نتایج جستجو برای: soil conservation practices scp
تعداد نتایج: 452527 فیلتر نتایج به سال:
A field study was conducted to assess the effects of soil tillage practices and straw management on soil CO2, and yield-scaled CO2 emissions in a rain-fed summer corn field on the Loess Plateau. Tillage treatments consisted of sub-soiling tillage (CP), no tillage (NT) and moldboard plow tillage (CT). Wheat straw was removed from half of the CP, NT and CT plots after harvest, allowing us to test...
The diversity of microbial communities constitutes a critical component of good soil-management practices. To characterize the effects of different management practices, molecular indicators such as phospholipid fatty acid (PLFA), denaturing gradient gel electrophoresis (DGGE) and composition of ammonia-oxidizing bacteria were used to analyze bacterial community structure and diversity from fou...
Cropping practices have a great potential to improve soil quality through changes in biota. Yet the effects of these soil-improving cropping systems on fungal communities are not well known. Here, we analysed using standardized measurements 12 long-term experiments and 20 agricultural treatments across Europe. We were interested whether same (i.e., tillage, fertilization, organic amendments cov...
Soil conservation is threatened by a number of factors, namely the effects of intensive agricultural practices, the increasing pressure for food production linked to the increasing human population, the consumption patterns in developed and emerging economies, and the conversion of agriculture from the production of commodities (which is itself a goal in need of discussion) to the production of...
increasing the concentrations and emissions of greenhouse gases makes the weather warmer and affects land uses. carbon dioxide emission is recognized as one of the most important factors in global warming. the objectives of this research were to investigate the amount of co2 emission from soil to atmosphere during the wheat growth under two different tillage and irrigation methods. in this stud...
lack of sufficient information on conservation tillage systems leads to the dominating use of conventional tillage practice in most parts of iran. testing other management practices may help in decision making regarding the types of tillage systems that reduce soil deterioration. a three- years field experiment was conducted to study the effects of conventional (ct), reduced (rt) and no-till (n...
Despite the importance of agriculture in California's Central Valley, the potential of alternative management practices to reduce soil greenhouse gas (GHG) emissions has been poorly studied in California. This study aims at (1) calibrating and validating DAYCENT, an ecosystem model, for conventional and alternative cropping systems in California's Central Valley, (2) estimating CO2, N2O, and CH...
This paper mainly focused on environmental awareness and practices related to various factors like causes of pollution, conservation of soil, forest, air, etc., energy conservation, conservation of human health, conservation of wild life and animal husbandry. It also discusses environmental practices among college students with regard to the usage of plastic and its disposal, alternative for pl...
This paper presents estimates of the benefits and costs of alternative soil conservation policies in a spatially and temporally consistent framework. The policies considered are implementation of soil conservation practices with an objective of reducing erosion to a site’s tolerance level and a policy with an objective of a voluntary 50% reduction in conventional tillage. Costs and erosion bene...
The existing empirical literature on farmers’ use of soil-conserving, runoff-reducing farming practices, while sizable, contains relatively little information on the influence of cost on adoption decisions and on how farmers combine multiple practices into an overall conservation package. Such knowledge is important in light of current interest in reorienting agricultural policy toward environm...
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