This study aimed assessing the land degradation status of some soil series North Tikrit Agricultural Project using remote sensing data. Part project area (246,555) km2 was selected based on variations in characteristics and agricultural crops. The is located between longitudes 43˚ 12′ 30ʹʹ 27′ E latitudes 35˚ 15′ 00ʹʹ 0′ N. includes five series: Hatra, Jareesh, Safa, Seneyah, Shurqat. Forty-fou...

The present study explores the potential of directly linking phylogenetic identities obtained by cloning and sequencing of ITS sequences to dominant ribotypes of molecular community fingerprints to give further insight into dominant members of the communities in three Irish grassland soils. The ten most abundant bacterial ribotypes of untreated bare soils of three grassland microcosms were chos...

Podoconiosis is a non-infectious tropical disease caused by exposure of bare feet to irritant alkalic clay soils. This causes an asymmetrical swelling of the feet and lower limbs due to lymphoedema. This swelling is called "elephantiasis" and may lead to severe disability of the patient. It is found in areas of tropical Africa, Central and South America and north-west India, where such soils co...

Around the world, especially in semi-arid regions, millions of hectares of irrigated agricultural land are abandoned each year because of the adverse effects of irrigation, mainly secondary salinity and sodicity. Accurate information about the extent, magnitude, and spatial distribution of salinity and sodicity will help create sustainable development of agricultural resources. In Morocco, sout...

Maize is the New World’s preeminent grain crop and it provided the economic basis for human culture in many regions within the Americas. To flourish, maize needs water, sunlight (heat), and nutrients (e.g., nitrogen). In this paper, climate and soil chemistry data are used to evaluate the potential for dryland (rainon-field) agriculture in the semiarid southeastern Colorado Plateau and Rio Gran...

Soil organic carbon (SOC) is a major component in the global carbon cycle. Yet how input of plant litter may influence the loss of SOC through a phenomenon called priming effect remains highly uncertain. Most published results about the priming effect came from short-term investigations for a few weeks or at the most for a few months in duration. The priming effect has not been studied at the a...

We develop an approach to utilize anisotropic metamaterials to solve one of the fundamental problems of modern plasmonics--parasitic scattering of surface waves into free-space modes, opening the road to truly two-dimensional plasmonic optics. We illustrate the developed formalism on the examples of plasmonic refractor and plasmonic crystal, and discuss limitations of the developed technique an...

The objective of this paper is to analyze the behaviour of a backscattered signalaccording to soil moisture depth over bare soils. Analysis based on experimental verticalmoisture profiles and ASAR/ENVISAT measurements has been carried out. A modifiedIEM model with three permittivity layers (0-1cm, 1-2cm, 2-5cm) has been developed andused in this study. Results show a small effect of moisture pr...

Assistant Professor, Division of Agriculture Natural Resource Management, Arizona State University, Tempe, Arizona 85281; and Supervisory Soil Scientist, Rocky Mountain Forest and Range Experiment Station, U.S. Forest Service, Arizona State University, Tempe, Arizona 85281. Abstract: Runoff and sediment was measured for a chaparral community on the Prescott National Forest in the summer of 1979...