• Buckthorn-potato aphid

  nasturtii , has a nearly cosmopolitan distribution and is a major pest of potatoes, where it also transmits viruses. It also attacks a large number of [...] major problem in potatoes is the transmission of viruses. Life cycle and appearance of Buckthorn-potato aphid Aphids have a complex life cycle, with both [...] worldwide distribution. Damage symptoms Direct damage, caused by sucking of sap is rarely seen. Sometimes, large populations build up on potatoes or other hosts

• Pollination checklist Growing lights

  (overlap with daylight) there is for the bumblebees to pollinate. For pollination, bumblebees need at least 28 Watt/m2 PAR light near the hive and the presence [...] the bumblebees to fly when there is enough daylight present. Wireless BeeHome system (WBH) can be controlled either by using a timer or by connecting the [...] will have a negative effect on the development of the hives. 10:00 1! Bumblebees need max. 2 hours to return to their hive 15:00 Do not keep a hive closed

• Broad mite

  brown stripes forming a fine network on the leaves. In case of a more serious infestation, this network becomes so dense that there is no more green tissue [...] growth. Leaf feeding is mainly concentrated on the underside near the leaf stalk, which tends to cause the leaf to turn brown and curl up. A typical indication [...] latus) are not a serious problem, as they are unable to overwinter. Mites belonging to the family of tarsonemids ( Tarsonemidae ) display a greater diversity

• Pepino mosaic virus

  use of cross-protection with a mild strain, such as V10 . What is V10? V10 is a mild strain of Pepino Mosaic Virus used in a controlled way to protect plants [...] moderate protection against PepMV US1. This approach is based on the principle of cross-protection, where: A mild virus strain occupies the plant It prevents [...] What is Pepino Mosaic Virus (PepMV)? Pepino Mosaic Virus (PepMV) is one of the most economically significant viral diseases in greenhouse tomato production

• Municipality Venray: biological control of oak processionary caterpillars

  ty 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 a curative measure [...] locations in outlying areas where there might be protected species of butterfly and moth. The major benefit of Entonem is that nematodes kill fewer other [...] biodiversity. This is something that is high up on the political agenda, as well as being an important social issue.’ Entonem makes a big difference According

• Municipality Enschede: Entonem nematodes against oak processionary caterpillar

  product Entonem in locations where we find a range of unusual butterflies and moths. As we only do this at an early stage, there is no secondary effect on other [...] 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 the [...] the nests. But as Petra Klein Breukink explains, it was not enough. She is the project manager of the oak processionary caterpillar for the Municipality

• Sustainable cultivation goes much further than pests and natural enemies

  December 18, 2018

  butterflies... and while there is nothing wrong with that image, it is definitely a romanticized version of reality. Ultimately, progress is made by following [...] relies on mineral oil. ‘And we all know that mineral oil is a finite natural resource and that there are already restraints on its use due partly to the CO2 [...] used in the research is becoming ever cheaper. ‘Take the genome, for example. Around ten to fifteen years ago, performing a read-out of a genome was extremely

• Optimal placement of bumblebee hives

  System is closed. In times of high temperatures, protect your bumblebees from heat . Low light condition (Winter) In winter, choose a spot where the hives [...] it is crucial to position the hives in visible locations, enabling easy identification and access for both parties. For optimal visibility, it is recommended [...] recommended to place the colonies near pathways, preferably within a distance of 2 meters. During the winter, sufficient light should reach the hives, while

• Large raspberry aphid

  major problem is the spreading of various raspberry viruses by the aphids. Life cycle and appearance of Large raspberry aphid Aphids have a complex life [...] legs and siphunculi. The cauda is short and triangular. Overwintering eggs of the large raspberry aphid are laid near the base of vegetative canes and [...] General The large raspberry aphid, Amphorophora idaei, is the most important aphid species found on raspberries in Europe. It only feeds on raspberry.

• Horiver Rollertrap

  easily. Application Place Rollertraps in areas where high pest pressure is expected, such as along gables, near ventilation windows and at (other) places with [...] to provide additional support. It is recommended to replace the Rollertrap after 10 months, or earlier if the surface is largely covered by insects and/or [...] crop is still low, just before or after planting. Storage time See Best before date. Storage temperature 0-32°C/32-104°F. Storage conditions In a cool