Is yellowing of fruit trees useful for injections?

Yes, there is. Mainly by injecting various nutrient elements, especially trace elements, into the trunk to supplement nutrition and make the leaves green, which has a good recovery effect on the yellow leaves caused by element deficiency. However, attention should be paid to cultivating developed roots, because yellowing is mostly caused by poor roots and weak absorption capacity. Through deep application of heavy fertilizer, deep penetration into the root system, providing absorption capacity, the purpose of strengthening green leaves is achieved.