A Study of the Effect of Herbicides on Mycorrhizae Associated With Native Warm Season Grass

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.

Name thesis:degree_name

Master of Natural and Applied Science in Agriculture

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

College of Agriculture

Year

2003

Author dc:creator

• Medley, Kendra

Contributors dc:contributor

• Pam Trewatha

• Agriculture

Statement dc:rights

• © Kendra Medley

Repository record dc:identifier

https://bearworks.missouristate.edu/theses/880

OAI identifier oai:identifier

oai:bearworks.missouristate.edu:theses-1881