نتایج جستجو برای: soil conservation

تعداد نتایج: 276482  

2009
Shengping Wang Zhiqiang Zhang Ge Sun Steven G. McNulty Manliang Zhang

Soil conservation practices have been widely implemented on the Loess Plateau to reduce severe soil erosion in north-central China over the past three decades. However, the hydrologic impacts of these practices are not well documented and understood. The objective of this study was to examine how water yield has changed after implementing soil conservation practices that resulted in changes in ...

2015
N. N. Cheng H. M. He Y. J. Lu S. Y. Yang

1State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling, Shaanxi 712100, China 2University of Chinese Academy of Sciences, Beijing 100049, China 3Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China 4Department of Forestry, Mississippi State University, Starkvil...

Journal: :Pest management science 2008
Martin A Locke Robert M Zablotowicz Krishna N Reddy

BACKGROUND Conservation practices often associated with glyphosate-resistant crops, e.g. limited tillage and crop cover, improve soil conditions, but only limited research has evaluated their effects on soil in combination with glyphosate-resistant crops. It is assumed that conservation practices have similar benefits to soil whether or not glyphosate-resistant crops are used. This paper review...

2011
A. J. Price K. S. Balkcom S. A. Culpepper J. A. Kelton R. L. Nichols H. Schomberg

Conservation tillage reduces the physical movement of soil to the minimum required for crop establishment and production. When consistently practiced as a soil and crop management system, it greatly reduces soil erosion and is recognized for the potential to improve soil quality and water conservation and plant available water. Adoption of conservation tillage increased dramatically with the ad...

2012
Ali Akbar Jamali

This paper discusses site selection process for biological soil conservation planning. It was supported by a valuefocused approach and spatial multi-criteria evaluation techniques. A first set of spatial criteria was used to design a number of potential sites. Next, a new set of spatial and non-spatial criteria was employed, including the natural factors and the financial costs, together with t...

2009
R. López-Garrido A. Díaz-Espejo E. Madejón J. M. Murillo F. Moreno

Conservation tillage has been promoted as a solution to counteract constraints caused by intensive agriculture. In this work the effects of two conservation tillage systems, reduced tillage (RT) and no-tillage (NT) were compared to the traditional tillage (TT) in a long(15 years, RT) and short-term experiment (3 years, NT). Both experiments were carried out under semi-arid, rainfed agriculture ...

2002
V. A. Saladino

Introduction Conservation tillage has been one of the most rapidly adopted agricultural practices of the past 15 years (CTIC, 1983). The primary impetus for conservation tillage has been decreased soil erosion; fuel, labor, and machinery costs; and increased soil water storage and yields (USDA, 1975). Conservation tillage may be broad­ ly defined as tillage practices that reduce soil and water ...

Runoff assessment and estimation is crucial for watershed management as it provides information that is needed to expedite the course of watershed planning and development. The most commonly used model due to its simplicity and versatility in runoff estimation is the soil conservation service curve number developed by the United States Department of Agriculture. The study estimates the surface ...

2001
Jeannette Espinoza Subhrendu Pattanayak Erin Sills

We illustrate a strategy for valuation of forest ecosystem services by studying the demand for its weak complement, agricultural labor –a commodity that has market prices. In our case study forest protection in Ruteng Park of Flores, Indonesia, provides soil conservation benefits to farmers living near the protected area. Econometric analyses of forest hydrology and household data shows that so...

2004
Swagata “Ban” Banerjee Steven W. Martin Roland K. Roberts James A. Larson Robert J. Hogan Jason L. Johnson Kenneth W. Paxton Jeanne M. Reeves

The Natural Resources Conservation Service (NRCS) defines conservation tillage as a tillage system that leaves enough crop residue to adequately protect the soil from erosion throughout the year. The percent of cover required varies by field according to soil type, slope, crop rotation, winter cover crops used and other factors (NRCS website). Conservation tillage in general and notill practice...

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