Garlic mustard (Alliaria petiolata) occurrence is known to occur in Kansas but is not widespread. Populations were found near creeks below forested canopies in southern portions of Riley and Pottawatomie Counties, Kansas during April and May of 2013 and 2014. Soil was taken from areas of two garlic mustard populations as well as nearby areas where there was no garlic mustard. One location identified as Mt. Zion was a silty clay loam soil with greater organic matter content and nutrient status while the St. George site was a sandy soil with lower organic matter and available nutrients. Greenhouse pot study using oat as an indicator species was used to determine the effect of history of garlic mustard and location on oat growth. In general, oat plants were taller and had more florets in soil from Mt. Zion as compared to St. George, and also were taller with more florets in soil with history of garlic mustard than no previous history. In general, there were no negative soil feedback effects on oat because of history of garlic mustard.
Morris, Brook and Dille, Johanna A.
"Soil Feedback of Garlic Mustard (Alliaria petiolata) on Oat (Avena sativa) Plants,"
RURALS: Review of Undergraduate Research in Agricultural and Life Sciences: Vol. 11
, Article 2.
Available at: http://digitalcommons.unl.edu/rurals/vol11/iss1/2