The National Forest Soil Inventory (NFSI) provides the Greenhouse Gas Reporting in Germany with a quantitative assessment of organic carbon (C) stocks and changes in forest soils. Carbon stocks of the organic layer and the mineral topsoil (30 cm) were estimated on the basis of ca. 1.800 plots sampled from 1987 to 1992 and resampled from 2006 to 2008 on a nationwide grid of 8 × 8 km. Organic lay...

BACKGROUND AND AIMS Despite concerns about the impact of rising sea levels and storm surge events on coastal ecosystems, there is remarkably little information on the response of terrestrial coastal plant species to seawater inundation. The aim of this study was to elucidate responses of a glycophyte (white clover, Trifolium repens) to short-duration soil flooding by seawater and recovery follo...

With the expansion of urban agriculture in many North American cities, there is a current need to evaluate the soil and urban environment to assess potential risks of metal contamination in urban grown food. In this study, a university farm, a community garden, and a brownfield located in Vancouver, BC were characterized with respect to soil metal concentrations, atmospheric deposition of metal...

A laboratory bioassay was investigated for screening insecticides for preventing stand losses by the wireworm Melanotus communis (Gyllenhal) to germinating plant cane. For liquid materials, single-eye billets were dipped into different concentrations of a candidate insecticide and then planted in plastic containers of organic soil; wireworms were then introduced, airtight lids were placed onto ...

An actinomycin-D producing strain was isolated from soil and characterized as Streptomyces sindenensis. The culture was subjected to UV irradiation and a mutant with 400% higher actinomycin-D production was isolated (400 mg/l(-1) as compared to 80 mg/l(-1) produced by the parent). Production medium was optimized and antibiotic yield with the mutant was enhanced to 850 mg/l(-1) which is 963% hig...

Soil sample collection Nutrient content of soil can vary greatly by depth. The top 4-6 inches, the zone into which most fertilizer is placed and most crop residue is incorporated, often has much higher levels of organic matter, nitrogen (N), phosphorus (P), potassium (K) and micronutrients than the soil below. To accurately reflect overall nutrient availability a soil sample should be collected...

a r t i c l e i n f o In Soil Taxonomy three diagnostic subsurface horizons reflect clay enrichment: the argillic, kandic, and natric horizons. Clay illuviation is recognized in Soil Taxonomy at some level in 10 of the 12 orders, including the percent of the soil series in the USA contain taxonomically defined clay-enriched horizons. However, many other soils contain Bt horizons that do not qua...

Nine pedons of alluvial origin in the Lower Niger River floodplains Nigeria were examined for morphogenesis, physicochemical properties, mineralogical composition, and heterogeneity parent materials. The soils stratified with redoximorphic features observed different layers reaching A-horizon subsurface grayization. Soils that received annual enrichment found to be structurally weak while other...

However, they played an important role in the understanding of soil properties and land use planning, and came later to provide a useful basis for national soil mapping. The geological surveys gave rise to the so-called Quaternary and Petrological Maps, the first one being published 1857. The maps show mineralogy and texture and genesis of the parent material, e.g. texture of glacial till and w...