sphere wrote:
Sorry if I missed it: what do you use to spray, and is it something I can do from the ground with these trees? They’re probably 30 years old, mostly left unchecked, as best I can tell, so if I need to spray the leaves in the canopy we’re talking crop duster duty.
I’ve been coming across Neem Oil as a good all-around product, but I have zero experience with any of this.
I will use a dormant oil spray this weekend. I am using a combination of captan (fungicide) and malathion (insecticide) during the year. I will also use something like Mancozeb (different kind of fungicide) once or twice to control a couple other diseases.
Here is a pretty good spray guide -
https://ag.purdue.edu/...ts/pdf/2012ID168.pdf - ETA - that I see I posted just above, thought it was a different thread
Bonus PITA this year is that due to the plague it appears captan will be in short supply. I was going to order from these guys,
https://www.keystonepestsolutions.com/ until I found 2 x 5 lbs bag at my dad's house last weekend when I was pruning his trees. Now he has 1 x 5 lbs bag :)
I like those two because they have been around for ages and are pretty dang safe. Malathion has a short half like, 4.5 days, so you may need to spray more often than other insecticides but that also means it has pretty much broken down when you go to eat them as long as you aren't spraying while you are picking.
Here's another thing to look for. Bonide makes some combo mixes that are convenient. Look at the labels before you use them. They don't mention it and it seems like garden centers aren't smart enough - Bonide "Fruit Tree Spray" has as an insecticide "carbaryl". This is the active ingredient in Sevin. Sevin is a great insecticide. I use it a lot. But when you spray it on young apple fruit (and grapes, pears, and I am sure others) it acts as a chemical thinner. Meaning it will make your trees drop a good amount of the fruit if you spray it at full strength. People use Sevin intentionally to thin the fruit but they use a lower concentrate and know what they are doing. I made this mistake for several years.
They make another that is "Fruit Tree and Plant Guard" that uses a different insecticide.
That spray guide can be overwhelming. It really isn't that hard. Most of them are the same basic mix, I mix my own spray now, just follow the directions for the product you use and you can combine them with no issues. Malathion is available everywhere in great big jugs that will last multiple years most likely. Fungicides are available anywhere you find fine agricultural products for sale :).
You'll notice there are 4 sprays before they fully bloom. Don't spray while they are blooming or you kill all the bees. The early spraying is the most important IMO. If you want pretty fruit spray diligently during the growing season.
Walking though the orchard and grabbing random fruit is kind of cool.
I'm beginning to think that we are much more fucked than I thought.