• Glume blotch

  glumes. In the centre of the lesions, light-coloured translucent pycnidia (fruiting bodies) with new spores occur. The lesions may merge, turning the whole [...] conidia on the oldest leaves, but seed transmission is also possible. The germ tubes can infect the leaves of the plants directly or through stomata. The lesions [...] seven days. On the lesions, new pycnidia are formed. The conidia that are produced in these pycnidia emerge in a pink slimy substance. The conidia are released

• Loose smut of barley

  survives inside the seed and when the seed germinates, the mycelium of the fungus grows upwards inside the plant into the growing tip and the seed primordia. It [...] smut of barley The seeds are infected during flowering and the infected seeds are the primary source of inoculum in the next crop. The fungus survives [...] invisible until head emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains a mass of olive-brown

• Predatory mite pioneers: A journey of biocontrol innovations

  October 21, 2024

  “part of the company furniture,” as he puts it. Originally from Belgium, Peter arrived at the Koppert headquarters in the Netherlands in 2001. “In 1967, our [...] response. “We were the first and remain the only company to offer an alternative to paper sachets for the application of predatory mites in challenging climates [...] breakthrough by being the first to use predatory mites to control pests," says Peter. “In 2006, I was part of another pivotal moment in our history when we

• Pierce's disease of grapevine

  along the margin or the tip from early to midsummer. The necrotic area spreads over the leaf from the margin and is marked by a chlorotic band. In the beginning [...] plant species: in peach, bacteria are found in high numbers in the roots, whereas in plum, high numbers are found in leaves and fruits. The bacteria are [...] peach trees with the bacteria mainly in the roots is much more successful than the other way around. In general, the low number of bacteria in peach leaves

• Loose smut of wheat

  survives inside the seed and when the seed germinates, the mycelium of the fungus grows upwards inside the plant into the growing tip and the seed primordia. It [...] Loose smut of wheat The seeds are infected during flowering and the infected seeds are the primary source of inoculum in the next crop. The fungus survives [...] invisible until head emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains a mass of olive-brown

• 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 [...] one side of the plant. Finally, the whole plant wilts. Other symptoms are brown discolouration of the xylem vessels which can be seen when the stems are [...] takes place as infection of the roots at the root tip or in small wounds, for example where lateral roots branch off from the tap root. How to prevent Fusarium

• Root and crown rot of strawberry

  diseases in strawberry have been ascribed to Pestalotiopsis clavispora in the case of root and crown rot (of strawberry), first found in The Netherlands [...] longisetula in the case of leaf spots, such as leaf spot of strawberry and fruit rot reported mainly from Brazil. The genus is quite complex, so the taxonomy [...] strawberry Not much is known about the life cycle. The fungus produces ascospores and conidia, but their role in the epidemic has not yet been established

• Fusarium spp.

  This species is the only Fusarium that actually grows inside the vascular system of the host plant and spreads upwards inside the plants. The other species [...] infection of the roots at the root tip, or in small wounds, for example where lateral roots branch off the tap root. F. oxysporum grows inside the roots towards [...] towards the foot of the plant and enters the vascular system. Inside the vessels, the fungus produces mycelium and many spores (microconidia), which are

• Hunting season starts early with Anso-Mite

  February 18, 2021

  adds strength to the thrips management strategy. The Koppert A. andersoni strain has been tested in several field experiments in the Netherlands and Spain [...] Anso-Mite comes in to fill the gap early in the growing season.’ Natural range and crop Anso-Mite is a naturally-occurring species in many countries and [...] of Amblyseius andersoni in nursery stock projects in the Netherlands several years ago where he found it had overwintered in the mild Dutch winter. ‘I conducted

• Following Swirski, Spical undergoes revolutionary upgrade

  November 26, 2018

  With the release of Swirski Ulti-Mite , Koppert placed a revolutionary update of the successful predatory mite Amblyseius swirskii on the market. The company [...] it lasts longer. The predatory mite can find the best possible conditions inside the sachet resulting in a better developed population to control spider [...] protection . ‘As it increases the robustness of the system, Spical Ulti-Mite can yield even greater results in these places in particular.’ Thanks to its