• Crazy roots, hairy roots, crown gall

  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 [...] 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 [...] assigned to the genus Rhizobium . These pathogenic bacteria were formerly known as Agrobacterium tumefaciens or Agrobacterium radiobacter, Agrobacterium vitis

• House fly

  Houseflies are a well-known pest of farm and home. Believed to have originated in central Asia, the insect expanded its range worldwide long ago as a commensal [...] association with human activity. As the most common species of fly found on livestock farms, they represent both a nuisance and a risk for disease transmission [...] domestica is a confirmed vector for over 100 different pathogens, including viruses (such as the Newcastle Disease virus), bacteria (such as Salmonella and

• Swirskii Predatory Mite Not All That Demanding

  May 3, 2019

  Whitefly The predatory mite Amblyseius swirskii can be used in a wide range of crops, such as fruiting vegetables, soft fruits , and ornamental plants . But [...] and other soft fruits, cut flowers (such as roses and chrysanthemums ), and potted plants. Yet, it does have a few preferences. To begin with, swirskii [...] get stuck in them. The crop's glandular hairs form a physical barrier and are also covered with a sticky substance. This means that tomato growers must

• Black leg of seedlings

  substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. Life cycle [...] Pythium belongs to the Oomycetes, a separate group of microorganisms and is therefore not a real fungus. It survives as oospores, resting spores which are [...] General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress

• Help, whitefly! Now what?

  June 2, 2022

  encounter whitefly in your crop, you know that you need to take action as quickly as possible. But where should you start? And what is the most effective [...] More about whitefly control At a Glance: Allies in the Fight Against Whitefly The Spread of Whitefly The How and Why of IPM Swirski-Mite: First Aid for [...] you when whitefly makes your life, and that of your crop, difficult. Compile a step-by-step plan in advance so that you know what action to take if you find

• No Risks for Employees or for the Environment

  October 22, 2019

  Having developed a keen interest in biological crop protection, Plántulas de Tetela started using biological control for sciarid fly in 2003, as chemicals proved [...] ‘Sciarid fly has always been a stubborn pest for us,’ explains Federico Martínez Martínez. ‘Many of our products have a long production time. This extended [...] Koppert’s knowledge and many products are available if a situation arises that calls for them.’ A Vital Aspect Federico Martínez Martínez hopes to make

• Gummy stem blight

  General Mycosphaerella cucumis (Didymella bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in [...] Before cropping: Remove all crop debris and disinfect the greenhouse Choose a cultivar that is less susceptible to internal fruit rot Use clean propagation [...] cucumber crops: Remove all pots and plant parts from previous crop that may serve as inoculum source for the new crop prevent condensation on all plant parts at

• Parasitic wasps

  wasp laying its eggs inside or on a host pest. Here's how it works: Egg laying: A female parasitic wasp seeks out a suitable host pest. The choice of host [...] damage caused by pests, ensuring a higher yield and product quality. Environmental sustainability : Parasitic wasps provide a natural and environmentally [...] growing environments can promote biodiversity, as the use of harmful chemicals decreases. This, in turn, creates a more balanced ecosystem in the crop, which

• Southern European marshland pyralid

  fovealis) is a polyphagous species feeding on a wide range of hosts from 38 plant families. They include ornamental crop plants, such as roses and gerbera [...] the lower strata of the crop, sometimes attacking the stem of the plant as well as the leaves. Late instar larvae burrow into soft woody or herbaceous plant [...] which occurs about a week later, the young larva is visible within the egg. The full-grown caterpillars are 20 to 30 mm long and have a creamy white colour

• Bacterial canker of tomato

  disinfect tools and greenhouse structures Use a crop rotation in field crops of at least two years and alternate with a non-host crop Apply deep-ploughing to stimulate [...] General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional [...] entirely or, if the crop is old, only the plants in the infected area, with a substantial buffer zone. Replanting can only take place after thorough disinfection