• Two-spotted spider mite control in hardy nursery stock grown in polytunnels

  July 20, 2021

  of a diverse range of plants often leads to a much wider range of pests that require a mix of ICM solutions to keep pests below population thresholds at [...] which plants are prone to TSSM damage, and physically placing them in the same area on the nursery, makes spider mite control easier to implement. It ensures [...] from tall to prostrate, with open or tightly closed canopies, and with and without leaf hairs. “For the protection of tall open canopies we like to use the

• Lyprauta

  roots. Especially the root tips are affected. They become black and start to rot internally. Just above the damaged area, the roots produce large numbers [...] have a long slender body. The head is brown or reddish. The pupae are white to yellow and embedded in a dense web. Adult flies are long and slender and have

• New Strain Of Green Peach Aphid, Myzus Persicae, Requires More Aggressive Beneficial Insects

  September 1, 2023

  parasitoids to establish in the crop, but can be good addition to the system. At the same time, we are looking at the side-effects of pesticides and how they [...] greenhouses. Koppert have responded to this developing crisis felt among growers by dedicating focused research to the biology of the pest and diagnosing [...] By Koppert Sweet pepper growers within the UK, and worldwide, are battling to control a new strain of the green peach aphid , Myzus persicae , that presents

• Rose aphid

  aphids. In summer, winged aphids spread the infestation to other rose plants and sometimes also to secondary hosts. Colonies are often present on rose bushes [...] place by parthenogenesis, with unfertilized viviparous females continuing to produce new generations of females. Aphids moult four times before reaching [...] Wingless females of the rose aphid are 1.7-3.6 mm long and green or deep pink to red-brown. The antennae and sometimes the head is dark in colour. The siphunculi

• Pepper weevil

  monitored, given their ability to cause huge damage. When they are already present on the crop, the best approach is to monitor them during the cooler [...] Another recommendation is to inspect the ground as well as the flowers and immature fruit, since they throw themselves to the ground and keep still when [...] flower bud, they feed on immature pollen. In both cases, they begin to feed one to four hours after hatching. In total, the larva passes through three

• A legacy of sustainability: Stolk Brothers and Koppert’s shared vision

  March 17, 2025

  family’s dedication to innovation and sustainable practices led them through various crops—from lettuce to tomatoes, and eventually to their current specialty: [...] Brothers continues to feel the company’s personal touch. “Fifteen, twenty years ago, you could just call someone at Koppert and get a sample to try out. Things [...] core, predatory mites are our go-to solution,” says Pieter. Initially, biological control was used reactively—similar to chemical treatments—only applying

• Caterpillars

  plant tissue. Many species cause damage to crops. The most harmful caterpillars that occur in greenhouses belong to the Noctuidae (the noctuid or owl moths) [...] name ‘leafroller’ refers to the fact that the caterpillars often live in rolled-up leaves. Although some species are restricted to a single crop, most are [...] or bore holes into fruit or stems, making them difficult to detect and control. In addition to consumption of the plant, caterpillars also spoil the plant

• Airobug – “the aerial application system”

  January 6, 2021

  practical. This was due to the new design and installation of the raised benches in the blocks”. “We have found the Airobug is able to distribute the beneficial [...] reliable and efficient system for the application of biological control products to our crops. We have used Koppert natural enemies for a number of years at our [...] labour costs. Koppert engineers visited the site and tailor-made the Airobug to meet our facility’s specifications. The engineers were very supportive throughout

• Blackcurrant aphid

  place by parthenogenesis, with unfertilized viviparous females continuing to produce new generations of females. Aphids moult four times before reaching [...] currant plants. It does not induce a gall on blackcurrant. In June, it migrates to hemp nettle and other Lamiaceae where it curls and rolls the young leaves

• Shallot aphid

  place by parthenogenesis, with unfertilized viviparous females continuing to produce new generations of females. Aphids moult four times before reaching [...] females of the shallot aphid are 1.1-2.2 mm long and shiny brownish green to dirty yellow. Their legs and antennae are pale, apart from the ends of the [...] are short an swollen towards the apex. The shallot aphid does not alternate to another host plant for overwintering and there is no sexual stage in the life