نتایج جستجو برای: soil conservation technologies

تعداد نتایج: 475511  

2013
Neeraj Singh B. Singh Ashok Rai

Puddling doesn’t have much influence on rice yields. Many changes and innovations have contributed to the expanding use of resource conserving technologies in the country. One of the most important has been the development, testing and marketing of a low cost seed-cum-fertilizer drill which can establish crops with a minimum of soil disturbance, can take best advantage of residual soil moisture...

Journal: :Journal of Agricultural and Applied Economics 1989

Journal: :BIO web of conferences 2023

The article presents data of research on conservation and improvement soil fertility using precision farming technologies. study was carried out under conditions humid climate (North-West Russia, Leningrad region). Technologies for differentiated application nitrogen fertilizers were tested in the fields Agrophysical Research Institute. In comparison with high-intensity agricultural technologie...

Journal: :Anais da Academia Brasileira de Ciencias 2006
Suzi H Theodoro Othon H Leonardos

During the second half of the 20th century, the introduction of new chemical agriculture technologies brought about a revolution in food production, but this has also cause deep deterioration in our relationships with the natural environment. In developing tropical countries, record yields were accompanied by rural exodus, widespread deforestation and loss of topsoil. The stonemeal research des...

During the last decade, the expansion of urbanization and industrial activities caused serious environmental problems such as soil pollution. Novel technologies are required to remediate soil contamination with toxic contaminants, including heavy metals and organic pollutants. In recent years, there have been increasing attempts to improve soil remediation efficiency. Electrokinetic (EK) is an ...

2001
K. Kellner

The biophysical environment is an important determinant of land degradation in both commercial and communal land tenure systems in South Africa. According to a recent study on the status of land degradation, approximately 25% of the total land cover in South Africa is degraded. Several technologies exist to restore the soil and vegetation degraded areas in natural pastures. To improve the produ...

2012
Andrew Price Robert Wilson Phillip W. Stahlman

Tillage has been an integral part of crop production since crops were first cultivated. Growers and scientists have long recognized both beneficial and detrimental aspects of tillage. There is no question that most tillage operations promote soil loss, adversely affect (lower) surface water quality, and negatively impact soil productivity. Weed management is a primary reason for tillage, and un...

2002
Wang Guoqing

Taking the two typical tributaries in the loess plateau as an example, the hydrological effects of water and soil conservation measures were studied with parallel comparative analysis method. The results show that water and soil conservation measures can reduce annual runoff and sediment module, cut down flood peak discharge and lower sediment concentration efficiently. And meanwhile, it also c...

Journal: :Journal of environmental management 2015
Lingling Hou Dana L K Hoag Catherine M H Keske

This study proposes the use of marginal abatement cost curves to calculate environmental damages of agricultural systems in China's Loess Plateau. Total system costs and revenues, management characteristics and pollution attributes are imputed into a directional output distance function, which is then used to determine shadow prices and abatement cost curves for soil and nitrogen loss. Marginal...

2010
Jack A. Morgan Ronald F. Follett Leon Hartwell Stephen Del Grosso Justin D. Derner Feike Dijkstra Alan Franzluebbers Robert Fry Keith Paustian Michele M. Schoeneberger

Jack A. Morgan is plant physiologist and Feike Dijkstra is post-doc research ecologist at the Rangeland Resources Research Unit, Ronald F. Follett is research leader and soil scientist and Stephen Del Grosso is a soil scientist and ecologist at the Soil Plant Nutrient Research Unit, USDA Agricultural Research Service Northern Plains Area, Fort Collins, Colorado. Leon Hartwell Allen Jr. is soil ...

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