• Post Reply Bookmark Topic Watch Topic
  • New Topic

Fasciation affecting my squash, advice  RSS feed

 
Gilbert Fritz
Posts: 1280
Location: Denver, CO
21
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Fasciation (deformed, twisted growing points) is appearing on my squash plants. I am assuming it is caused by aster yellows, a bacterial-like pathogen spread by leaf hoppers. (There are a lot of leaf hoppers here this year. ) I could, of course, pull out affected plants, but give its incubation time (10 days before symptoms appear) it has probably already infected all the squash, cucumber, and melon plants on my plot; over a 8th of an acre of cucurbit crops. This will be a fairly big loss for me. What can I do to halt spread? And, if the plants are already infected, what can I do? The standard horticulture websites say there is no treatment. However, I did see a mention that high temperatures deactivates the pathogen in both plants and insects, so it does not occur in hot climates. Would covering the plants with low tunnel plastic help?

Also, by pulling out currently affected plants, I would loose any crop they might produce despite the aster yellows. Do you have experience with this? Do such plants have any yields at all? Would it be worth keeping them?

Finally, I'm not 100% sure that I've diagnosed the problem correctly; I'm including a picture of a plant with a similar problem from last fall. Last year, the problem showed up too late to do much damage
IMG_5358.JPG
[Thumbnail for IMG_5358.JPG]
 
Gilbert Fritz
Posts: 1280
Location: Denver, CO
21
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
more pictures
IMG_5359.JPG
[Thumbnail for IMG_5359.JPG]
IMG_5360.JPG
[Thumbnail for IMG_5360.JPG]
 
Time is mother nature's way of keeping everything from happening at once. And this is a tiny ad:
Rocket mass heaters in greenhouses can be tricky - these plans make them easy: Wet Tolerant Rocket Mass Heater in a Greenhouse Plans
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!