• Gummy stem blight

  tools and hands of workers. The ascospores are the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease downwards [...] may occur. In cucumber, the most important symptom is internal fruit rot, which can only be recognized from the outside by the small narrowing of the tip [...] the leaves Pick flowers within two days after opening in areas suspected of disease (only feasible in high-wire crops) Pick and remove dead and diseased leaves

• Fusarium head blight or scab

  General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] ascospores. In general, most Fusarium specieshave a similar life cycle. Fusarium overwinters for many years in the soil and on crop residues of infected plants [...] Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place as infection of the roots

• Tobacco whitefly

  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 [...] n. Bemisia tabaci is known for the transmission of viruses, including TYLCV in tomato. The consumption of plant sap and secreting of honeydew by whiteflies [...] identified on tobacco in Greece in 1889, hence the name tabaci . It has subsequently been found in most tropical and subtropical countries of the world. The original

• Sportnem_leaflet_EN_A4_-_Koppert_20230441_-_DEF_LR.pdf

  warm up in spring. The common crane fly Tipula oleracea, which is present in parts of Europe and the USA, has two generations per year, one in autumn, [...] garden chafer (Phyllopertha horticola) is present in Europe and parts of Asia. The males can be seen in early summer in swarming flights just above the soil [...] again in spring. Sportnem-H for the control of chafer grubs Sportnem-H contains the entomopathogenic nematode Heterorhabditis bacteriophora, which is particularly

• Municipality Doetinchem: Entonem nematodes managing oak processionary caterpillar

  natural enemies of the oak processionary caterpillar. As already stated, the use of nematodes is an important part of this. Entonem is without doubt an [...] think it is important to maintain the biodiversity in the centre, and public opinion is quite sensitive to spraying here. We worked in consultation with [...] decided that in spring we would start using Koppert’s nematode product Entonem . A major advantage is that the bycatch of other caterpillars is much lower

• Aphiscout

  the aphid, which converts into a leathery mummy. The adult parasitic wasp emerges through a hole in the mummy. The first mummies are noticed in the crop [...] occurring aphids . Mode of action Adult parasitic wasps emerge from the mummies and females lay their eggs into aphids . The next generation of parasitic wasps [...] n. Visual effect Parasitised aphids turn into mummies which look slightly different depending of the parasitic wasp species. Pack size 250 mummies: 20%

• Early blight

  stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the [...] humidity (RH) of over 90% or when the leaves are wet. Small differences in optimum temperature occur between species, but in general the risk of Alternaria [...] rotation, in particular when spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving

• Orius laevigatus

  bodies of their prey. The predatory bug Orius laevigatus is used for the control of the following pests: Thrips The natural enemy Orius laevigatus is available [...] for thrips control Orius laevigatus is a small yet highly effective predatory bug used in biological pest control of thrips . This beneficial insect has [...] laevigatus is available in a bottle ( Thripor-L ) Shake bottle gently before use Spread material on clean rock wool slabs, leaves and/or in application

• Citrus mealybug

  effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order [...] an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting rid of the excess sugars in the form of honeydew. Charac [...] reduced level of photosynthesis in the leaves also reduces flower and fruit production. In ornamental crops, the mere presence of mealybugs is sufficient

• Rose aphid

  aphid, Macrosiphum rosae , is a serious and often abundant pest of roses. It is virtually cosmopolitan and widely spread in Europe. Damage symptoms In [...] appearance of Rose aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] Wingless females of the 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