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Dr. Sigua is responsible for research on identifying spatial and temporal variations within fields and watersheds impacted by livestock and assessing best management practices (BMPs) to reduce nutrient loading of water supplies and to increase water and nutrient use efficiency of subtropical forage. He will determine impact of BMP for monocultures and mixtures of grasses and legumes on dynamics of soil carbon, nitrogen, and phosphorus, and effects on ground water nitrate and phosphorus; animal movement patterns on nutrient concentration and movement with rainfall events in subtropical pastures; and interaction of forage types and grazing management on carbon, phosphorus, and nitrogen recycling in pastures. Current Research:1. Environmentally Friendly Forage-Livestock Systems for the Subtropical U.S.A. Cattle Grazing and the Environment.2. Use of dredged materials for pasture establishment: forage productivity and ecological implications.3. Assessing effectiveness of alum treatment and wetland best management practices for stormwater management.
Keywords: BEEF; CARBON; DREDGED; EUTROPHICATION; NITROGEN; NUTRIENT; PASTURE; PHOSPHORUS; SOIL; STORMWATER; SUBTROPICAL; WATER; WETLANDS
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