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.
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
“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
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
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
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
“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
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
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
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
Book about grafting fruiting vegetables
Levels of production of crops such as tomato and aubergine have increased in recent years with the use of rootstocks. In a number of
Precision Horticulture Programme focuses on plant level
The Precision Horticulture Programme was launched this year. It is a form of horticulture in which plants receive precisely the treatment they need. In
Nutrient deficiency in peppers despite perfect drainage values
When several of the sweet pepper plants at Zwingrow in Honselersdijk (Westland, the Netherlands) were found to be growing more slowly than the rest,
Erwinia
Erwinia is a bacterial disease that can cause damage in a range of crops. It often produces watery looking, rotten patches on the leaves,
Plant Health Cure presents explanatory video about root growth
Soil is a living organism is the title of a new 12-minute explanatory video by Plant Health Cure that shows ‘how roots grow and
Royal Award for the management of Koppert Biological Systems
The management of Koppert Biological Systems received a Royal Award on 15 September. Paul Koppert and Henri Oosthoek received the award from mayor Pieter
Constant arms race between plant and fungi
Fungi parasitize plants because they can’t assimilate themselves. They have developed numerous methods of penetrating the plant. In turn, plants have developed a complete
Luring effect of pheromone enhanced by adding plant aromatics
Plant bugs like the European tarnished plant bug and the common nettle bug are a serious problem in crops such as aubergine, cucumber and
Adding bio to substrate reduces chemical use in strawberries
The strawberry is a vulnerable crop: the plants and fruits are susceptible to all kinds of diseases and insects. Crop protection is therefore a
Only a systematic approach can limit excessive root growth
Virtually nothing can be done about excessive root growth. However, this troublesome bacterial disease doesn’t always get the chance to develop. Other microorganisms that
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