Menu

Bacterial Leaf Streak of Corn: New Disease Confirmed in the U.S.

Bacterial leaf streak of corn is caused by the bacterial pathogen Xanthomonas vasicola pv. vasculorum. The disease was first reported in the Republic of South Africa in 1949. The disease was confirmed on Aug. 26, 2016, in Nebraska, Colorado, Illinois, Iowa and Kansas. It appears as though this disease is widely distributed throughout the Corn Belt. However, no research data is available to predict potential impact of this disease on yield.

Bacterial leaf streak symptoms look similar to other diseases, particularly the fungal disease gray leaf spot. Gray leaf spot produces lesions with straight margins along the veins of the leaf, unlike bacterial leaf streak, which produces wavy margins. Symptoms of the disease have been seen as early as mid-June in Nebraska. Diagnosis can be difficult, so a sample should be submitted to diagnostic services or a crop pathology lab.

As the disease is caused by a bacterial pathogen, fungicides will not control this disease. Although bactericides are labelled for use on corn, their practicality and potential efficacy is limited. Crop rotation and debris management may be helpful. Additional research is needed and is ongoing in several states.

Additional resources:

Source: Michigan State University 

Recent News

New Study Shows Producers Where and How to Grow Cellulosic Biofuel Crops
1/18/2018

A new multi-institution report provides practical agronomic data for five cellulosic feedstocks, which could improve adoption and increase production across the country.

In Sweet Corn, Workhorses Win
1/17/2018

When deciding which sweet corn hybrids to plant, vegetable processors need to consider whether they want their contract growers using a workhorse or a racehorse.

USDA Reports Provide Some Surprises
1/17/2018

The USDA released a set of reports on Jan.12 containing information with implications for corn and soybean prices in 2018.

Your browser is out-of-date!

Update your browser to view this website correctly. Update my browser now