Early Blight, Old Leaves or Something Else

17 years ago

Well, I think I may have the starts of some early blight in my high tunnel. After searching some and looking at pictures, this is just my thought. Please look at the pictures and let me know what you think.

Thanks,

Jay

Picture inside of High Tunnel

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Comments (4)

mulio
17 years ago

This looks like septoria. Their lesions stay small and often have a whitish center.

This is early blight. Their lesions may start small but eventually grow in a ring or "target-like" spot pattern shown in this picture.

Most of the other pictures look to be nutritional age stress (they have sizing fruit I assume?) and or possible signs on a few of leaf mold issues (look on the bottom side of leaf for patchy rusty looking areas)

Get more airflow in there. Take off the end sides if you can. Also mulch those rows and put mulch right up against the plant. Be sure to cover that soaker hose with mulch. Each disease I listed can be controlled by "dry". These are all the most common leaf diseases seen in Ks.
jrslick (North Central Kansas, Zone 5B)
Original Author
17 years ago
Mulio-

Thanks for the info. I keep wanting to mulch, but I just haven't had time. With 4 kids, I am really stretched thin. The sides of my hoop building are pulled up 4 feet, I don't think you could see that in the picture. I can open the ends up a little bit more, but I don't want to take them off due to severe storms. The building fairs much better with solid sides all around.

These spots started showing up in the last 7-10 days. The wind has been very light (Uncommon for us in this part of Kansas). That could explain it.

So, I will remove any affected leave, mulch and get more ventilation. Do you think I should be ready to spray or spray to help prevent the spread?

Thanks,

Jay
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mulio
17 years ago
Four workers kids you say?

I knew the sides rolled up. Just still need more airflow. The hoophouse is holding in the humidity. If temps keep up you could have problems with blossom drop and fruit set. If you have a fan run it to vent air out.

If you wanted to do a preventative spray program, you should have started already. Generally just 2 weeks after setting out.
jrslick (North Central Kansas, Zone 5B)
Original Author
17 years ago
Well tomorrow and today the wind was howling. 20-30 mph. It was like a wind tunnel. I am sure there was plenty of breeze today. I will work on taking out the end triangles. I just can't take the door off very easily. I will have to make it work.

Yes I have four girls. 7,5, 3, and 3 months. Time is limited, at times. Also, I am "Daddy Daycare" all summer long. I get up and pick before my wife leaves for work. Squeeze in picking with the kids, if it is cool enough, pick during nap time and then after the kids are in bed, finish picking. It makes for a fun day!