• Maximize pollination in tomato

  known as bite marks, turn brown. These bite marks serve as indicators to assess the bumblebees' pollination activity. A single visit by a bumblebee is typically [...] closed flowers from different areas. It is essential that all closed flowers exhibit bite marks. Closed flowers offer a precise representation of the pollination [...] number of bite marks diminishes to only one or two per flower, it is advisable to introduce a new bumblebee hive. Temperature and humidity considerations Bumblebees

• Limonica

  Releases should be repeated once or twice, or until control is achieved. Consult a Koppert advisor or a recognised distributor of Koppert products for advice [...] conditions Amblydromalus limonicus is most effective at temperatures between 13 and 25°C (55 and 77°F). A. limonicus is sensitive to relative humidity below [...] should always be adjusted to the particular situation. Start introduction as soon as the first pests are detected in the crop. Introduction rates typically

• Impatiens thrips

  mostly been able to spread as a consequence of the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition [...] the plant is reduced by loss of chlorophyll. When infestations become serious the leaves themselves can shrivel. Echinothrips americanus is often found [...] General Impatiens thrips (Echinothrips americanus) is an increasing problem in greenhouse cultivation, having spread to many countries within the last

• Woolly apple aphid

  General The woolly aphid, Eriosoma lanigerum , is a serious worldwide apple pest. It is probably of North American origin and has been distributed to other [...] mealy wax. The siphunculi are pore-like and the cauda is small. Eriosoma lanigerum overwinters as “naked” nymphs (without wax covering) on apple trees [...] infested apple rootstocks. It can occasionally also be found in pear, quince and a few other woody Rosaceae. Damage symptoms Galls are often produced on infested

• Chrysanthemum

  Traditionally, yellow is the main colour of this flowering plant. Nowadays, a wide range of other colours is available such as white, purple and red. [...] called mum or chrysanth, is a flowering plant that belongs to the genus Chrysanthemum of the family of Asteraceae. The plant is originally from Asia and [...] majority of the different species derive from East Asia. Especially in China a wide range of varieties and cultivars has been developed for commercial propagation

• Rapeseed

  belongs to the family of Brassicaceae and is a flowering plant with bright yellow flowers. The plant is also known as rape, oilseed rape, rappi, rapa, rapaseed [...] (one specific group of cultivars). Rapeseed is primarily grown for its oil rich seeds and nowadays the species is the third-largest provider of vegetable oil

• Minusa

  should always be adjusted to the particular situation. Start introduction as soon as the first mines are visible in the crop. Introduction rates typically [...] until control is achieved. At higher temperatures (>25°C/77°F) and/or higher infestation rates it might be better to use Miglyphus . Consult a Koppert advisor [...] advisor or a recognised distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions Minusa is more effective

• Yellow rose aphid

  hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves. Retarded growth and defoliation reduce yield. Plant sap is rich in [...] the same time, photosynthesis in the leaves is reduced, affecting production. The yellow rose aphid is also a vector of several viruses attacking strawberries [...] yellow rose aphids have a brownish head; the body is bright yellow to yellow-green or green and rather shiny. Winged aphids have a bright green abdomen with

• Cryptobug

  temperature for use of Cryptobug is 16°C/61°F. However, as Cryptolaemus montrouzieri favours high temperatures, Cryptobug is most effective at temperatures [...] be made in infested areas only and repeated if necessary. Consult a Koppert advisor or a recognised distributor of Koppert products for advice on the best [...] grape mealybug combine with Citripar . Storage time after receipt Apply as soon as possible after receipt. If necessary, the product can be stored for 1-2

• Gummy stem blight

  General Mycosphaerella cucumis (Didymella bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in [...] cropping: Remove all crop debris and disinfect the greenhouse Choose a cultivar that is less susceptible to internal fruit rot Use clean propagation material [...] round and extending lesions may occur. In cucumber, the most important symptom is internal fruit rot, which can only be recognized from the outside by the small