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Entry Date
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Nick Name
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Location
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Wednesday, August 08, 2018
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Matt D.
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Connecticut
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Entry 59 of 62 |
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I Spy Image 1
So, I should clarify that spraying copper will not do anything for the systemic bacteria that were found as the result of the bacterial wilt. However, what it will help combat is the Angular Leaf Spot that was also diagnosed on my leaves (which is also bacteria).
What made this Angular Leaf Spot (ALS) unique is that visually in the field it has a striking similarity to Downy Mildew. Both the Plant Pathologist and I were both in agreement that based on initial visual inspection it looked like the feared Downy Mildew. However, under the microscope revealed high amounts of bacteria and no sporangia (spore producing structures) characteristic of Downy Mildew. ALS can be controlled with a bactericide, as again, fungicides only work on fungi.
However, to improve your ability to spot potential problems I am including a bit of a game. Notice my thumb in the image for size comparison and realize this is the level of scouting that I do on my leaves. I want you to look at the image below and see if you can find the following…
4 Powdery Mildew clusters
1 Angular Leaf Spot “hit” that actually looks very much like Downy Mildew
I will post an image in about 2 days with each highlighted so you can go back and compare to see if you found them all. Enjoy and be glad that this is not in your patch… or is it?
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