In fertilized and unfertilized plots of ten Chilean allophanic soils the fraction of total-P associated with organic matter and the organic carbon content were determined. Cultivation with P fertilization for 40 yr or ...

Social organization is an important component of the population biology of a species that influences gene flow, the spatial pattern and scale of movements, and the effects of predation or exploitation by humans. An important ...

The occupation of a recyclable materials collector consists of a way to guarantee the income for many who carries out this work on the streets, landfills and dumps of Brazilian municipalities. These collectors can be ...

En este documento se presentan una serie de criterios propuestos para determinar modalidades apropiadas de organización de forma asociativa (FA)

Phosphorus is a finite natural resource and the use of gradual-release phosphate sources, associated with an organic compound may favor a more rational use of this nutrient, since organic matter protects P from soil fixation. ...

This panel features junior and senior scholars from the United States, Denmark, and Brazil, who will come together to discuss some of the central tensions between local and global knowledge organization systems. They will ...