This last post in this series summarizes the strategy behind the spray program for Thrips parvispinus control in mandevilla in Ontario.
After several years of refinement to bring down costs while maintaining efficacy, several growers have been using this program, or some version of it, for several years. This program focuses on critical “spray periods” versus weekly spraying, and takes advantage of spot sprays, focusing on sensitive varieties.
That we’ve found a successful and economical program in mandevilla is quite an achievement, given the lower number of pesticide available for this pest in Canada versus the U.S., and the long growth period of the crop (July – April).
Read on for how we’ve put this all together through trial and error, and for cost comparisons to more traditional spray programs.
Continue reading “Mandevilla IPM Program Part 4: Putting Together a Cheaper Spray Program”