La combinaison des techniques de conservation des eaux et des sols (CES) et de la fertilisation organique ameliore les caracteristiques chimiques du sol et sa productivite.

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Citations (22)

The Lesson of Drente's “Essen”: Soil Nutrient Depletion in sub-Saharan Africa and Management Strategies for Soil Replenishment

Springer eBooks (2008)

H. Breman Bidjokazo Fofana Abdoulaye Mando

Nutrient Management

10.1007/978-1-4020-6778-5_8

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Citations (8)

Benefits of integrated soil fertility and water management in semi-arid West Africa: an example study in Burkina Faso

Nutrient Cycling in Agroecosystems (2008)