I have a 20 of fruit trees of various species from apple, pear, cherry, plum, peach, I would like to know now that they are about to sprout if I have to fertilize them if so what kind of fertilizer should I use?
all the synthetic fertilizers that we find on the market contain three fundamental macroelements, which are used by plants for their development; the three fundamental elements are Nitrogen (N), Phosphorus (P) and Potassium (K). Nitrogen is essential for the general development of the green organs of the plant and for the production of new shoots, the production of new fruits, they also contain high quantities of nitrogen fertilizers such as manure and earthworm humus; phosphorus 7 is an important element for the development of the root system; potassium is essential for taste, flavor and fruit size. In addition to these macroelements, a good synthetic fertilizer also contains microelements, in smaller quantities, which are also important for the development of fruit plants, such as iron, calcium, magnesium and boron.
The fertilizations practiced in the orchard take into account the different periods of plant development, and also the different needs manifested during the year.
At the end of winter and the beginning of autumn slow-release fertilizations are practiced with nitrogen-rich fertilizers; this is because in the spring the vegetative restart shows very high demands for nitrogen, as the plants are producing buds, leaves, flowers; in autumn, however, plants can absorb nitrogen from the soil and store it for the following spring. A good autumn fertilizer will also contain good amounts of phosphorus, so as to favor the development of the root system. Spring fertilizations are provided between February and March, depending on the season, when the plants are beginning to swell the buds; the autumn fertilizations are practiced in September-October, when the plants are still in vegetation, before the winter rest. For this type of fertilization, manure is often used, which is distributed at the feet of the plants, burying them lightly with a hoe; for each plant about a bucket of manure is used; or spread a couple of handfuls of slow-release mineral fertilizer.
During spring and summer, instead, fertilizers richer in potassium are used, with a good quantity of phosphorus and microelements; this type of fertilizer improves the quality of the fruits, therefore the plants will take particular advantage of it while they are in fruit. Granular fertilizers can be used, both slow-release and faster-release.
In large orchards, foliar fertilization is also used in spring, with products rich in nitrogen, which works especially for pome fruits.