The timely and appropriate application of potassium fertilizer to apple trees can significantly increase the size of the fruit, increase the sugar content, improve the coloration, and improve the internal quality of the fruit color, smooth skin, flavor and taste.
The absorption of potassium by apple trees is generally from late July to mid-August, and applying an appropriate amount of potassium fertilizer to fruit trees during this time will get twice the result with half the effort. If the same amount of potassium fertilizer is applied in early spring or before flowering, it will not have a significant effect on the yield or coloration. The application rate can be 1 kg of pure potassium per 100 kg of yield. If it is applied excessively, it will destroy the physiological function of fruit trees and affect the absorption and utilization of other elements. Excessive application of potassium fertilizer in apple trees is associated with magnesium deficiency and a relative decrease in calcium content in the tree.
In addition, when applying potassium fertilizer, potassium sulfate with high absorption and utilization rate and obvious effect should be selected, followed by potassium chloride, and organic fertilizers with high potassium content such as plant ash or rotted chicken manure can also be used to sprinkle under the tree, and then shallow burial and watering. If foliar spraying is supplemented with 0.3%~0.5% potassium dihydrogen phosphate solution or 300~500 times of potassium amino acid, good results can also be obtained.
The high-quality and abundant yield of potassium fertilizer applied to apple trees is introduced here, and I hope it will be helpful to everyone. If you want to buy high-quality and high-yield apple trees, you can download the Seed Bank App, and the country's excellent apple tree varieties are available for everyone to choose from.
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