Ferro Top®




Ferro Top® is an iron speciality fertiliser with high levels of potassium and magnesium as well as manganese to promote quality, resistance and colour. The fine granulation ensures perfect sward penetration.


Ferro Top® ensures quick greening without a flush of growth, displaces moss and protects against future ingress which is particularly important in winter to spring. Ferro Top® is also an ideal option for the early spring treatment to kick-start your turf.


The granule size of Ferro Top® is very fine and uniform 0.5-1.8 mm and is therefore ideal for high-quality sports turf surfaces and especially fine turf surfaces such as greens. Longevity of Ferro Top® is 4 - 6weeks.


In combination with the low nitrogen content, turf forms important amino acids, enzymes and proteins. The result, is improved chlorophyll formation and energy utilisation. Therefore turf is better protected against weather influences and improves the sward quality by increased resistance against wear, fungal diseases, moss, heat and frost.


Apply evenly, at an application rate of 20-35 g/m2 avoiding overlapped or missed areas, using a suitable calibrated spreader. Watering-in (minimum 5 mm) after application is strongly recommended! Expect around 6-8 weeks longevity and do not apply in frosty weather or hot, dry conditions. We recommend using PrecisionPro to ensure perfect application. To learn more about PrecisionPro click here.

Spreader settings

Single pass

AccuPro / SR 2000 spreader / Cone 5 / Spread width 4 metres

20g/m2 - M

25g/m2 - N

30g/m2 - N 1/2

35g/m2 - O

40g/m2 - P

Double pass

AccuPro / SR 2000 spreader / Cone 5 / Spread width 4 metres

20g/m2 - J 1/2

25g/m2 - K

30g/m2 - L

35g/m2 - L 1/2

40g/m2 - M


Application Overview

Applying Ferro Top® during the crucial growth potential period at the beginning of the year, will ensure your turf is sufficiently supplied with all required nutrients for optimum growth. Deficiency in N, K, Fe, Mg and S can lead to increased disease occurrence, poor quality turf and a much slower start to the season.

On the flip side when heading into Autumn, Ferro Top® provides all essential nutrients for increased disease resistance, colour, and displacement of moss which helps your turf become strong and healthy going into winter.

Early Spring Application

Utilising growth potential data for accurate timing of applications and optimum product performance is key for plant health & performance. Studies have shown, when growth potential hits 50%+ in the springtime, the so-called first granular feed should be applied. However, based on our research, when growth potential is between 30-50% during the beginning of the year, turf requires all the help it can to maximise its potential. Nitrogen uptake can fluctuate within this growth potential, as day temperatures increase the plant will require small doses of nitrogen and also other essential nutrients to maximise chlorophyll formation and energy utilisation. Ferro Top® provides the perfect amount of N & K plus Fe, Mg and S which are all required to promote strong healthy turf & photosynthesis.

The graphic above highlights the red/orange coloured sections above 30% GP which indicates the perfect time for applying Ferro Top®. Green coloured GP indicates first granular feed such as Floranid®Twin Eagle Master. Data is between 2018 - 2019 during the start of each year from 3 different regions.

Autumn Application

During the opposite end of the year when we transition into autumn, the plant becomes under severe stress such as disease and abiotic stress. The role of Ferro Top® during this time is to provide plant resistance, turf quality and colour. Ferro Top® also displaces moss and protects against new settlements. As growth potential is on the decline during the later part of the year when GP hits 50% is the perfect timing for Ferro Top®.

The image above shows optimum timing for Ferro Top® application during Autumn across 3 different regions. No 2 years are the same further highlighting the importance of monitoring the weather.


Discover the key functions of nutrients within Ferro Top® for the plant.

Key functions in the plant

• A fundamental component for plant growth, being important for amino acid synthesis and subsequent protein formation

• Formation of nucleic acids

• Synthesis of chlorophyll and ATP (adenosine triphosphate)

• Core role in photosynthesis and energy production

Key functions in the plant

• Maintenance of water balance in the plant, and helps regulate cell water content and plant turgor, maintaining stem strength.

• Important role in transpiration by controlling stomatal pore opening and closing

• Involved in transport of sugars from ‘sources’ to ‘sinks’

Good mobility in the plant

Key functions in the plant

• Required for the synthesis of chlorophyll, 80% of iron content is in chloroplasts

• Involved in respiration (redox reaction)

• Constituent of cytochromes, and involved in utilisation of nitrate and sulphate.

• Involved in lignin synthesis

Key functions in the plant

• Central atom of chlorophyll molecule and is therefore essential for photosynthesis. However, typically this is only 15-20% of a plant's requirement for magnesium. Deficiency of magnesium will reduce the plants photosynthetic rate

• Key activator of many enzyme reactions and protein synthesis

• Transport of carbohydrates and amino acids from the leaf to the roots and shoots via the phloem.

• Important in nitrogen and phosphate metabolism

• Regulates uptake and cell turgor together with K+

Key functions in the plant

• Sulphur is an essential component of proteins in plants since it is required for the formation of two amino acids (cysteine and methionine), that are the building blocks of proteins

• Sulphur is also a component of enzymes (forming bonds within the enzyme structure) and vitamins

• Sulphur is also involved in the reduction of nitrate to amino acids

Key functions in the plant

  • Component of enzymes involved in photosynthesis, nitrate reduction, protein synthesis and other plant processes

  • Required for chlorophyll synthesis

  • Involved in production of vitamin C and carotene

  • Manganese, zinc and copper are all constituents of superoxide-dismutase (SOD enzyme) important in the detoxification of damaging free oxygen radicals that are formed under stress conditions

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