Project Number: 6657-12130-002-00
Start Date: May 02, 2011
End Date: May 01, 2015
The current method to improve degraded soils would be incorporation of crop residues which do not persist. To improve soils and their productive potential, there is a need to develop better management systems and more recalcitrant forms of soil organic C (SOC), such as biochar (a charcoal-like byproduct made during pyrolysis of organic feedstocks). First, biochars that have been designed (produced under specific conditions) and characterized will be catalogued and matched to the needs of these soils – to improve fertility, increase water holding capacities, and reduce root penetration resistance. Designed biochars and/or biochar blends will be lab tested in soils for effectiveness as recalcitrant SOC amendments. Second, impacts of alternative management and crops on SOC levels will be studied in field experiments with residue addition/removal at the surface and residue addition at root depths. In one case, cover crops will replace removed residues. Technologies resulting from these lines of research will improve soil physical, chemical, and microbial properties for enhanced soil quality, water retention, and crop/bioenergy productivity. These improvements help meet administration goals of enhanced food security, sequestered C, and reduced greenhouse gas (GHG) emissions. The immediate beneficiaries are Coastal Plain agribusinesses and farmers. The ultimate beneficiaries will be individuals and families who will be provided with sufficient food and clean water. More effective soil and crop management will enable agriculture and other sectors of society to share water/soil resources, maintain environmental quality, and improve food production.