• Eretmocerus eremicus

  lemon-yellow with green compound eyes and red ocelli, measuring about 0.75 mm, while males are slightly smaller, dark yellow to brown, with distinguishing [...] Whitefly control with the parasitic wasp Eretmocerus eremicus Eretmocerus eremicus is a small parasitic wasp belonging to the family Aphelinidae . This [...] available on cardboard strips as single species ( Ercal ) and in combination with Encarsia formosa (Enermix). Open package carefully inside the greenhouse

• Cottony soft rot

  mycelium, big, dark sclerotia are formed. They can easily be seen with the naked eye and look like rat droppings. The symptoms may occur on stems but also [...] or on the ground. Sclerotia germinate at temperatures between 4 and 26 °C with an optimum between 13 and 15 °C. Germination and infection mostly take place [...] the host cells. On the infected plant tissue white, fluffy mycelium occurs with new dark sclerotia. The fungus also infects seeds and tubers, thereby creating

• Broad mite

  rather large (about 0.07 mm) compared with the subsequent, active stages. They are transparent and speckled with white dots. The larva of the broad mite [...] stems. The growing tips of affected plants acquire a misshapen appearance, with contorted leaves and sporadic brown discolouration caused by cork formation [...] crack open at the site of deformation. Flowers are often discoloured, and with a severe attack, deformed. Extensive damage can be caused by relatively low

• Onion thrips

  into the plant tissue with a saw-like ovipositor. Larvae are light to yellowish green in colour, with a large head and bright red eyes. The colour of the [...] Onion thrips (Thrips tabaci) is found mostly along the main leaf veins, with most damage evident where these veins join. Fruit damage, for instance in [...] and pupal instars can be recognized by their developing wing buds. Compared with the prepupa, the pupa has longer, more developed wing buds and longer antennae

• Spider mites and other mites

  that they cannot be seen with the naked eye and only have four legs. Tarsonemid mites cannot also not be seen with the naked eye but have eight legs. For [...] which can be confused with damage caused by plant viruses. This appears as a bronze or reddish-brown discoloration of the leaves, with the affected areas [...] Control: Plenty of Options with our Comprehensive IPM package for Management of Thrips. Keep Thrips under Control: Plenty of Options with our Comprehensive IPM

• Diglyphus isaea

  prevent the leaf collapsing should it dry out. At first, the pupa is green with red eyes subsequently turning black, and measuring about 1.5 mm. Adult stage: [...] Leaf miner control with the parasitic wasp Diglyphus isaea Diglyphus isaea is a small parasitic wasp belonging to the family Eulophidae within the order [...] visible in the crop. Introduction rates typically range from 0.25-3 per m 2 /release. Releases should be repeated at least 3 times at weekly intervals

• Consumers

  e production of plants and crops. Even though they cannot be seen with the naked eye, these products – which can be used above ground and underground – [...] this way, we hope to make an active contribution to a sustainable society, with safe food in sufficient quantities to feed a rapidly growing population. [...] exclusively to professional growers and farmers. In order to provide you with the best possible service as a consumer, we have drawn up a list of frequently

• Cotton aphid

  cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses reproduction takes place by parthenogenesis, with unfertilized [...] generations of females. Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. The [...] smaller (from 0.9 mm), and yellow or cream-coloured. Cotton aphids have red eyes and relatively short antennae.

• Phytoseiulus persimilis

  webbing. It can move within the web with ease. This has the advantage that an outbreak is quickly and effectively dealt with, but the disadvantage is that it [...] mites are detected in the crop. Introduction rates typically range from 2-50 per m2/release. Releases should be repeated once or twice at weekly intervals [...] mites , but has a preference for eggs. The predatory mites pierce the prey with their mouthparts and suck out the contents. The adult Phytoseiulus persimilis

• Know Your Enemy - A closer look at Whiteflies

  August 14, 2024

  are not true flies but belong to the order Hemiptera (true bugs ). Together with aphids and scale insects, they belong to the division Sternorrhyncha. In [...] rest of their larval development. The fourth larval instar, when the red eyes of the adult whitefly become visible, is also referred to as a 'pupa.' Whitefly [...] emerged adults have two pairs of transparent wings, which later become covered with a white, waxy powder, giving the insect its characteristic appearance. Adult