What happens when apples lack potassium? Prevention and control of potassium deficiency in apples!

Potassium deficiency in apples is prone to occur in fine sandy soil, acidic soil, and soil with low organic matter. Insufficient sunlight and excessive soil moisture can also cause potassium deficiency. This article discusses the symptoms of potassium deficiency in apples and introduces how to apply potassium fertilizer when planting apples.

Symptoms of potassium deficiency in apples

When potassium deficiency occurs in the leaves, the edges of the middle and lower parts of the tree will turn dark purple, and over time, they will turn brown and scorched. Except for the scorched and withered parts, the remaining green leaves do not affect normal growth.

When potassium deficiency occurs in the fruit, the resulting fruit is small in size. Low sugar content, poor coloring, poor taste, and also the phenomenon of fruit drop leading to a decrease in yield.

Prevention and control of potassium deficiency in apples

In the daily management of orchards, great attention is paid to the application of nitrogen fertilizer, and the lack of application of phosphorus and potassium fertilizer leads to an imbalance in the nutritional composition of the orchard. In fact, for fruit trees that have already grown and borne fruit, the demand for nitrogen fertilizer is relatively low, and more attention should be paid to the application of phosphorus and potassium fertilizers.

Especially during the fruit expansion period, high potassium fertilizer can be applied to supplement the fruit with sufficient potassium element, improve the sweetness of the apple, expand the fruit quickly, and have good quality. It can also be supplemented with zinc and magnesium fertilizer in an appropriate amount to make the leaves dark green.