• Early blight

  Post-harvest storage at 0-1 o C. A. brassicae and A. brassicicola : adjust the sowing date to avoid conditions conducive to infection. In greenhouses: avoid [...] solani causes small green to dark brown spots to occur on leaves. Those spots then turn into dark brown angular lesions with a yellow halo restricted by [...] occurs at temperatures from 2-4 °C up to 28-30 °C (optimum temperatures lie between 15 and 28 °C) and at a relative humidity (RH) of over 90% or when the

• Black rot of carrots

  Post-harvest storage at 0-1 o C. A. brassicae and A. brassicicola : adjust the sowing date to avoid conditions conducive to infection. In greenhouses: avoid [...] Alternaria radicina ) is a seed-transferred carrot disease. The seeds are the main source of primary infection and this may lead to death of seedlings. From [...] Alternaria occurs at temperatures from 2-4 °C up to 28-30 °C (optimum temperatures lie between 15 and 28 °C) and at a relative humidity (RH) of over 90% or when

• Click beetles

  skinned. They are up to 25 mm long and usually shiny yellowish brown or light brown with a darker head. Larval development takes 4 to 5 years. When fully [...] beetles are elongate beetles with a hard exoskeleton, with the head deeply retracted into the thorax. When disturbed they lie on their back feigning death and [...] roots and bore into the base of plants. This can cause the plants to wilt and die. Damage is more severe in young plants. Life cycle and appearance of Click

• Orius laevigatus

  laevigatus is used for the control of the following pests: Thrips The natural enemy Orius laevigatus is available at Koppert as Thripor-L . How to use Orius [...] insects in order to establish a population and encourage mating Make sure the material remains undisturbed at the introduction site for a few hours after [...] range from 0.5-10 per m2/release. Releases should be repeated once or twice. Consult a Koppert advisor or a recognized distributor of Koppert products for

• Brown root rot, corky root rot

  cultivation practices. However, this fungus is a poor competitor against a balanced microbial population in soil. How to prevent Brown root rot, corky root rot [...] General Pyrenochaeta lycopersici is a fungal plant pathogen, infecting tomatoes and aubergine. It causes brown root rot and corky root rot. Damage symptoms [...] the roots with lengthwise cracks. No discoloration is present in the xylem tissues which distinguishes it from wilts caused by Verticillium or Fusarium .

• Predatory mites

  crops, using a blower for dispersion is an available option. This approach proves particularly effective when a swift response is required due to a pest invading [...] so knowing the target pest is crucial. Scouting is essential to know where the pest is, how severe the infestation is and to identify the pest. Select the [...] preys on the identified pest. Consult with a Koppert advisor or supplier if you're unsure. Release timing: Timing is essential and depends on factors like pest

• Cutworms

  or orange-yellow with a broad dark marginal stripe. The wingspan is about 40-55 mm and the dorsal thorax is covered with close-lying hairs. The eggs are [...] from these instars is usually observed as a cutting of young seedlings, often causing death of the cut seedlings. Sometimes wilting is observed because of [...] Cutworms The adults of Agrotis spp. have pale grey to grey-brown forewings with a faint kidney-shaped marking and a red spot. They have broad hindwings, evenly

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• Whitefly

  Whiteflies are not true flies , but belong to the order Hemiptera (true bugs ). Together with aphids and scale insects, they belong to the division Ster [...] larvae need a lot of nutrients for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess is excreted [...] consequences: If the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In

• Precautionary measures for product allergies

  and may not be used to diagnose or treat a health-related problem, as it is not a substitute for medical care. If you have or suspect you have a health problem [...] Just as you can be allergic to cats, pollen, and dust mites, it is also possible to be allergic to the natural substances in predatory mites , feeder mites [...] treatment However, if you do come into contact with substances in the products mentioned above and you turn out to be allergic, you may experience symptoms