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Agrigem Specialist Amenity Products and Services

ProloNg 46-0-0 Slow Release Fertiliser 20kg

ProloNg 46-0-0 Slow Release Fertiliser 20kg
£56.40 Inc VAT £47.00 EX VAT
  • Buy 5 for £45.00 (£54.00 incl. tax) each and save 5%
  • Buy 10 for £43.00 (£51.60 incl. tax) each and save 9%

Availability: In stock

6 - 12 Month Release High Nitrogen Fertiliser

Delivery Costs Calculated At Checkout
Click & Collect available

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Key Information

Additional Information

Active Ingredient46% nitrogen, 0% phosphate, 0% potassium
LERAP CategoryDoes Not Apply
Pack Size20kg
Pack Size Coverage400m2
Granule Size2-5mm (Maxi)
Spreading Rate50g/m2
Application Method(s)Spread by Hand, Spreader
Area of UseAmenity Turf, Lawn, Sports Turf
Safe For Use OnGrass, Lawns, New Grass, Sports Turf
Period Of UseMarch, April, May, June, July, August, September, October, Spring, Summer, Autumn


Prolong 46-0-0 is a straight nitrogen fertiliser which will release over a 6-12 month period. Allowing the plant to draw on available nitrogen over several months is far more efficient and reduces the amount of nitrogen lost to the atmosphere. Using a slow release fertiliser will also reduce the sudden surge of top growth usually associated with high nitrogen products.

Nitrogen is crucial for the healthy growth of plants. Part of the cholophyll molecule, nitrogen gives plants their green colouration and is involved in the process of photosynthesis. The main symptom of a lack of nitrogen in plants is usally a general yellowing (chlorosis) of the green leaves.

If you require a slow release product which contains additonal nutrients, consider 18-3-8 Slow Release.

Understanding Fertiliser Analysis:

- Under the metric system the unit of measurement is a kg.

- Recommendations are given in kg/ha.

- A fertiliser with the analysis 46:0:0 contains: 46% nitrogen 0% phosphate 0% potash

- So in a 20kg bag: 46% of the 25kg is Nitrogen i.e. 9.2kg N, 0% of the 25kg is Phosphate i.e. 0kg P, 0% of the 25kg is Potassium i.e. 0kg K

- For more information on Fertiliser rates visit

Key Benefits:

- Improved utilization and plant up-take of applied nitrogen.

- Reduction in wasted nitrogen resulting in improved cost efficiency and reduced environmental impact.

- Season long performance – recommend applying at 3 – 6 month intervals.

- Reduces unwanted growth flushes.

- Reduces soft lush growth and disease susceptibility.

- Protects water courses from nitrate pollution (less algae growth in ponds/lakes).

- Safe, reduced scorch formulation.

Our Recommendation:

- Always read the product label before use.

- If you require a liquid alternative consider Slow N.

- Look at our Heavy Duty Spreader or Pro Fertiliser Spreader.

- Improve the pH of your soil by applying Granulated Lime.

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How much ProloNg 46-0-0 Slow Release Fertiliser 20kg will you need?

Purchase the correct amount of product for your requirements with our material calculator - which will tell you how much product you require.

You will need: Containers

Calculator Disclaimer This is guide only, For crop specific rates please check the product label.

Product Videos

    How Does Fertiliser Work?

    How to Fertilise a Lawn or Paddock