Journal or Publishing Institution: Weed Science
Study: http://www.jstor.org/discover/10.2307/4045904?uid=3739256&uid=2&uid=4&sid=21102570765171
Author(s): Kawate, M.K., Colwell, S.G., Ogg Jr, A.G. and Kraft, J.M.
Article Type: Peer Reviewed Study
Record ID: 1213
Abstract: Greenhouse studies were conducted to determine the following: if treating henbit or downy brome with glyphosate increased populations of Fusarium solani f. sp. pisi and Pythium ultimum in soil and rhizosphere soil; if treating henbit or downy brome with glyphosate increased root colonization and infection by E solani f sp. pisi or P ultimum; and, if henbit and downy brome are hosts of E solani f. sp. pisi or P ultimum. Pythium ultimum populations increased only in soil containing glyphosate- treated henbit. Fusarium solani f. sp. pisi and P ultimum populations increased in rhizosphere soil from glyphosate-treated henbit, while only P ultimum populations increased in rhizosphere soil from glyphosate-treated downy brome. These results suggest that peas planted in soil where either downy brome or henbit had been treated with glyphosate could be exposed to higher populations of E solani f. sp. pisi and 1? ultimum. Root colonization and infection, plant height, and root weight data indicated that henbit and downy brome are alternate hosts of P ultimum. E solani f sp. pisi colonized, but did not readily infect roots of downy brome and henbit.
Keywords: Rhizosphere, host, colonization, infection, Fusarium, Plant roots, Peas, Plants, Soil water, Orchard soils, Silt loam soils, Rhizosphere, Glyphosate, henbit, Lamium amplexicaule, downy brome, Bromus tectorum, Pythium
Citation: Kawate, M.K., Colwell, S.G., Ogg Jr, A.G. and Kraft, J.M., 1997. Effect of glyphosate-treated henbit (Lamium amplexicaule) and downy brome (Bromus tectorum) on Fusarium solani f. sp. pisi and Pythium ultimum. Weed Science, pp.739-743.
