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Disease or nutritional deficiency? #876660

Asked July 10, 2024, 12:23 PM EDT

Hello! I am growing bush beans for the first time, using a newly established raised garden bed (garden soil, perlite, worm casings). The bed is surrounded by wildlife netting on stakes and insect netting over hoops. Everything else is thriving in equally prepared beds, but the beans are not. My first thought was nutritional, second Mosaic virus. However, images found online of Mosaic don't present exactly like this, and my prep work should rule out a nutritional deficiency. Pertinent information includes the following: these seeds were germinated in peat pods; the seeds were heirloom (little to no resistance), watering has been adequate.

Delaware County Ohio

Expert Response

Dear Betty,

Indeed your beans do look like they are failing to thrive.   It is difficult to diagnose the problem without a close up of the leaves. But, I am sending you some information that may better help you look at your leaves and determine the problem.  After looking at the possible diseases of beans I would agree that it does not look from here like that is the problem, but I am sending you some information on bean diseases.

the first is for root rot. You would need to pull up a bean to determine if that is the problem.

Bean: Fusarium root rot | Hortsense | Washington State University (wsu.edu)

Additionally, here are is some information on bacterial diseases. I doubt that this is your problem, but sending the information for your benefit in the future:

Bacterial Diseases of Beans | Cornell Vegetables

Your problem may actually be one of a nutrient deficiency. This next page will help diagnose nutrient deficiencies. I know this is for soybeans, but I think it is a close enough cousin to green beans to give you some idea of the nutrient problems:

Symptom Identification Key for Nutrient Deficiencies in Soybeans | CropWatch (unl.edu)

This is additional information on nutrient deficiencies and how to address them:

az1058 (arizona.edu)

A soil test is also a good help in determining what your plants need to thrive. Most OSU Extension offices offer soil tesing kits for sale, or can direct you where to obtain one. The soil and tissue testing labs will assist you in interpreting the results. Here is more information on soil testing for Ohio lawns, landscapes, fruit crops, and vegetable gardens

Additionally, here is a factsheet on growing green beans in the home garden:

http://www.gardening.cornell.edu/homegardening/scenef57c.html

Good news! If you must amend the soil and start over, there is still time to grow a bountiful crop of green beans. Best of luck in your gardening, 

Sue Schillig Replied July 10, 2024, 7:17 PM EDT

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