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[ Article ] Soil Fertility and Biodiversity of Arbuscular Mycorrhizal Fungi Associated with Cashew’s (Anacardium occidentale L.) Cultivars Characteristics in Benin (West Africa)

Date de soumission: 21-03-2017
Année de Publication: 2015
Entité/Laboratoire Laboratoire des Sciences du Sol (LSS)
Document type : Article
Discipline(s) : Agriculture & Agronomie
Titre Soil Fertility and Biodiversity of Arbuscular Mycorrhizal Fungi Associated with Cashew’s (Anacardium occidentale L.) Cultivars Characteristics in Benin (West Africa)
Auteurs BALOGOUN IBOURAIMAN [1], SAIDOU ALIOU [2], KINDOHOUNDE NARCISSE [3], AHOTON ESSÈHOU LÉONARD [4], AMADJI LUCIEN GUILLAUME [5], AHOHUENDO BONAVENTURE COHOVI [6], BABATOUNDE SÉVÉRIN [7], CHOUGOUROU CHÈPO DANIEL [8], BABA-MOUSSA LAMINE SAÏD [9], AHANCHEDE ADAM [10],
Journal: International Journal of Plant & Soil Science
Catégorie Journal: Internationale
Impact factor: 0
Volume Journal: 5
DOI:
Resume The present study aims to assess the biodiversity of arbuscular mycorrhizal fungi (AMF) associated with cashew (Anacardium occidentale L.) cultivars characteristics in Benin (West Africa). 108 soil samples were collected at 0-20, 20-40 and 40-60 cm depth under cashew trees at Glazoué in the centre Benin. Cashew’s cultivars characteristics regarding nut and apple size, apple colors and classes of Diameter at Breast Height (DBH) were the treatments. Soil chemical properties, AMF spores’ density and the diversity of AMF in the soil were assessed. Plantation of cashew improved the stock of soil organic carbon (11.24±0.63 and 10.93±0.71 g/kg for 0-20 cm soil depth respectively for cultivars producing big nuts and big apples and cultivars producing small nuts and small apples) and total nitrogen content (1.29±0.11 and 1.21±0.12 g/kg for 0-20 cm soil depth respectively for cultivars producing big nuts and big apples and cultivars producing small nuts and small apples) but it depletes available phosphorus (36.86±6.53 and 41.42±9.22 mg/kg for 0-20 cm soil depth respectively for cultivars producing big nuts and big apples and cultivars producing small nuts and small apples) and exchangeable potassium (0.93±0.10 and 0.79±0.04 cmol/kg for 0-20 cm soil depth respectively for cultivars producing big nuts and big apples and cultivars producing small nuts and small apples). Seven species of AMF (Scutelospora gregarine, Acaulospora colossica, Acaulospora lacunosa, Enthrophospora infrequens, Glomus hoi, Glomus geosporum and Glomus sp.) were identified. They belong to three families and four genera. The species belonging to Glomeracea family were dominants (91.8%) against 5.5% and 2.7% respectively for the Gigasporaceae and Acaulosporaceae. In general, the average numbers of AMF spores were 5.63±0.26; 3.54±0.19 and 1.94±0.15 per gramme of dry soil respectively for 0-20, 20-40 and 40-60 cm depth. The community of AMF was fairly diversified in the soil under cashew’s trees. There was an equitable distribution of AMF genera associated with cashew’s cultivars characteristics tree.
Mots clés Cashew plantation; Shannon-Wiener diversity index; Pielou index; land-use system; tropical ferruginous soils.
Pages 50 - 63
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