• Cotton aphid

  cotton, citrus, coffee, cocoa, eggplant, cucumber, melon, pepper and many ornamental plants such as chrysanthemum and kalanchoe. The cotton aphid ( Aphis gossypii [...] 50 different viruses, including the cucumber mosaic virus. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones [...] making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew, contaminating fruit and ornamental crops and rendering

• Grey mould

  foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes lesions on pruning wounds [...] infected after abortion and then provide a large amount of inoculum Extra Silicon and/or Calcium nutrition hardens the cell walls and makes it harder for the [...] environments. It survives in plant parts like bulbs and crop residues or as sclerotia (drought- and cold-resistant structures) in the soil. Damage symptoms

• Asparagus

  like the related Allium species of onion and garlic. Nowadays the onion-like plants belong to the Amaryllidaceae and asparagus are classified as Asparagaceae [...] plant in most of Europe, western Asia and northern Africa. Commercially it is an interesting vegetable crop and it is extensively cultivated. Asparagus [...] ‘green asparagus’ and ‘white asparagus’. To produce white asparagus, the shoots are not exposed to the sun (they are covered with soil) and without this exposure

• A Growing Success at Welgro Produce

  January 13, 2022

  growing a quality crop of cucumbers. They have been mentored by their predecessors, Tom Collins and Jim Carty, who have grown cucumbers on the nursery since [...] “It is good to have so much encouragement and support from the local community and especially from Tom and Jim,” commented Shane. Their first year’s [...] them that growing cucumbers is not without its challenges. Cucumber crops can be sensitive to changes in their growing environment and susceptible to attack

• 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 ornamental [...] prepupa, pupa, and finally the adult insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft [...] prepupal and pupal instars can be recognized by their developing wing buds. Compared to the prepupa, the pupa has longer, more developed wing buds and longer

• Shallot aphid

  crops such as onions, shallots, strawberries, lettuce, brassicas and potatoes and many ornamentals . The shallot aphid is cosmopolitan and widely spread [...] Petioles are shortened and leaves curled and twisted. Blossom trusses are also affected, fruits remain small and yield is reduced. On bulbs and shallot, the aphids [...] plants. Life cycle and appearance of The shallot aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety

• European red mite

  (apple, pear, plum and cherry). However, it can attack a large scale of other woody plants and is occasionally a problem on roses and other ornamentals [...] yellowish red, and more slender and tapered near the hind end. The development from egg to adult goes faster at higher temperatures and takes approximately [...] in diameter, dark red, and oval with small ridges running top to bottom, with a thin stalk on top. They look a bit like an onion. Adult females are about

• Two-spotted spider mite

  tomatoes and cucumbers, as little as 30% damage of the leaf surface can lead to loss of the crop. The nymphs and adults also produce webs, and plants can [...] increased transpiration and reduced plant growth. As damage increases, whole leaves turn yellow, and as more cell sap is removed, the leaf, and eventually the whole [...] far the most important species in greenhouses and many outdoor crops. Spider mite damage Larvae, nymphs and adults cause damage to the host plant by feeding

• Downy mildew of Cucurbits

  during propagation and maintaining a warm and dry climate in greenhouses. Use hygiene measures. Start clean, remove crop residues and prevent splashing [...] pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and squash. Damage symptoms Downy mildew pathogens infect [...] occasionally also stems and fruits. They cause lesions on the upper leaf surface, bordered by the veins, which are first yellow and then turn brown. On the

• Cabbage moth

  beetroot, onion, rhubarb as well as chrysanthemum and carnation. It is a species found in Europe, North Africa (Libya, Canary Islands), Japan and sub-tropical [...] the middle. Head and thorax are grey-brown with white spots, and the abdomen is a pale, greyish brown. The moth flies only at dawn and dusk, hiding in the [...] producing skeletonized leaves, holes and frass on leaves. The caterpillars destroy large numbers of leaves and their frass accumulates in the heart of