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Soil organic matter (SOM) is crucial to soil health, supporting most of the soil properties that benefit plant growth and ecosystem services including carbon sequestration, nutrient recycling and water infiltration. Recent study is exposing the soil microbial community as not only decomposing SOM, but also providing the primary source of chemicals for its formation. All else equal, SOM formation is...
The combined impacts of modified nitrogen (N) fertilizers and water saving irrigation (WSI) on greenhouse gas (GHG) emissions and grain yield of rice paddies have not previously been documented. GHG emissions from rice paddies under modified N fertilizers and WSI deserve attention because water and N are being used extensively to attain higher grain yield. A field experiment was conducted to evaluate...
Stabilization of dispersive soils is of great importance and has been looked into in various studies across the globe. In this study, the biological soil stabilization as a novel method has been investigated. In order to improve the erodibility resistance of dispersive soil samples, the bacteria Bacillus sphaericus has been employed. In this research, we focus on the improvements induced in dispersive...
•A high degree of multicollinearity existed between many of the physiochemical parameters•Poorly-crystalline iron (Feo) and pH were consistently strong driver of net N mineralization rate.•The influence of Feo and pH exceeded total C and climatic variables, but was less than total N.•The inclusion of pedogenic iron fractions improved explained variance over models without iron.
Deforestation and conversion to crop land and pasture in tropical regions has important effects on hydrological processes including increased flooding and reduced drought flows. We investigated: 1) differences in soil characteristics between four tropical land uses (forest, coffee, sugar cane and pasture), and 2) how hydrological processes differ between these four land uses. We measured bulk density,...
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