نتایج جستجو برای: agricultural soils
تعداد نتایج: 144345 فیلتر نتایج به سال:
The application of micronutrient supplements such as fertilizer, animal manure and sewage sludge in bid to enhance soil productivity and crop yield, poses the risk of heavy metals elevation and nutrients depletion in arable lands. Arable soils were collected from farmlands in use for the cultivation of food produce in selected farming communities in South Western Nigeria. The soils were air-dri...
the potential risk of metal accumulation in periurban agricultural areas is a matter for concern.the climate characteristics and carbonate content of calcareous agricultural mediterranean soils typical inthese areas favour metal accumulation at the surface level; however there is also a risk of potential metalmobility. our study focuses on the soil properties affecting metal mobility in these s...
Concentrations of As and selected metals were determined in surface soils of the Miyun Reservoir watershed of Beijing, China. The degree to which concentrations of As and metals exceeded the corresponding background concentration of soils was: Cr>Cu>Zn>As>Ni with no apparent anthropogenic contamination with Cd and Pb. Based on the results of a combination of multivariate statistics and geostati...
Soils of the Solonetzic Order account for about 7% of the agricultural land in Western Canada. They are most common in semi-arid regions (the Brown and Dark Brown soil zones) but occur as well in the Aspen Parkland and even under forest. They occur on parent materials containing sodium salts, or in lowland areas influenced by ground water discharge. Solonetzic soils are often referred to as cla...
Soils harbor a high diversity of ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) large subunit coding genes (cbbL). Real-time PCR was used to quantify this gene in differently managed agricultural soils and soil microhabitats. We developed primers and a TaqMan probe that target the "red-like" RubisCO gene cbbL. Primers and probe were developed based on cbbL sequences of selected bacte...
Degradation and sorption of imidacloprid in dissimilar surface and subsurface soils Jennifer C. Anhalt a , Thomas B. Moorman b & William C. Koskinen c a Department of Microbiology , Iowa State University , Ames, Iowa, USA b United States Department of Agriculture , Agricultural Research Service, National Soil Tilth Laboratory , Ames, Iowa, USA c United States Department of Agriculture , Agricul...
an agroecological zones (aez) map is an essential tool for agricultural planning. by integrating the key components of the agricultural environments, it offers a bird's-eye view of internal diversity, agricultural potential and constraints that decision-makers find easier to understand than a pile of single-theme maps. in this study, aez map of the karkheh river basin has been prepared usi...
1 Jiangsu Key Laboratory for Bioresources of Saline Soils, Provincial Key Laboratory of Agrobiology, Institute of Agro-Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China 2Key Laboratory of Coastal Biology & Bioresources Utilization, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, China 3Cancer and Genetics Research C...
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