• Thripex-Plus

  avoid damaging the predatory mites Dosage The dosage of Thripex-Plus depends on climate, crop and pest density and should always be adjusted to the particular [...] Koppert advisor or a recognised distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions Neoseiulus [...] as possible after receipt. If necessary, the product can be stored for 1-2 days. Storage temperature 10-15°C/50-59°F. Storage conditions In the dark, provide

• May beetle

  the impact of this pest increases. Damage symptoms Initial damage is not visible in the aerial parts of the plant, as the larvae only feed on root hairs and [...] abdominal segment is needed, although this is not a method which works for all species. They can best be identified based on examination of the male genitalia [...] and are plant-eating species from the Melolonthinae subfamily. Although this subfamily contains a number of species which cause damage to crops, the most

• Getting a head start - The importance of scouting in winter

  January 31, 2025

  agents at the right time, enhancing their impact on pest populations and preventing pest outbreaks. This in turn ultimately saves costs and safeguards yield [...] t changes as the seasons shift from winter to early spring. For growers, this transition is not just about preparing for planting; it is also a critical [...] leading to potential outbreaks if not monitored closely. Scouting during this period allows growers to identify pest populations before they reach damaging

• Crazy roots, hairy roots, crown gall

  galls on the stems, which are first white and later turn brown. Only Rhizobium radiobacter causes galls and tumours on underground plant parts and on the [...] humans and tools. Until now, no bacteria have been isolated from crazy roots. This disease seems to be caused by a change in the hormonal system of the plant

• Damping-off

  or graft on tolerant cultivars Use clean planting material Ensure regular growth Avoid over-watering Do not provide excess nitrogen since this promotes [...] fall off. The side roots rot and very little of the root system survives. On the border between air and soil or substrate the plant turns brown. A typical [...] where the side roots are formed or through other similarly damaged spots. On the infected plant, new sporangia with zoospores are formed, that allow the

• Ercal

  cards at places exposed to direct sunlight Dosage The dosage of Ercal depends on climate, crop and whitefly density and should always be adjusted to the particular [...] least 3 times at weekly intervals or until control is achieved. Depending on the specific situation, it may be better to switch to the use of En-strip [...] Koppert advisor or a recognised distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions For optimal

• Pea leaf miner

  across the world. This species can be particularly damaging to leaf vegetables and causes problems especially in lettuce grown on open ground. Damage [...] the ground. This occurs in the early morning. The larva crawls into the ground to pupate. A small percentage of the larvae remain hanging on the leaf and [...] and pupate there, sometimes on the upper surface but more commonly on the underside. The late third instar larva, that emerges from its tunnel just prior

• Privacy Statement

  to our web server. This data helps us to provide the right information on the site for you. We collect the following data for this purpose: IP address [...] where such third parties process the information on Google’s behalf. Koppert has no influence on this. Profiling We use specialist external software to [...] specific request. In addition, some of this data is linked to your search and click behaviour on the site. By collecting this information, we can distinguish

• Spical Ulti-Mite

  damaging the predatory mites Dosage The dosage of Spical Ulti-Mite depends on climate, crop and pest density and should always be adjusted to the particular [...] Koppert advisor or a recognised distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions Neoseiulus [...] as possible after receipt. If necessary, the product can be stored for 1-2 days. Storage temperature 12-14°C/54-57°F. Storage conditions In the dark, provide

• Pear psylla

  longitudinal stripes and blackish markings on the head and body. Pear psyllas overwinter as adults, sheltering on the bark of pear trees. The adults become [...] There are 5 nymphal instars which feed on twigs and shoots. Depending on the temperature, there are 3 or more generations per year. Overwintering adults [...] buds. Pear psyllas excrete large amounts of honeydew. Sooty moulds often grow on the honeydew covering shoots, leaves and developing fruits with a sticky black