Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Impacts Of Smooth Pigweed (Amaranthus Hybridus) On Cover Crops In Southern Ontario, Heather Vanvolkenburg, Frédérique C. Guinel, Liette Vasseur
Impacts Of Smooth Pigweed (Amaranthus Hybridus) On Cover Crops In Southern Ontario, Heather Vanvolkenburg, Frédérique C. Guinel, Liette Vasseur
Biology Faculty Publications
Amaranthus hybridus is a noxious weed in Ontario, with demonstrated allelopathic properties that can lead to decreased agricultural production. We tested the germination and growth of five cover crop species exposed to A. hybridus extracts, and to dried or fresh materials in soil. A germination index was calculated, and the dry weight of plant organs were measured to quantify responses to treatments. All species had reduced germination (≤29%) in 100% extract. Trifolium pratense had significant root weight reductions in extract (52%) and dried (72%) treatments, whereas shoot weight only decreased (48%) in dried treatment. Medicago sativa shoot weight decreased (52%) …
Assessing Seed Handling Processes To Facilitate A Community-Engaged Approach To Regional Forest Restoration, Meredith Cobb, Michaela J. Woods, Ryan Mcewan
Assessing Seed Handling Processes To Facilitate A Community-Engaged Approach To Regional Forest Restoration, Meredith Cobb, Michaela J. Woods, Ryan Mcewan
Biology Faculty Publications
In the Midwestern United States, there is a strong management impetus toward reforestation to replace trees lost to due to tree mortality and to establish forests on previously cleared properties. Here, we describe a public outreach and volunteer effort that aimed to generate positive, community-engaged restoration outcomes and report on a practical experiment involving seed handling. We obtained tree seeds that were donated by members of the community to local land managers. We evaluated the size of the seeds collected and tested the influence of common stratification media (none, sand and vermiculite) and seed size on germination success of three …