Learning

Grodan User Instruction Videos

To further enhance the 6phase e-mail service we recently launched a series of User Instruction Videos, to enrich and visualise the advice provided.

Preparing for a new crop

It is important to give the best possible start to the new crop. The turn-round period offers opportunities to clean the glasshouse and carry out essential maintenance prior to its arrival. Commercial pressures sometimes mean that the glasshouse is only empty for 2-3 weeks. However a good clean up in this period will pay dividends for the cultivation to follow.

Best Practice Guidelines for Greenhouse Water Management

Did you know that growing a kilo of tomatoes in the open field requires a whopping 60 litres of water, whereas in hydroponic greenhouse cultivation it is only15 litres?

Grodan Recycling Service

Care for humans and the environment is evident in every stage of the life cycle of our substrate solutions, from production right through to recycling.

Grodan 6-phase model

The Grodan 6-phase model offers a blueprint for optimal crop results during both each cultivation phase and the entire cultivation period.

Nutrient management

Nutrient recovery makes sense economically and environmentally. Why would you discharge valuable nutrients when they can be used again?

Branch organisations and certificates

Our Precision Growing strategy has evolved over several years via ongoing input from a variety of external stakeholders including growers, retailers, non-governmental organisations (NGO’s), scientific researchers and policymakers.

What is EC?

Electrical conductivity or "EC" is a measure of the “total salts” concentration in the nutrient solution (drip, slab or drain). The higher the “total salts” concentration in a substrate the higher the EC. An EC will only be registered when inorganic ions are present in solution.

What is pH?

The unit of measure of nutrient solution acidity or alkalinity is termed "pH". It is a description of the concentration of the H+ ions in the feed solution, substrate or drain water.

General concepts in plant nutrition

All essential nutrients required by higher plants, in this case tomatoes, cucumbers and peppers, are exclusively inorganic in nature. Conversely, animals (including man) and some micro-organisms need, in addition to inorganic nutrients, a supply of organic foodstuffs. This essentially distinguishes animals, including Man, from plants.

Bacterial canker

Bacterial canker: How to identify and treat bacterial canker in tomatoes. Download the Nursery management plan to learn more about the prevention of bacterial canker and how to threat the disease.

EC management