• Spidex Vital Trial Results

  January 1, 1970

  Spidex females and conformed to the standard used in the industry for 5 days in a row. Results: The graph below shows the results of the collected data [...] mites (nymphs and/or adults), that the pigments are absorbed and Spidex changes colour. The speed of colour change is dependent on the amount and stages of [...] mites in the field to develop the eggs. Because they start depositing eggs directly, they have an improved ability to lay more eggs in the same time frame

• Downy mildew of Cucurbits

  January 1, 1970

  bordered by the veins, which are first yellow and then turn brown. On the underside of the leave fluffy growth appears which is first white and later turns [...] zoospores are produced. However, in downy mildews, sporangia often germinate directly and the germ tubes infect the plants either through the stomata or [...] from the living plant cells. The pathogens continue to grow inside the leaves and after a while new spore-bearing structures are protruding from the stomata

• A step-by-step guide to whitefly control

  January 1, 1970

  , parasitic wasps , beneficial microorganisms and the use of sticky traps are all important tools in the IPM strategy for these crops. They integrate diverse [...] Specializes in parasitizing L2-L3 whitefly larvae and engages in host feeding. Egg placement: Lays eggs beneath whitefly larvae, penetrating the host at the fourth [...] achieved. Sticky traps will typically capture the first whiteflies weeks or even months before they are visible in the crop. Using sticky traps early provides

• Bacterial wilt, brown rot

  January 1, 1970

  s roots on the stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish [...] soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot in a very wide range of potential host plants. Damage symptoms In potato, field [...] solanacearum are wilting and yellowing of leaves and stunted plants. Inside, vascular browning is common with bacterial slime oozing from the cut. When the bacteria

• Koppert Collaborates with Valto to Control Harmful Tomato Virus

  October 10, 2018

  around the world. The two innovative biological solutions producers are located in the heart of the Dutch fruit and vegetable growing region and closely [...] continue the sale and distribution of its V10 product in the Netherlands, Koppert Biological Systems will be responsible for the distribution and sale of [...] natural viral solution to the rest of the world. The product is awaiting registration in most of the remaining EU countries and registration processes have

• Grey mould

  January 1, 1970

  cinerea ) is part of the foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes lesions [...] wounds. These lesions may encircle the stem, so the part of the plant above the lesion wilts and dies. In vegetables and strawberry, grey mould ( Botryotinia [...] fungus in many environments. It survives in plant parts like bulbs and crop residues or as sclerotia (drought- and cold-resistant structures) in the soil

• Botrytis problems often have company

  December 20, 2021

  identify the pathogen. Insects as a sidekick There are also pest insects that make life easier for Botrytis . By eating the crop or making holes in it, they [...] other pathogens to strike. But it also works the other way around: there are pests that make it easier for the fungus to get a hold. It’s a sinister interaction [...] they create the entry points the fungus needs to strike. Several species of caterpillars , such as Duponchelia , are a good example of this. They cause

• Koppert’s microbial solutions for sustainable food production

  October 15, 2020

  ty and protect the environment. At the same time the current global pandemic has accelerated consumer pressure for sustainable food production and safe [...] interest in the provenance of our food. "At Koppert, we expect consumer awareness and the pressure they exert on food production to increase. People are becoming [...] becoming increasingly critical about the use of chemical agents in farming methods and this is why we are stepping up the production of microbial solutions

• Limonica

  January 1, 1970

  Carrier Millet husks, bran and sawdust. Application Turn and shake bottle gently before use Push the centre of the cap to open the dosage hole Carefully sprinkle [...] or Natutec Airobug Dosage The dosage of Limonica depends on climate, crop and pest density and should always be adjusted to the particular situation. Start [...] Start introduction as soon as the first pests are detected in the crop. Introduction rates typically range from 50-250 per m 2 /release. Releases should

• Crazy roots, hairy roots, crown gall

  January 1, 1970

  change in the hormonal system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and causes [...] overgrow the substrate and in severe epidemics the drippers get clogged. In tomato, excessive vegetative growth occurs. Life cycle and appearance of Crazy roots [...] Adjust the work order in greenhouses to fit with the hygiene protocol Disinfect the nutrient solution in order to prevent biofilm growth inside the irrigation