Soils provide numerous functions to support natural and human life. Soils and their functions develop over long timescales (decennia to millennia) under influence of environmental properties and drivers such as water flow, vegetation type and topography of the landscape. At the …
"147" Result
Sort By:
Weeds are ever-present within our natural and urban environments: growing through the cracks in the pavement, accompanying our gardens, and carpeting human-induced dereliction. Humans often, socially and linguistically, refer to them as a nuisance, but what if we instead viewed …
Drylands compose approximately 40% of the earth’s land surface; a hallmark of these systems is low average soil moisture and infrequent precipitation (or irrigation) which limit biogeochemical cycling rates. However, following a re-wetting event, soil metabolism can recover with…
Root hemiparasites are green plants that tap into a neighboring plant’s water-filled xylem to acquire inorganic nutrients, which can lead to an accumulation of nutrients in hemiparasite biomass. I performed an observational field study at Nachusa Grasslands and Franklin Creek St…
Soil export from agricultural watersheds in Iowa is an ongoing natural phenomenon that in recent history, due to significant unnatural increases, has become a foremost environmental concern. Since European-style agricultural land management began in the mid-19th century, deliver…
Tez çalışması kapsamında incelenen heykeltıraşlık eserler, antik dönemde Bithynia bölgesi sınırları içerisinde yer alan Apollonia ad Rhyndacum antik kentinde ve çevresinde bulunmuştur. Kültür ve Turizm Bakanlığı'nın izniyle Bursa Müzeler Müdürlüğü Başkanlığında Uludağ Üniversite…
This study explores 20 years of Minnesota regional phosphorus (P) management data across agricultural landscapes and how these are modeled by the Minnesota Phosphorus Index (MNPI). Nutrient-loading and farm management records from 1999-2019 were compiled across 17 different Minn…
A location-specific evaluation of hydrological landscape responses concerning past and projected climate and land use land cover (LULC) changes can provide a powerful intellectual basis for developing efficient and profitable agroecosystems, and overcoming uncertain and detrimen…
In western Niger soil fertility depletion threatens food production. Cattle management and manure are used to maintain soil fertility. However, cattle population and insufficient feed limit the use of manure for improving soil fertility. The purpose of this research was to asses…
Surface horizon samples from two Vertisols, an Andisol, and an Alfisol were collected from farmers' fields, research station farms, and uncultivated/non-fertilized areas to characterize the organic and inorganic forms of P, to describe the equilibrium P sorption-desorption chara…
A field experiment was conducted to study root production, soil organic matter, and moisture and sorghum yield in an alley-cropping system with Acacia saligna and Gliricidia sepium in the Hararghe highlands of Ethiopia. Tree hedgerows were planted on either side of a 4-m wide cr…
Numerous flights of Quaternary marine terraces are present around the island of Cyprus, in the Eastern Mediterranean. These terraces are a result of the global eustatic sea-level curve and local tectonism. Marine Isotope Stage (MIS) 5 through MIS 13 terraces are identified, mapp…
Experiments have been conducted on measuring the combined effects of (1) time after sludge application, (2) temperature of equilibration, and (3) soil properties (principally pH and texture) on P availability and chemical fractions. Plant-available P (measured by iron-oxide stri…
Three empirical salinity models (designated as Models R1, R2, and MF) were examined for real time soil moisture estimation and one-time calibration of electromagnetic induction sensors using apparent soil electrical conductivity. Field data were collected at two sites representi…
Biological degradation of lands resulting in wood, food and fodder shortages is a major problem in Azad Kashmir. Limited tree resources are rapidly dwindling, thus widening the gap between the demand and supply of essential products. Population increase has put enormous pressure…
Calcareous soils, locally known as marls, are extensively exploited in the construction of highways and building foundations. Despite their wide prevalence all-over the world, a review of the literature indicates that calcareous soils have received little attention from the geot…
This research describes the abiotic degradation of pirimiphos-methyl (0-2-diethyl-amino-6-methylpyrimidin-4-yl-0,0-dimethylphosphorothioate) under controlled conditions in aqueous solutions and in soil/water slurries. The kinetics of hydrolysis of pirimiphos-methyl was determine…
Soil fertility decline has been said to constitute a major cause of low agricultural productivity and a threat to food security in SubSaharan Africa, especially in its ecologically fragile regions. Already nutrient-poor soils, subjected to continuous cropping, wind and water ero…
The assessment of optimum nitrogen (N) fertilizer need for winter wheat (Triticum aestivum L.) is important for economic and environmental sustainability. A comprehensive understanding of fertilizer N requirement depends on estimation of the quantity of N needed by the crop vers…