Results: 239

Isolation of culturable mycota from Argentinean soils exposed or not-exposed to pesticides and determination of glyphosate tolerance of fungal species in media supplied with the herbicide

Rev. argent. microbiol; 52 (3), 2020
Abstract The current agricultural system has led to the development of glyphosate (GP)-resistant weeds, causing an increase in GP doses and applications. Native mycota of pesticide-contaminated sites are the major source of pesticide-degrading microorganisms. The aims of the present study were to isolate...

Biosurfactant and bioemulsifier as promising molecules produced by Mucor hiemalis isolated from Caatinga soil

BACKGROUND: The present study describes the production of biosurfactant (BS) and emulsifier (BE) by the filamentous fungus Mucor hiemalis UCP 0039, as well as the characterization and stability of the both biomolecules for environmental or industrial applications. RESULTS: Biosurfactants and bioemulsifie...

Isolation of phosphate-solubilizing bacteria from subtropical soils with different fertilization histories

Biosci. j. (Online); 36 (4), 2020
Phosphorus is one of the most abundant chemical elements but has a low bioavailability index. Therefore, microrganisms play a fundamental role in providing insoluble phosphorus to plants. The objective of this study was to evaluate the capacity of bacteria to solubilize inorganic phosphates i...

Influence of eucalyptus development under soil fauna

Braz. j. biol; 80 (2), 2020
Abstract In the implantation of forests, soil tillage can affect the soil fauna, but over the years, it is possible that forest development can recompose the biological indicators of soil quality. So, the aim of this study was to evaluate the influence of different periods of eucalyptus development on co...

Phytochemistry and antifungal potential of Datura inoxia Mill. on soil phytopathogen control

Biosci. j. (Online); 36 (3), 2020
The application of chemical pesticides for the control of fungal diseases results in impacts on the environment and human health. The use of vegetal extracts with antifungal properties for the proper management of crops becomes a viable alternative, mainly for organic and family ...

Emergence and physiological behavior of provenances of pinhão manso in function of level of aluminum

Biosci. j. (Online); 36 (3), 2020
The aluminum in high levels in the soil affects the emergence, growth, and development of various species. Therefore, the objective of this study was to evaluate the emergence and physiological behavior of four provenances of Jatropha curcas subjected to different levels of aluminum. The experim...

The stability of aggregates and organic carbon content after the application of gypsum, soil scarification and a succession of agricultural crops

Biosci. j. (Online); 36 (3), 2020
Studies related to the monitoring of soil quality by physical attributes are important for the evaluation and maintenance of the sustainability of agricultural systems, besides indicating the appropriate management of the environment, aiming at its conservation and productivity. The objective of this stu...

Soil organic matter fractions and carbon management index under integrated crop-livestock system

Biosci. j. (Online); 36 (3), 2020
The objective of this work was to evaluate the carbon content of the physical, chemical and oxidizable fractions of soil organic matter (SOM) and to calculate the carbon management index (CMI) in an area managed under an integrated crop-livestock system (ICLS) in the western region of Paraná - Brazil. T...

Potassium supplying capacity of some lowland soils under potassium fertilization and successive croppings

Biosci. j. (Online); 36 (3), 2020
The effects of intense cropping and potassium fertilization on potassium (K) dynamics and non-exchangeable K release from three lowland soils of Paraná State, Brazil, were investigated in this study. Samples of three lowland soils were fertilized or not with K and subjected to six successive croppings (...

Changes in chemical soil and corn yield after application of gypsum and potassium doses

Biosci. j. (Online); 36 (3), 2020
Soil liming is a common practice in agriculture. It aims to reduce soil acidity and to supply calcium and magnesium. Lime, however, is not easily soluble in the soil, and its reaction products are often concentrated in the application zone, which is mainly the topsoil layer. In order to in...