While not specifically designed for disease maintenance, there are many instances where to application of a growth regulator has had a positive impact on the severity of symptom expression of certain diseases.
There are two different growth regulators to utilize depending on the type of plant being treated: Cambistat®, which is used for trees, and Trimtect®, which is used for shrubs, vines, and groundcovers. Cambistat is applied to soil and may be applied anytime that this ground is not frozen or saturated with water. Trimtect is applied by foliar spray and may be used during the growing season.
A Diagnostic Guide is designed to help you identify a pest issue and management solutions. Always refer to product label for all rates and approved uses. Some images courtesy forestryimages.org. Use of the images does not imply endorsement of treatments by forestryimages.org