• Rancho Los Pinos is nature's ally

  January 1, 1970

  quality and committed to sustainability and workforce well-being, they are a benchmark in the industry. Founded in 1950 by Don Luis Rodríguez Aviña, Rancho [...] pesticide use by implementing biological control and natural pollination programs. A long and increasingly sustainable road to learning and success The partnership

• Koppert is investing in smarter scouting

  May 29, 2019

  processes of manually scouting crops is very important, it is time-consuming and error-sensitive. That is why Koppert is developing the scout-app, which will [...] ity and futureproofing A team of specialists is developing the scout-app together with Koppert’s growers and consultants, and a number of Dutch tomato [...] Koppert Biological Systems is working on a groundbreaking innovation that will change the world of scouting. The scout-app will automatically analyse Horiver

• Root rot of carrot

  January 1, 1970

  necrotic leaf spots Life cycle and appearance of Root rot of carrots The fungus of R. carotae has delicate, simple morphological features hence is not easy [...] pathogens in Northwest Europe. Damage symptoms Rhexocercosporidium carotae is a slow-growing fungus that can infect both roots and foliage. The infection [...] after which whole sections of the leaf will die off. The fungus appears to prefer older tissue. In the field, the disease is difficult to distinguish from

• Diglyphus isaea

  January 1, 1970

  rather than a leaf miner has come from the mine. This is also seen in the pillars that remain visible as black spots in the leaf. The adult is metallic green [...] it empty from the outside, as a result of which the leaf miner larva dies. A few days after being parasitized, the leaf miner larva turns flaccid and brown [...] instars: the first is colourless and transparent, the second is yellow and semi transparent with a brown fat body, and the third larval instar is blue-green.

• Knowing & recognizing

  January 1, 1970

  characteristics. Shop now Koppert - A knowledge company The use of biological control is not a simple process, it has become a complex system in which many aspects

• Tomato leafminer

  January 1, 1970

  Pupation takes place in the soil or on the surface of a leaf, in a curled leaf or in a mine. If they leave the mines they build silk cocoons on the leaflets [...] General The tomato leaf miner (Tuta absoluta), a major pest of field- and greenhouse-grown tomatoes, belongs to the family of Gelechiidae . It is oligophagous [...] inside the leaf, stem or fruit. In the second to fourth instars they become greenish with a black band behind the head. The prepupae of the tomato leaf miner

• Miglyphus

  January 1, 1970

  outside the leaf miner), using the dead larvae as food. Adult females also kill young leaf miner larvae by using them as a food source. This is known as host [...] isaea in the crop is signalled by short mines that contain dead leaf miner larvae. Older larvae and pupae are visible through the leaf. Pack size 500 adults [...] Pests Leaf miners ( Lyriomyza spp.). Mode of action Adult female parasitic wasps of Diglyphus isaea kill second and third instar leaf miner larvae in the

• Black sigatoka disease

  January 1, 1970

  the whole leaf turns brown and ultimately dies. In cases of severe infection leaves may die within a few weeks. Because of the lack of leaf tissues, fruit [...] Mycosphaerella fijiensis also known as black sigatoka, is an ascomycete fungus that causes leaf-spot of banana. Damage symptoms Black sigatoka (Mycosphaerella [...] one month old. The symptoms run parallel to the veins. Within a few days, the spots become a few centimetres in size and turn brown with light grey centres

• Powdery mildew

  January 1, 1970

  General Powdery mildew is a fungal disease that is caused by many different species of fungi such as Erysiphe, Podosphaera, Oïdium, Leveillula. Damage [...] they don’t play a role in the epidemics. Fungal spores germinate on the leaf surface and the germ tubes grow and branch out on the leaf surface. Small [...] the leaf. In severe epidemics in cereals, the ears may also be infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because

• Downy mildew of Cucurbits

  January 1, 1970

  water is required. For most downy mildews, the optimum temperature is around 15 o C and the closer the temperature is to this, the shorter the leaf wetness [...] after a while new spore-bearing structures are protruding from the stomata. Because there are more stomata on the underside of the leaf, this is where [...] General Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and squash