• Root rot of carrot

  spot diseases. When carrots are stored during winter, diseases on the carrot roots can continue to develop during storage. Alternaria radicina , Alternaria [...] clearly visible. Under certain conditions, an olive-green mycelium can develop on the surface. Initially, the disease forms circular to irregular spots [...] subsurface parts turn dark brown to black, while the cotyledons remain green. During humid spells the surviving plants exhibit by necrotic leaf spots Life cycle

• Corn rootworm

  around in the soil, feeding on the maize roots. Their development lasts approximately one month, during which they pass through three larval instars. The pupa [...] the north. Maize is the only crop in which high population densities can develop, and consequently it is susceptible to serious damage. Adults may also be [...] the case of heavy infestations, significantly reduce the number of seeds. During the milk and dough stages of maturity, the adults may also feed on the kernels

• Beet armyworm

  resistance to nearly all insecticides, and its ability to develop on wild vegetation during the summer. It is highly polyphagous, feeding on plants of [...] exigua) feeds mainly at night and conceals itself during the day, although the youngest instars will feed during daytime. Full-grown caterpillars move to the [...] beet armyworm (Spodoptera exigua) is a small, nondescript moth, that hides during the day and is active only at night. The forewings are grey-brown suffused

• Artificially lit crops pollination advice

  based on latitude. Hive placement advice Snow during pollination How to pollinate during snow? During snowfall, orientation is seriously disturbed as [...] early daylight Provide shade for colonies during intense sunlight between 11:00 a.m. and 3:00 p.m., especially during autumn and early spring Ensure early daylight [...] -System (WBH). With the WBH-system, growers can enable bumblebees to fly during periods of adequate daylight. On average, bumblebees are allowed to fly

• How to protect bumblebees in cold

  When temperatures drop during the winter months, bumblebees face challenges in surviving the cold conditions to maintain their productivity. We understand [...] their own clever ways of regulating this temperature, either by ventilating during warmer temperatures or incubating the brood when it gets colder. Balancing [...] around the hive to incubate the brood. It's crucial to protect the brood during such conditions to avoid damage Keep in mind that the impact of climate

• Chrysoperla carnea

  On average a larva will consume 300-400 aphids of various sizes during its development, although the actual quantity depends on prey species and temperature [...] mainly active at night, sheltering under the plant or the rim of the pot, during daylight hours. The larvae grasp their prey from below and lift them in [...] are 2-10 mm long. They have large, forwardly projecting jaws and well-developed legs. The larva is colourless and transparent when newly hatched, later

• Pepper weevil

  they are already present on the crop, the best approach is to monitor them during the cooler parts of the day, as this is when they are most active. Another [...] holes where eggs are laid or adults were hatched. Meanwhile, the larvae develop in flower buds and young fruit, causing the stalk and calyx to turn yellow [...] hours after hatching. In total, the larva passes through three larval stages during which its only activity is feeding; the larval stage lasts around seven

• Pollination checklist Growing lights

  conditions. The maximum temperature should be max 28 °C. 17:00 16:00 14:00 During other weeks at higher than 28 °C temperatures you can place them lower in [...] greenhouse. 13:00 Vertical placement will have a negative effect on the development of the hives. 10:00 1! Bumblebees need max. 2 hours to return to their [...] preferably at least 4 hours per day 12:00 11:00 Monitor pollination closely during snowfall and introduce extra bumblebee hives if necessary or temporarily

• Open field pollination

  proves instrumental in promoting robust pollination and contributes to the development of more uniform and larger fruits and vegetables, ultimately leading to [...] range of temperatures, making them particularly effective pollinators even during cool and wet weather conditions when honeybees may exhibit reduced activity [...] The effective period for pollination and fruit set only lasts a few weeks. During this crucial time, efficient and active pollinators, such as bumblebees

• Chafers

  fly in the evening, generally in June and July and land on trees to mate. During the night the females move to the ground to lay their eggs. Eggs are shiny [...] with a yellow-brown head, and up to 30 mm long when fully grown. Larval development takes two years, fully fed larvae pupate in an earthen cell and the adult