• Pollination checklist Growing lights

  and other means, or by the sun in spring and late autumn. The later the lights are turned on, the more time (overlap with daylight) there is for the bumblebees [...] allow the bumblebees to fly when there is enough daylight present. Wireless BeeHome system (WBH) can be controlled either by using a timer or by connecting [...] than 28 °C temperatures you can place them lower in the greenhouse. 13:00 Vertical placement will have a negative effect on the development of the hives

• Greenhouse whitefly

  whitefly need a lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess is excreted [...] the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight, leaves [...] leaf damage can in turn influence the development of fruit and lead to a reduction in yield. The honeydew deposited on fruit makes it sticky. Dirt adheres

• Flowering potted plants

  species are: Poinsettia is well known and popular for its large red, white and green leaves, especially around Christmas. Begonia is a perennial flowering [...] used as ornamental houseplants in countries with colder climates. Kalanchoe is a tropical, succulent flowering plant and a genus that consists of about 125 [...] 125 species belonging to the family of Crassulaceae . Hibiscus is well known for its large, ornate flowers which are trumpet-shaped. These flowers have

• Feltiella acarisuga

  on various spider mite species, in particular the two-spotted spider mite . Feltiella acarisuga is a key component in integrated pest management (IPM) [...] acarisuga is available at Koppert as Spidend . How to use Feltiella acarisuga The predatory gall midge Feltiella acarisuga is available in a bottle ( Spidend [...] grown larva is about 2 mm long. At the end of the last larval stage, the larva spins a white cocoon near a leaf vein and pupates within it. By closely monitoring

• Black currant

  About The black currant ( Ribes nigrum ) is a woody shrub and the plant is well known for its savory berries. It belongs to the family of Grossulariaceae [...] of both central and northern Europe and northern Asia. The plants grows well in damp and fertile soils. During summer, clusters of small and glossy black [...] These can be picked by hand or by machine. The berries are extremely rich in vitamin C and polyphenol phytochemicals. Nowadays, black currants are extensively

• Veni Calcium

  foliar fertiliser, bringing the calcium quickly where it is needed. The calcium in the product can easily be taken up by the plant. Pack size 5 and 20 litre [...] from 2-5 litres/ha Applications should be repeated a number of times Consult a Koppert advisor or a recognised distributor of Koppert products for advice [...] Calcium provides a direct source of calcium to the plant which can easily be taken up. Crops All crops. Mode of action Veni Calcium is applied as foliar

• Pollination under artificial lights

  December 18, 2018

  coatings, screens and filters in greenhouses that may inadvertently restrict light. It even informs you how to respond in the case of a snowfall, for example. [...] ’ system in 2005 which ensured that bumblebees only flew at moments when there was sufficient daylight. The next innovation came in 2010 when Koppert [...] practice advice. In 2015 it began to support a horizontal hive placement system by Metazet for optimal placement under artificial light. It then continued

• Black bean aphid

  Aphis fabae , is widespread in temperate regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other [...] Damage symptoms Economic damage by black bean aphid is mainly due to direct feeding damage. Indirect damage is caused through the transmission of plant viruses [...] growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season, the death

• False spider mites

  plant. In some crops, plants can become misshapen, presumably because the mites secrete a substance while feeding, that is poisonous to the plant. In places [...] and egg-shaped when seen from above, with their dorsal surface showing a net-like pattern. The eggs are a clear red colour and elliptical in shape. They are [...] are laid in a fold in the leaf or along the mid-vein, often in dense clusters of several hundreds.

• Root and crown rot of strawberry

  areas in crown and root of strawberry. Plant development is slow, growth is retarded and rooting is poor. Transplants look weak and may die. It is hard [...] New diseases in strawberry have been ascribed to Pestalotiopsis clavispora in the case of root and crown rot (of strawberry), first found in The Netherlands [...] Pestalotiopsis longisetula in the case of leaf spots, such as leaf spot of strawberry and fruit rot reported mainly from Brazil. The genus is quite complex, so