• Pear psylla

  Europe and can inflict serious damage in pear orchards. Damage symptoms Pear psylla feeding leads to growth inhibition and malformation of leaves and fruits [...] leaves and developing fruits with a sticky black layer. Life cycle and appearance of Pear psylla Adults pear psyllas are 2-3 mm long and orange red to blackish [...] become active in spring and start to feed on young leaves and flowers. Eggs are deposited in crevices of the bark of twigs and hatch after about 3 weeks

• Rose

  plant can vary in shape and size, but are often ornate and bright coloured. Colours range from white to yellow, pink and orange to red, the most popular [...] belongs to the genus Rosa of the family Rosaceae. Rose also refers to the flowers the plant bears. There are more than one hundred rose species and thousands [...] thousands of different cultivars. The rose is a woody, perennial plant which usually develops as a shrub, climbing or trailing with a stem that has sharp thorns

• Leek moth

  countries and has been introduced to parts of Canada. The larvae of Acrolepiopsis assectella feed on cultivated Allium species, primarily leek and onion, [...] stages, namely egg, five larval stages, a pupa and the adult moth. The eggs are small, white and elliptical and are laid singly on the leaf of Allium plants [...] but also garlic and chives. Damage symptoms The vegetative and flowering stages are most widely affected, but the seedling stage is sometimes affected

• BULLETIN_VIDI_FORTUM___AQ10_31.1.22_K.pdf

  biostimulant was tested at a low rate and high rate, to represent the lower and upper rates being applied to different crops in various situations. % A. [...] which is normally applied to a range of edible crops to enhance vegetative growth. Biostimulants based on seaweed extracts have long been advocated as potential [...] ultimately lead to better germination under a range of less favourable phylloplane conditions, which in turn could lead to improved infection rates and establishment

• Shallot aphid

  Petioles are shortened and leaves curled and twisted. Blossom trusses are also affected, fruits remain small and yield is reduced. On bulbs and shallot, the aphids [...] plants. Life cycle and appearance of The shallot aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety [...] 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 antennae and the tarsi. The siphunculi

• Broccoli

  looks a bit like a tree and branches out from a single thick, edible stalk. Broccoli (both the head and the stalk) can be cooked and eaten as a vegetable [...] plant. When it comes to botanical classification, the broccoli plant is categorized as part of the Italica cultivar group that belongs to the species Brassica [...] Brassica oleracea. Broccoli looks a lot like cauliflower, which belongs to a different cultivar group of the same species. The plant has a large, flowering

• Buckthorn-potato aphid

  viruses. Life cycle and appearance of Buckthorn-potato aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety [...] buckthorn- potato aphid are 1.1-2.4 mm long and bright pale green to yellowish green. The antenna are relatively short and barely exceed half the body length. [...] the underside of leaves of their summer hosts and start to reproduce parthenogenetically. Both wingless and winged forms are produced parthenogenetically

• Black bean aphid

  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 [...] Black bean aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction [...] highly polyphagous, and attacks a wide range of other crops. Damage symptoms Economic damage by black bean aphid is mainly due to direct feeding damage

• Predatory insects

  y in controlling aphids and spider mites . Gall midges have a unique and interesting life cycle that contributes to their effectiveness as biological control [...] their strong jaws to grasp and consume aphids at a high rate. The larvae are highly mobile and actively seek out aphid colonies, helping to keep their populations [...] skilled in controlling whitefly and caterpillars but also contributes to the control of spider mites , aphids , and leaf miner larvae. For thrips control

• Codling moth

  larvae are up to 20 mm long, initially whitish and later pale pinkish white, with a brown head and a pale anal plate. The pupa is 8-10 mm long and yellowish [...] Infested fruits usually ripen prematurely and drop off. Life cycle and appearance of Codling moth The adults have a wing span of 15-22 mm, blackish-brown [...] pomonella ) is a notorious, worldwide pest of apple and also occasionally of pear, quince, peach and other fruits. It is very common in Europe. Damage symptoms