Journal or Publishing Institution: Bulletin of Environmental Contamination and Toxicology
Study: http://link.springer.com/article/10.1007%2FBF01705439#page-1
Author(s): Goldsborough, L.G. and Brown, D.J.
Article Type: Peer Reviewed Study
Record ID: 803
Abstract: Glyphosate (N-(phosphonomethyl)glycine) is a non-selective, broad spectrum, post-emergent herbicide recognized for use in the control of grasses, sedges and broad-leaved weeds (WSSA 1983). The Roundup(R) commercial formulation I is widely used in agricultural and silvicultural practise in North America and elsewhere. Glyphosate may enter aquatic systems through off-site movement from treated terrestrial land in herbicide spray drift, in surface runoff (Edwards et al. 1980) or adsorbed to suspended particulate matter (Bowmer 1982). Glyphosate has also been evaluated for use as an aquatic herbicide (Seddon 1981) and is registered in the United States as Rodeo(R) 1 for this purpose. There have been several studies of the toxicological effects of glyphosate on aquatic plants grown in laboratory culture (e.g., Hartman and Martin 1985) but few studies involving natural in situ plant communities. Sullivan et al. (1981) studied effects of a 2.2 L/ha Roundup application on the density of some periphytic diatoms, but could not differentiate phytotoxicity from natural seasonal succession. The objective of the present study was to assess the effects of the Roundup formulation of glyphosate on short term carbon assimilation by periphytic algal communities collected from six small forest ponds.
Keywords: Waste Water, Photosynthesis, Water Management, Water Pollution, Glyphosate
Citation: Goldsborough, L.G. and Brown, D.J., 1988. Effect of glyphosate (Roundup® formulation) on periphytic algal photosynthesis. Bulletin of Environmental Contamination and Toxicology, 41(2), pp.253-260.
