A Simplified Technique for Counting Eriophyid Mites on Roses that are Endangered by Rose Rosette Disease
Collins, S. B., K. Solo, A. S. Windham, F. A. Hale, Q. Cheng, and M. T. Windham.  2017.  VII International Symposium on Rose Research and Cultivation, Session 7, Poster 6, Angers, France, July 2-7.

Rose rosette disease, caused by Rose Rosette Virus which is vectored by the eriophyid mite, Phyllocoptes fructiphilus, is difficult to control in wholesale and retail nurseries and public and private gardens. One reason for this difficulty is the inability by nursery and landscape professionals and homeowners to determine when eriophyid mite populations begin to increase in their plantings, so as to know when applications of miticides could be applied. Although methodology has been published for counting eriophyid mites, laboratory equipment is often costly (may be in excess of $9,000 (U.S. dollars)) and these costs prohibit many individuals from counting eriophyid mites in their roses. The objective of this study was to develop a method for counting eriophyid mites with materials that were readily available to horticultural professionals and private individuals, and where combined costs of materials would be less than $100. An eriophyid mite counting kit that achieves this economic goal (<$100) has been developed and includes a handbook that describes the kit and how to use items in the kit. The kit allows the user to use a cellphone to photograph the eriophyid mites they are counting. Twelve kits were distributed to nursery owners, professionals who maintain rose gardens, and private garden owners. Each kit recipient was asked to fill out a survey on kit ease-of-use and ability of the kit operator to obtain satisfactory results. The economical eriophyid mite counting kit will be described in our presentation/poster.