0
points
Brown spots and white lines on my bean plants

Bean    NYC

Can someone tell me what are the brown spots and white lines on my bean plants? I cut off a lot of the leaves with the brown spots already. What else can be done?


Posted by: michelle (5 points) michelle
Posted: September 1, 2015




Answers

0
points
Those white lines are Leafminers. I don't have a bean plant but they do appear on my ground cherry plant and my cara cara orange tree. The best thing to do is remove the effected leaves and disposed of them in the trash. I believe those spots are Alternaria leaf spots try a mixture of 1 gal of water and 1 cup of Hydrogen Peroxide or steeping 1 cup of organic cornmeal with one Gal of water over night. Use the liquid to spray the leaves.


Posted by: Seyla (6 points) Seyla
Posted: September 1, 2015




0
points
I think the disease is rust. A fungal disease attacks the leaves, pods and shoots. The first signs of rust are tiny specks or spots on leaves that range in color from orange to rusty-brown, brownish-yellow, purple and red. Left untreated, the spots get bigger and turn into bumpy-looking pustules. Eventually, the pustules break open and release spores that are spread by wind or splashing water. As they land on other plants, the spores infect them, too.

Hot, humid weather favors rust attack, and it can be tough to eliminate.

Use pruning shears to cut away entire shoots that have affected leaves and bean pods. While it's possible to prevent the spread of the fungus by removing individually affected leaves and pods, the fungus may have already spread to an adjacent leaf.


Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: September 11, 2015




You need to log in if you'd like to add an answer or comment.