Organic matter (OM) degradation from amendments used in the remediation of metal-contaminated soils leads to modifications soil chemical properties immediately after addition, which can also affect metal distribution. Therefore, speciation and potential mobility heavy metals e.g., lead (Pb) cadmium (Cd) were evaluated three amended with OM. Soils, both spiked (with nitrate solution) unspiked, t...

When building soil organic matter (SOM) contents in agricultural production systems, stabilization of both pre-existing as well as added C is important. A laboratory mineralization experiment was conducted over 374 days to evaluate the effect of pre-existing SOM on soil C mineralization after addition of organic matter (OM) using sugar cane. The SOM gradient used here stretched from 21 to 106 g...

Organic matter (OM) decomposition and soil fauna feeding activity were integrated as functional endpoints into ecotoxicological tests with intact-soil-core Terrestrial Model Ecosystems (TMEs). Cellulose filter paper served as standardized OM and was either inserted into the top soil or placed on the soil surface for a period of up to 16 weeks. Faunal feeding activity was assessed by the bait-la...

Prescribed burning is a common management tool used in grassland restorations to improve conditions for plant growth. At a grassland restoration in Maryland, we studied the impacts of sequential prescribed burning on near-surface soil chemistry of a highly weathered soil. We hypothesized that soil pH and base cations in the surface soil would increase in the nutrient-poor soils after the burnin...

tillage systems influence soil physical, chemical and biological characteristics which in turn may alter, root characteristics, growth, and development. a three year study was conducted to investigate the effects of seven tillage systems on some soil (fine-loamy mixed, typic haplocambids) physical characteristics and wheat (triticum aestivum l.) root morphology. tillage treatments included ...

Alkaline soils with low buffering capacity are susceptible to amendments such as biochar or biofertilizers, which could drastically alter their pH. For that, this study aimed evaluate the effectiveness of a and biofertilizer addition improve soil characteristics use nutrients reduce doses chemical fertilizer. we measured initial effect on characteristics. Then, changes produced by cultivated so...

In the course of screening for antibacterial antibiotics from actinomycetes, a new antibiotic, OM704 A, has been isolated from the culture broth of strain OM-704, a soil isolate identified as Streptomyces sp. This antibiotic was active against Gram-positive bacteria. The present paper deals with the taxonomy of strain OM-704 and the fermentation, isolation and biological and physicochemical pro...