Luboplon® calcium and magnesium should be applied before sowing. After sowing it should be well mixed with the soil. On arable grounds it is best to apply the fertilizer after skimming or before pre-winter ploughing in late autumn. One may also use it in autumn as a pre-sowing fertilizer provided that a good mixing with the soil is guaranteed. On perennial grasslands the fertilizer should be applied according to the rules of applying calcium on those lands. Fertilization should be made during non-vegetation period, in autumn or in early spring. The fertilizer should be spread evenly on the whole area of the field in the manner preventing fertilizing the fields and cultivations which are not intended for it.