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AlzChem Perlka (Calcium Cyanamide) 25kg

AlzChem Perlka (Calcium Cyanamide) 25kg

AlzChem Perlka (Calcium Cyanamide) 25kg

Perlka, (Calcium Cyanamide), helps encourage a large population of useful soil bacteria, which research has shown helps to supress soil borne fungal diseases like CLUBROOT in brassicas, RHIZOCTONIA (Dead Root, Brown Patch) in potatoes and SCELEROTINIA in salads.

Perlka (19.7% Nitrogen, 50% Calcium Oxide (CaO) 1.5% MgO), is known for its evenly balanced, long term nitrogen effect. The reason, unlike other nitrogen fertilizers it remains in a stable ammonium form for 6-8 weeks. This enables the plants to take up more ammonium and less nitrate.

The advantages of this are:-

  • Healthy, balanced growth
  • Stronger root growth.
  • Lower nitrate levels in the plant
  • Reduced risk of leaching

If used correctly, Perlka can also help reduce germinating seeds, slugs and wireworms.

How To Use

Rake into the planting area a base dressing of 50g-100g of Perlka per Square Metre during January, February and March.

This rate is ideal for most vegetable crops but you must allow 10 days between applying Perlka and sowing either seeds or transplanting.


Where Brassicas are in a Clubroot infected area, you should apply an additional top-dressing of Perlka at a rate of 50g per square metre 3 to 4 weeks after planting. Ensure that the soil is moist and the plants leaves are dry. Avoid direct contact with the foliage.

Other Vegetable & Fruit Crops


Perlka Grams per Sq Metre



20 - 30g

1 to 2 weeks before sowing


30 – 50g

Before Sowing









50 – 75g



2 – 3 weeks before planting







After Harvest


50 – 60g


25 – 50g





3 weeks before planting


In early Spring before new leaves appear.


On dry plants only.






30 – 50g


In early Spring before buds break.


50 – 75g

In early Spring before buds break




30 – 50g

30 – 50g

2 - 3 weeks before planting

2 – 3 weeks before planting


 Contains Calcium Cyanamide

Wear suitable protective clothing, gloves, mask and eye/face protection. Harmful if swallowed. Irritating to respiratory system. Do not breath dust. Risk of serious damage to eyes. In case of contact with eyes, rinse immediately with plenty of water and seek immediate medical advice. Can cause skin irritation and allergic skin reaction. If in contact with the skin, wash off immediately with plenty of soap and water. Do not consume alcohol 6 hours prior to, during and 12 hours after handling this product. Store out of the reach of children and animals.



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