The purpose of this trial was to evaluate the effects of planting date as to the necessity for in furrow thrips control. Thrips were then washed onto filter paper for counting, and adults were identified to species by use of a dissection microscope. There were three planting dates evaluated during this study, however, the last planting date was delayed because of wet field conditions, and delayed even further because of continued wet conditions during emergence.
Results presented here are for only the first two planting dates.
Generally speaking, there were fewer immature thrips in the second planting date than in the first planting date. The same trend for reduced thrips in the second planting date is also observed for tobacco thrips. For individual insecticides, all treatments reduced the number of immature thrips present throughout the trail for the first planting date, however, there were no differences in immature thrips on the second planting date. The reduced numbers of thrips can possibly be attributed to attractiveness of the plant, the first planting date having approximately two weeks of growth before the second planting date had emerged. For information about this page, contact Jack Reed or Chris Jackson .