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ProloNg 20-4-20+TE Slow Release Fertiliser 20kg

ProloNg 20-4-20+TE Slow Release Fertiliser 20kg

Regular price £52.00
Regular price Sale price £52.00
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SKU 2224
Brand ProloNg
Active Ingredient 20% nitrogen, 4% phosphate, 20% potassium, 3% calcium, 1.5% magnesium & 8% sulphur
LERAP Category Does Not Apply
Pack Size 20kg
Pack Size Coverage 400m²
Granule Size 2-5mm (Maxi)
Spreading Rate 50g per m²
Application Method(S) Spread by Hand, Spreader
Area Of Use Amenity Turf, Lawn, Sports Turf, Trees & Ornamentals
Safe For Use On Conifer Safe, Grass, Lawns, New Grass, Safe Around Fruit Trees, Safe Around Shrubs, Safe Around Trees, Sports Turf
Period Of Use March, April, May, June, July, August, September, October, November, Spring, Summer

ProloNg 20-4-20+TE is a quality NPK fertiliser which will slowly release over a 4-6 month period. Allowing the plant to draw on available nitrogen over a longer period of time is far more efficient & reduces the amount of nitrogen lost to the atmosphere. The slow release nature of ProloNg 20-4-20+TE also reduces the sudden surge of top growth usually associated with high nitrogen products; instead of rapid growth the effects of this fertiliser will be manageable and still leave your lawn looking healthy and lush.

ProloNg 20-4-20 contains three vital macronutrients- nitrogen, phosphate and potassium. Each of these macronutrients have their own benefits; nitrogen aids with photosynthesis, phosphate helps plants convert other nutrients into usable building blocks with which to grow and potassium regulates CO2 uptake during photosynthesis.

If you require a product which doesnt release for quite as long, 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 20-4-20-+1.5Mg
  • contains: 20% nitrogen, 4% phosphate, 20% potassium, 1.5% magnesium.
  • So in a 25kg bag: 20% of the 25kg is nitrogen i.e. 5kg N, 4% of the 25kg is phosphate i.e. 1kg P, 20% of the 25kg is potassium i.e. 5kg K, 1.5% of the 25kg is magnesium i.e. 0.375kg.
  • For more information on Fertiliser rates visit

Key Benefits:

  • Improved utilization and plant take up of applied nitrogen.
  • Reduction in wasted nitrogen resulting in improved cost efficiency and reduced environmental impact.
  • Season long performance.
  • Reduces unwanted growth flushes.
  • Reduces soft lush growth and disease susceptibility.
  • Reduced chance of scorching.

Our Recommendation:

  • Always read the product label before use.
  • Apply ProloNg 20-4-20+TE at 3–6 month intervals.


By law, everyone who uses pesticides professionally must have received adequate training in using pesticides safely and be skilled in the job they are carrying out." Upon purchasing this product you and/or the end users are responsibile for ensuring that these products are used in line with industry Approved Codes of Practice. All operators must be trained and certificated in using and applying any Ministry Approved Professional Product (MAPP). Use plant protection products safely. Always read the label and product information before use. Please be aware that by proceeding you are purchasing a professional pesticide product. You must ensure the end user of these products complies with the DEFRA/HSE Code for the Safe use of Pesticides. There are legal responsibilities covering the storage and use of professional use pesticides. These responsibilities are covered by The Food and Environment Protection Act 1985 (FEPA) and Control of Pesticide Regulations 1986 (COPR).

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