• Predatory Mites Whitepaper

  January 1, 1970

  limonicus has the highest numerical response to whiteflies and is the best option when the pest pressure is high. • In laboratory trials the oviposition [...] healthy, good growing plant canopy the humidity close to the leaf surface, where the mites live, is higher than in the surrounding air. High humidity, e.g. at [...] positive or negative effect on the population development of pests and beneficials depending on the temperature and humidity ranges and extremes. Temperture (ºC)

• Thrips

  January 1, 1970

  egg, she makes an opening in the plant tissue. The eggs are laid in leaves, flower petals and in the soft parts of stalks. On the leaves of sweet pepper, [...] are smaller than the adults and lack wings. Depending on the species, thrips either pupate on the plant or in the ground. The pre-pupal and pupal instars [...] Thrips larvae are usually pale or transparent in color and have a similar shape to the adults but are smaller and lack wings. One of the most distinctive

• Cabbage moth

  January 1, 1970

  marking in the middle. The hindwings are light brown with a rather inconspicuous spot in the middle. Head and thorax are grey-brown with white spots, and [...] and the abdomen is a pale, greyish brown. The moth flies only at dawn and dusk, hiding in the crop during the day. Several days after emerging from their [...] to black. In younger instars, the relatively large head capsule is conspicuous. In older instars, the lighter colour of the bands between the body segments

• Predatory mites

  January 1, 1970

  deutonymphal and adult stages the mites feed almost continuously. Protonymphs and deutonymphs are similar to the adults in appearance, but smaller in size. Predatory [...] pesticides. Koppert is the pioneer in the development of predatory mite solutions, starting in 1967 with the rearing of the predatory mite Phytoseiulus [...] mites, food, and carrier materials. The mites breed within the sachets and subsequently disperse into the crop. These release sachets are constructed from

• Garden chafer

  January 1, 1970

  feeds on roots of grasses and clover. The adults feed on the leaves of trees like oak, hazelnut and birch and on the flowers and developing fruits of, for [...] roses and cherries. Damage symptoms The garden chafer ( Phyllopertha horticola ) does most of its damage in the larval stage when it feeds on the roots [...] ground within stems of plants and on strawberry fruits lying on the ground. Both adult beetles and larvae are polyphagous and feed on a wide variety of plant

• Beneficial microorganisms

  January 1, 1970

  hosts. The fungi produce spores that attach to the insect's cuticle (outer covering). Once attached, the spores germinate, penetrate the cuticle, and colonize [...] include fungi, bacteria and viruses that naturally occur in environments such as soil, water, and air. These microorganisms are harnessed for pest control [...] anisopliae and Isaria fumosoroseus and the bacterium Bacillus thuringiensis . Beneficial microorganisms for pest control How it works Infection and colonization:

• Grapevine powdery mildew

  January 1, 1970

  according to the phenological growth stage and the severity of the infection. Early signs manifest as chlorotic (pale green to yellow) spots, which rapidly [...] while shoots and flowers exhibit stunted growth and poor fruit set. During berry development, the pathogen colonizes the epidermis, causing the skin to lose [...] bodies) attached in the bark crevices and plant debris. In spring, chasmothecia release ascospores during periods of favorable temperature and moisture, initiating

• Asian citrus psyllid

  January 1, 1970

  widely distributed in southern Asia and the disease is responsible for the destruction of several citrus industries in Asia and Africa. In North America, it [...] through most of the southern states and Mexico however the state of Florida is the most affected area by the vectored disease. Damage symptoms The psyllid is [...] eye spots at maturity. Eggs are anchored to plant tissue in an upright position, and large numbers of eggs may be found on a single spot. Nymphs are green

• Western flower thrips

  January 1, 1970

  insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. They are inserted [...] Compared to the prepupa, the pupa has longer, more developed wing buds and longer antennae that are curved back over the head. The prepupal and pupal instars [...] patches on leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll.

• Rhizoctonia solani

  January 1, 1970

  sclerotia are visible. They fall off the plant onto the soil and thus increase the pathogen density in the soil for the next crop. The mycelium grows in a typical [...] infection of the foot. The fungus may also infect plant parts in contact with the soil and from there can grow upward. Lesions are brown and rot on fruits [...] On the diseased areas, sclerotia can be seen, but they vary in size and colour and are therefore not a good feature to determine the cause of the disease