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| Development of pre and postharvet technologies to reduce pesticides residues in papaya. Status: Completed Start date: Mon Feb 01 00:00:00 GMT-03:00 2016 |
| Fine-texture soils in Brazil are generally deemed to have low agricultural potential. Due to low levels of clay and organic matter, they usually present low nutrient and water retention capacity, and, when poorly managed, may produce negative impacts associated with high risks of groundwater contamination by nutrients and other chemical pollutants, or with potential erosion when directly exposed to rain. Status: Completed Start date: Mon Oct 01 00:00:00 GMT-03:00 2012 |
| Pasture degradation is one of the main problems of Brazilian cattle farming. Several strategies to recover the productivity of degraded pastures have been developed by Embrapa and other research and education institutions. In such studies, reducing the costs of the recovery of degraded pastures has been one of their main focuses. Integrated crop-livestock systems (ICLS) have proved to be some of the best alternatives to reduce the costs of pasture fertilization. ICLS have potential to increase t Status: Completed Start date: Thu Nov 01 00:00:00 GMT-03:00 2007 |
| Soil quality may be measured through the use of indicators, which are attributes that measure or reflect the environmental state or condition of sustainability of the referred ecosystem. The knowledge regarding the spatial distribution of soil quality and its levels becomes essential in this case, once it favors the study of their relation with the type of soil management, with the environmental impact and the productive capability of agricultural systems. For such, it is important to have a met Status: Completed Start date: Tue Sep 01 00:00:00 GMT-03:00 2009 |
| The main environmental problems associated with the waste produced in intensive pig farming are its high organic load, high amount of nutrients, the presence of some metallic species and of micro-organisms, some of which are known pathogenic agents. In general, the waste treatment systems in pig farms still lack the ability to reduce or eliminate pathogenic agents from the waste produced, a fact which makes it difficult to reuse the water in the very facility or even in agriculture. Seasonal flu Status: Completed Start date: Thu Jan 01 00:00:00 GMT-03:00 2009 |
| The process of organic waste biodigestion is quite old, as the first unit was installed in Bombay, India, in 1819; in Australia, a company has produced and industrialized methane from sewage since 1911. China has 4.5 million biodigesters that produce gas and organic fertilizer, the main role of which is sanitation in rural areas. However, different aspects related to biodigesters are still lacking. This work aimed at studying and improving a biodigester system, and its general goal was the devel Status: Completed Start date: Sun Apr 01 00:00:00 GMT-03:00 2007 |