NEED OF FRUIT AND BERRY CROPS FOR MICROELEMENTS

Zinc is essential for all crops, especially fruit crops. Like other microelements, zinc plays an important role in protein, carbohydrate and phosphorus metabolism, in the biosynthesis of vitamins and growth substances (auxins), and with a sharp change in temperature, zinc increases the heat and frost resistance of plants. With its deficiency in fruit trees, shortened shoots with small leaves located in the form of a rosette (the so-called "rosette") are formed at the ends of the branches, and with a strong deficiency, "dry top" appears.

- Magnesium is a part of chlorophyll, which determines its importance in the life of plants: it participates in carbohydrate metabolism, enzyme action and fruit formation. If its quantity is insufficient, magnesium intensively moves from the leaves to the reproductive organs. Magnesium deficiency primarily manifests itself on the leaves: chlorosis forms between their veins, they remain green, their color resembles a fir tree, and with an acute magnesium deficiency, "marbling", curling and yellowing are noted. Fruit plants experience early leaf fall, starting from the lower shoots even in summer, and severe fruit shedding.

- When there is a lack of iron in plant leaves, the formation of chlorophyll is disrupted, as a result of which fruit trees develop leaf chlorosis, which manifests itself primarily on young upper leaves and shoots (leaves lose their green color, turn pale and fall off prematurely). In addition, the synthesis of growth substances - auxins - is delayed in plants.

- Boron promotes the growth of pollen tubes and pollen germination, an increase in the number of flowers and fruits. Boron has a positive effect on plant resistance to fungal, bacterial and viral diseases. In fruit crops, boron deficiency is expressed in the crushing of the upper leaves, their curling and falling off, and with a sharp deficiency - in the development of "dry top", in the appearance of liquid ulcers on the fruits (inside and outside), which then turn brown and become corked, and the fruits acquire a characteristic bitter taste.

- Copper deficiency causes delayed growth and flowering in plants, chlorosis of leaves, loss of cell elasticity (turgor) and wilting of plants. With acute copper deficiency in fruit crops, "dry tops" and lateral shoots that are not typical for the growth period appear.