A tremendous effort is underway in south Florida to find a way to restore the natural ecosystems. Agriculture is one of the important compounds of the restoration. Agricultural lands buffer natural systems from urban areas, inhibit urban sprawl, provide jobs and agricultural products with sales of over $2 billion for Palm Beach, Hendry, St. Lucie, and Miami-Dade Counties alone. However, chemical use and water management practices for crop production directly affect natural ecosystem in south Florida. Our research group is working on Best Management Practices (BMPs) to protect our ecosystem and sustain crop production. We will present research information on crop nutrient/pesticide and irrigation management in Miami-Dade County.