Au Burkina Faso, l’élevage occupe plus de 80% des ménages ruraux et constitue le troisième produit d’exportation après l’or et le coton. De type extensif, cet élevage est basé essentiellement sur l’exploitation des ressources naturelles. Ainsi, il doit s’adapter aux grandes variations saisonnières et interannuelles des ressources en biomasse végétale et en eau. Or les aléas climatiques, l’étendue et la qualité des pâturages, de même que les contraintes rendent l’activité pastorale souvent précaire. C’est ainsi que cette étude a été initiée dans le but de contribuer à améliorer la production fourragère. Dans cette étude, Mucuna pruriens a été cultivé en serre et inoculé avec deux inocula de champignons mycorhiziens arbusculaires. Les paramètres de croissance ont été mesurés à 30 et 60 jours après semis. La biomasse aérienne, racinaire et totale a été évaluée à 60 jours après semis. Les résultats montrent une amélioration de la croissance en hauteur du mucuna de 225,76%, de la biomasse aérienne de 56,79%, la biomasse racinaire de 70% et la biomasse totale de 61,16% par rapport au témoin non inoculé. Cette étude a montré des résultats intéressants et mérite d’être approfondie par des essais in situ tout en étendant l’étude sur les inoculations rhizobiennes.Mots clés : Mucuna, inoculation mycorhizienne, champignons mycorhiziens arbusculaires.   English Title: Effect of mycorrhizal inoculation with arbuscular mycorrhizal fungi strains on Mucuna pruriens (L.) DC growth under controlled conditionIn Burkina Faso, breeding occupies more than 80% of rural households and is the third export product after gold and cotton. Extensive type, this breeding is based essentially on the exploitation of natural resources. Thus, it must adapt to large seasonal and interannual variations in plant biomass and water resources. Climatic hazards, the extent and quality of pastures, as well as constraints make pastoral activity often precarious. Therefore, this study was initiated with the aim of helping to improve forage production. In this study, Mucuna pruriens was grown in a greenhouse and inoculated with two inocula of arbuscular mycorrhizal fungi. The growth parameters were measured at 30 and 60 days after sowing. Shoot, root and total biomass was evaluated at 60 days after sowing. The results show an improvement in the height growth of mucuna by 225.76%, shoot biomass by 56.79%, root biomass by 70% and total biomass by 61.16% compared to the control. This study showed interesting results and deserves to be deepened by in situ tests while extending the study of rhizobial inoculations. Keywords: Mucuna, mycorrhizal inoculation, arbuscular mycorrhizal fungi

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This work aims to fill a gap in knowledge of the Burkina Faso Southern Sudanese flora and vegetation. The woody vegetation of the forest park of the Scholl Complex in Léo comprises a total of 26 families, 63 genera and 81 species including native and introduced ones. The fallow is the unit that contains all families and genera and 93% of species. The most abundant species of units of the Park are Terminalia avicennioides (Combretaceae), Piliostigma thonningii (Fabaceae-Caesalpinioideae), Daniellia oliveri (Fabaceae-Caesalpinioideae), Vitellaria paradoxa (Sapotaceae), Detarium microcarpum (Fabaceae-Caesalpinioideae), Diospyros mespiliformis (Ebenaceae), Annona senegalensis (Annonaceae) and Pteleopsis suberosa (Combretaceae).The species that regenerate the most and that will ensure the sustainability of the peri-urban forest resources are Gardenia erubescens (Rubiaceae), Piliostigma reticulatum (Fabaceae-Caesalpinioideae), Vitellaria paradoxa, Annona senegalensis, Terminalia avicennioides (Combretaceae), Diospyros mespilifomis and Azadirachta indica (Meliaceae). The most threats on vegetation and flora of the School Complex are fraudulent human exploitation, parasitic pressure and progressive intrusion of Azadirachta indica.Peri-urban park resources conservation measures concern the replanting of vegetation in degraded areas and incentives for wood production for local populations. A management program for threatened or rare species, control of invasive alien plants and domestic animals and the development and improvement of habitat to create a future urban park.

This study evaluated the growth performance and the leaves type of seedlings from different morphotypes of Lannea microcarpa in the central plateau of Burkina Faso.Then, seeds of Lannea microcarpa were collected from four (4) morphotypes based on their botanical characters and noted as NLs: Lannea sp. from Naab-Mayooghin, MLs: from Mamousyorgo 1, MaLs: from Mamousyorgo2, ZLs: from Ziniaré. One hundred seeds per morphotypes were used for the seedlings production in nursery through sowing by using a randomized block design. The leaves type of the produced seedlings was investigated by visual observation. Significant differences in the growth traits of the seedlings were found among the four morphotypes (p < 0,05). The height and the collar diameter of the seedlings were found to be higher in NLs, MaLs and ZLs than those in MLs. Regarding the leaves, it was observed different types among the morphotypes. Seeds from NLs and MLs produced seedlings with both compound and simple leaves while those from ZLs and MaLs produced seedlings with only compound leaves. Generally, all morphotypes exhibited a relatively high growth with production of different types of leaves.

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Vitellaria paradoxa is a multipurpose plant species which unfortunately is under multiple pressures causing damages to the plant. This study was to develop methods for monitoring causative agents of shea trees leaf spots in Burkina Faso. An inventory of shea tree individuals and a characterization of leaf spots were performed in Tampoussoumdi, Burkina Faso. Thus, twelve (12) plots of 100 m x 50 m were set up in fallows and fields for identifying all shea trees. Pathogens were also identified by isolated infected leaves fragments of on PDA medium. Isolates were purified and observed under a microscope (X40). As to develop pathogens monitoring methods, three mycorrhizal fungi (yac, fada, Ga) were used to inoculate shea trees cultivated in greenhouse. After two months, inoculated plant leaves were sprayed with prepared isolates of identified pathogens and infection occurrence was checked daily. Results revealed that infection occurred only in unburned fallows and concerned 65% of the shea tree communities. Fungi were found to be responsible for these infections and three species were identified including Fusarium moniliforme, Pestalotia guepini and Phoma sorghina. Results also showed that mycorrhizae can inhibit pathogens growth partially or totally. Their potential use could help controlling the leaf spots disease in shea parks.