ABSTRACT
A study was carried out after harvest of rabi season crop during 2020-2021 to find out the vertical variability in status of physical properties in Vertisol and Inceptisol under different land uses. Samples were collected in triplicate from six different land use practices (forest, uncultivated, soybean-wheat, rice-wheat, soybean - chickpea and maize-wheat) at four depths (0-15, 15-30 30-45 and 45-60 cm) Gwalior and Jabalpur regions. For statistical analysis of data in factorial RBD different soil type were considered as factor A ,land use practices as factor B and three replications. Physical properties significantly affected by soil type. It was observed in different land use practices significantly affected in WHC. Under different soil type content of sand, silt and bulk density were higher in Inceptisol as compared to vertisol, however content of clay, porosity and (water holding capacity) WHC were higher Vertisol as compare to Inceptisol. WHC, bulk density and clay was found increased down the depth except porosity, sand in Vertisol while content of sand and bulk density was found increased down to depth except WHC, porosity and clay in Inceptisol.
ABSTRACT
El mayor y mejor uso de las tierras en El Estor, Izabal, está determinado por los regímenes de precipitación, topografía y manejo de los suelos. La erosión es el principal proceso de degradación de los suelos en esta región del país, por lo que se evaluó el efecto de diferentes usos de la tierra sobre la erosión y sedimentación media. Se utilizó el método de las varillas de erosión para estimar las variables primarias de erosión y sedimentación media; y posteriormente, las variables derivadas erosión neta y movilidad del suelo, durante los meses de febrero a noviembre del año 2014. Los resultados de los valores de erosión media y movilidad del suelo en plantaciones de hule y tierra en barbecho presentaron relaciones directas r = 0.63 y r = 0.77 respectivamente. Los valores de sedimentación media y movilidad del suelo en bosque secundario y tierra en barbecho presentaron relaciones inversas r = -0.88 y r = -0.79 respectivamente, en ambos casos con 5% de significancia. Además, los resultados del análisis estadístico de la evaluación experimental del uso de la tierra sobre las variables de respuesta, indicaron efecto del uso de la tierra sobre la erosión media de los suelos en la época lluviosa, con 5% de significancia. En su orden, las plantaciones de hule, tierra en barbecho, agricultura anual y bosque secundario, causaron mayor erosión del suelo. Se concluyó que las plantaciones de hule causaron tasas de erosión del doble en relación a las reportadas en el bosque secundario.
The mayor and best land use in El Estor, Izabal is determined by rainfall patterns, topography and soil management. The erosion is the main process of soil degradation in this region, so the effect of different land uses on mean soil erosion and sedimentation were evaluated. The method of erosion rods was used to estimate the mean soil erosion and sedimentation, as primary variables, and then the resulting net soil erosion and soil mobility, as secondary variables, during the months of February to November 2014. The results of mean values of soil erosion and soil mobility in rubber plantations and fallow land had direct relations r = 0.63 and r = 0.77 respectively. The mean values of sedimentation and soil mobility in secondary forest and fallow land had inverse relationships r = -0.88 and r = -0.79 respectively, both with 5% significance. In addition, the statistical analysis of the experimental evaluation of the land use effect on the response variables, indicated effect of land use on mean soil erosion during the rainy season, with 5% significance. In its order, the rubber plantations, fallow land, agriculture and secondary forest causing increased soil erosion. It was concluded that rubber plantations caused double erosion rate compared to those reported in the secondary forest.