this research was conducted to investigate the relationships between soil(organic matter, potassium, phosphorous, sodium, fine gravel, soil texture, ec, lime,gypsum, nitrogen) and environmental (elevation, slope) factors with distribution ofvegetation types in rangelands of sabzdasht, located in bafgh, yazd province at 2012. forthis purpose, four vegetation types were selected as follows: artem...

Laboratory and field studies were conducted to determine the persistence and efficacy of termiticides used as preconstruction treatments against subterranean termites. Bifenthrin (0.067%), chlorpyrifos (0.75%), and imidacloprid (0.05%) ([AI]; wt:wt) were applied to soil beneath a monolithic concrete slab at their minimum labeled rates. Soil samples were taken from three depths (0-2.5, 2.6-7.6, ...

To analyse the capacity of a soil to sequester organic carbon and impact that deforestation reforestation can have on its physical chemical properties, specific laboratory analyses are necessary. According standard methodology, number 16 samples were taken from two different depths (0–10 cm, 10–20 cm) areas (degraded area forest area) identify if type land use sampling depth key factors in chan...

In order to elucidate the distribution of soil nematodes in coastal wetlands and the effect of different distance from the sea line on soil nematode communities, we investigated the community structure of soil nematodes in one wetland perpendicularly oriented from Bohai sea coastline. In June 2006, soil samples were collected from the Yellow River Delta wetlands, in Dongying city of Shandong Pr...

Abstract. Conservation tillage has attracted increasing attention over recent decades, mainly due to its benefits for improving soil organic matter content and reducing erosion. However, the effects of long-term straw mulching under a no-till system on physicochemical properties bacterial communities at different depths are still unclear. In this 12-year experiment removal (CK) (SM) treatments,...

Wildfire, an increasing disturbance in peatlands, could dramatically change carbon stocks and reshape plant/microbial communities, with long-lasting effects on peatland functions. Soil fungi are important controlling the belowground nutrient cycling peatlands; however, impact of altered fire regimes these is still unclear. We assessed fungal abundance, composition, diversity across four soil de...

Four species of pteromalid parasitoids [Muscidifurax raptor Girault & Sanders, Spalangia cameroniPerkins, Spalangia endiusWalker, Spalangia geminaBoucek, and the chalcididDirhinus himalayanus (Masi)] were evaluated for their ability to locate house ßy pupae at various depths in poultry manure (41% moisture), ßy rearing medium (43% moisture), and sandy soil (4% moisture) from a dairy farm. Searc...