Planting and maintaining a border of trees around agricultural fields will help a family of flies that, in turn, is important to crops, according to a recent University of Alberta study.
Treed field borders supplied over 33 times more hoverflies to canola fields than grassy borders, the research shows.
That's good news for showing how to get the most benefit from the insects in supporting the crops, says Rachel Pizante, a PhD student in conservation biology who led the study.
