Agricultural soils are a main source of nitrous oxide (N2O), potent greenhouse gas and the dominant ozone-depleting substance emitted to atmosphere. The only known sink N2O in soil is microbial reduction N2. Carbon (C) availability key factor determining community composition soil. However, its role shaping structure reducing communities unexplored. In this study, microcosm experiment was set u...

Soil carbon (C) storage is dependent upon the complex dynamics of fresh and native organic matter cycling, which are regulated by plant and soil-microbial activities. A fundamental challenge exists to link microbial biodiversity with plant-soil C cycling processes to elucidate the underlying mechanisms regulating soil carbon. To address this, we contrasted vegetated grassland soils with bare so...

Abstract Sclerotinia stem rot, caused by sclerotiorum (Lib.) de Bary, is a major disease in soybean many parts of the world. Sustainable control measures to combat this pathogen can be better achieved combining different available tools. One element fungal diseases could changing biological activities adding organic matter inputs, such as biochar and compost, soil. Other players are arbuscular ...

Enhanced soil respiration in response to global warming may substantially increase atmospheric CO2 concentrations above the anthropogenic contribution, depending on the mechanisms underlying the temperature sensitivity of soil respiration. Here, we compared short-term and seasonal responses of soil respiration to a shifting thermal environment and variable substrate availability via laboratory ...

Compost has been shown to have a range of positive impacts on soil quality and can provide an important source of nutrients for plants. While these benefits have been documented for many finished composts, there is presently little understanding of the impact of composting process conditions and the extent of compost decomposition on soil C and N mineralization after compost incorporation. This...

The aim of this thesis was to investigate the role of resources in driving ecosystem processes and in influencing soil-and plant communities in boreal and temperate forests, through four complementary experimental studies. In the first study, plant and soil microbial responses to the quality and diversity of added organic substrates from boreal forests were investigated. The substrate-diversity...

We tested the hypothesis that different minerals in soil select distinct bacterial communities in their microhabitats. Mica (M), basalt (B) and rock phosphate (RP) were incubated separately in soil planted with Trifolium subterraneum, Lolium rigidum or left unplanted. After 70 days, the mineral and soil fractions were separated by sieving. Automated ribosomal intergenic spacer analysis was used...

The presence of salts in the irrigation waters semiarid region negatively affects production seedlings. Thus, substrates based on carbonized rice husk are an alternative for saline environments, associated with management strategies brackish water. This study evaluated physiological responses yellow passion-fruit seedlings as a function water different substrates. was developed at Universidade ...

Identifying a soil core microbiome is crucial to appreciate the established microbial consortium, which is not usually subjected to change and, hence, possibly resistant/resilient to disturbances and a varying soil context. Fungi are a major part of soil biodiversity, yet the mechanisms driving their large-scale ecological ranges and distribution are poorly understood. The degree of fungal comm...

Although some work has been done on the effect of 2,4-dichlorophenoxyacetic acid (2,4-D) on the numbers and kinds of organisms of the soil (Smith, Dawson and Wenzel, 1945; Hoover and Colmer, 1953), on respiration of certain soil organisms (Magee, 1954), and on the effect of this herbicide on certain processes of the soil (Newman, 1947; Jones, 1948; Carlyle and Thorpe, 1947; and Payne and Fults,...