Like several Sahelian countries, Senegal is facing a strong degradation of woody and arable resources. This is due to the development of certain inappropriate agricultural practices. To mitigate this situation, the po...Like several Sahelian countries, Senegal is facing a strong degradation of woody and arable resources. This is due to the development of certain inappropriate agricultural practices. To mitigate this situation, the populations tend to preserve and maintain certain woody species of interest in the fields, thus constituting agroforestry parks. Thus, the objective of this study was to contribute to a better understanding of the characteristics of woody vegetation in agroforestry parks in the department of Bignona. To this end, a plot of 2500 m<sup>2</sup> (50 m × 50 m) was installed in the fields of each farmer selected in a sample of 99 farm managers distributed in the three communes (Djinaky, Kataba1 and Kafountine) of the Kataba1 district, for a total of 99 plots installed. A total of seventy-three (73) species divided into fifty-five (55) genera and twenty-eight (27) botanical families were inventoried. In the agroforestry parks of the Kataba 1 district, the density of woody vegetation is 56.12 individuals/ha, the cover rate is 27.9% and the basal area is 5.9 m<sup>2</sup>/ha. The vertical structure of the woody vegetation is characterized by a predominance of individuals between 2 and 4 m in height (48.07%). As for the horizontal structure, it is characterized by a predominance of individuals of diameter between 5 and 20 cm (39.19%). These results obtained will serve as a source of information for better management of these agroforestry parks by the populations.展开更多
In Lower Casamance, <i>Pterocarpus erinaceus</i> occupies a very important place in agroforestry parks. It is often grown in association with the most important cash crop of the area, groundnut <i>(A...In Lower Casamance, <i>Pterocarpus erinaceus</i> occupies a very important place in agroforestry parks. It is often grown in association with the most important cash crop of the area, groundnut <i>(Arachis hypogea L.).</i> Thus, the objective of this study is to contribute to a better understanding of the interactions between trees and groundnut cultivation in agroforestry parks in Lower Casamance. To this end, in each of the two districts (Tenghory and Kataba 1) three <i>Pterocarpus erinaceus</i> trees were selected in three separate communes. For each <i>P. erinaceus</i> tree selected and following each of the four cardinal directions, three situations were defined: at R/2, at 1.5 R and at 2 R from the trunk, with R the radius of the crown. Thus, 12 yield squares were installed around each selected tree, for a total of 72 yield squares installed in the two districts. The parameters measured were the height of the peanut plants, the number of pods produced per plant, and the yield in flakes and pods. The results show that geographical orientation significantly influenced plant height (p = 0.004) but not the number of pods/plant (p = 0.6). As for the distance to the trunk of <i>Pterocarpus erinaceus</i>, it induced a significant variation in the number of pods/plant (p = 0.009) but did not induce a significant effect on the other parameters. Yields varied between 1.56 Tons M S /ha and 2.02 Tons M S /ha for the hay, and between 1.03 Tons M S /ha and 1.45 Tons M S/ha for the pods. The results of this study constitute a useful source of information for a better management of the productivity of the agroforestry parks of the department of Bignona.展开更多
文摘Like several Sahelian countries, Senegal is facing a strong degradation of woody and arable resources. This is due to the development of certain inappropriate agricultural practices. To mitigate this situation, the populations tend to preserve and maintain certain woody species of interest in the fields, thus constituting agroforestry parks. Thus, the objective of this study was to contribute to a better understanding of the characteristics of woody vegetation in agroforestry parks in the department of Bignona. To this end, a plot of 2500 m<sup>2</sup> (50 m × 50 m) was installed in the fields of each farmer selected in a sample of 99 farm managers distributed in the three communes (Djinaky, Kataba1 and Kafountine) of the Kataba1 district, for a total of 99 plots installed. A total of seventy-three (73) species divided into fifty-five (55) genera and twenty-eight (27) botanical families were inventoried. In the agroforestry parks of the Kataba 1 district, the density of woody vegetation is 56.12 individuals/ha, the cover rate is 27.9% and the basal area is 5.9 m<sup>2</sup>/ha. The vertical structure of the woody vegetation is characterized by a predominance of individuals between 2 and 4 m in height (48.07%). As for the horizontal structure, it is characterized by a predominance of individuals of diameter between 5 and 20 cm (39.19%). These results obtained will serve as a source of information for better management of these agroforestry parks by the populations.
文摘In Lower Casamance, <i>Pterocarpus erinaceus</i> occupies a very important place in agroforestry parks. It is often grown in association with the most important cash crop of the area, groundnut <i>(Arachis hypogea L.).</i> Thus, the objective of this study is to contribute to a better understanding of the interactions between trees and groundnut cultivation in agroforestry parks in Lower Casamance. To this end, in each of the two districts (Tenghory and Kataba 1) three <i>Pterocarpus erinaceus</i> trees were selected in three separate communes. For each <i>P. erinaceus</i> tree selected and following each of the four cardinal directions, three situations were defined: at R/2, at 1.5 R and at 2 R from the trunk, with R the radius of the crown. Thus, 12 yield squares were installed around each selected tree, for a total of 72 yield squares installed in the two districts. The parameters measured were the height of the peanut plants, the number of pods produced per plant, and the yield in flakes and pods. The results show that geographical orientation significantly influenced plant height (p = 0.004) but not the number of pods/plant (p = 0.6). As for the distance to the trunk of <i>Pterocarpus erinaceus</i>, it induced a significant variation in the number of pods/plant (p = 0.009) but did not induce a significant effect on the other parameters. Yields varied between 1.56 Tons M S /ha and 2.02 Tons M S /ha for the hay, and between 1.03 Tons M S /ha and 1.45 Tons M S/ha for the pods. The results of this study constitute a useful source of information for a better management of the productivity of the agroforestry parks of the department of Bignona.
