Delahaut, K.A. 2001. Garden Facts: Onion Thrips. University of Wisconsin-Extension. Accessed at: <http://learningstore.uwex.edu/Onion-Thrips-P562.aspx>
Published by the University of Wisconsin Extension and written by Karen Delahaut, Onion Thrips is a part of the Garden Facts series. Onion thrips are a common annual pest of onions, but can attack nearly all garden crops. This short fact sheet goes over the appearance, symptoms and effects, life cycle, and cultural and chemical controls of the onion thrip.