Publications Scientifiques

[ Article ] Comparative analysis of nutritional status and growth of immature oil palm in various intercropping systems in southern Benin

Date de soumission: 16-02-2021
Année de Publication: 2020
Entité/Laboratoire Laboratoire des Sciences du Sol (LSS)
Document type : Article
Discipline(s) : Sciences du sol
Titre Comparative analysis of nutritional status and growth of immature oil palm in various intercropping systems in southern Benin
Auteurs Koussihouèdé Hermione [1], Aholoukpè Hervé [2], Adjibodou Jeremie [3], Hinkati Haniel [4], Dubos Bernard [5], AMADJI Guillaume Lucien [6],
Journal: Experimental Agriculture
Catégorie Journal: Internationale
Impact factor: 0
Volume Journal: 2020
DOI: 10.1017/S0014479720000022
Resume Beninese smallholders associate food crops and cash crops with immature oil palms to reduce field maintenance costs and gain income before the palms reach productive phase. Little is known about the effects of these crops on the nutritional status and growth of the palms in their immature phase even though the yield of adult palms can be affected by the management practices during this phase. The objective of this study was to evaluate the most common oil palm-based intercropping systems found in southern Benin in terms of nutritional status and growth of the palm. Within 15 oil palm farms, we compared 15 immature oil palm fields where the crop succession associated with the oil palms was dominated by maize, cassava, tomato, and pineapple. The nutrient concentrations in the soil and the palm leaves, and growth indicators were measured at the end of the immature phase. We found that the palm growth indicators were the lowest in the successions with pineapple. N and P nutrition of the immature palms was satisfactory but K was deficient in all systems, especially in those with pineapple. The K levels in the soils and palm leaves were correlated. Rough field budgets comparing the amounts of N and K applied to the crop successions with their N and K exports from non-returning products indicated that soil indigenous K supply would be particularly depleted in the systems with pineapple. We concluded that the young oil palms were affected by the competition for K exerted by the crop successions with pineapple even though they were the most fertilized in the region. The high profitable crop is therefore associated with the lowest growth rates of the immature palms. The mineral fertilizer management in these oil palm temporary intercropping systems should be improved
Mots clés Intercropping systems; Oil palm; Annual crops
Pages 1 - 16
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