GP Frühjahr 27-5-11

GP Frühjahr 27-5-11

GP PREMIUM • CRF TECHNOLOGY

Professional starter fertiliser for spring turf regeneration

Short description: product section

GP Frühjahr 27-5-11 is a professional starter fertiliser for the first turf feeding after winter. High nitrogen supports regeneration, tillering and recovery of intensive colour. At the same time, 40 % of total nitrogen is CRF-coated and gradually released, ensuring even nutrition for up to 3 months.

The product is designed for professional care of sports pitches, golf courses and intensively used green spaces, as well as high-quality prestigious, ornamental and domestic lawns.

Key properties

Professional starter fertiliser for the first turf feeding after winter;

Supports regeneration of weakened, thinned swards and promotes grass tillering;

27 % total nitrogen meets increased requirements at the start of growth;

40 % of total nitrogen is coated for controlled release (CRF);

Combines a clear initial response with even nutrition in subsequent weeks;

Reduces growth surges, nutrient losses and the risk of local over-fertilisation;

Effective for up to 3 months after a single application;

Contains magnesium and sulphur to support photosynthesis and efficient nitrogen use.

A professional start to seasonal fertilisation

GP Frühjahr opens the GreenPlan Premium fertilisation programme. NPK 27-5-11 is specifically designed for turf emerging from winter: weakened, thinned or preparing for intensive use.

High nitrogen encourages above-ground growth, tillering and sward regeneration. Balanced phosphorus and potassium support establishment nutrition. Phosphorus participates in energy metabolism and root development, while potassium regulates water balance and strengthens natural stress tolerance.

Magnesium and sulphur complement the formulation. Magnesium is central to chlorophyll and photosynthesis. Sulphur participates in amino acid and protein synthesis and supports efficient plant nitrogen use.

Immediately available nitrogen combined with a gradually released fraction gives a visible initial effect while maintaining even subsequent nutrition. Turf receives a continuous supply for several weeks and develops steadily without excessive growth surges.

How does CRF technology work?

CRF (Controlled Release Fertilizer) is a fertiliser whose nutrients are released in a controlled way.

Some nitrogen-containing GP Frühjahr granules have a specialised organic resin coating. Moisture penetrates it after application, dissolves nutrients and enables gradual diffusion into the root zone. Release depends on coating properties and environmental conditions, particularly soil temperature and moisture.

CRF technology does not rely on nutrient uptake controlled by plant demand. The coating regulates nitrogen release independently of plant activity. Synchronisation with growth arises because soil temperature and moisture, the key factors governing the coating, also stimulate turf growth.

Nitrogen availability is consequently spread over time, promoting stable growth, reducing nutrient losses and lowering over-fertilisation risk.

Results of CRF technology

Even turf nutrition for many weeks after a single application;

Avoids growth surges typical of readily available fertilisers;

Reduces nitrogen losses through leaching and emissions;

Lower risk of local over-fertilisation;

More efficient nutrient uptake by the root system;

Greater turf resistance to drought and intensive use;

Predictable agronomic results throughout the effective period.

Applications

First feeding after winter, once active growth begins;

Regeneration of weakened or thinned swards;

Preparing turf for intensive use;

High-quality sports, golf, ornamental and utility turf.

GP Frühjahr: application and parameters

Application rate and coverage (25 kg)

Application instructions

Calculate the area to be fertilised and measure the appropriate quantity of fertiliser at the chosen application rate.

Spread evenly on dry turf, preferably using a calibrated spreader.

Avoid overlapping spreading passes and locally exceeding the rate.

Water the turf after application to initiate nutrient dissolution and movement into the root zone.

Good professional practice

Apply during active growth once a suitable soil temperature has been reached.

Do not apply to frozen, waterlogged or severely dried-out soil.

On larger areas, two passes in a cross pattern are recommended to distribute the granules evenly.

Avoid intensive turf use after application until irrigation or rainfall occurs.

Application conditions

Do not apply during frost, drought or strong sunlight. Do not exceed the recommended rate. Adjust the intensity of the fertilisation programme to grass type, soil conditions and use intensity.

Declared composition

Role in the GreenPlan Premium programme

GP Frühjahr is the first element of the three-stage GreenPlan Premium fertilisation calendar:

March / April → GP Frühjahr: start of season, regeneration, effective for up to 3 months

June / July → GP Standard: main season, maintenance of turf density, effective for up to 3 months

September / October → GP Long: winter preparation, effective for up to 6 months

For users wishing to reduce maintenance operations, GP Long can replace two separate applications with one application providing extended effectiveness.

FAQ

When should GP Frühjahr be applied? Once turf enters active growth after winter and can absorb nutrients. The optimum point is around 8 °C soil temperature in the root zone (0–10 cm), usually the second half of March or April in central Europe.

Does turf need watering afterwards? Yes. Watering initiates nutrient dissolution, reduces granules remaining on leaves and supports nutrient movement into the root zone.

How soon does it work? Initial effects appear in the first days because uncoated nitrogen is available. The remaining CRF-coated nitrogen is gradually released over up to 3 months, at a rate regulated by soil conditions.

Does GP Frühjahr cause growth surges? No. CRF technology reduces surges typical of fertilisers based exclusively on readily available forms. Nitrogen release is spread over time, encouraging more stable turf development.

When should GP Standard be chosen instead? GP Standard primarily maintains turf during the main season. GP Frühjahr is the starter fertiliser for the first application after winter.

Can GP Frühjahr accompany overseeding or spring renovation? Yes, including overseeding after scarification or aeration. High nitrogen supports young seedlings while CRF technology ensures even nutrition during rooting. Overseed before spreading fertiliser, then provide regular, moderate irrigation.

Is it suitable for domestic lawns? Yes. Although developed for professional sports facilities and green spaces, it performs equally well on prestigious, ornamental and domestic lawns with higher quality requirements.