• Asian citrus psyllid

  citrus in several countries as it is a vector of a serious citrus disease called greening disease or Huanglongbing. It is widely distributed in southern [...] vectored disease. Damage symptoms The psyllid is a sucking insect that inserts its mouthparts into plant tissue to feed. Adults feed on young stems and on leaves [...] of the psyllid take the bacteria into their bodies by feeding on bacteria-infected plants and then disease is spread when adults fly to a healthy plant

• Disclaimer

  to this website personal data and other data may be stored in the form of cookies. Koppert reserves the right to store this data and to use it in its [...] on www.Koppert.com is without obligation and does not constitute a legally-binding offer to enter into a contract. Liability Whilst this website has been [...] means of a hyperlink, banner, or button) to other sites concerned with a specific aspect of this website. This does not automatically mean that Koppert

• Powdery mildew

  cell walls and makes it harder for the fungi to enter the leaves To reduce chances of powdery mildew in greenhouses, it is advised to first ventilate by [...] noticeable. In case of a severe epidemic, the fluffy colonies also appear on the upper side of the leaves. Many sweet pepper cultivars react to powdery mildew [...] mildew infection by dropping leaves that are not infected yet. It depends on the cultivar how soon after infection this happens. In apple, pear, outdoor grown

• Crazy roots, hairy roots, crown gall

  tissue and causes a genetic change in the plant. How to prevent Crazy roots, hairy roots, crown gall Use clean propagation material Use a strict hygiene protocol [...] disease 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 [...] bacteria survive in the soil, but it is possible that first infection is from the propagation material. Infection also takes place via wounds. After infection

• Cotton aphid

  population. Large individuals (up to 1.8 mm long) are usually dark green to black, while aphids produced in overcrowded colonies at a high temperature can be much [...] Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess [...] Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses reproduction takes place by

• Amazone Plants continues the path of organic cultivation

  wind at its back but the business started to take off in 2015. In 2019, the tomato nursery also owned by Van Zijl was converted, before being added to the [...] in 2020. A remarkable move ‘Well, we had ten good weeks, Fred and I said to each other when the coronavirus crisis erupted and exports came to a standstill [...] recounts. The two partners made a remarkable move – they rented additional greenhouses. These were used to temporarily store a proportion of the growing plants

• Crop Protection

  benefits. Lower risk to human health Biological crop protection poses minimum to no risks to growers and consumers. It reduces exposure to toxic chemicals, [...] own mechanisms to control pests and safeguard crops. It promotes ecological balance, minimizes harm to non-target species, and supports long-term sustainability [...] t interval – Safe to apply up to harvest with no waiting period. Low resistance risk – Pests typically do not develop resistance to natural enemies. Supports

• Spider mites and other mites

  effective way to keep plant mite populations under control. Spider mite control videos Take a look at the video or go to our Youtube channel to see our spider [...] of the plant. The number of eggs laid by a single female can vary, and they can hatch within a few days to a couple of weeks, again depending on environmental [...] as little as one to two weeks. This rapid development contributes to their ability to multiply rapidly and cause significant damage to plants if left u

• Horiver Drystick

  hotspots use one Horiver Drystick per 2 to 20 m 2 Notes In contrast to Horiver Wetstick , the glue of Horiver Drystick does not come off on your hands Horiver [...] Nesidiocoris tenuis White: Lygus spp. Mode of action Insect pests are attracted to the colour of the sticky trap and get caught in the glue. Presentation Polysterene [...] areas near doors, gable ends and lateral ventilation openings Attach traps to wires or sticks at max. 30 cm above the crop and adjust height when plants

• Verticillium wilt

  around 25-27 °C. How to prevent Verticillium wilt Start with clean soil or substrate by heating it at a temperature if at least 65 o C for a minimum of 30 [...] beginning the plant seems to recover at night. The symptoms may occur only in parts of the plant. Cutting the stalk horizontally reveals a slight discolouration [...] stream. As a defence mechanism, the plant produces gum in the vessels. The presence of both the fungus and the gum causes the xylem vessels to get blocked