Have you noticed how some apple trees are bursting with fruit, while others are withering even in a good year?
A neighboring agronomist has been hiding empty milk bottles on his plot for ten years. It seems crazy, but they are the key to a record harvest.
In April, when the buds are just beginning to swell, mix 1 liter of sour milk with 5 liters of water and pour it under the roots.

Lactic acid bacteria will destroy fungi, and calcium will strengthen the ovaries.
But the main thing is to add 3 drops of iodine to the solution. Iodine awakens dormant buds and enhances flowering.
In a week the tree will be covered with buds, and in August you will pick apples that won’t fit in the bucket.
Just don't use fresh milk - it creates a film on the roots. And hide the bottles - the neighbors might guess that you know their secret.
If the apple tree is old, add a glass of onion peel to the solution - it will drive away the codling moth.
For young trees, replace iodine with 2 drops of brilliant green - this will speed up the growth of the bark.
If it rains after watering, sprinkle the tree trunk circle with mustard powder: it will retain moisture and repel ants.
Milk watering also saves from scab: spray the trunk and branches, and the black spots will disappear in a day. But do not repeat the procedure more than once a month - excess calcium will make the fruits hard.
And remember: this method does not work on dwarf varieties. Their roots are too weak for such aggressive feeding.