It is possible to apply fertilizers directly to plants , or indirectly. If plants or trees exhibit signs of deficiency in nutrients the rates of fertilizer for turf need to be increased.
Direct fertilization of trees and shrubs might require placement in the soil used for backfill or in an opening for planting. Broadcasting is by far the most commonly used way to apply fertilizer. It's also the most affordable. The application of deep root fertilization consists of tree's roots or bush fertilization. A little watering of the fertilizer will be sufficient as well.
In the beginning, you should aerate or rake soil.Spreading fertilizer in granules on it is the easiest and most effective method to fertilize trees that are large. Rainwater for irrigation water will transfer the nutrients to the roots. Spread the fertilizer over the fertilized zone – the portion that covers the two-thirds space between the trunk and the drip line and at minimum 50 percent of the radius of the crown beyond the drip line.
Another option is to put fertilizer granular in holes that are 4-12 inches deep in the soil. The holes must be dug using a regular pattern, with 2- to 3 feet intervals. Divide the fertilizer among the holes. This technique ensures the same coverage.
Injecting fertilizers that are liquid into soil is a typical commercial practice. This fertilizer is then injected by an injection probe designed specifically for this purpose.