Published online by Cambridge University Press: 12 June 2017
Since the aerial brush control spraying operations in northern Minnesota have little research basis, the Lake States Forest Experiment Station has been carrying on some fundamental.studies aimed at improving the results of this increasingly important aid to forest management. These consist of analyzing two factors basic to all foliage spraying jobs whether they are done from the air or from the ground. These are:
1. The minimum amount of herbicide (in terms of acid equivalent) required to control a unit-area of brush of a given species and density, and
2. The minimum amount of solution needed to distribute the herbicide uniformly over the sprayed area.