Research Library

Early Blight & Brown Leaf Spot

Early blight (caused by Alternaria solani) is a common problem in southern Idaho.  

This disease can destroy leaves and cause tuber blemishes after harvest.  Varieties differ in susceptibility to this disease.  Additionally, plant fertility is an important component to reducing the severity of disease.  

Many fungicides are available which can help suppress disease to manageable levels.  A related disease called brown leaf spot (caused by Alternaria alternata) can also be problematic on potatoes, but this is not as aggressive as early blight. 

Additional Resources

No Results Found

The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.

Managing Late Blight in Southern Idaho in 2016

Late blight was positively confirmed in several counties in eastern Idaho in 2015. This increases the risk of the disease appearing again in 2016. The resources here will help you manage this devastating disease.  Presentations were given in American Falls and...

New Potato Webcasts Available

New resources are now available to help manage potato diseases. New webcasts are now open for public access at Focus on Potato.   • Stubby-Root Nematodes and Corky Ring Spot of Potato - George W. Bird, Michigan State University, September...

Weed Control in Potatoes – 2015

Recent rains have made weed control in potatoes difficult in 2015.  Dr. Pamela J. Hutchinson from the University of Idaho discusses options for managing these weeds. From Dr. Pam Hutchinson at the University of Idaho: I’ve had many calls about weed control in...

Stripe Rust in Southern Idaho, 2015

Stripe rust has been found in many fields in southern Idaho.  Dr. Juliet Marshall and others at the University of Idaho have provided resources to help growers make effective disease management decisions. From Dr. Juliet Marshall, University of Idaho:  ...

Miller Research Potato Pest Management Workshop

2013 Miller Research Potato Pest Management Workshop was December 16 and 17 in Rupert, ID. Miller Research LLC held its annual potato pest management research meeting Monday, December 16 and Tuesday, December 17.     Copies of the presentation handouts can...