Insects Affecting Cottonwood in Forest Nurseries
A series of stem and trunk borer control tests on cottonwood were conducted at the Mississippi Forestry Commission's nursery at Winona, Mississippi, by broadcast application of systemic insecticides for borer control. The broadcast applications of Di-Syston, Thimet, and Temik were purposely applied at very high rates because of the close distance (in row and between rows) of the cottonwood. The systemics were applied with a cyclone seeder from a hydraulic lift on a tractor to only two outside rows in each plot. The materials were applied on July 7, 1967, and were not worked into the soil. During the winter months, 20 saplings were cut randomly from each treatment plot. Each sapling was divided into a lower, middle, and upper section. The larvae found infesting these saplings were recorded according to the section in which they were found.
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Author(s): John Little
Publication: National Nursery Proceedings - 1968
Event:
Southeastern Nurserymen's Conference Proceedings II
1968 - Alexandria, LA
Section: Cultural Techniques
