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Icacina oliviformis (Icacinaceae): A close look at an underexploited food plant. III. Ecology and production

Icacina oliviformis (Icacinacée)

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Abstract

Data are presented on the ecology and production ofIcacina oliviformis (Poiret) Raynal in natural stands in northern Central African Republic. The species grows on a variety of soils and in numerous plant communities. It is fire adapted, and thrives when burned in the early dry season. The plant is primarily bee pollinated and has a number of pests that infest the stems and young fruits. Plant densities are high, with a maximum of ca. 5345 plants/ha in the study sites. Standing tuberous root biomass can be considerable, with a maximum of ca. 19904 kg/ha for the study sites. Seed yield in the sample sites was relatively low with a maximum of ca. 214 kg/ha. With proper management, yields of both seed and tuberous roots could be substantially increased.

Résumé

Un Aperçu sur une Plante Comestible Sous-Exploitée. III. Ecologie et Production. L’objet de ce papier est la presentation de I’écologie et la production dans des peuplements naturels d’Icacina oliviformis dans le nordde la République Centrafricaine. Cette espèce est adaptée a plusieurs associations phytoécologiques et à plusieurs formations pédologiques. I. oliviformis est une pyrophyte et pousse mieux sous un regime de brulis annuels. Les principaux vecteurs de pollinisation sont les abeilles. Les tiges et lesjeunes fruits sont attaqués par divers insectes nuisibles. Les densités maximales des plantes sont très elevées avec un maximum de 5345 pieds/ha dans les parcelles étudiées. La biomasse des tubercules peut être très élevée, atteignant 19 904 kg/ha dans les parcelles étudiées. La production annuelle de graines est assezfaible, elle atteind un maximum de 214 kg/ha. La production de tubercules et de graines pourraient être beaucoup plus élevées avec un systeme agricole approprié.

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Fay, J.M. Icacina oliviformis (Icacinaceae): A close look at an underexploited food plant. III. Ecology and production. Econ Bot 47, 163–170 (1993). https://doi.org/10.1007/BF02862019

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