Large volumes of compost produced from waste materials like yard trimmings, household trash (municipal solid waste), or biosolids (wastewater sludge) will likely become available for use by the Florida vegetable industry in the future. Using compost to produce vegetables has the potential to increase water and fertilizer conservation and reduce leaching from inorganic fertilizers in Florida's sandy soils. Compost quality for vegetable production systems should be based on soluble salts, phytotoxic compounds, C:N ratio, plant nutrients, trace metals, weed seeds, odor, moisture, pH, water-holding capacity, bulk density, cation exchange capacity, and particle size. In Florida, immature compost contained phytotoxic compounds that were harmful to crop germination and growth. Amending soil with mature composted waste materials has been reported to increase the growth and yields of vegetable crops grown in Florida. However, a beneficial response does not always occur, and the magnitude of the response is often not predictable.
Monica Ozores-Hampton, Thomas A. Obreza, and George Hochmuth
Michele Krucker, Rita L. Hummel, and Craig Cogger
reduces solid waste production and the subsequent need for disposal. Alternative components include various composted materials ( Carlile, 2008 ; Corti et al., 1998 ) using feedstocks such as yard debris and pruning waste, animal manures, biosolids
Xiaoyan Dai, Donald M. Vietor, Frank M. Hons, Tony L. Provin, Richard H. White, Thomas W. Boutton, and Clyde L. Munster
Top-dressings of composted municipal biosolids (CMB) increase nutrient concentrations in soil and clippings and enhance turfgrass color, quality, and growth ( Garling and Boehm, 2001 ; Hansen et al., 2007 ; Johnson et al., 2005 ). In addition
WJ. McLaurin and G.L. Wade
In response to national Cooperative. Extension Service initiative and Georgia's Solid Waste Management Acts, eight state agencies and University of Georgia personnel joined forces to demonstrate simple and effective home composting concepts in a workshop format. Attended by over 550 participants, a series of ten workshops were held in selected locations throughout the state. These workshops were designed to instruct local volunteers to teach appropriate waste management practices concerning home composting and how home composting can help meet the state mandated 25% landfill reduction goal, what costs are involved, how to establish a community education program, and where to obtain technical assistance.
During the daylong workshop, participants heard presentations on five important aspects of the role of composting in community waste management--the legislative/environmental mandate., the composting process, equipment/site requirements, curbside waste reduction, and start-up for local programs in home composting.
As the first state-wide home composting educational project, it serves as a model for other state-wide initiatives targeting waste management concerns, and creates appropriate impetus for community waste management action throughout the state.
Kimberly K. Moore
Florida Agricultural Experiment Station journal series no. R-10140. I wish to thank Luci Fisher for her technical assistance; the Solid Waste Authority of Palm Beach County, Fla., for the compost product; and Lovell Farms, Miami, Fla., for the plant
Maria Papafotiou, Barbara Avajianneli, Costas Michos, and Iordanis Chatzipavlidis
resource that should be preserved. A parallel environmental issue is the disposal of agricultural wastes. Composts from agricultural wastes have the potential to replace a significant proportion of peat in the growth medium of potted ornamentals ( Burger et
Francis R. Gouin
Sewage sludge is being converted to compost by many municipalities. Its use in the production, establishment, and/or maintenance of horticultural crops is dependent on soluble salt concentration, particle size, stability, dewatering procedures, storage conditions, and crop needs. Soluble salt concentration has the greatest effect on the amount of compost that can be used as a soil or potting media amendment. Because composted sewage sludge is rich in plant nutrients, it can supply many of the nutrient needs of plants, depending on the amount used and if the plants are growing in the ground or in containers. However, improper storage of composted sewage sludge can render the product useless due to the accumulation of acetic acid and alcohol that occur under anaerobic conditions.
James W. Julian, Bernadine C. Strik, Handell O. Larco, David R. Bryla, and Dan M. Sullivan
) to N ratio making plant fertility more difficult and expensive to manage with organic fertilizer products ( White, 2006 ). The use of compost as a mulch in blueberry may have advantages over sawdust. Compost has a lower C to N ratio and releases 3% to
S. Christopher Marble, Jeff L. Sibley, Charles H. Gilliam, and H. Allen Torbert
caused elevated levels of total N in soil water in Expt. 2. However, composting PL before application could reduce N leaching. Use of CPL as fertilizer in urban landscapes could provide an environmentally sound means of disposal for poultry producers as
James E. Altland and Charles Krause
also possible that the addition of organic substrates with high cation exchange capacity, in the form of compost, might reduce and buffer substrate pH over time. Chemical amendments can also be used to lower pH of soils and substrates. Elemental S has