Plant health
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Rhizoctonia
Rhizoctonia solani is a soil fungus with a wide host range and worldwide distribution. Host plants include almost all vegetables, flowers, shrubs and trees. …
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When each leaf counts, leaf samples can point to plant’s needs
It’s fine for a tomato plant to have a few spots on its leaves. But it’s a different matter when it comes to flowering …
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“Hygiene protocol and resistant varieties go hand-in-hand”
As a cucumber grower you have to have iron discipline and nerves of steel. An apparently invisible enemy – CGMMV – is always lurking …
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Rootstocks: an extra instrument to achieve production goals
In the past the use of rootstocks represented an important step in the fight against soil-borne diseases. But rootstocks offer many more possibilities: Improved …
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Plants wouldn’t be green without magnesium
Magnesium fulfils many functions within the plant. The element is crucial for the activity of many enzymes. These play a role in photosynthesis, the …
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Knowing where and how water contamination can occur is key
Dutch greenhouse growers manage their water flows and emissions into the environment very well compared to those in some other countries. But they could …
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“Film over the top of the pot does nothing but good”
Dutch Rhododendron grower Frans Kortenhorst was looking for a way to get rid of weeds and moss in his pots for good. He cut …
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Monitoring system for spider mite damage and yellow sticky traps
Pest monitoring forms the basis of good biological control. Knowledge of the ratio of harmful and beneficial insects is indispensable in determining the necessary …
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Researchers make breakthrough in thrips control in chrysanthemum
The predatory bug Orius has been used to control thrips in sweet pepper for many years with great success, but the results have so …
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Plant growth promoting rhizobacteria in bulb production
The Greenhouse Horticulture and Bulbs, Trees and Fruit business units are launching an Evergreen project to carry out research into bulb production using fewer …