• Olive scale

  Removal of large quantities of sap debilitate the plant and can cause wilting, desiccation of tissues and dieback. Life cycle and appearance of Olive scale [...] affected. Damage symptoms Olive scales produce large amounts of honeydew causing build-up of sticky deposits on nearby surfaces. The honeydew may attract [...] veins on the lower sides of mature leaves. Many young females migrate to twigs and branches later and remain there for the rest of their lives.

• Mottled arum aphid

  they produce large amounts of honeydew, which provides an excellent substrate for the growth of black sooty mould. Large areas of mould covering the leaves [...] Damage symptoms Large colonies of mottled arum aphids can greatly reduce plant vigour and kill the plant through sucking of plant sap. However, also at lower [...] Reproduction of the mottled arum aphid is entirely by parthenogenesis, with unfertilized viviparous females continuously producing new generations of females

• Black vine weevil

  within the stems of the plants. Both adult beetles and larvae are polyphagous and feed on a large number of plant species. High populations of larvae can destroy [...] ornamental plants. Life cycle and appearance of Black vine weevil The life cycle of the black vine weevil consists of an egg, 6 or 7 larval instars, a pupal instar [...] caused by the feeding of the larvae on the roots. After the roots have been destroyed the larvae move into corms, rhizomes and stem bases of plants. Larvae can

• Roots Growers positive about Mycotal against whitefly

  We used the same dosage of Enermix in the three test plots, and slightly higher dosages of the predatory bug. As a result of that choice, we’ve yet to [...] year, we have very little leeway in terms of spraying frequency. We therefore need to leverage the full potential of biological plant protection.’ To combat [...] to find out how much of the effect can be attributed to Mycotal.’ Greater peace of mind Nevertheless, Sam is adamant that Mycotal has helped to combat

• En-Strip

  whitefly ( Bemisia tabaci ). Mode of action Adult female parasitic wasps parasitise the third and fourth larval stage of the whitefly . Additionally, host [...] it may be better to switch to the use of Enermix or Ercal . Consult a Koppert advisor or a recognised distributor of Koppert products for advice on the best [...] Avoid hanging cards at places exposed to direct sunlight Dosage The dosage of En-Strip depends on climate, crop and whitefly density and should always be

• Beetles

  species, Coleoptera is the largest of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in [...] belong to the order Coleoptera, a well-known group of insects that are easily recognizable on account of their hard wing covers (elytra). With more than 350 [...] fly at all. Beetle damage Both larvae and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips and roots or chew

• Caterpillars

  addition to consumption of the plant, caterpillars also spoil the plant with the large quantities of frass they leave behind. Life cycle of caterpillars Caterpillar [...] crops. Biological control of caterpillars combines monitoring and control strategies that target different life stages of the pest: Beneficial nematodes [...] damage crops. Most of them feed on nectar. In contrast, the caterpillars have biting and chewing mouthparts and can devour large amounts of plant tissue. Many

• Boisduval scale

  be a pest of orchids, palms, pineapples, bananas and many other plants. Damage symptoms The first sign of Boisduval scale is the presence of the scales [...] and stems of plants. On palms, Boisduval scales are normally found on the leaves and stems. Toxic saliva injected while feeding causes necrosis of tissue [...] portion of the petiole that is covered by the sheath. Small infestations on orchids cause extensive discolouration. Life cycle and appearance of Boisduval

• Black bean aphid

  regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other crops. Damage symptoms Economic damage [...] damage is caused through the transmission of plant viruses. Infestations start usually at the younger parts of the plant but can spread all over the plant [...] therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit

• Blackcurrant aphid

  The distal third of the siphunculi is slightly swollen. In spring, the blackcurrant aphid lives on the underside of the young leaves of currant plants. [...] . Life cycle and appearance of Blackcurrant aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in [...] and North America. Damage symptoms Blackcurrant aphids produce large amounts of sticky honeydew on which black sooty mould fungi grow. Leaves and fruit quickly