• Oak processionary moth

  reducing the viability of oak trees. However, this is usually less of a problem as the trees normally recover from this. More important is the health risk [...] thousands of very small, barbed urticating hairs (ca. 0.1 mm). These hairs contain an allergenic protein, thaumetopoein; which can be actively released in the [...] . In dry weather, these urticating hairs can remain allergenic for months. From the 5th instar on, the larvae start building silken nests at the base of

• Anso-Mite

  planting of the crop. Introduction rates typically range from 50-250 per m 2 /release. Releases should be repeated at least 3 times at weekly intervals [...] Amblyseius andersoni is effective at temperatures above 14°C/57°F. Optimum temperatures are between 20 and 28°C (68 and 82°F). A. andersoni is sensitive to relative [...] taking the necessary precautions. Precautionary measures Storage time after receipt Apply as soon as possible after receipt. If necessary, the product

• Rophoria

  preventatively, or as soon as the first aphids are detected in the crop. Introduction rates typically range from 200-600 pupae per ha/release. Releases [...] and/or parasitoids. Storage time after receipt Apply as soon as possible after receipt. If necessary, the product can be stored for 1-2 days Storage t [...] feeding on the aphids . Visual effect Aphids are consumed entirely, only skins remain. Dark excrements (meconium) on the leaves is an indicator of hoverfly

• Aphidius colemani

  Myzus nicotianae ) The natural enemy Aphidius colemani is available at Koppert as Aphipar . Aphidius colemani products Aphipar Expand all items How to use [...] deposit an egg in an aphid in which four larval instars subsequently develop. Once larval development is complete the larva spins a cocoon inside the aphid [...] abdomen that is shorter than the wings, and is black with dark brown legs. A female has a more pointed abdomen that is as long as the wings, is equipped with

• Aphidoletes aphidimyza

  aphidimyza is most effective between 20 and 30°C (68 and 86°F), effectivity decreases significantly at higher temperatures. As gall-midges are active at night [...] to the particular situation. Start introduction as soon as the first aphids are detected in the crop. Introduction rates typically range from 1-10 per [...] aphidimyza when using it as a biocontrol product by observing distinct physical characteristics at each stage. Here's how growers can identify the different life

• Pollination checklist tomato

  level is at temperatures between 8 and 28 degrees Celsius. At temperatures between 28 and 32 degrees Celsius, their activity level gradually drops. At higher [...] best at a relative humidity (RH) of between 50% and 80%. A relative humidity of more than 80%-85% will result in pollen not being released and the bumblebees [...] n , a bumblebee bites onto the flower and makes the flower vibrate. This is known as buzz pollination. The imprints of the bumblebee's jaw on the flower

• Syrphidend

  preventatively or as soon as the first aphids are detected in the crop. Introduction rates typically range from 100-600 pupae per ha/release. Releases [...] and/or parasitoids. Storage time after receipt Apply as soon as possible after receipt. If necessary, the product can be stored for 1-2 days. Storage [...] feeding on the aphids . Visual effect Aphids are consumed entirely, only skin remains. Dark excrements (meconium) on the leaves is an indicator of hoverfly

• Spidex Vital lives up to its promises

  critical and tense moment on cucumber farms like mine. And as spider mites can cause real problems in this type of crop, an even better beneficial is always [...] Feltiella, and Swirskii. Together, they create an effective mix. You can see them soon after they have been released and they get right down to doing their job [...] job.’ A tense moment Sjaak van Dijk switched over to Spidex Vital at the start of February. ‘I have three crops a year,’ he tells us five weeks later. ‘As

• Treatment of bumblebee stings and allergies

  minimize the local reaction, in particular if the person was stung in a sensitive location, such as near the eyes. As soon as possible after being stung, [...] prescription for an adrenaline auto-injector (such as an EpiPen or Jext) from your doctor. This can be carried with you and is used to inject epinephrine into the [...] This information is intended as an education resource only and should not be used for diagnosing or treating a health problem as it is not a substitute for

• Powdery mildew

  germination. In general, the development rate of the epidemic is fastest at 18-25 °C. High relative humidity (RH) promotes germination of spores but inhibits [...] General Powdery mildew is a fungal disease that is caused by many different species of fungi such as Erysiphe, Podosphaera, Oïdium, Leveillula. Damage [...] plant cells and barely survive in the absence of a living crop. They survive as ascospores or perithecia, structures containing ascospores. Ascospores have