This study consists of using the cocoa bean teguments as a means of sustainable production growth and environmental preservation. It aims to characterize the effects of the teguments on the chemical properties of a Ferralsol in Ahoué (Côte d'Ivoire). In an experimental block design of Fisher, three treatments of Cocoa bean teguments: T1 (10 t.ha-1), T2 (15 t.ha-1), T3 (20 t.ha-1) and one Control T0 have been set up with four repetitions. The main results show that the contribution of cocoa bean teguments has a positive effect on all the characteristics studied. The values obtained of the pH of the T0 and the T1, T2, T3 indicates, respectively 4.2; 5.4; 5.5 and 5.8. As regards the contents of the CEC, the values obtained give: 2.32; 7.2; 11.44 and 12.5 cmol.kg-1, respectively, for T0, T1, T2 and T3 treatments. As for the organic matter, the contents obtained indicate the following values: T0 = 12.56 g.kg-1; T1 = 26.49 g.kg-1; T2 = 35.09 g.kg-1 and T3 = 38.08 g.kg-1. The data corresponding to the sum of the captions oscillated between 4.5 and 10.5 cmol.kg-1 according to the treatments.
1A study of the physico chemical properties of gleyic Luvisols and gleyic Histosols was carried on in Nieki Valley, a vegetable crops production area in South-East of Côte d'Ivoire. Soil samples were collected at different depths (0-15 cm and 15-40 cm) on each of the sites studied for laboratory analysis. The results obtained of physical analysis show that the texture of soil is generally less thin and essentially provided in heavy clays. The observed average values of the index of crusting and the ability to cracking show that soils are not crusting and have an excellent ability to cracking. The results of physical analysis also show that the soils have an index of structural stability that change from very stable to stable and a very high risk of asphyxiation. Results of chemical analysis reveal that the pH values increased with soil depth and are higher in field soils than in control soils. Moreover, organic matter in soils studied is more abundant in surface horizons and decreases with depth. However, the contents of calcium, magnesium and potassium are lower in the surface horizons and increase with depth.
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