A root and stem rot disease called ashy stem blight, caused by the fungus Macrophomina phaseolina, can cause beans to decline, especially in hot (95 to 107 degrees F), dry weather. The fungus can contaminate seed and infest soil and be spread by soil movement. This fungus has a wide host range, meaning it can infect many different plant species. Other root and stem rot diseases of bean, caused by soilborne fungi such as Rhizoctonia, Fusarium, and Pythium, can also cause beans to decline and die, often earlier in the season. To manage ashy stem blight, use crop rotation and plant certified disease-free seed.
These resources are brought to you by the Cooperative Extension System and your Local Institution
Welcome
eXtension is an interactive learning environment delivering the best, most researched knowledge from the smartest land-grant university minds across America.
eXtension: more mind reach
Have a question? Try asking one of our Experts
What causes garden beans to decline and die late in the season?
Last Updated: January 25, 2012
Have a specific question? Try asking one of our Experts
Unlike most other resources on the web, we have experts from Universities around the country ready to answer your questions.
