• Canadian Thrips in Greenhouses & Grow Rooms

  September 19, 2024

  Some are predators or harmless pollen and fungal feeders, but the most notable are those found feeding on plants. These, 25 or so species, are some of [...] the thrips are light-colored or dark-colored. Larva color, movement, behavior, damage, and how the population is distributed on the plant are also important [...] about 1-3 weeks. However, there are also great resources out there to attempt an in-house identification. For a full key on how to identify Canadian thrips

• Sciarid flies

  feeding on the roots. The larvae feed mainly on decaying plant material and on algae and fungi present in the soil. They, however, can also feed on root hairs [...] occur the whole year round. The eggs are minute (0.1 to 0.25 mm) and yellowish white in colour. They are laid on the ground surface close to plant roots [...] . Lycoriella species are mainly found in commercial mushroom cultivation where they can cause enormous damage. Sciarid flies are usually found in damp

• Encarsia formosa

  products En-Strip Enermix Expand all items How to use Encarsia formosa The parasitic wasp Encarsia formosa is available on cardboard strips as single species ( [...] inside the whitefly nymphs, which are then consumed from the inside out by the developing larvae. The larvae feed on the internal tissues of the host, [...] based on the density of the whitefly population, making it a valuable tool in integrated pest management . The wasps themselves do not feed on whiteflies

• Rose aphid

  of buds and new shoots. Foliage and flowers are often disfigured and contaminated with sticky honeydew on which black sooty moulds develop. Life cycle [...] rose aphid are 1.7-3.6 mm long and green or deep pink to red-brown. The antennae and sometimes the head is dark in colour. The siphunculi are black and [...] netically. Large colonies of aphids can build up on roses in spring and summer; sometimes shoots are completely covered by aphids. In summer, winged aphids

• Shore fly

  They feed on algae. Other shore fly species have diverse feeding habits but the larvae of most species feed on rotting material. Shore flies are commonly [...] the adult fly. The eggs are laid singly and are bean-shaped. A first instar larva is translucent white. Second instar larvae are brownish, less translucent [...] feed on green algae. However, they can transmit plant diseases and can be a nuisance to greenhouse works by their sheer numbers. Frass deposited on leaves

• Shore fly

  environments. In greenhouses, adults feed on algae and their larvae on algae and decaying organic matter on planting substrate. Growers consider shore [...] primarily on microscopic algae, bacteria and other unicellular organisms, they do not cause any direct damage to plant production. However, they are considered [...] shore flies are 4–5mm long with large eyes, thick bodies and short antennae, and their wings can have greyish brown patches. While shore flies are strong,

• Stable fly

  “sharp mouth”; a fitting moniker, as these flies are the only members of the Muscidae family that feed on mammalian blood (particularly cattle and horses [...] superficially resemble house flies, but are lighter in colour and have biting mouth parts. Both male and female flies feed on animal blood, and females must be [...] eggs. They are highly mobile insects and can travel up to 20 km in search of new hosts. Damage symptoms Stable flies typically congregate on the legs of

• Shallot aphid

  shallot aphid on strawberries invokes a strong host plant reaction. Infested plants become severely stunted when growth starts in spring. Petioles are shortened [...] leaves curled and twisted. Blossom trusses are also affected, fruits remain small and yield is reduced. On bulbs and shallot, the aphids often occur at [...] Wingless females of the shallot aphid are 1.1-2.2 mm long and shiny brownish green to dirty yellow. Their legs and antennae are pale, apart from the ends of the

• Japanese beetle

  and drop. The adults are gregarious, usually beginning to feed on foliage at the top of a plant and working downwards. The larvae are most abundant in well-kept [...] developing embryo can be seen within the eggs that are close to hatching. Popillia japonica larvae are typical scarabaeid grubs. The head is yellowish-brown [...] C-shaped position in the soil. Newly-hatched grubs are about 1.5 mm long and translucent white. There are three instars. First and second instars reach a

• Lyprauta

  which are small earthworms of the family Enchytraeidae. Damage symptoms The symptoms are superficial damage on roots. Especially the root tips are affected [...] dark-coloured mark on the apical wing parts as well as two smaller marks. Adults of L. chacoensis have only one small dark-coloured spot on their wings. The [...] The eggs of Lyprauta sp. are greyish-black and spherical. Larvae of Lyprauta sp. are a transparent greyish white and have a long slender body. The head