• Feltiella acarisuga

  The natural enemy Feltiella acarisuga is available at Koppert as Spidend . How to use Feltiella acarisuga The predatory gall midge Feltiella acarisuga is [...] from the eggs, the midge larvae start to feed on spider mite eggs, nymphs and adults. They use their mouthparts to first immobilise their prey and then [...] consume 15 adult spider mites or up to 50 mite eggs per day. They are aggressive and adapt the amount of food they consume to the density of the spider mite

• Hop

  vigorous grower with the ability to extend up to 20 inches a week, and even 50 ft tall in one season. They are typically trained on strings up to 25 ft tall [...] Although frequently referred to as hops “vine”, this plant is technically a bine. Bines have stout stems with stiff hairs to aid them in climbing. They are [...] long life cycle, with the continued popularity of microbrews across the globe, genetics for flavoring have dictated how long these plants stay in the ground

• Rice root aphid

  this pest’s life cycle takes place underground, so it may be difficult to identify an infestation. These insects can reproduce year-round indoors. However [...] give birth to live offspring instead of laying eggs. Damage symptoms Because they suck the plant’s vital sap from the roots, plants infested with rice root [...] darker than the wingless form, with a brown-black head. Aphids in the winged stage will emerge from the soil and fly away to colonize other plants. Rhopalosiphum

• European red mite

  in diameter, dark red, and oval with small ridges running top to bottom, with a thin stalk on top. They look a bit like an onion. Adult females are about [...] mainly on the undersides of leaves but moves to upper leaf surfaces when the lower side becomes crowded. Contrary to the two-spotted spider mite , Tetranychus [...] all important apple growing areas of the world. European Red Mite Control with Predatory Mites Damage symptoms Feeding of European red mites on leaves of

• Japanese beetle

  actions were taken to prevent further spread. The Japanese beetle is on the A2 list of the European Plant Protection Organization (EPPO). To prevent its further [...] spread in Europe, occurrences outside the known area in Italy need to be reported to the National Plant Protection Authorities. Damage symptoms Skeletonized [...] the eggs that are close to hatching. Popillia japonica larvae are typical scarabaeid grubs. The head is yellowish-brown, with strong, dark-coloured mandibles

• Downy mildew of Cucurbits

  most fluffy symptoms are found. How to prevent Downey mildew Choose resistant cultivars Use a wide crop rotation with non-host crops Prevent a humid m [...] temperature is to this, the shorter the leaf wetness period that is required. Inside the plant, the pathogens produce haustoria, small organs with which the [...] mildew Pathogens causing downy mildew are not fungi but Oomycetes and related to Pythium and Phytophthora. They survive as oospores. From these oospores or

• Atheta

  time from egg to adult takes about three weeks at 25ºC. After that period the adult predatory beetle will be active for approx. three weeks. An adult female [...] short life expectancy and therefore need to be introduced into the crop as soon as possible after receipt. Failure to do so can have a negative impact on their [...] When to use Atheta? Use Atheta for the biological control of fungus gnats ( Sciara ), shore flies ( Scatella stagnalis ), and western flower thrips (

• Shallot 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 [...] viviparous females continuing to produce new generations of females. Aphids moult four times before reaching adulthood. With each moult they shed white skin [...] brownish green to dirty yellow. Their legs and antennae are pale, apart from the ends of the antennae and the tarsi. The siphunculi are short an swollen towards

• Stable fly

  animal blood, and females must be engorged with blood to lay eggs. They are highly mobile insects and can travel up to 20 km in search of new hosts. Damage symptoms [...] develop secondary infections. Overheating if animals begin to bunch together (an avoidance strategy to reduce fly bites) when temperatures are high. Transmission [...] livestock to feed, and the population size can be assessed by counting the number of Stomoxys on the animals’ front legs. The flies become an economic concern

• Glasshouse potato aphid

  is, with unfertilized viviparous females continuing to produce new generations of females. Aphids moult four times before reaching adulthood. With each [...] are yellow-green, with a brown head, a dark thorax and a dark abdomen that has pale to dark transverse bands. The body shape is similar to wingless females [...] 0 mm long) and oval in shape. It has a light yellow-green to brown-green colour, and has an overall shiny appearance. Antennae are marked by a number of