Help! Just found some disease!
- Thread starter Derek Reese 29
- Start date
Derek Reese 29
5 year old buck +
I think I have some just didn’t know if it would be effective this close to fall?
Nothing you're going to do about CAR once the symptoms appear. Next spring spray with Immunox every 7-10 days during the spring
Could be cedar pear rust. Very similar. So are cedar quince rust and cedar hawthorn rust
extension.okstate.edu
ipm.missouri.edu
Could be cedar pear rust. Very similar. So are cedar quince rust and cedar hawthorn rust
Pear Rust - Oklahoma State University
Pear trees are planted in the landscape for their ornamental spring blooms or edible fruits. They are tolerant of most soils and adapt readily to many regions. However, pear trees are susceptible to a disease called pear rust that causes spots on leaves and destruction of the fruit.
extension.okstate.edu
Cedar-Quince Rust (Kaitlyn Bissonnette)
Cedar-quince rust is a disease caused by a fungus called Gymnosporangium clavipes, which can infect about 480 species in the rose family, including apples, mountain ash, flowering quince, and hawthorn, and members of the Cupressaceae family such as the eastern red cedar (also known as red...
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bigboreblr
5 year old buck +
Cedar Rust come from different fugni of the same type. The more reddish could be the leaf is just dying like it does seasonally. You can spray, but likely wont do much. ID any cedar nearby. You might want to spray or eliminate them if possible.
Bonide fruit tree spray I generally put in 3oz/gal. Or Keep at standard mixture, but add a little more captan for fungus or malathion for insects.
Might be digging my fruit tree spray out. I planted a couple of spray roses for the wife. They're loaded with aphids. I hoses them off while watering, but need to spray those guys. Need to break out the roundup to spray a few perennial things growing in my apple tree woodchips.
www.thompson-morgan.com
Your color looks more reddish, but the stuff growing on those spots looks alot alike.
I would spray those trees when young to get good growth the 1st few years. I do that with catepillars. Might have to spray for scab for my wife's favorite varieties. Almost think cedar apple rust is easier than dealing with scab.
Bonide fruit tree spray I generally put in 3oz/gal. Or Keep at standard mixture, but add a little more captan for fungus or malathion for insects.
Might be digging my fruit tree spray out. I planted a couple of spray roses for the wife. They're loaded with aphids. I hoses them off while watering, but need to spray those guys. Need to break out the roundup to spray a few perennial things growing in my apple tree woodchips.
Pear Rust | Garden Pests & Diseases | Gardening Tips | Thompson & Morgan
If your pear leaves and fruit are suffering, it could be pear rust. Find out more about it and how to deal with the condition in our article.
Your color looks more reddish, but the stuff growing on those spots looks alot alike.
I would spray those trees when young to get good growth the 1st few years. I do that with catepillars. Might have to spray for scab for my wife's favorite varieties. Almost think cedar apple rust is easier than dealing with scab.
Captan is of little use for cedar rust
"Captan, though labeled for control of apple scab, is not effective in controlling rust diseases. "
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"Captan, though labeled for control of apple scab, is not effective in controlling rust diseases. "
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Derek Reese 29
5 year old buck +
Don’t have any cedars that I know of within 200 yards but do have some hawthorns around..very weird
Red cedars or other junipers are required to be an alternate host. Spores can probably travel miles.
Cedar Apple Rust & Apple Scab Spray Now | Nebraska Extension
Fruit trees are or will soon bud out. This is an important time to begin applying fungicides to trees that had a fungal leaf disease last season. Apples and crabapples are often infected by apple scab and cedar apple rust. Both cause spots to develop on leaves followed by leaf yellowing and...
b116757
5 year old buck +
I don’t generally spray if the trees can’t make it on their own then I don’t want them, waste of my time. I’d simply replace it with a diffrent pear tree or maybe a crabapple tree. I’ve never had pear rust at my place but one of my coworkers only a few miles away has had issues with it in his yard. Trouble with many of the new trees for deer offerings is they haven’t gone thru any actual academic trials so their disease resistance is completely unknown I don’t buy too many of them at a time so I can evaluate their performance on my site before planting a lot of any one type. Now if you drive around and find some very old trees in your area that have survived many years I’d be looking to collect scion wood from those known locally tough trees.
Derek Reese 29
5 year old buck +
I have some copper fungicide would that work also, when I spray now and in the spring?
I have no experience with copper, other than including Kocide with dormant oil in early spring. That is for a bit of fireblight control, but it's effectiveness is questionable.
If you're going to spray for CAR, go ahead and pick up some Immunox. Myclobutanil is the active ingredient. There are brands other than Immunox available, generally in larger quantities and stronger concentrations. If you plan to spray for CAR regularly, you may want to look at something like Rally. Immunox is pretty cheap and highly effective when applied correctly. I wouldn't waste my time and product spraying anything for CAR now.
If you're going to spray for CAR, go ahead and pick up some Immunox. Myclobutanil is the active ingredient. There are brands other than Immunox available, generally in larger quantities and stronger concentrations. If you plan to spray for CAR regularly, you may want to look at something like Rally. Immunox is pretty cheap and highly effective when applied correctly. I wouldn't waste my time and product spraying anything for CAR now.
bigboreblr
5 year old buck +
There some neet oil with some added fungicide you can spray right before the buds break. Also good for killing alot of bug eggs and dormant smaller ones under the bark in nooks. neem max think its called. Copper is a good one though.
I live with 3 large orchards in my town and literally tens of thousands of abandoned trees everywhere. Bugs will always be a battle. Just dont ant to add more battles. Only exception might be scab because y wifes really likes a few that get it.
I have 2 pears at home, bartlet and kieffer. not doing so hot this year, last year they were growing great. Got an overall orangish/red hue to the leaves. Maybe put on 6 inches of growth. Not sure what it is, might just be soil isn't good for it.
Good or bad, let it go a year or two and debate whether to topwork it or not. Not sure about pears, but got 3 trees growing ok with tons of cedar rust on it. Not a death sentence for trees really.
I live with 3 large orchards in my town and literally tens of thousands of abandoned trees everywhere. Bugs will always be a battle. Just dont ant to add more battles. Only exception might be scab because y wifes really likes a few that get it.
I have 2 pears at home, bartlet and kieffer. not doing so hot this year, last year they were growing great. Got an overall orangish/red hue to the leaves. Maybe put on 6 inches of growth. Not sure what it is, might just be soil isn't good for it.
Good or bad, let it go a year or two and debate whether to topwork it or not. Not sure about pears, but got 3 trees growing ok with tons of cedar rust on it. Not a death sentence for trees really.
Derek Reese 29
5 year old buck +
Good idea to spray all my fruit trees (~6 dozen) with Immunox as a precaution or is it cost prohibitive?
Probably depends who you ask. I spray all my people fruit trees multiple times annually with several different products. I don't spray wildlife trees unless they get hammered by defoliating insects.
Some trees/areas get CAR terribly every year. Some don't.
Cost prohibitive is subjective. I don't find spraying multiple products multiple times prohibitive, but that's just me. I'm not poor, but I'm sure not rich.
My answer to your question would be yes, it's a good idea. I'm sure others here will disagree.
