Autecology of Fusarium oxysporum f. sp. raphani in soils suppressive and conducive to Fusarium-wilt of radish
Soil organic matter recovery in semiarid grasslands: Implications for the conservation reserve program
Role of rhizobial biodiversity in legume crop productivity in the west asian highlands. III. Rhizobium meliloti
Persistence of Bacillus subtilis RB14 and its derivative strains in soil with respect to the lpa-14 gene
Geochemists have long recognized a correlation between rates of physical denudation and chemical weathering. What underlies this correlation? The Critical Zone can be considered as a feed-through reactor. Downward advance of the weathering front brings unweathered rock into the reactor. Fluids are supplied through precipitation. The reactor is stirred at the top by biological and physical processes. The balance between advance of the weathering front by mechanical and chemical processes and mass loss by denudation fixes the thickness of the Critical Zone reactor. The internal structure of this reactor is controlled by physical processes that create surface area, determine flow paths, and set the residence time of...
The cold deserts of the Colorado Plateau contain numerous geologically and geochemically distinct sedimentary bedrock types. In the area near Canyonlands National Park in Southeastern Utah, geochemical variation in geologic substrates is related to the depositional environment with higher concentrations of Fe, Al, P, K, and Mg in sediments deposited in alluvial or marine environments and lower concentrations in bedrock derived from eolian sand dunes. Availability of soil nutrients to vegetation is also controlled by the formation of secondary minerals, particularly for P and Ca availability, which, in some geologic settings, appears closely related to variation of CaCO3 and Ca-phosphates in soils. However, the results...
Influence of field application of an atoxigenic strain of Aspergillus flavus on the populations of A. flavus infecting cotton bolls and on the aflatoxin content of cottonseed
Mass transfer improvement of contaminants and nutrients in soil in a new type of closed soil bioreactor
Survival of salmonellas in a colony of common black-headed gulls Larus ridibundus between two nesting periods
Uptake of cadmium and zinc by the bird-cherry oat aphid Rhopalosiphum padi (Homoptera:Aphididae) feeding on wheat grown on sewage sludge amended agricultural soil
Health-based soil action levels for trivalent and hexavalent chromium: A comparison with state and federal standards