• Buckthorn-potato aphid

  great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized viviparous females continuing to produce new g [...] usually found in the lower parts of the plants and are not very mobile. In autumn, winged males and females are produced, which return to the primary host [...] betraying their presence in the crop. Wingless females of the buckthorn- potato aphid are 1.1-2.4 mm long and bright pale green to yellowish green. The antenna

• Crop Monitoring and Scouting

  healthy and continue to thrive. Digital scouting apps In the digital age, scouting is aided by mobile apps that can catalog and analyse data in real time. These [...] process and make it more efficient. Using a crop scouting tool in horticulture can lead to more effective, sustainable, and profitable crop production by [...] Understanding crop monitoring and scouting In the world of agriculture and horticulture, the phrase "knowledge is power" couldn't be truer. Crop monitoring

• Early blight

  sporulation. Species may differ in specific symptoms. Damage symptoms Alternaria solani causes small green to dark brown spots to occur on leaves. Those spots [...] of leaves, Alternaria solani can spread to the flowers (especially dangerous in crops for seed production) and to the crown. Sporulation of Alternaria occurs [...] brassicae and A. brassicicola : adjust the sowing date to avoid conditions conducive to infection. In greenhouses: avoid high RH. Prevent plant diseases by

• Predatory mite pioneers: A journey of biocontrol innovations

  September 30, 2024

  rs in the Netherlands in 2001. “In 1967, our founder Jan Koppert reached a major breakthrough by being the first to use predatory mites to control pests [...] grown in Almería, Spain, forced a shift from conventional to biological crop protection methods. “Growers urgently needed a solution to a difficult-to-control [...] are now closer than ever to customers in the Niagara region, enabling us to respond more swiftly to local needs. This local-to-local approach is not only

• Tobacco aphid

  Myzus persicae subsp. nicotianae ) is also encountered in a range of crops in greenhouses, such as sweet pepper, aubergine, chrysanthemum, and various pot plants [...] yield. Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The [...] The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid . It is not known to what extent tobacco aphids

• Phytophthora blight

  optimal for crop growth. Phytophthora overwinters in roots, infected tubers and bulbs or in the soil in different stages: as oospores (sexual overwintering [...] Zoospores are spores with flagellae which enable them to move through water. Infection is usually from the root to the foot, but direct infection of the foot also [...] produced in the sporangia. For germination on above-ground plant parts, leaf wetness is required. Dispersal is by wind and rain causes the pathogen to be returned

• Cabbage moth

  caterpillar varies in colour from green or brown to black. In younger instars, the relatively large head capsule is conspicuous. In older instars, the [...] grey-brown to black forewings, with a kidney-shaped white-rimmed marking in the middle. The hindwings are light brown with a rather inconspicuous spot in the [...] crops such as sweet pepper, tomato, strawberry, lettuce, beetroot, onion, rhubarb as well as chrysanthemum and carnation. It is a species found in Europe, North

• Western flower thrips

  vegetable and ornamental crops in greenhouses, and on various weeds. It is an especially significant pest in cucumber, sweet pepper, eggplants, and many [...] orange to almost black. Western flower thrips (Frankliniella occidentalis) usually pupate in the ground, although pupae can also be found on leaves, in flowers [...] even at low densities, giving rise to deformities such as the “pig-tail” fruit sometimes found in cucumber crops. In many ornamental crops, even very low

• American serpentine leaf miner

  cosmetic damage. In tropical and subtropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown [...] exit hole in the leaf with its mouth parts. After roughly one hour the larva crawls out of the leaf and falls to the ground. This occurs in the early morning [...] plants such as chrysanthemum, gerbera, gypsophila, celery, sweet pepper, pea, bean and potato. In greenhouses, it is mainly found on gerbera and chrysanthemum

• Greenhouse whitefly

  retarded. In full sunlight, leaves can wilt and fall. Such leaf damage can in turn influence the development of fruit and lead to a reduction in yield. The [...] sticky. Dirt adheres to the fruit, and the growth of sooty moulds ( Cladosporium spp .) is encouraged, making it unsuitable for sale. In serious cases the [...] vaporariorum ) is one of the major pests of vegetable and ornamental crops in greenhouses throughout the world. The greenhouse whitefly ( Trialeurodes