Calcium Cyanamide fertilizer PERLKA® creates healthy pastures for horses!

For the main time of the year the grasses and the herbs growing on the pasture are the main source of food for grazing horses. Therefore it is very surprising that so many horse keepers neglect or completely ignore the care of the pasture. Many pastures are in such a bad condition, that one cannot have a quiet conscience when letting the horses grazing there: A poor quality of the forage inevitably affects the health of the horses.

A well-considered pasture management can promote plants with high nutritional values and repress species with poor fodder quality in the plant community.  Excessive utilization which damages the sward should be avoided by adapting the livestock numbers to the productivity of the pasture.  The grass should be given enough time to recover and to regrow after each grazing time. The very selective grazing of the horses can be counteracted by alternating periods of grazing and hay cutting or by alternating with grazing by cows or sheep. The composition of the plant community can be further improved with some basic measures of pasture maintenance such as using a pasture harrow at the end of the winter, cutting the residual plants after each grazing time, regular complementary seeding and a well-balanced fertilization.

Fertilization with mineral elements such as phosphorous, potassium, magnesium as well as lime applications should be based on the results of a soil analysis. With the report of the soil analysis the horse keeper receives a detailed recommendation. By this way it is made sure that only required nutrients will be supplied to the soil. In contrary a fertilization based on thumb rules often exacerbates nutrient imbalances already present in the soil. Such imbalances reflect in the mineral composition of the plants and can lead to physical disorders in the horses. Thus, the money for a soil analysis is a real good investment and in most cases pays back promptly by avoiding unnecessary fertilizer applications.

Only the fertilization with mineral nitrogen on pasture for horses does not depend on a soil analysis but on the nitrogen demand of the plant community. The nitrogen fertilization should be moderate and not luxurious in order to develop a dense and robust sward. Calcium Cyanamide PERLKA® is regarded as an ideal fertilizer for pastures of horses.

Ideal for pastures of horses: Calcium Cyanamide Perlka®

Although being a bit more expensive as common nitrogen fertilizers Calcium Cyanamide PERLKA® is ideally suited for horse pastures for following reasons:

  • Perlka® supplies nitrogen to the plants in a very even and sustaining way and avoids nitrate flushes. This promotes in particular the growth of low and leafy grasses and creates a dense and robust sward.

  • Due to its high content of very reactive lime PERLKA® stops soil acidification, improves the soil’s structure and by this way leads to an accelerated drying of the soil.

  • In the first days after spreading the fertilizer granules of PERLKA® are not compatible to emerging weeds. In addition when the granules roll into the heart of the rosette of an overwintering Dandelion or Ragwort plant it will heavily scorch or even destroy the plant. Fertilization with Calcium Cyanamide improves the composition of the plant community and represses the dangerous Ragwort plants.

  • Calcium Cyanamide PERLKA® also is incompatible for the infective larvae of horse parasites and reduces the risk of re-infestations when treated horses are grazing on the pasture.


The best time for fertilizing the pastures with Calcium Cyanamide is the early spring. The flowering of the Forsythia in the gardens can be regarded as an indication for the right time. The optimum application rate is about 350 kg of PERLKA per hectare. This does not only cover the nitrogen demand of the plants until mid of summer but is also sufficient to make use of the beneficial side effects of this fertilizer.  Fertilization with Calcium Cyanamide Perlka® right now in the spring lays the foundation of a healthy and successful grazing season!

Dr. Hans-Jürgen Klasse

Dr. Hans-Jürgen Klasse