Dans les communes rurales de Tondikandia et d’Imanan situees dans le departement de Filingue lui-meme rattache a la region de Tillaberi, il existe des mares permanentes dont les eaux sont sous exploitees du fait de la meconnaissance des sols pour une bonne production de riz autour de ces mares. Notre travail a ete realise au cours de la saison d’hivernage 2015 avec comme objectif de caracteriser les sols de sites de Guille Koira et de Lassourou situes dans ces deux communes rurales pour mieux pratiquer la culture de riz. Pour se faire, des prelevements des echantillons du sol ont ete effectues au niveau des fosses pedologiques prealablement decrites au niveau des sites concernes. Ces echantillons ont ete analyses. Des principaux resultats obtenus, on retiendra que les sols utilises ont des caracteristiques physico-chimiques differentes. A Guille koira, le pH est acide sur les premiers horizons. Cette acidite (5,05) depasse 5,5 valeur en dessous de laquelle la presence de l’aluminium echangeable presente des risques de toxicites aluminiques. A Lassourou, L’analyse chimique a revele un pH basique dans les horizons de surface. Le pH (9,2) et la conductivite electrique (CE =75) d’une part et la predominance de la texture grossiere en surface d’autre part sont des facteurs prejudiciables a la riziculture. En conclusion on peut retenir que la riziculture est possible a Guille Koira et Lassourou. Cependant a Lassourou, des amendements notamment l’apport d’eau regulier en periode de poche de secheresse, l’utilisation rationnelle de gypse, de fumure organique et des varietes tolerantes a la salinite de sol permettront d’obtenir une bonne production du riz en saison des pluies. © 2018 International Formulae Group. All rights reserved. Mots cles: Niger, caracterisation, sols, riziculture autour des mares, pH, CE English Title: Soils characterization of Guille Koira and Lassourou in the rural communes of Imanan and Tondikandia in Niger for better rice production around the pools English Abstract In the rural communes of Tondikandia and Imanan located in the department of Filingue itself attached to the Tillaberi region, there exist permanent ponds whose water is under exploited due to the lack of knowledge of the soils for a good rice production around these ponds. Our work was realized during the wintering season of 2015 with a goal to characterize the soils of Guille Koira and Lassourou located in these two rural communes to better practice the production of rice. To start with, selections of soils samples were carried out on the pedological pits described beforehand on the level of the concerned sites. These samples were analyzed. From the principal results obtained, it will be retained that the used soils have different physicochemical characteristics. In Guille koira, the pH is acid on the first horizons. This acidity (5.05) exceeds 5.5 value below which the presence of exchangeable aluminium presents the aluminic toxicities risks. In Lassourou, the chemical analysis revealed a basic pH in the surface horizons. The pH (9.2) and electric conductivity (EC = 75) on the one hand, the predominance of coarse texture on the surface on the other hand are prejudicial factors to the rice production. In conclusion we can retain that rice growing is possible in Guille Koira and Lassourou. However, in Lassourou, some amendments in particular the bringing of regular supply of water during the period of dry pockets, the rational use of gypsum, organic fertilizer and the tolerant varieties to the soil salinity will allow to obtain a good production of rice in rainy season. © 2018 International Formulae Group. All rights reserved. Keywords: Niger, characterization, soils, rice growing around the pools, pH, EC
Caractérisation des sols de Guillé Koira et Lassourou dans les communes rurales d’Imanan et Tondikandia au Niger pour une meilleure culture de riz autour des mares
A. S. Yacouba,Guero Yadji,M. M. Tchicama,Nourou Abdourahamane Issa
Published 2019 in International Journal of Biological and Chemical Sciences
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2019
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International Journal of Biological and Chemical Sciences
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2019-02-22
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Environmental Science
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