Infiltration Characteristics of Soils in Owerri, Imo State, Southeastern Nigeria under Four Selected Land Uses

Knowledge of the infiltration characteristics of soils could play a significant role in the choice of appropriate soil management practices that is capable of alleviating the production constraints of soils. The infiltration characteristics of soils in Owerri under four different lands uses viz: secondary forest, plantain plantation, continuously cultivated land and the grazing land was investigated with the aid of a double ring infiltrometer. Results showed that the secondary forest, plantain plantation, continuously cultivated land, as well as the grazing land all, recorded low infiltration rates of 26.54 mm/hr, 26.0 mm/hr, 18.87/hr and 21.35 mm/hr respectively. There were also significant differences in the soil physical and chemical properties notably the hydraulic conductivity, bulk density, water content, organic matter, total nitrogen, as well as available phosphorus (P<0.05). The results obtained suggest that the inherent land uses in the area affected the infiltration of water as well as the soil quality indices. Land use practices that will improve the organic matter, as well as the water transmissivity of the soils such as conservation tillage, fallowing and controlled grazing, should be adopted and sustained.