Ervibank

provide alternative hosts for Aphidius ervi and Aphelinus abdominalis to build up the population when aphids in the crop are scarce. Natural enemies Use Ervibank [...] situation. Environmental conditions Ervibank is effective at temperatures up to approximately 30°C/86°F. Side Effects Aphids on banker plants are extremely

Downy mildew of Cucurbits

pathogens produce haustoria, small organs with which the pathogen can take up nutrients from the living plant cells. The pathogens continue to grow inside

Chafers

The larvae are white-coloured, C-shaped grubs, with a yellow-brown head, and up to 30 mm long when fully grown. Larval development takes two years, fully

Olive scale

Damage symptoms Olive scales produce large amounts of honeydew causing build-up of sticky deposits on nearby surfaces. The honeydew may attract attendant

Open field pollination

temperatures and low light intensities. Bumblebees visit up to two times more flowers and transfer up to 2,7 times more pollen than honeybees to give growers

Municipality Enschede: Entonem nematodes against oak processionary caterpillar

the spread of the oak processionary caterpillar . The municipality’s built-up area has a total of 22,000 oak trees. In the past, the municipality only extracted

Hemispherical scale

close to the midribs. They produce large amounts of honeydew causing build-up of sticky deposits on nearby surfaces. The honeydew may attract attendant

Leaf stripe

wind-dispersed to neighbouring ears where they can infect seeds at any stage up until soft dough stage. Infection occurs between 10 and 33 °C. Infected seeds

Municipality Venray: biological control of oak processionary caterpillars

means they are less harmful to biodiversity. This is something that is high up on the political agenda, as well as being an important social issue.’ Entonem

Rose aphid

continue to reproduce parthenogenetically. Large colonies of aphids can build up on roses in spring and summer; sometimes shoots are completely covered by