Erosion in Andean Hillside Farming

About this book

Characterization and reduction of soil erosion by water in small scale cassava cropping systems in the Southern Central Cordillera of Colombia.

Contents

Part 1 Known causes of rainfall erosion and definition of the problems: causes and characteristics of rainfall erosion in the tropics - the erosivity of the climate, soil erodibility, relief, land use, measures of erosion control; the problem of soil erosion in Colombia; research objectives and hypothesis. Part 2 Material and methods: location and ecological condition of the study area - climate and vegetation, geology, geomorphology, soils, landuse systems; layout of field experiments and treatments; observations, measurements and data collection - precipitation and other climatic factors, soil and runoff, agronomic practices and measurements; application of the Universal Soil Loss Equation (method of Wischmeier and Smith). Part 3 Results and discussion: processes of soil erosion in selected cropping systems with cassava - sopils of the study area, soil loss and cropping system, changes of selected physical and chemical soil properties during the test period, losses of organic matter and nutrients, yields of traditional and improved cassava cropping systems; applicability of the Universal Soil Loss Equation under the conditions of the study area.

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