The best effects of the fertilizer are observed with pre-sowing fertilization. After sowing the fertilizer should be mixed with the soil at a depth of 10-20 cm. On winter plants fields it is possible to apply the fertilizer as top dressing before the spring vegetation of plants starts. As for grasslands, it is best to fertilize them in early spring. If large amounts are to be put in the soil, a part of the dose should be applied after the first harvest or pasturage.