TurfRx Si increases antioxidant production to combat abiotic stress influences. It improves silicon and calcium nutrition for the plant, both of these essential minerals benefitting from the unique Redox micro-encapsulation process. As the presence of silicon and calcium fortifies cell wall strength, TurfRx Si is unique in its ability to increase abiotic stress defences.


Reducing turf damage caused by ball marks or general wear and tear, TurfRx Si also results in increased ball speed across the turf surface and can be applied prior to the mechanical removal of Poa annua seed heads as the erect response it causes in the grass plant can increase the efficiency of this process.


TurfRx Si can be applied to all turf surfaces and tank mixed with all Redox TurfRx products.


Applications of TurfRx Si will result in erect vegetative growth, improved wear tolerance, greater cell wall strength, improved soil structure and increased soil bio-activity while also reducing compaction and the negative effects of high salt fertilizers and chemical inputs.


TurfRx Si is a uniquely tank-mixable and soil-stable form of both silicon and calcium that results in zero sprayer blockage or soil lock-up issues. TurfRx Si is taken up by plant roots and transported in the xylem. Application should be made 2-3 days prior to the desired turf effect in order to allow for TurfRx Si to become present within the leaf.

Practical rates of use for the UK and European climate and grass types: 2.5 – 15L / Ha Higher rates than this are purely for extreme conditions where they are warranted.

Apply using a pedestrian or tractor mounted boom sprayer with the correct nozzles calibrated for your output rate and target area. Always use an accurately calibrated applicator and ensure all required PPE is used. Read all labels for compatibility issues if mixing, always dispose of used containers correctly. Contact your Agrovista Amenity Adviser for further information.


Pre-mixing is considered a best practice when sprayer agitation is not optimum. Proper hydration is essential for all applications. Recirculate or agitate while adding material.



  • Always jar test first.

  • Redox products are compatible with other Redox products when following product handling guidelines.

  • Use caution with reactive materials. For example, phosphorus and calcium.

  • Avoid extreme shifts in tank pH.When utilizing Redox materials that acidify, check tank pH prior to adding buffers.


  • Use of an anti-foaming agent is recommended. Fill the tank 50% full with water and initiate tank agitation prior to adding materials.

  • The use of inductor assemblies is encouraged.

  • Recirculate or agitate while adding material.


  • Rinse after use.


The Role of Silicon

Silicon is a plant beneficial element, taken up by the roots, and deposited in and around the leaf cells, for strong cell wall and cuticle formation and all the benefits associated with these. The silicon used in TurfRx Si is derived from silicon dioxide just as many other Si products are. The difference is that the silicon in TurfRx Si is reacted to take it from compound form to plant available ionic form. Compound forms of Si on the market require microbial activity to break it down before it becomes plant available.

There are also some Si products available that are silicate. Silicate is not a plant beneficial element, although sold as an Si product. Silicate can be used to give the leaf blade some stiffness. Sprayed on silicate coats the leaf, may result in some benefit but wash-off and regular mowing compromise any longevity.

Stronger Plant Cell Wall

Most silicon is found in the outer cells or epidermis of the plant and in effect forms a mechanical barrier against pathogens. Many beneficial effects of silicon are reported in turf grass. Leaves grown in the presence of silicon show an erect growth and improved wear tolerance. The presence of silicon also enhances the uptake and distribution of calcium for cell wall structure.

The majority of plant calcium is found in the plant cell walls, mainly in the outer portion of the plant cell wall. Plants higher in calcium will have improved cell wall structure and will be less susceptible to invasive fungal diseases and insects. Calcium nutrition is also essential for proper soil structure and colloid formation. Reduced soluble carbon can lead to degradation of soil colloids, soil structure and reduction in soil bio-activity.

Membrane stabilisation and function.

Plant cell membranes act as barriers to the movement of molecules. In plants, active solute transport will improve overall turf quality and reduce pest and pathogen presence. Calcium acts in plant membranes to improve active solute transport through the membrane by bridging phosphate and carboxylate compounds and binding them to the membrane surface. This calcium function stabilises the cell membrane and reduces leakage and/or passive movement of cell solutes thus reducing weaknesses for invasive pests and pathogens to take advantage of.

Plant cell signalling.

Plant cells have the ability to communicate abiotic or biotic pressure and this is done via calcium binding proteins within plant cells. As environmental stresses change, calcium will bind to proteins based on what the environmental stress is. This in turn will dictate physiological and metabolic changes in the plant to respond to the stress event, allowing the plant to adapt and thus reducing the negative influences of stress.

How to influence calcium nutrition.

To study calcium agronomically is to study both soil and plant. You cannot have adequate soil ionic calcium for improved soil structure without plant influence and soil biology. Conversely you cannot have adequate plant calcium nutrition without proper soil structure. One acts on the other. It is critical that, from an agronomic perspective, action is taken to improve soil biology to maintain adequate soil structure and plant available calcium.

Agrovista amenity supply calcium in microencapsulated form in two Redox products; TurfRx Ca and TurfRx Si. This particular manufacturing process is important in that it uniquely results in tank-mixable and soil-stable calcium thus preventing calcium tie-up and allowing this critical mineral to be transported via water movement to soil micropores. It is in these micropores that calcium is influential in improving soil structure. Microencapsulation is also important in calcium plant nutrition. As the plant absorbs water, it also absorbs the minerals within that water. Microencapsulated calcium is able to be absorbed into plant roots via water transpiration. Once inside the plant, the microencapsulation is broken down becoming a food source for soil biology, and ionic calcium is delivered to the plant for utilisation in its associated metabolic processes.

Tank Mix Solutions

K+ Micro Crystal, Supreme and Si

A pre-game / pre-tournament mix when the ultimate speed of ball roll in combination with turf stress management are the aims.

*The order in which TurfRx products are displayed, is the order in which you must add them to the tank for an optimum tank mixing solution

Supreme & Si

The tank-mix option to consider when requiring increased wear tolerance in a fine fescue sward while implementing austere nitrogen inputs.

*The order in which TurfRx products are displayed, is the order in which you must add them to the tank for an optimum tank mixing solution

Fairway+ and Si

Common deficiencies seen on a soil report are phosphate, potassium and calcium with silicon often non-existent. Fairway+ and Si is the TurfRx tank-mix widely used in this situation.

*The order in which TurfRx products are displayed, is the order in which you must add them to the tank for an optimum tank mixing solution

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Lesson Notes

  • Study the What, When, Where, How and Why sections while looking out for key highlighted information.

  • Study the ingredients & labels

  • Read the information booklet and watch any associated videos if available.

  • Also study any MSDS information, Spreader setting and other available options and buttons within the course to fully understand the product.

  • When you are happy with all the knowledge gained, take the Final Test.

  • This course requires a 70%+ score to achieve a certificate. Upon completion of the Final Test, you will receive a pass or fail certificate depending on your score.

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