0
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Bluelake bush beans

Bean    None Given

Could you please tell me what you think this is?Iv not seen anything like this before in my many years of gardening.The weather here in Oregon has gone from the 80s one week to the 60s the next with lots of rain.Could this be the problem?I do believe I planted a bit earlyer then years past,that hot weather tricked a lot of us Oregonions..


Posted by: Tracy lane (1 point) Tracy lane
Posted: May 25, 2016




Answers

1
point
Hi Tracy,
From first glance, your damage appears to be a results of cooler temperatures. According to PlantVillage, beans should be direct seeded in the garden in when the soil has reached a temperature of at least 15.5°C (60°F), with the optimum temperature for germination being between 15.5 and 29°C (60–85°F). The beans also prefer direct sunlight... Are they getting enough light? Also during cooler nights cover your plants with plastic to conserve the soil temperature. Hope this helps.


Posted by: Megan Wilkerson (12 points) Megan Wilkerson
Posted: May 25, 2016




1
point
Tracy,
It looks like sunburn after rain on young and rapidly growing leaves. Direct sunlight after good rain can cause such symptoms. I don't think there is any infection, but dead tissue can be colonized by saprophytic or semi-pathogenic fungi.


Posted by: alex ignatov (33 points) alex ignatov
Posted: May 26, 2016




0
points
I agree with the sunburn theory, I see this in greenhouse grown beans that have not seen the sun for a few days. then one sunny day boom. any leaf can be affected, but they tend to adjust as the summer rolls in.
g


Posted by: Gregory Inzinna (3 points) Gregory Inzinna
Posted: June 9, 2016




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