• Boisduval scale

  orchids, this scale tends to prefer the leaf midrib and the portion of the petiole that is covered by the sheath. Small infestations on orchids cause extensive [...] under the scale and become crawlers. The crawlers move out to look for a suitable place to feed and become sessile usually after a few hours The development [...] of Diaspi s are very similar in their appearance and damage symptoms. Here, the Boisduval scale is described in more detail, as it is the most important

• Diglyphus isaea

  Adult stage: The appearance of the adult is already clearly visible. Pupae are often visible through the leaf. The parasitic wasp escapes from the mine by making [...] Liriomyza trifolii ). The female wasp deposits her eggs inside the larvae of the leafminer, where the emerging larvae feed on the host’s internal tissues [...] body, and the third larval instar is blue-green. The full-grown larva usually pupates in the mine some distance from the dead host. Pupal stage: The pupa lies

• IPM Essen 2026

  based on the entomopathogenic fungus Akanthomyces muscarius , has been further optimized. Thanks to improvements in the production process, the new generation [...] growers can rely on the best biological protection. Launch of Limonica Ulti-Mite: the ultimate thrips fighter In addition to Mycotal, we are presenting Limonica [...] Koppert presents innovations against whitefly and thrips at IPM Essen During the world’s leading trade fair for horticulture, IPM Essen, from January 27-30

• Root rot of carrot

  lesions of various shapes. The lesions can merge and eventually cover the entire surface of the carrot. The affected areas are firm, shallow, and clearly [...] at the generic level. Årsvoll was the first to identify and describe the fungus in Norway, in 1965. An infection can occur through the soil and the air [...] black spot diseases. When carrots are stored during winter, diseases on the carrot roots can continue to develop during storage. Alternaria radicina , Alternaria

• Beet armyworm

  es for the growth of the crop. With a substantial population of caterpillars, the damage can spread to the stems, and in the worst cases to the fruit. [...] feed mainly on the growing tips. They produce large holes in the leaf, sometimes stripping the leaf down to the mid-rib. Flowers and buds are also attacked [...] armyworm The beet armyworm (Spodoptera exigua) is a small, nondescript moth, that hides during the day and is active only at night. The forewings are grey-brown

• Koppert presents new edition of book Knowing & Recognizing

  October 23, 2017

  platform for the biocontrol industry, the ABIM was chosen as the perfect time and place to introduce the new edition to professionals in the industry. ‘Knowing [...] photographs of the most prevalent pests, diseases and their natural solutions. Knowledge company The book was launched to coincide with the company’s jubilee [...] will help the company to project this aspect of our work.' The first edition of ‘Knowing and recognizing’ was published 25 years ago, with the last update

• Insect Science becomes Koppert's preferred supplier for semiochemicals

  August 6, 2025

  collaboration and innovation The agreement follows more than a year of close collaboration between the two companies. What began with a Memorandum of U [...] Science, naming the company as its preferred supplier of semiochemical solutions. This collaboration marks a significant step forward in the development of [...] sustainable pest management tools for farmers worldwide. The agreement was signed on 19 June 2025 in the Netherlands by Martin Koppert, Chief Business Officer

• ‘Nature is key to solving agricultural dilemmas’

  August 29, 2023

  rand grandson of the founder of the agricultural biocontrol giant Koppert, shares the company’s plan for Brazil. In the late 1960s, when the way of cultivating [...] practices that are both safe and environmentally responsible. What is the main global challenge in achieving 100% sustainable agriculture? At the heart of our [...] pesticides were no longer effective, but the results achieved with the use of natural enemies were promising. With the support of his son Peter Koppert, Jan

• Leaf stripe

  first occur on the first, second and third leaf and subsequently on other leaves. Yellow stripes are formed at the base of the leaf and the leaf sheath. [...] disease cycle during the cropping season. The fungus is seed-borne and this systemic infection is the only source of primary infection. The fungus spreads [...] and chlorotic and may merge. Eventually this leads to the death of the leaf. The leaf splits at the end which makes it look shredded. This is typical for

• Fusarium wilt

  oxysporum is the only Fusarium that actually grows inside the vessel system of the host plant and spreads upwards inside the plants. The other species are dispersed [...] symptoms are brown discolouration of the xylem vessels which can be seen when the stems are cut. In banana, whole plantations may die and the soil may [...] Fusarium oxysporum is the species causing vascular wilt. First the leaves turn yellow and wilt, mostly on one side of the plant. Finally, the whole plant wilts