Recommended rates often list a higher, moderate, and lower rate of use. The lowest rate is to be used when there is a known phytotoxicity issue in a specific crop or the botanical insecticide is being used as a preventative. The lower rate, most times, can be sprayed repeatedly on crops without risks of phytotoxicity and keeping pest populations at bay. The highest rate is often for rescue use, or rather when the pest population has grown to a point where a more aggressive spray is needed.
Knowing what rate to use on crops is up to the grower. If there are known phytotoxicity issues in the crop species, then a lower rate would be wise. If you are looking to prevent pests throughout the season, you would want to spray at a lower rate consistently.
Understanding the pest economic threshold is also very important for proper spray applications. Growers can consult a Pest Control Advisor (PCA) or can research economic thresholds of pests online. One good resource for growers is the University of California Statewide Integrated Pest Management Program.
Many botanical oil-based pesticides have a recommended period between sprays – referred to as application intervals in a label. This allows insects to emerge and the pesticide to attack different life stages of the pests.
“Kemin products, such as TetraCURBTM, have very low risks of phytotoxicity, with high efficacy. Making them a great insecticide for growers who want to start using botanicals,” said Hull.
If you are looking to add a highly effective, easy-to-use product into your integrated pest management program, check out TetraCURB!