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Grodan 6-phase model

Growers’ needs for structured cultivation information are continually increasing due to the improved insights into cultivation, development of new cultivation systems and the continuing increases in the scale of horticultural operations. The Grodan 6-phase model offers a blueprint for optimal crop results during both each cultivation phase and the entire cultivation period.

Greenhouse filled with swett pepper plants

Each phase is characterized by a specific development of the crop that imposes specific requirements in that phase. Consequently, the advice for each phase needs to be tailored to the specific stage and take account of the crop and rooting climate.

The Grodan 6-phase model not only assists growers in the selection of the appropriate substrate slab for a specific crop, but also helps then to determine the optimum watering strategy for the specific type of slab in each cultivation phase. The model can also assist in the determination of schedules for the plant load, temperature regimes, fertilization schedules, and CO2 and lighting levels. Users of the 6-phase model receive an e-mail with the relevant cultivation recommendations before the beginning of each cultivation phase.

20200525 GR PHO 5206
Advice
01 Dec 2024

Best Practice Guidelines for Greenhouse Water Management

Growing tomatoes in open fields needs 60L water per kilo, but in hydroponic greenhouses, it's only 15L. Hydroponics is more water-efficient.

20200410 GR PHO 5153
Advice
01 Dec 2024

Preparing for a new crop

Give the new crop a good start with a thorough greenhouse clean during the 2-3 week turn-round period, ensuring optimal conditions for cultivation.

20190110 GR PHO 301
Learning

Cutting drainage holes in stages

Grodan's specialist emphasizes the importance of cutting drainage holes for healthy root development in substrate-grown crops.

Our latest blogs

20250724 RW-GREA PHO 1684
Water Management
Sustainable Growing

Why seeds on stone wool are the recipe for higher-value strawberry production

Against the backdrop of the accelerating market transformation from low-tech to high-tech strawberry production, initial results from an innovative trial demonstrate the excellent compatibility between F1 hybrid strawberry seeds and Grodan stone wool solutions.

20181024 RW-GR PHO 36
Sustainable Growing

Zero Pesticide Residue – The New Standard in Greenhouse Production

In the era of advanced technology and increasing consumer awareness, the modern greenhouse is not just a place of production but a true laboratory of innovation and an ecological bastion of food safety. Growers, who just decades ago focused mainly on efficiency and fighting plant diseases and pests, now face a completely new challenge: how to produce fruits and vegetables without chemical crop protection residues, while meeting the market’s ever-growing expectations?

20240214 RW-GR PHO 1301
By Andrew Lee
Water Management
Sustainable Growing

Drain is not the goal in precision irrigation

Besides helping growers to achieve their sustainability goals, efficient water management plays a crucial role in maintaining plant health. Realising or steering towards a certain drain volume or drain percentage per day should not be your goal. Instead, the goal should be optimising your irrigation strategy to provide your crop with precisely the amount of water and nutrients it needs. This will ensure the development of a strong and healthy root system, leading to consistently good plant growth, fruit quality and a higher total production. Grodan’s Andrew Lee explains how.

20181022 RW-GR PHO 7
Sustainable Growing

Rooted in Science: Grodan's research into pepper wilting

Since 2022, a limited number of high-tech greenhouse pepper growers worldwide have faced a rapid and severe form of wilting that posed a threat to crop production. This has left growers searching for answers. In response, Grodan funded rigorous, independent research, collaborating with a wide range of industry partners to analyse all potential contributing factors. Findings to date currently point to a specific isolate of the pathogenic fungus Fusarium as the cause. Today in the Netherlands and Belgium the isolate it is referred to as Fusarium oxysporum radicis capsici (FORC). In Canada it is referred to as Fusarium Oxysporum Species Complex (FOSC). It is highly pathogenic and specific to peppers. Initial scientific reports also show that wilting caused by the Fusarium isolate can occur in both stone wool and organic substrates.

Grodan Newsletter

Do you want to learn more about Grodan? Feel free to sign up to our newsletter. Grodan ensures that growers can make optimum use of its products and services by interpretting the company’s knowledge of and experience with substrate cultivation in terms of up-to-date, crop-oriented advice. Ranging from tailor-made advice from crop consultants to newsletters, seminars and training courses and articles in trade journals.

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We are a global leader in the supply of innovative stone wool substrate solutions for the professional horticultural based on Precision Growing principles.

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