A Study of the Effect of Herbicides on Mycorrhizae Associated With Native Warm Season Grass
Date of Graduation
Master of Natural and Applied Science in Agriculture
College of Agriculture
Imazapic, imazethapyr, and imazapzyr were applied to seedlings of Tripsacum dactyloides, Andropogon gerardii, Panicum virgatum L., and Sorghastrum nutans (L.) Nash. growing in native prairie and sterile soil. All herbicide treatments caused a negative effect on plants and mycorrhizal colonization. Plant survival was directly correlated with the presence of mycorrhizae and lower rate of herbicides applied. Herbicide application appeared to have little effect on colonization and intensity rate of mycorrhizae. Imazapic, imazethapyr, and imazapyr were applied to mycorrhizal spores (Gigaspora rosea) growing on mycropore filters in sand. After 26 days incubation the dark, hyphal growth was measured. The herbicides reduced hyphal growth.
© Kendra Medley
Medley, Kendra, "A Study of the Effect of Herbicides on Mycorrhizae Associated With Native Warm Season Grass" (2003). MSU Graduate Theses. 880.