: Nitrogen Mineralization From Composted Materials.
Poster Number 2032
Monday, November 4, 2013
Tampa Convention Center, East Hall, Third Floor
Dorcas H. Franklin, Crop and Soil Sciences Dept., UGA, Athens, GA, Damla Bender-Ozenc, Department of Soil Science and Plant Nutrition, Ordu University, Faculty of Agriculture, Ordu, Turkey, Nedim Ozenc, Crop and Animal Production Program, Ordu University, Vocational School, Ordu, Turkey and Miguel Cabrera, Crop and Soil Sciences, University of Georgia, Athens, GA
Composted materials are extensively used in small- and medium-sized organic farms for food and fiber production. Information is needed on rates of nitrogen mineralization from these composted materials so that producers can develop better nitrogen budgets. A 214-day incubation was conducted at 30C with 14 composts to evaluate net nitrogen mineralization. Of the 14 composts 3 immobilized nitrogen, 2 did not have a net effect on inorganic N, and 9 had daily, first-order rates of mineralization ranging from 0.00014 to 0.00084. The percentage of organic N mineralized ranged from 4 to 17%. These results indicate that composted materials can have varied effects on the availability of inorganic nitrogen.
