• Cut flowers

  northern Argentina to Mexico and the Caribbean. Is grown from a bulb as a cut flower or sold as a pot plant. Freesia : The freesia is a herbaceous perennial [...] Origin, cultivation method and substrate differ greatly. Important types are: Rose: The rose belongs to the genus Rosa from the Rosaceae family. The flowers [...] colors and sizes. Hippeastrum is the Latin name for a bulbous plant that originates from Central and South America. It is a bulb plant from the large family

• Pink Bollworm

  General The pink bollworm is important pest in cotton cultivation. The pink bollworm is native to South Asian countries and has spread to all cotton growing regions [...] symptoms Shredding of buds due to infestation of flower buds. Formation of rosette flower owing to flower infestation. Entry hole is plugged with excreta of the [...] infested bud and immature bolls. Premature opened bolls attract saprophytic fungi to grow in it. Life cycle and appearance Pink bollworm lays eggs all over the

• Parasitic wasps

  wasps feeding on the host’s body fluids, which can be important for their reproduction. It's important to note that not all species of parasitic wasps engage [...] wasps employ two primary methods to control pests: parasitization and host feeding. Parasitization Parasitization is the primary means by which parasitic [...] body or attaches them to the host's exterior. Larval development: When the parasitic wasp eggs hatch, the newly emerged larvae begin to feed on the host pest

• Experience Centre

  Experience Centre is aimed at target groups linked to agriculture and horticulture. Opening hours: weekdays (Mon - Fri) from 9:00 AM to 5:00 PM. A tour takes [...] know that the vision of bumblebees differs vastly to that of humans and that we use that difference to provide our clients with the most effective pollination [...] takes an average of 1,5 hours and is suitable for groups of up to 15 visitors. In the case of bigger groups, the programme can be adapted in consultation

• Dwarf bunt

  General Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats, as [...] transmission does occur, but is less important from an epidemiological point of view. The teliospores germinate in response to moisture and form basidiospores [...] e for germination is 3-8 °C and it takes three to ten weeks for germination. The seedlings are infected after emergence; the two- to three-leaf stage plants

• Verticillium wilt

  the gum causes the xylem vessels to get blocked, which in turn causes the plant to wilt. Spores may be wind-dispersed to new hosts. In the senescent tissue [...] are formed. The spread of the fungus by mycelium growth is limited. Dispersal from plant to plant takes place via water, soil particles, tools, etc. [...] Verticillium albo-atrum is 21 °C and growth stops above 30 °C, whereas Verticillium dahliae has an optimum temperature around 25-27 °C. How to prevent Verticillium

• Oleander aphid

  the milkweed aphid, is a common pest of several important ornamental plants in the families Apocynaceae and Asclepiadaceae. It is commonly found feeding [...] and milkweeds ( Asclepias sp.). The oleander aphid is cosmopolitan, and can be found in tropical to warm temperate regions throughout the world. It probably [...] shoots of the host plants. The damage caused by the aphid colonies is mainly aesthetic due to the large amounts of sticky honeydew produced and the resulting

• Two-spotted spider mite

  urticae ) is by far the most important species in greenhouses and many outdoor crops. Damage symptoms Larvae, nymphs and adults cause damage to the host [...] urticae ) is a pest of many crops throughout the world. Despite their small size, they are capable of very rapidly doing severe damage, due to their great [...] They have an oval body that is rounded at the rear end. Their colour can vary from orange, light yellow or light green to dark green, red, brown, or almost

• Onion thrips

  General The onion thrips (Thrips tabaci) is distributed throughout the world. It is found outdoors on many plants and particularly damaging on onions, [...] Thrips cause damage to plants by piercing the cells of the surface tissues and sucking out their contents, causing the surrounding tissue to die. The resulting [...] the plant is reduced by loss of chlorophyll. When infestations become serious the leaves themselves can shrivel. Onion thrips (Thrips tabaci) is found mostly

• Cotton aphid

  reduce 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 [...] affecting cucumber. Damage symptoms The cotton aphid ( Aphis gossypii ) is an important vector for viral diseases. This aphid species can transmit more than [...] the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in