Soil nutrient management strategy required for sustainable and competitive cocoa production in Ghana

Afrifa Alex, Ofori Frimpong K., Acquaye S., Snoeck Didier, Abekoe M.K.. 2010. Soil nutrient management strategy required for sustainable and competitive cocoa production in Ghana. In : 16th International Cocoa Research Conference. Proceedings : towards rational cocoa production and efficient use ofr a sustainable world cocoa economy = 16e Conférence internationale sur la recherche cacaoyère.Actes ; 16 Conferencia Internacional de Pesquisas em Cacau. Actas ; 16 Conferencia Internacional de investigacion en cacao. Actas : vers une économie cacaoyère durable : quelles stratégies d'approche ? ; para uma produção racional de cacau e o seu uso eficiente para uma economia mundial sustentada do cacau ; hacia una produccion racional y un uso eficiente del cacao para la sustentabilitd. Lagos : Cocoa Producers' Alliance, 335-342. ISBN 978-065-959-5 Conférence Internationale sur la Recherche Cacaoyère. 16, Bali, Indonésie, 16 Novembre 2009/21 Novembre 2009.

Titre français : Stratégie de gestion des nutriments du sol nécessaire à une production cacaoyère durable et compétitive au Ghana / Titre portugais : Estratégia da gestão dos nutrientes do solo necessária para uma produção do cacau sustentável e competitiva no Gana / Titre espagnol : Estrategia de manejo de nutrientes del suelo necesaria para lograr una producción cacaotera sostenible y competitiva en Ghana

Résumé : Cocoa production on degraded soils in Ghana is less sustainable and less competitive because of increasing plant nutrient depletion and consequent degradation of soil resource base. The need for supplementary plant nutrients has led to current introduction of recommended cocoa fertilizers like Asaase Wura (N:P:K 0:22:18 + 9CaO + 7S + 6 MgO), Cocofeed (N:P:K 0:30:20), Potassium Rich Sidalco Liquid fertilizers (N:P:K 6:0:20 + 1 MgO + trace elements) and Balanced Sidalco Liquid fertilizer (N:P:K 10:10:10 + 1MgO + trace elements)for farmers. For an effective and efficient intervention to the existing problem, there is the need to monitor the levels of degradation of cocoa soils in the different ecological zones and cropping systems. A study was therefore conducted by sampling and analyzing eight hundred soils from four great soil groups covering different areas of the Ghana cocoa belt - Acrisols (75%), Lixisols (10%), Ferralsols (9%) and Nitisol (3%), within four cocoa regions; Eastern, Ashanti, Western and Central. This paper discusses the ratios of the primary and secondary nutrients in addition to their soil reactions, and was compared with the established ratios of nutrient elements in a good cocoa soil. The results showed the need to add calcium and nitrogen to the soils to meet the standard ratio of K: Ca: Mg of 2:17:8, and to augment the low nitrogen to phosphorus ratio in the soils. There is also still the need to search for fertilizer formulations with nitrogen and calcium that will be in the right forms and ratio to suit the nutrient changes recommended for sustainable and competitive cocoa production for the Ghana cocoa belt.

Classification Agris : F04 - Fertilisation
P35 - Fertilité du sol

Auteurs et affiliations

• Afrifa Alex, CRIG (GHA)
• Ofori Frimpong K., CRIG (GHA)
• Acquaye S., CRIG (GHA)
• Snoeck Didier, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA)
• Abekoe M.K., University of Ghana (GHA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/554227/)

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