How do you get rid of sooty blotch?
The sooty blotch fungus is restricted to the outer surface of the fruit, and in many cases the blotches can be easily rubbed off. However, if infection occurs early in the season, you may need to rub or bleach the fruit vigorously to remove it.
What does sooty blotch look like?
Sooty blotch, as the name implies, shows up as dark brown to black smudges. The blotches range in size from half-inch-diameter circles to smears that can cover half the apple surface. Some blotches are so faint they are barely visible. Flyspeck also resembles its name.
Can you eat sooty blotch?
The conspic- uous symptoms of sooty blotch and flyspeck diminish the outward appearance of the fruit. However, neither disease will cause a serious rot, and affected fruit can be eaten safely.
What is sooty blotch on apples?
Sooty blotch and flyspeck usually appear in August or September and are sometimes called the “summer diseases” of apples. Sooty blotch causes dark smudges on the surface of the apple. Both fungi are limited to the surface of the fruit and do not cause rot.
Can I eat apples with flyspeck?
Once flyspeck is active in your apple tree, it’s too late to treat it, but don’t stress — the apples that are affected are perfectly edible if you peel them first. Long-term management of flyspeck should focus on reducing the humidity inside the apple tree’s canopy and increasing air circulation.
How is potassium bicarbonate used as fungicide?
Potassium bicarbonate: Mix 1 tablespoon potassium bicarbonate and ½ teaspoon liquid soap (not detergent) in 1 gallon of water. Spray liberally to all affected areas. This mixture may work better than baking soda as a treatment for existing infections. Milk: Mix 1 part milk to 2 to 3 parts water and spray liberally.
What flyspeck means?
1 : a speck made by fly excrement. 2 : something small and insignificant.
Is potassium bicarbonate same as baking soda?
Potassium bicarbonate is widely considered to be one of the best substitutes for baking soda in a recipe. This is because potassium bicarbonate has the same leavening capabilities as baking soda, but there is one distinct difference: it does not contain any of the sodium that baking soda possesses.
What is the ratio of potassium bicarbonate?
Mix 4 teaspoons (about 1 rounded tablespoon) of potassium bicarbonate into one gallon of water. Spray lightly on foliage of plants afflicted with black spot, powdery mildew, brown patch and other fungal diseases. Potassium bicarbonate is a good substitute for baking soda.
What should I spray my apple tree with?
Horticultural oil is a well known insecticide for application during a tree’s dormant period to prevent unintended harm to beneficial insects such as bees and ladybugs. The University of California recommends spraying apple trees with dormant oil in the winter to control San Jose scale, and aphid and mite eggs.
When do you spray apple trees with fungicide?
Spray apple trees with a fungicide to control apple scab and powdery mildew. Apply when the green tips of leaves show, when pink buds appear and every 10 days as long as it is still raining.