• Phytophthora blight

  causes water-soaked lesions with vague borders and white fluffy fungal growth on the leaves. The centre is grey-brown with a light-green edge. On the stem [...] resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures which infect the host. Zoospores are spores with flagellae [...] flagellae which enable them to move through water. Infection is usually from the root to the foot, but direct infection of the foot also occurs. Exudates leaking

• Green peach aphid

  is, with unfertilized viviparous females continuing to produce new generations of females. Aphids moult four times before reaching adulthood. With each [...] now a pest with a world-wide distribution. The green peach aphid ( Myzus persicae subsp. persicae ) is a particularly polyphagous aphid with summer host [...] sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the

• Spider mites and other mites

  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 [...] can be an effective way to keep plant mite populations under control. Mite control videos Take a look at the video or go to our Youtube channel to see our [...] pairs of legs. During this stage, the larvae start to feed on plant sap and undergo molting to transition to the next stage. Nymph: After the first molt, the

• Black leg of seedlings

  produced. Zoospores are spores with flagellae, which enable the spores to move through water. The zoospores are chemically drawn to the growing roots of young [...] spots. On the infected plant, new sporangia with zoospores are formed, that allow the disease to spread to neighbouring plants. The zoospores disperse [...] the skin from the root cortex with a finger nail. Life cycle and appearance of Black leg of seedlings Pythium belongs to the Oomycetes, a separate group

• Integrated Pest Management

  can also be an effective way to control pests without resorting to chemicals. Mass trapping techniques like Rollertraps or Horiver contribute to control of [...] often referred to as IPM, is a sustainable and environmentally responsible approach to pest management. It employs a combination of strategies to prevent and [...] adjustments. The IPM cycle is an ongoing process that incorporates the principles mentioned above. It's a dynamic approach that adapts to changing conditions and

• Natutec Airobug

  material to be released and close the lid Attach the dosing pots to the Airobug Turn on the switch of the Airobug to start releasing the material How to use [...] components: Carrying case with two adjustable dosing and mixing pots Batteries (24V) with charger The Airobug for mono-rail includes a lift to attach the blowing [...] the Airobug to go back and forth in the bay Calculate the required dosage per bay Calculate the settings of the dosing pots together with a Koppert consultant

• Powdery mildew

  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 only opening [...] pepper cultivars react to powdery mildew infection by dropping leaves that are not infected yet. It depends on the cultivar how soon after infection this [...] very resistant to water so rain often limits the epidemics and spore dispersal by rain is negligible, since spores explode when in contact with water for no

• Early blight

  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 [...] of leaves, Alternaria solani can spread to the flowers (especially dangerous in crops for seed production) and to the crown. Sporulation of Alternaria occurs [...] conditions. Infection may take place within a few hours, with lesions occurring as rapidly as two to three days later and sporulation within five days. Infection

• Fusarium wilt

  small wounds, for example where lateral roots branch off from the tap root. How to prevent Fusarium wilt Remove or destroy crop residues Choose resistant cultivars [...] General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] plantations may die and the soil may not be suitable for planting for many years to come. Life cycle and appearance of Fusarium wilt Fusarium oxysporum has many

• Beneficial Nematodes against Horticultural Pests

  together with other beneficial organisms; working together to either partly substitute, and sometimes replace the use of conventional pesticides, to manage [...] measure much less than a millimeter, so cannot be seen with the naked eye. As small as they are, they play an important role in the biological control of many [...] in horticultural crops Which nematode controls which pest best? This is an overview of the nematode-pest combinations that have been tested successfully