Thought I'd come back and update this thread with some findings.
I lost all my peaches this year, all fell off
Started the season off with the same spray schedule, think I posted about it and nothing changed. No apparent reason for the peaches to fall and never did figure it out.
So, Mid July the tree's were beautiful, no leaves falling off and no yellow spots like I posted in the pictures in the last two pages of this thread. What changed?
I'm not spraying the tree's that's what changed.
What I also found out was the captan I was using was too much, well DUHHH!!! Riggle you done mentioned that last year but I was going by what the Horticulturalist at the university of Kentucky was advising me 6.5 Tablespoons to 2 gallon. Even after the peaches fell off this spring I questioned the captan again and he said No, that didn't do it.
Further questioning it yielded the fact 6.5 Tablespoons was too much and I told him he was the one that gave me that info and when I questioned cutting back on it in 2012 I was told no, I'd be at risk of diseases????
Now, 1.6 Tablespoons to a gallon was the correct rate
Too F$%ken late now my peaches has fell off.
Mid July I decided WTF I'm going to test the captan at 1.5 Tablespoons per gallon and see if the leaves turn yellow:
• With beautiful foliage on the peach trees and no signs of leaves falling off nor yellow spots originally thought to be bacteria spots. As a test before next season sprayed Malathion & Captan both separately at recommended rated each in separate locations on the peach trees to see if either would cause damage. Captan @ 1.5 Tbspoons to gallon on far right tree and Malathion 1 oz. to gallon on the tree in the middle.
As of August 19 no leaves falling from either tree, no damage or yellowing and falling off of leaves and so no injury present. Think next year can start out with this rate of captan and be considered safe; 1.5 Tablespoons per gallon.
So why didn't the peaches fall off last spring?
I didn't start out using the captan right after the blooms fell that's why:
Must have given the peaches just enough time to mature enough to withstand that dose.
April 3, 2012
• With some beautiful dime size peaches and ¼ inch diameter cherries sprayed for fungus and insects with Spectracide Immunox for fungus 1 oz./gal & Spectracide Malathion for insects 1 oz./gal. mixed both together and sprayed at once. Used 3 gallon this time but add another gallon next time to include apple tree which is still blooming.
April 17, 2012
• Repeat application of Immunox and Malathion. Used 3 gallon which covered everything including grape vine.
April 18, 2012
• Was told to include Captan 50W in the mix so sprayed separately, used 3 tablespoons for 4 gallon. Was told ½ tablespoon per gallon so improvised to be safe. Next spraying, include with Immunox and Malathion.
April 24, 2012
• Due to what looks like plum curculio damage sprayed Seven concentrate at a rate of 3 oz per gallon to control damage. Next spraying, include with Immunox and Malathion and Captan. Used 3 gallon which covered peach and apple trees.
May 1, 2012
• Repeat application of Immunox and Malathion along with seven at a rate of 3 oz per gallon and Captan at 6.5 Tablespoons per 2 gallon mixed all together and spayed at once.
Note: Shortly after applying captan at this rate had leaves starting to turn brown and fall. Could be coincidence but was told this was bacteria spots but also hear possible Captan injury?? Next application cut captan back to 4 tablespoons/2 gallon.
May 15, 2012
• Repeat application of Immunox and Malathion along with seven and Captan. On advice of John stayed with the 6.5 tablespoons of captan per 2 gallon. Only used two gallon as skipped spraying the cherry tree’s and grape vines. Only a few apples to spray and 3 peach tree’s.
Notes: I would keep your Captan rate at 6.5 tablespoons per 2 gallons. If you get the rate too low you won’t get the control. Captan is a fungicide and will have not have any impact on bacterial diseases. John
So next year, 1.5 Tablespoons captan / gallon