Currently, Brazil is the fourth largest consumer of fertilizers in the entire world; on average, the fertilizers may represent from 25 to 40% of the variable cost of the most important agricultural production systems in the country. One of the main cost variables is the fact that great quantities of applied nutrients via fertilizers are lost through volatilization and leaching. Thusly, methods of nutrient fixation which allow their extended-release in the soil might contribute to a more rational

Status: Completed     Start date: Sun Nov 01 00:00:00 GMT-03:00 2009