• In control of aphids and thrips: Koppert showcases biological crop protection solutions at Bejo Open Days 2025

  August 28, 2025

  onion and cabbage Hotter summers are increasing thrips pressure in leek, onion, and cabbage. At the same time, the range of available chemical insecticides [...] great alternative to control thrips in your crop. At the extensive demofield at the Bejo Open Days we are happy to showcase this effective solution. Effective [...] over 1,200 species worldwide, many are common crop pests. The two-spotted spider mite , Tetranychus urticae , is by far the most important species in many

• Bacterial wilt, brown rot

  signs of wilting during the day which may disappear in the early stages of infection. Under conditions favourable for the bacteria, the whole plant will [...] s roots on the stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish [...] solanacearum are wilting and yellowing of leaves and stunted plants. Inside, vascular browning is common with bacterial slime oozing from the cut. When the bacteria

• Aphidius colemani

  typical of the Aphidiidae. First the host is examined by drumming with the antennae. This gives the wasp the information about whether the aphid is the right [...] behaviour, which enables the wasps to track down and parasitize aphids , even when they are at low density. The behaviour of the female during egg-laying is typical [...] of the aphid population by the presence of the parasitic wasp also has an effect: the alarmed aphids secrete a warning substance, which affects the entire

• Capirel

  ) Mode of action The nematodes enter the pest and release symbiotic bacteria into the pest's body cavity. These bacteria convert the host tissue into a [...] reproduce inside the host. This kills the pest within a few hours to days after infection. Visual effect Infected pest insects in the root zone turn yellow [...] Nematodes Preparation Remove the sachets from the box and keep them at room temperature for 30 minutes Empty the contents of the sachets into a bucket containing

• California red scale

  day. The crawlers are mobile and very small, so they are spread easily by the wind and birds, as well as by humans and their tools. In the hours after [...] t. The females moult into the grey stage, named after the colour of the edges of their shield. Mating occurs at the start of this stage, before the female [...] tissue and sucking the contents of the parenchymal cells. If the infestation is more serious, the leaves present some characteristic yellow dots around

• Mirical-N

  of action The predatory bugs actively search for prey. With their piercing mouthparts, they extract the contents of their prey, leaving the empty skin [...] directly in the hotspots on leaves or in Diboxes Spread material thinly (maximum 1 cm thick) to enable the predatory bugs to get out of the carrier material [...] material Make sure the material is not disturbed for at least a few hours after application Dosage The dosage of Mirical-N depends on climate, crop and pest

• Chrysopa

  Chrysoperla carnea is active mainly during the night. The larvae hide during the day. Pack size 1,000; 10,000 larvae. Presentation 500 ml bottle; 6 litre [...] Start introduction as soon as the first pests are detected in the crop. Introduction rates typically range from 2-20 per m 2 /release. Releases should be [...] of action Larvae of the lacewing attack their prey and suck their body fluids. Visual effect Prey is sucked out, shrivelled skins are difficult to find.

• Roots Growers positive about Mycotal against whitefly

  on the market. Instead of conidia, we use blastospores from the fungus Akanthomyces muscarius Ve6 in Mycotal. Blastospores are the spores that are usually [...] there, so the level of infestation is higher and whitefly levels are high earlier in the year. We could theoretically spray everything in the greenhouse [...] notice that the whitefly’s development cycle had clearly been inhibited in the spots treated with Mycotal. We used the same dosage of Enermix in the three test

• Spidex

  shake the bottle gently before use Push the centre of the cap to open the dosage hole Sprinkle material on leaves or pour into Diboxes Make sure the material [...] Start introduction as soon as the first pest mites are detected in the crop. Introduction rates typically range from 2-50 per m2/release. Releases should [...] material remains on the introduction site for at least a few hours after introduction Can also be applied with Natutec Airobreez , Natutec Mini-Airbug , Natutec

• Bumblebees – Keep them cool this summer!

  June 27, 2019

  out for the maximum number of pollination hours, and it positively influences the lifespan of a colony. It can make the difference between just enough pollination [...] ‘The need to keep your busy pollinators cool increases. Keeping an eye on the temperature in the greenhouse is more important than ever for your bumblebees [...] in the hive by 5 to 15°C. See for the best practice advice this short Koppert video clip . ‘A stable hive temperature ensures that bumblebees are out