Studies on the biology and control of Vaucheria dichotoma found in freshwaters in Britain
Dowidar, A.R.; Robson, T.O.
Weed Research 12(3): 221-228
ISSN/ISBN: 0043-1737 DOI: 10.1111/j.1365-3180.1972.tb01210.x
Vaucheria plants collected from a ditch near Crowland, Lincolnshire and from the River Cherwell at Oxford in the first week of October 1970 were identified as V. dichotoma. A nutrient medium is described which allows growth of the alga and enables organs of sexual reproduction to be produced. Preliminary studies on the control with diquat show that it must be exposed to a concn. of 2 mg/litre for 6h for the herbicide to be effective. The presence of mud reduces the rate at which chlorophyll disintegrates and hastens the inactivation of diquat.