• Biological seed treatment

  January 1, 1970

  abiotic stress, the development of the root system, and the productivity of the crop. Positive attributes of microbials depending on the organism. An overview: [...] colonize the roots and protect the crop during the entire growing season. Seed treatment increases the availability of plant nutrients in the root system [...] applied to the seed in a powder form or as a liquid. An even layer covers the whole seed. In this way, the beneficial ingredients are available to the seed when

• Grey mould

  January 1, 1970

  cinerea ) is part of the foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes lesions [...] pruning wounds. These lesions may encircle the stem, so the part of the plant above the lesion wilts and dies. In vegetables and strawberry, grey mould ( [...] that it excretes compounds that kill the plant cells and then uses the content of the plant cells as nutrients. On the infected area, new spores are formed

• Fusarium wilt

  January 1, 1970

  inside the vessel system of the host plant and spreads upwards inside the plants. The other species are dispersed upwards on the outside of the plant. [...] one side of the plant. Finally, the whole plant wilts. Other symptoms are brown discolouration of the xylem vessels which can be seen when the stems are [...] takes place as infection of the roots at the root tip or in small wounds, for example where lateral roots branch off from the tap root. How to prevent

• Biocontrol for Spider Mites

  April 24, 2020

  without the use of harsh chemicals. In the mid 1960's, Koppert released the first predatory mite, Phytoseiulus persimilis , for the control of spider mites [...] and as the chlorophyll is removed, the leaf, and eventually the whole plant, may die. Nymphs and adults of spider mites produce webbing in which the mites [...] Spider Mites Spider mites are pests of many crops throughout the world. By far the most common species in greenhouses is the two-spotted spider mite , Tetranychus

• Powdery mildew

  January 1, 1970

  infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because the fungus infects the plant by entering through the stomata [...] on the underside of the leaf. On the upper side, yellow spots are noticeable. In case of a severe epidemic, the fluffy colonies also appear on the upper [...] epidermal layer of plant cells. Most of the fungus remains on the outside of the plant surface. On the mycelium on the plant surface, new conidiophores are

• Rhizoctonia solani

  January 1, 1970

  plant parts that are in or close to the soil. Early infection of the growing tips of the roots shortly after germination causes death of seedlings (‘damping-off’) [...] collar of fungal mycelium occurs at the base of the stem. This crown rot may result from root infection or from direct infection of the foot. The fungus [...] res. These spores don’t play a role in the epidemics or dispersal of the fungus, only the mycelium is important in this context. Thanatephorus cucumeris

• Crazy roots, hairy roots, crown gall

  January 1, 1970

  caused by a change in the hormonal system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and [...] crown gall The primary source of infection by Rhizobium rhizogenes has not yet been defined. The assumption is that the bacteria survive in the soil, but [...] disinfection of tools, drippers, gutters etc. Adjust the work order in greenhouses to fit with the hygiene protocol Disinfect the nutrient solution in order to

• Gummy stem blight

  January 1, 1970

  ascospores are the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease downwards. How to prevent Gummy stem blight [...] cucumber, the most important symptom is internal fruit rot, which can only be recognized from the outside by the small narrowing of the tip of the mature fruits [...] a cucumis in cucumber causes brown lesions on the foot and higher up on the stem. On the lesions, golden-brown gummy drops occur, hence the name gummy

• A life-long commitment to help growers thrive with sustainable growing practice

  January 14, 2025

  Preparing for the future ‘The future holds many challenges and one of them is the severe reduction in the use of chemical agents. In fact, a lot of them are [...] pest management strategies in horticulture. We have the most experienced consultants in the industry with years of practice in the field. We know our natural [...] vital role during the introduction and rollout.’ Making biocontrol the norm In the Netherlands, the use of biocontrol has become the norm when it comes

• Embracing sustainability brings value

  July 16, 2024

  In a world where the health of people and the planet are increasingly intertwined, the role of agriculture is paramount. It's not merely about producing [...] This sentiment echoes through the words of Peter Maes, Chief Strategy Officer of Koppert, who emphasizes the importance of aligning business practices with [...] Sustainability brings value Drivers of success are not solely economic but also rooted in a broader mission and vision of the company. ‘Sustainability is not