New research leads to improved anthracnose management in peppers

Continued from page 14

Table 2 provides an example of a fungicide program based on the fungicide efficacy trial and should be used only as a reference for those managing this new anthracnose caused by Colletotrichum species. These fungicides are also effective on the other Colletotrichum species present in Ontario that may still cause disease on peppers.

Pepper growers should keep anthracnose top-of-mind as planning continues for the 2023 field season. Reach out to Amanda Tracey (amanda.tracey@ontario.ca) or Katie Goldenhar (katie.goldenhar@ontario.ca) for any questions or concerns regarding this disease.

References

A.P. Keinath, S.H. Zardus, and V.B. Dubose, and G. Rennberger. (2021) Evaluation of All-America Selections peppers, 2020. Plant Disease Management Reports. Vol 15: V040.

Goldenhar, K., Tracey, A., Trueman,

C. & Dufton, K. (2023). Evaluation of fungicides for control of anthracnose on peppers in Ontario, 2022. Plant Disease Management Reports. Vol 17:V050.

Toporek, S. M., & Keinath, A. P. (2021). First Report of

Table 2. An example fungicide program for control of pepper anthracnose for the season. Fewer or more than 12 applications may be needed, depending on field history, variety, weather, etc. Always consult product labels before use.

Colletotrichum scovillei Causing Anthracnose Fruit Rot on Pepper in South Carolina, United States. Plant Disease, 105(4), 1222-1222. https://apsjournals.apsnet.org/doi/full /10.1094/PDIS-08-20-1656-PDN

Amanda Tracey is an OMAFRA vegetable crop specialist with responsibility for tomato, pepper, eggplant, sugarbeet and table beets. Katie Goldenhar is OMAFRA plant pathologist – horticulture crops.