Volume 25, Issue 2, July 2016, Pages 620–627
BALLO Coffi Ignace Ignace1, Toffi D. Dossou Mathias2, and Attanda Mouinou Igué3
1 Université d'Abomey-Calavi, Benin
2 Université d'Abomey-Calavi, Benin
3 Université d'Abomey-Calavi, Benin
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Following pressure from humans on environmental resources, the growing areas have become saturated in the Adja plateau. The destruction of vegetation cover; the adoption of cultivation technology based on the use of agricultural inputs, land use continues restless and regression of fallow are causing land degradation. To raise public awareness on this issue, research and soil samples from 09 test results collected by the different characteristics of plant cover, allowed to assess the extent of soil degradation phenomenon. The analysis of the samples allowed to note that the land under crops have Organic Matter of contents (M.O) below 2%; which is an average and severe limitation for agricultural development. Only 02 out of 09 samples taken in soil or planting area of swamp forest with values higher M.O 2%. Nitrogen rates in being similar to those of M.O, the corresponding content is not up to standard. They vary from 0.07 to 0.08% for 07 soil samples. PH values that are below 6 for most samples do not represent a good condition of agricultural production. 07 soil samples have medium to severe limitation to phosphorus. By cons, most soils show no limitation Potassium. As to the sum of the bases, the soils are middle class to severe limitation. The cationic exchange capacity is low for these soils. In light of these results, it is appropriate to adopt cropping systems that are in line with this classification hope for better returns. But, plantations and fallow are given for the reconstitution of the production potential of these soils.
Author Keywords: Adja try, degradation, pressure.
BALLO Coffi Ignace Ignace1, Toffi D. Dossou Mathias2, and Attanda Mouinou Igué3
1 Université d'Abomey-Calavi, Benin
2 Université d'Abomey-Calavi, Benin
3 Université d'Abomey-Calavi, Benin
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Following pressure from humans on environmental resources, the growing areas have become saturated in the Adja plateau. The destruction of vegetation cover; the adoption of cultivation technology based on the use of agricultural inputs, land use continues restless and regression of fallow are causing land degradation. To raise public awareness on this issue, research and soil samples from 09 test results collected by the different characteristics of plant cover, allowed to assess the extent of soil degradation phenomenon. The analysis of the samples allowed to note that the land under crops have Organic Matter of contents (M.O) below 2%; which is an average and severe limitation for agricultural development. Only 02 out of 09 samples taken in soil or planting area of swamp forest with values higher M.O 2%. Nitrogen rates in being similar to those of M.O, the corresponding content is not up to standard. They vary from 0.07 to 0.08% for 07 soil samples. PH values that are below 6 for most samples do not represent a good condition of agricultural production. 07 soil samples have medium to severe limitation to phosphorus. By cons, most soils show no limitation Potassium. As to the sum of the bases, the soils are middle class to severe limitation. The cationic exchange capacity is low for these soils. In light of these results, it is appropriate to adopt cropping systems that are in line with this classification hope for better returns. But, plantations and fallow are given for the reconstitution of the production potential of these soils.
Author Keywords: Adja try, degradation, pressure.
Abstract: (french)
Suite à la pression de l’homme sur les ressources de l’environnement, les espaces de culture sont devenues saturés sur le plateau Adja. La destruction de la couverture végétale ; l’adoption de techniques culturale basée sur l’utilisation des intrants agricoles, l’exploitation des terres en continue sans repos et la régression de la jachère sont à l’origine de la dégradation des sols. Pour sensibiliser l’opinion publique sur cette question, les recherches menées et les résultats d’analyse de 09 échantillons de sols prélevés selon les différentes caractéristiques de la couverture végétale, ont permis d’apprécier l’ampleur du phénomène de dégradation des sols. L’analyse des échantillons prélevés a permis de noter que les sols sous cultures présentent des teneurs de Matières Organiques (M.O) inférieurs à 2% ; ce qui constitue une limitation moyenne et sévère pour le développement agricole. Seuls 02 échantillons de sol sur 09 prélevés en zone de plantation ou de forêts marécageuses présentent des teneurs de M.O supérieurs à 2%. Les taux en Azote étant similaires à ceux du M.O, les teneurs correspondants ne sont pas conformes aux normes. Ils varient de 0,07 à 0,08% pour 07 échantillons de sol. Les valeurs de pH qui sont inférieurs à 6 pour la plupart des échantillons ne représentent pas de bonne condition de production agricole. 07 échantillons de sols présentent de limitation moyenne à sévère au phosphore. Par contre, les sols en majorité ne présentent pas de limitation au Potassium. Quant à la somme des bases, les sols présentent de limitation de classe moyenne à sévère. Les capacités d’échange cationiques sont faibles pour ces sols. A la lumière de ces résultats, il convient d’adopter des systèmes de cultures qui soient en adéquation avec cette classification pour espérer de rendements meilleurs. Mais, les plantations et la mise en jachère sont indiquées pour la reconstitution du potentiel de production de ces sols.
Author Keywords: plateau adja, dégradation, pression.
How to Cite this Article
BALLO Coffi Ignace Ignace, Toffi D. Dossou Mathias, and Attanda Mouinou Igué, “Dégradation des terres sur le plateau adja au Sud-ouest du Bénin,” International Journal of Innovation and Scientific Research, vol. 25, no. 2, pp. 620–627, July 2016.
