Now comes the troubled Granny Smith Apple trees.
Small one first.
View attachment 611426 View attachment 611427 The fruit look good on her ,but almost every leaf has these spots.
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Now the big girl. She's just now starting to show some spots,but she has some dreading off that I can't control and the back spotting look.
View attachment 611428 View attachment 611429 View attachment 611431 View attachment 611432 Sorry for bombing all of these pics,but you asked for it..
Thanks for any tips.
I have not tried spraying anything before ,cause I've wanted to keep organic and didn't know what to use.
STR8
All fruit trees are attacked by fungi and diseases that can cause leaves to curl and wilt or produce spots. Leaf curl and yellow spots on apple trees indicate the presence of diseases or infestations that can adversely affect the apple crop. Proper care, a spraying regimen, pruning and thorough orchard maintenance can help reduce or prevent diseases and pests from damaging your apple trees
Leaf Curl and Yellow Spots on an Apple Tree. the low down.....
Aphids and Leafrollers
If you find new leaves that are twisted, curled and covered with a sticky coating, you should look on the undersides of the leaves. There you'll find tiny fluffy-coated aphids of various colors attached to the leaves. You may also find black sooty mold around them. The mold feeds on the honeydew the aphids secrete. Aphids usually disappear by midsummer, so you may be able to wait out a light infestation. Planting nectar producing flowers or spraying KAMINO + Bio Floret which is technically among other things a yeast and sugar mixture, on to your trees, do this in the morning or at night, not in the mid day sun, will attract aphid predators like wasps, lady beetles and hover flies that will help clear up your aphid problem.
Leafrollers can also cause rolled or curled leaves. You'll find the insects hiding inside rolled leaves. I tend to use a series of microbes to attack and parasite leafrollers, primary one being
Colpoclypeus florus, but i also use tachinids. It might not be easy for you to acquire these and we have no license to sell them mate so i cant supply them even tho i can produce them, sorry. You may have luck sourcing these bio controls locally. I can give you names of what to look for but thats it on leaf rollers, we have some moderate success with the same KAMINO and Bio Floret foliar where symptoms are light, but one can argue this is a waste of time since one or two wont harm a mature healthy tree
Your apple trees can tolerate a light bug problem and still produce a good crop without spraying.
Cedar Apple Rust the yellow spots you have....
If your apple tree's leaves develop pale yellow spots that grow larger and turn orange, you likely have cedar apple rust. The disease is contracted from juniper galls found on eastern red cedars. The galls swell in spring and discharge disease spores on the wind that blow onto your apple trees. Golden Delicious apples are particularly susceptible. The leaf spots won't go away, but they don't spread to other leaves. The best way to control cedar apple rust is to avoid planting eastern red cedar within a half mile of your apple orchard. Rust fungus takes until next season to control. Check nearby junipers for gummy orange-colored galls and destroy them before they germinate. Spray the apple trees in early spring when the buds turn pink. A biocontrol fungus like Trichoderma will help as a bio control for this fungus so foliar KAMINO with Bio Balance Folliar to help relief the stress. Alternatively, use a Sulfur based fungicide if its really bad,
You have wilt mold too, this likely being carried in the mouths of biting pest. KAMINO as a foliar will help this, there are some excellent bio control organisms in the product for many common fruit and root molds.
Apple trees are prone also to PM, in the instances of white PM on the leaves, use a mix of baking soda (bi carbonate of soda) mix 1tsp(5g) to 2.2 pints US (1L) filtered water, add to foliar, spray affected plants and areas.
Hope this helps
