Sciarid flies

minute (0.1 to 0.25 mm) and yellowish white in colour. They are laid on the ground surface close to plant roots. The larvae can grow to 5 to 12 mm in length [...] damage to crops belong to the genera Bradysia and Lycoriella . Lycoriella species are mainly found in commercial mushroom cultivation where they can cause [...] generally do little harm to healthy plants, sciarid flies are particularly problematic in cuttings and other young growing plant material. Damage symptoms

Encarsia formosa

the crop, if possible approximately 75 cm under the plant head Avoid to hang cards at places exposed to direct sunlight The dosage of En-Strip or Enermix [...] the host, leading to its death and thereby contributing to the reduction of whitefly numbers. Encarsia formosa is highly adaptable and can adjust its parasitism [...] parasitic wasp, native to temperate and subtropical regions, has become an important natural enemy for farmers and gardeners aiming to reduce the reliance

Cannabis aphid

often settle inside buds to feed. Slowed plant growth; wilted, yellowing leaves. Transmission of viral disease between plants, specifically: hemp streak [...] aphid ( Phorodon cannabis ; a.k.a. bhang aphid or hemp aphid) is a very new pest to North America. It was first seen on cuttings originating from Colorado [...] resembles the hop aphid ( Phorodon humuli ), to the point that microscopic analysis of the head is required to distinguish them. The hop aphid is common in

Neoseiulus californicus

than Phytoseiulus persimilis . It can survive longer than Phytoseiulus persimilis when spider mites are scarce and can control small spider mite populations [...] californicus is a selective predator of Tetranychid mites, i.e. it prefers to feed on spider mites but can also feed and survive on other prey, including other [...] sources. They can also survive longer than Phytoseiulus persimilis in the complete absence of food, remaining in the crop to await the arrival of new prey. Life

Feltiella acarisuga

diapause and can 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 [...] highly effective in the biological control of spider mites . This beneficial insect, native to Europe, preys on various spider mite species, in particular the [...] of Feltiella acarisuga Feltiella acarisuga works best when spider mites occur in colonies and can be used in combination with the predatory mites Phytoseiulus

Shore fly

tenuicosta) do not attack plants directly, as they feed on green algae. However, they can transmit plant diseases and can be a nuisance to greenhouse works by [...] causes cosmetic damage, and sometimes this can occur on such a scale that growth, particularly of young cuttings, can be retarded. Life cycle and appearance [...] larvae are found in the top layer of damp soil, where they also pupate. The adult shore fly is black, about 4 to 5 mm long, and stout with short antennae

Soybean

vary greatly in size and the hull can be black or brown, but also blue, yellow or green. When planting soybean plants, there is considerably more protein [...] so-called legume and indigenous to East Asia. It is extensively cultivated for its edible beans. The fruit of the plant is a hairy pod, that grows clustered [...] protein produced per acre than when planting other crops. Major producers of soybeans are Argentina, Brazil and the United States. Soybeans are now an important

Aphidius colemani

aphids to drop from the leaf and fall to the ground. Although many aphids die as a result, many will survive and migrate to other plants to begin new colonies [...] density and should always be adjusted to the particular situation. Start introduction preventively soon after planting of the crop. Introduction rates typically [...] effective searching behaviour, which enables the wasps to track down and parasitize aphids , even when they are at low density. The behaviour of the female

Citrus mealybug

search for a new feeding place and are capable of moving a reasonable distance over the plant. The male nymph attaches itself to the plant, whereas the [...] lived and can be hard to spot. They are smaller than the females, have two pairs of wings and two long tail filaments. Their sole task is to fertilize [...] citri ) can also appear in cucumber, melon and aubergine. Damage symptoms Although most species of mealybug feed on the aerial parts of the plant, some species

Western flower thrips

prefer to feed on developing plant tissues such as growing tips and flower buds. When these tissues develop further, the leaves and flowers can appear [...] Thrips cause damage to plants by piercing the cells of the surface tissues and sucking out their contents, causing the surrounding tissue to die. The resulting [...] the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations become serious the leaves themselves can shrivel. Western flower thrips