posted
Jun 21, 2010 by News Gatherer
Researchers say the reduction of sediment in a plowed field and low concentrations of two herbicides. The development of effective conservation practices, a team of scientists examined whether the river grass compost filter socks that reduce the flow of loose sediment and keep the chemicals in the runoff. Runoff water cut in the fields may contain large amounts of eroded soil and some fertilizer and herbicides.
Environmental Protection Agency for the construction as an alternative to silt fences and straw bales, but have not been tested in agricultural fields. Compost socks are filter mesh tubes filled with wood chips and composted bark. These devices have been recognized by the United States
Socks filter had a negligible effect on nutrient concentrations in runoff. They found that the median filter reduces the concentration of sediment runoff by 49% in the plowed field, but had no effect on the field without tillage, where concentrations of sediment, one-fifth of that from the field crop. The field study of two years was conducted by scientists at the USDA-ARS, soil and Shipitalo Martin Lloyd Owens, a hydraulic engineer Jim Bonta Ohio State University in Dayton and associate of Libby. Socks filter also reduces the concentrations of herbicides alachlor and 18% of the herbicide glyphosate (Roundup) by 5% in runoff from agricultural fields.
for conservation tillage, sometimes called "seed" leave a little "from previous crop residues on the soil surface, reducing the amount of sediment lost in runoff, but do little to reduce nutrient concentrations and herbicides applied on the surface that can be easily dissolved and transported in runoff.
Similarly, the bumpers of conservation, such as filter strips, riparian buffer zones of forest and grass waterways, can further reduce the transport of nutrients and chemicals as it moves runoff from fields crop for feed. They are also generally more effective in retaining sediment and dissolved chemicals work best when the flow is distributed uniformly throughout the buffer zone.
If these results are promising, filter socks can be another tool that can be used by farmers and environmentalists to reduce the impact of agricultural production on surface water quality. Surveys in which materials are mixed with compost to improve nutrient removal and herbicides have been carried out in collaboration with the filter manufacturer of socks Filtrexx International, LLC. This study shows that the filter socks can improve the efficiency of waterways, grass reduce sediment transport.
Related Stories
Uncategorized 
