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ProloNg 46-0-0 20kg Slow Release Fertiliser

Availability: In stock

6 - 12 Month Release High Nitrogen Fertiliser

  • Buy 5 for £37.00 (£44.40 inc VAT) each and save 6%
  • Buy 10 for £34.00 (£40.80 inc VAT) each and save 13%
£46.80 Inc VAT £39.00 Ex VAT
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Product Description

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.


Recommended Period of Use
Jan Feb
Mar Apr May
Jun Jul Aug Sep Oct Nov Dec
    leaf leaf leaf leaf leaf leaf leaf leaf    
leaf = Optimum time for application


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

Brand Nutrigrow
Active Ingredient 46% nitrogen, 0% phosphate, 0% potassium
LERAP Category Does Not Apply
Pack Size 20kg
Pack Size Coverage 400m2
Fertiliser Spreading Rate 50g/m2
Application Method(s) Spread by Hand, Spreader
Area of Use Amenity Turf, Lawn, Sports Turf
Safe For Use On Grass, Lawns, New Grass, Sports Turf
Period Of Use March, April, May, June, July, August, September, October, Spring, Summer, Autumn
MPN Does not apply

Application Rates

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