Artificially lit crops pollination advice

orientation is seriously disturbed as snow reflects 90% of UV-light. When snow covers the greenhouse, it acts as an effective UV filter, affecting pollination [...] bees to fly only when there is sufficient daylight (e.g., between 10:00 a.m. and 3:00 p.m.). If the energy screen remains closed for a full day, it's better [...] As bumblebees rely on sufficient daylight, artificial lighting can be used to ensure good pollination conditions. As bumblebee may face orientation problems

Click beetles

Click beetles are elongate beetles with a hard exoskeleton, with the head deeply retracted into the thorax. When disturbed they lie on their back feigning [...] usually shiny yellowish brown or light brown with a darker head. Larval development takes 4 to 5 years. When fully grown the larvae pupate in the soil in summer [...] feigning death and then suddenly propel themselves into the air with a audible click. Hence their name. Their larvae are called wireworms and feed on the roots

Root rot of carrot

cause similar symptoms, which are collectively known as black spot diseases. When carrots are stored during winter, diseases on the carrot roots can continue [...] have been identified as the most prevalent black spot pathogens in Northwest Europe. Damage symptoms Rhexocercosporidium carotae is a slow-growing fungus [...] Cercospora and Alternaria dauci . Cercospora prefers younger leaves. A. dauci starts mainly along the leaf edges. Rhexocercosporidium infection can cause

Caterpillars

of all lepidopteran families. Most adults of this family are nocturnal. The caterpillars mostly pupate in the ground. Another family containing several [...] can rapidly decimate a plant. Very small caterpillars are not able to chew and therefore graze the underside of leaves. This causes a window effect where [...] caterpillars are often found in groups, spreading out over the plant as they grow larger. As their size increases, so too does the damage they inflict: leaves

HyFood takes habanero to another level with biological control

thrips in time and release in a timely manner the beneficial that each one requires and thus be able to harvest a good product". A certified product at the [...] the U.S. market, one of the most important and demanding at a global level. Looking for a reliable partner To be consistent with its philosophy, HyFood [...] was vital. "It has been a very good experience because we have acquired knowledge and skills to be able to identify pests such as whitefly , red spider mite

Tobacco aphid

Tobacco aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction is asexual [...] matt, never glossy. Winged individuals have a brown-black head and thorax and a reddish abdomen. There is a dark brown spot on the abdomen and several [...] Myzus persicae subsp. nicotianae ) is also encountered in a range of crops in greenhouses, such as sweet pepper, aubergine, chrysanthemum, and various pot

Mealybugs and scales

scales? Mealybugs (family Pseudococcidae), soft scales (family Coccidae) and armoured scales (family Diaspididae) form three important families within the s [...] Coccoidea are at first sight barely recognizable as insects. The females are wingless and immobile, and covered with a hard scale (armoured scales and soft scales) [...] ( Cladosporium spp.) are often found growing on this honeydew, which, as well as the white, waxy secretion of the mealybugs, reduces the ornamental value

Corn earworm

instars, over a total period of two to three weeks, developing a greyish colour and a black cephalic capsule in the first stage, but later adopting a variety [...] around 18 mm and have a slightly shiny brown colour. The adults have a brown-coloured body, with a wingspan of 35 to 40 mm and a dark stripe on the side [...] tomato. They primarily feed on flowers and fruit from the host plant, as well as on the corn of immature cobs and ears. Adults of corn earworm are nocturnal

Aphidius ervi

should be repeated weekly during the period when aphid infestation is expected. Consult a Koppert advisor or a recognized distributor of Koppert products [...] control with the parasitic wasp Aphidius ervi Aphidius ervi is a parasitic wasp species that plays a significant role in biological control of aphids . The natural [...] Koppert as Ervipar . Aphidius ervi products Ervipar Expand all items How to use Aphidius ervi The parasitic wasp Aphidius ervi is available in a bottle

Bacterial canker of tomato

General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional infection [...] disinfect tools and greenhouse structures Use a crop rotation in field crops of at least two years and alternate with a non-host crop Apply deep-ploughing to stimulate [...] entirely or, if the crop is old, only the plants in the infected area, with a substantial buffer zone. Replanting can only take place after thorough disinfection