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Showing 1 to 20 of 78 for “"soil loss"”.
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Optimal Soil Loss Over Time From a Societal Viewpoint
Made available in DSpace on 2014-12-13T19:23:22Z (GMT). No. of bitstreams: 1 7803994.pdf: 6176317 bytes, checksum: 9448d4e916f39cc531d1a191e9c6687f (MD5) Previous issue date: 1977
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A study of the practicability of the photometer method in making soil loss measurements
… device for measuring light absorption by turbid soil and water solutions when the soil particles are of nearly constant size. The tests made with the soil that had passed through a 100-mess sieve proved this fact, also, the tests made with the composite soil gave vary accurate results. (2) the …
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Evaluation of the universal soil loss equation on a selected reclaimed eastern surface mine area
… evaluate the the predictability of the Universal Soil Loss Equation for a selected eastern surface mine spoil. Comparison of predicted and measured soil losses indicated significant error. For slopes greater than 20% the equation overpredicted for all predictions. Predictions for erosion losses …
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Sustainable development in Honduras: economic evaluation of soil conservation practices
… with erosion reduction and adoption of soil conservation practices for a representative farm in a watershed in Honduras are examined in a linear programming framework. Special attention is paid to income-soil loss tradeoffs, income-risk tradeoffs, and on the effect of different farmers' …
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Analysis of Soil Splash Erosion Under Simulated Rainfall
… on the regression results, required to initiate soil splash, was dependent upon soil type, with greater clay content soils exhibiting a greater threshold energy. Soil splash rate increased with increasing kinetic energy, with large differences between soils. Soil loss decreased with an increasing …
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Análise espacial das perdas de solo no Estado da Paraíba
This study aimed to analyze the soil losses in the state of Paraiba. To study soil loss equation was used to Universal Soil Loss - USLE coupled to an Information System GIS geographically. By multiplying factors K, R, LS, C and P, were necessary data such as time series of rainfall, soil map, …
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Cross-compliance as a soil conservation strategy: a case study of the North Fork of the Forked Deer River basin in western Tennessee
… present erosion rates, with the Universal Soil Loss Equation. Costs which farmers could expect to incur in order to achieve each of the four soil loss limits were then determined using standard budgetary techniques. These discounted costs were then compared with discounted expected program …
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Soil conservation in relation to maize productivity on sub-tropical red soils in Yunnan Province, China
… land in China is being degraded, with soil erosion becoming an increasing problem. In Yunnan Province, south-west China, there is a long history of soil erosion due to soil type, climate, anthropogenic influence and because 95% of the Province is mountainous. Population pressure and …
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Effect of dry wheat straw mulching and cowpea-maize intercropping on soil erosion and maize yield in Zambia
… along with complementary practices such as soil cover and crop diversity has become a better option to ensure sustainable food production and maintenance of environmental sustainability. A field study was conducted to evaluate the effect of dry wheat straw mulching and cowpea-maize …
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Characterization of Watersheds on Fort Benning Military Reservation: Comparison of Field Data to Watershed Parameters
… to physical data. Land use, slope, and soil data were used in a modified revised universal soil loss equation (RUSLE) to create a soil erodibility index map. Wolman Pebble Count data showed that in half of the watersheds, 84% of the sampled grains were less than half a millimeter in …
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Sustainable use of soil resource base in the Dominican Republic:a farm level economic analysis of soil conservation practices
… policies on the farmer's ability to conserve soil are examined. Results indicate that income losses will be substantial when complying with soil loss standards without introducing soil conservation practices. Net income reduction of 36% can be expected with a reduction in soil loss by 50%. …
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Análise do risco à erosão do solo no município de Lucena - Paraíba.
… that occur in all environments, but the risk of soil destruction in Brazilian regions is very high due to the susceptibility of Brazilian soils to erosion. The soil loss in Brazil are derived from factors external geodynamics of the Earth, such as floods and floods, landslides of soil and / or …
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Using Arbuscular Mycorrhizae to Influence Yield, Available Soil Nutrients and Soil Quality in Conventional VS. Organic Vegetable Production
… if mycorrhizae improve yield, available soil nutrients and soil quality from two different fertilizer sources. Measurements were taken on yield, available soil nutrients, and soil quality in comparison of glomalin production and soil loss percentage. Two plant species were chosen, …
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INTEGRATED WATER RESOURCES ASSESSMENT AND MANAGEMENT IN A DROUGHT-PRONE WATERSHED IN THE ETHIOPIAN HIGHLANDS
… An on-farm study tested effectiveness of subsoiling, open and tied ridges, no till, and conventional maresha tillage to mitigate impact of dry spells on crops and to protect the soil. Tillage performance varied with seasonal rainfall distribution and intensity and land gradient. Ridges …
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The Effects of Stream Crossings and Associated Road Approaches on Water Quality in the Virginia Piedmont
… (WEPP) and the forest version of the Universal Soil Loss Equation (USLE). In-stream water samples were collected at fixed locations above and below each crossing and were evaluated for total dissolved solids (TDS), pH, conductivity, water temperature, and total suspended solids (TSS) or sediment …
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Climate change effects on land degradation and agriculture in the Swartland, South Africa
… terrain and a history of land degradation and soil erosion. This thesis therefore considers how future climate change may impact on soil loss in such a climatically sensitive region of central economic significance for southern Africa.
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Soil degradation: Its aspects and modelling
… region, Sudan. In order to investigate the soil degradation aspects in the study area, its causal, rate per time and mapping; the remote sensing and GIS technologies were used beside the routine soil survey and laboratory analyses. Quantitative information on soils degradation and vegetation …
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Risk Analysis of Adopting Conservation Practices on a Representative Peanut-Cotton Farm in Virginia
… pesticide, nitrogen, phosphorus, and sediment losses of a representative risk-neutral and risk-averse peanut-cotton farmer in Southeast Virginia. Five currently popular rotations and eight alternative conservation rotations are evaluated for the representative farm. The Erosion-Productivity …
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The effect of catchment land use on sediment input to Swartvlei
… the extent of accelerated runoff and sediment loss in different rainfall conditions were determined. Rainfall, water flow, Secchi disc and sediment load data are reviewed and the apparent relationship between them noted. Water samples were collected at 32 different sample sites to determine …
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