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Grodan Grotop Master slab 100 x 7 x 15 cm

Grotop Master


  • 3995 DKK

Grotop Master

Optimum crops by maximum control range.

Grodan is introducing a greatly improved version of the widely-
used Grotop Master slab as one of the company’s new generation
substrate solutions. The ‘Next Generation’ slabs are manufactured using new and revolutionary production technology, further reinforcing the advantages of the Grotop Master for growers.


1. Optimal control

Using a targeted irrigation strategy to manage substrate WC with a stable and controlled EC optimises the input of labour and energy. In addition, steering with a low WC provides a muchneeded generative stimulus when climate management strategies focus on minimising the energy input. Steering with a higher WC in line with high outside radiation offers the advantage of optimal vegetative development – leading to a maximum yield of high quality fruits.

2. Maximises climate management

Grotop Master distributes irrigation water efficiently to resaturate the slabs, and refresh and stabilise the EC - all with minimal direct drainage. This excellent irrigation efficiency makes it easy to synchronise various climate management strategies aimed at lowering energy input and maximise the effect on steering plant development. The specific features of Grotop Master also maintain a stable substrate EC during changeable weather conditions.

3. Outstanding crop uniformity

Grotop Master distributes irrigation water uniformly throughout the slab. A homogenous root zone environment means that all the plants receive the same generative or vegetative stimulus in accordance with climate management strategies. The result is a uniform, perfectly balanced crop that gives higher production, better quality and uses less energy.

4. Robust and vigorous plants

Thanks to the uniform slab structure, the roots grow more evenly throughout the entire slab; new, healthy roots develop easily during the complete cultivation cycle. A strong, well developed root system secures a maximum uptake of water and nutrients and produces a resilient and vigorous crop, even at times of high radiation.

5. Sustainable water and nutrient use

GRODAN Next Generation fibres do not bind nutrients and do not require flushing at the start of the cultivation cycle, drainage water can be re – used from the start of the cultivation. A targeted application of water and nutrients from the start of the cultivation cycle enables
sustainable water and fertilizer use. In combination with other management strategies this also facilitates improved crop steering and better initial setting and fruit development