Evaluation of Sedimentation Control as a Best Management Practice for Removing Copper-based Crop Protectants in Plasticulture Runoff
dc.contributor.author | Stall, Karen Marie | en |
dc.contributor.committeecochair | Gallagher, Daniel L. | en |
dc.contributor.committeecochair | Dietrich, Andrea M. | en |
dc.contributor.committeemember | Dillaha, Theo A. III | en |
dc.contributor.department | Environmental Engineering | en |
dc.date.accessioned | 2014-03-14T20:35:35Z | en |
dc.date.adate | 1999-05-12 | en |
dc.date.available | 2014-03-14T20:35:35Z | en |
dc.date.issued | 1999-04-22 | en |
dc.date.rdate | 2000-05-12 | en |
dc.date.sdate | 1999-05-07 | en |
dc.description.abstract | The fate and distribution of copper-based crop protectants, applied to tomato fields to protect against disease, were investigated in a greenhouse-scale simulation of farming conditions in a coastal environment. Following rainfall, 99% of the applied copper was found to remain on the fields sorbed to the soil and plants; most of the soil-bound copper was found sorbed to the top 2.5 centimeters of soil. Of the copper leaving the agricultural fields, 82% was found in the runoff with the majority, 74%, sorbed to the suspended solids. The remaining copper, 18%, leached through the soil and entered the groundwater with 10% in the dissolved phase and 8% sorbed to suspended solids. Although only one-percent of the copper was found to leave the field, this was sufficient to cause high copper concentrations (average 2102 ± 433 mg/L total copper and 189 ± 139 mg/L dissolved copper) in the runoff. Copper concentrations in groundwater samples were also high (average 312 ± 198 mg/L total copper and 216 ± 99 mg/L dissolved copper). Sedimentation, a best management practice for reducing copper loadings, was found to reduce the total copper concentrations in runoff by 90% to a concentration of 245 ± 127 mg/L; however, dissolved copper concentrations remained stable, averaging 139 ± 55 mg/L. Total copper concentrations were significantly reduced by the effective removal of suspended solids with sorbed copper. This research was supported by a grant from the Virginia Department of Agriculture and Consumer Services. Funding was also provided by Sea Grant. | en |
dc.description.degree | Master of Science | en |
dc.identifier.other | etd-050799-123132 | en |
dc.identifier.sourceurl | http://scholar.lib.vt.edu/theses/available/etd-050799-123132/ | en |
dc.identifier.uri | http://hdl.handle.net/10919/32347 | en |
dc.publisher | Virginia Tech | en |
dc.relation.haspart | ksbody5.PDF | en |
dc.relation.haspart | ksbody1.PDF | en |
dc.relation.haspart | ksvita.PDF | en |
dc.relation.haspart | ksbeg2.PDF | en |
dc.relation.haspart | ksappend.PDF | en |
dc.relation.haspart | ksbody4.PDF | en |
dc.relation.haspart | ksbody3.PDF | en |
dc.relation.haspart | ksbody2.PDF | en |
dc.relation.haspart | ksbeg1.PDF | en |
dc.rights | In Copyright | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
dc.subject | sedimentation | en |
dc.subject | plasticulture | en |
dc.subject | copper | en |
dc.subject | crop protectant | en |
dc.subject | best management practice | en |
dc.title | Evaluation of Sedimentation Control as a Best Management Practice for Removing Copper-based Crop Protectants in Plasticulture Runoff | en |
dc.type | Thesis | en |
thesis.degree.discipline | Environmental Planning | en |
thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
thesis.degree.level | masters | en |
thesis.degree.name | Master of Science | en |
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