• Crazy roots, hairy roots, crown gall

  yet been defined. The assumption is that the bacteria survive in the soil, but it is possible that first infection is from the propagation material. Infection [...] Agrobacterium rhizogenes and Agrobacterium rubi, n ow the first part of the name is changed to Rhizobium. Rhizobium rhizogenes or Rhizobium radiobacter causes [...] seems to be 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

• Cactus mealybug

  Spilococcus cactearum ) is a pest of cacti and other succulents. It was first described in England but its origin is not clear. It is now found on many gr [...] occasionally. After the second instar, the males form a pupa. After a complete metamorphosis, a winged male emerges from this pupa. The males lack mouth [...] mealybug Mealybugs get their name from the fact that the body of the females from the third nymphal instar onwards are covered with a white waxy material in

• Sustainability

  Future Forward - A path for a sustainable tomorrow At Koppert, sustainability isn’t just a concept, it is part of who we are. Since our foundation, we [...] our actions leave a lasting impact. We aspire not only to contribute but also to ignite a broader sustainability movement, promoting a culture of learning [...] we have been on a path to make a positive impact on the world. Our approach involves providing products and knowledge that support the transition of farmers

• Introducing the new Limonica: double the mites, double the power

  January 31, 2025

  Manager at Koppert, explains: “ Limonica is a product with enormous potential. However, the predatory mite is difficult to rear and had therefore not yet [...] Amblydromalus limonicus is a generalist predatory mite that feeds on whiteflies, thrips , mites and other small insects. This mite is very effective, especially [...] existing and new markets. More importantly, the improved production is a huge step forward in working on future developments of this successful product

• Gummy stem blight

  General Mycosphaerella cucumis (Didymella bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in [...] cropping: Remove all crop debris and disinfect the greenhouse Choose a cultivar that is less susceptible to internal fruit rot Use clean propagation material [...] up on the stem. On the lesions, golden-brown gummy drops occur, hence the name gummy stem blight. On the lesions, black specks, the new fruiting bodies

• Mediterranean fruit fly

  capitata ) is widespread in Africa, the Mediterranean basin and South America. Ceratitis capitata is a highly polyphagous species whose larvae develop in a very [...] recorded from wild hosts belonging to a large number of families. Damage symptoms The oviposition hole is often surrounded by a sunken and discoloured area. These [...] adult Mediterranean fruit fly is about 4-5 mm long. It has bright emerald green eyes suffused with reddish brown. The thorax is black suffused with greyish

• Red-belted clearwing

  myopaeformis ) is a pest of apple, often only attacking old and neglected trees. Other hosts are pear, almond, peach, cherry and plum. It is widely distributed [...] wings are mainly clear (therefore the common name) with brownish black veins and borders. The body is black with a red band across the abdomen. The larvae are [...] retractile; young larvae are whitish and have a light brown head. The pupa is 10-13 mm long and light brown with a dark brown head. The adults usually appear

• Trianum-P

  taken up better. This leads to a stronger and more uniform crop and better yields. This effect is stronger when the plant is under stress and/or cultivated [...] first two days after application of the product. Trianum-P is not a systemic product and is therefore not taken up by the plant Do not use disinfectants [...] to maintain a homogeneous distribution of spores Apply on the day of preparing the solution, since spore quality will decrease within a few hours Application

• Japanese flower thrips

  reportedly affected a wide range of host plants but not Hydrangea. Damage symptoms Despite its common name, the Japanese flower thrips is mainly a leaf-feeding [...] found in a Hydrangea nursery in the Netherlands in 2014 and has since then also been reported from several other European countries. Currently, it is a pest [...] their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations become serious the leaves

• Wheat bunt

  on all spikelets, showing the bunt (smut spore) they contain, which is larger than a normal kernel. The bunt balls are grey-brown. They rupture at harvest [...] contaminate healthy kernels, which in turn become a source of disease in the next season. Infection is strongly correlated to temperature and precipitation [...] tritici and Tilletia laevis only differ in one gene and easily hybridize. There is debate whether they should indeed be considered separate species, since they