• Cottony soft rot

  January 1, 1970

  mycelium is produced by the germinating sclerotia. The fungus grows quite rapidly inside the plant and kills the host cells. On the infected plant tissue [...] (fruiting bodies) containing ascospores. The mycelium infects the stem base and the roots, whereas the ascospores infect the above-ground plant parts. In greenhouses [...] grows on the lesions, giving this disease its name cottony soft rot. In the mycelium, big, dark sclerotia are formed. They can easily be seen with the naked

• Early blight

  January 1, 1970

  lesions on stem and foot. On fruits, dark sunken, leathery lesions occur at the side of the stem. Life cycle and appearance of Early blight From the primary [...] General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause [...] spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant

• Fusarium head blight or scab

  January 1, 1970

  density. The foot of the plant is infected, either because the seedling was infected or by direct infection of the foot by overwintering inoculum. On the infected [...] possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place as infection of the roots at the root tip [...] spread the disease. Gibberella zeae (Fusarium graminearum ) primarily infects the older, lower leaves. The spores are dispersed upwards to the ears by

• Blueberry aphid

  January 1, 1970

  white skin, betraying their presence in the crop. Wingless females of the blueberry aphid are pale yellow-green. The siphunculi are long and straight. Blueberry [...] Blueberry aphids overwinter as eggs on blueberry bushes. The fundatrices (founding mothers) emerging from the eggs produce wingless and winged parthenogenic [...] adults are produced in September and October and the sexual females lay eggs on blueberry bushes for overwintering.

• Municipality Venray: biological control of oak processionary caterpillars

  January 1, 1970

  those places, which means that the nematodes are more easily blown away. In some cases, we have to take curative action and extract the nests. But, on balance [...] In the Municipality of Venray a third of the tree stock in the area, some 11,000 trees, is oak. ‘We’ve been using Koppert’s nematode product Entonem as [...] against the oak processionary caterpillar for several years,’ explains Joep van Bergeijk, coordinator of oak processionary caterpillar management for the

• Natutec Airobug

  January 1, 1970

  Adjust the dosing pots to the correct settings making use of the information provided in the table on the underside of the dosing pots Fill the dosing [...] with the material to be released and close the lid Attach the dosing pots to the Airobug Turn on the switch of the Airobug to start releasing the material [...] metres (5 metres on both sides). Application Place the Airobug in the right start position on the mono-rail or pipe-rail Make sure the battery is fully

• Aphilin

  January 1, 1970

  mummy. The adult parasitic wasp emerges through a hole at the rear of the mummy. The first mummies are noticed in the crop around 2 weeks after the first [...] products for advice on the best strategy for your situation. Environmental conditions Effective between 15 and 35°C (59 and 95°F). Better than the Aphidius [...] material on rock wool slabs or in application boxes (Dibox) Make sure the material remains dry and at its introduction site for a few days Dosage The dosage

• Aphidend

  January 1, 1970

  n Open the bottle in the greenhouse Place the bottle directly on the soil or rockwool slabs or hang it in-between the plants Do not scatter the contents [...] gall midges emerge from the pupae and deposit their eggs in the aphid colonies. After emerging from the eggs the larvae consume the aphids . Visual effect [...] contents Once emerged, the adult gall-midges will leave the bottle and spread Dosage The dosage of Aphidend depends on climate, crop and aphid density and should

• Citripar

  January 1, 1970

  hole in the sticker on the lid. Use the label to hang the tube in the crop following the instructions on the label itself. Hang the tube on a place out of [...] recognised distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions The parasitic wasps are most effective [...] develop in the mummified skin of the host and look like swollen mealybug larvae. Empty pupae have an irregular exit hole at the posterior end of the mummy after

• Manual Growing lights

  January 1, 1970

  own hive. The big frames for 12 hives are positioned above the walkway. The smaller frames for 4 hives are placed close to the sidewalls, at the end of the [...] lights, we advise to place the hives high in the greenhouse (above the crop) – especially from week 40 until week 9 (depending on the amount of daylight [...] daylight that is available). In the weeks 10 until 39, you can place the hives lower in the greenhouse, along the walkway under the gutter (according to Koppert’s