• Bacterial wilt, brown rot

  solanacearum is a quarantine organism in Europe and considered a bioterrorist organism in the United States. It is a commonly found soil-inhabitant in tropical [...] solanacearum is a plant pathogenic bacterium. It is a soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot in a very wide range [...] 35-37 °C, the optimum for Race 3 is 27 °C, which makes it more dangerous in temperate regions. It survives well in water and in many different soil types and

• Partners with Nature

  April 5, 2016

  and in the process sustain a happy population and planet. By means of a holistic approach -combining knowledge, advice, and solutions - Koppert is playing [...] sustainability of our planet. In cultivation, vital and resilient ecosystems form the basis for healthy crops. A healthy plant has a better defence system against [...] diseases, this can translate to a dramatic reduction in the use of fertilisers and pesticides, and more importantly, more yields of a better quality. Koppert

• Spidex

  Releases should be repeated once or twice at weekly intervals. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best [...] persimilis is most effective at temperatures between 13 and 27°C (55 and 81°F) and not effective above 30°C/86°F. Phytoseiulus persimilis is sensitive to [...] Diboxes Make sure the material remains on the introduction site for at least a few hours after introduction Can also be applied with Natutec Airobreez, Natutec

• Celebrating our 10th Anniversary!

  October 16, 2016

  existence, join us for a brief tour of the company’s history. From humble beginnings The world has changed a lot in the past 10 years. In 2006 when we first [...] complications associated with such a system. Under these circumstances, by sheer tenacity of purpose and a firm belief in the quality of Koppert products [...] resilient growing. This has paid off in the form of trust and a strong reputation within the horticulture industry. A sustainable system From the start,

• Angular leaf spot

  overwinters in plants and dead leaves, that become the primary source of infection in the spring. The bacteria are also introduced in a crop in new transplants [...] . This bacterium is very resistant to desiccation and can survive well in dry leaves or leaves in the soil, but not independantly in the soil. Under humid [...] General Xanthomonas fragariae is a leaf spot disease found in strawberry. Damage symptoms Xanthomonas fragariae initially causes small, water-soaked lesions

• Entomite-M

  has to be moist, rich in organic matter and have a loose structure. The minimum temperature for successful use of Entomite-M is 15°C/59°F. Combined use [...] insects. The mites appear in and on the soil and at the base of plant stems. The reduction of the infestation level occurs at a slow but steady rate. Pack [...] detected in the crop. Introduction rates typically range from 100-500 per m 2 /release. Releases should be repeated once or twice, or until control is achieved

• Damping-off

  General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] aphanidermatum mostly occurs in young plants and damage is more extensive in young crops. Damage symptoms Pythium affects roots, in particular those of seedlings [...] substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. Life cycle

• Phytophthora blight

  higher water content than is optimal for crop growth. Phytophthora overwinters in roots, infected tubers and bulbs or in the soil in different stages: as oospores [...] or by zoospores produced in the sporangia. For germination on above-ground plant parts, leaf wetness is required. Dispersal is by wind and rain causes the [...] borders and white fluffy fungal growth on the leaves. The centre is grey-brown with a light-green edge. On the stem, elongated brown lesions occur, usually

• Early blight

  General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause [...] and at a relative humidity (RH) of over 90% or when the leaves are wet. Small differences in optimum temperature occur between species, but in general [...] st storage at 0-1 o C. A. brassicae and A. brassicicola : adjust the sowing date to avoid conditions conducive to infection. In greenhouses: avoid high

• Cottony soft rot

  as cottony soft root, is a plant pathogenic fungus. It has a very wide range of host plants. Damage symptoms The first symptoms of a cottony soft root ( [...] Sclerotinia sclerotiorum ) overwinters as sclerotia and mycelium in dead and living plant material in or on the ground. Sclerotia germinate at temperatures between [...] whereas the ascospores infect the above-ground plant parts. In greenhouses, usually only mycelium is produced by the germinating sclerotia. The fungus grows