Leaf miners

This is a family of small flies whose larvae tunnel into the leaves of plants, creating ‘mines’. There are many species of leaf miner affecting various [...] Life cycle of leaf miners Leaf miner damage Leaf miners cause damage to plants both directly and indirectly. The most direct damage is caused by the larvae [...] such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however, a considerable quantity of foliage

Western flower thrips

necrotic spot virus (INSV). Both viruses affect a wide range of plants, and often a single host plant may be infected by both viruses. [...] flower thrips (Frankliniella occidentalis) can be found on a wide variety of plants, including many vegetable and ornamental crops in greenhouses, and on various [...] flower petals and in the soft parts of stalks. They are inserted into the plant tissue with a saw-like ovipositor. Larvae are nearly transparent white or

Cactus mealybug

Depending on the host plant species, infestations with cactus mealybug cause discoloration of the plants and later necrosis of the tissue. Plant deformations can [...] around the world as it was probably distributed by the trade in ornamental plants. Damage symptoms The cactus mealybug usually infests stems but can occasionally [...] can also occur. Heavily infested plants stop growing and will eventually die. Life cycle and appearance of Cactus mealybug Mealybugs get their name from

Asparagus

spring. It is a flowering, perennial plant species that belongs to the genus Asparagus . In the past, the asparagus plant was classified as a lily species [...] onion-like plants belong to the Amaryllidaceae and asparagus are classified as Asparagaceae . Asparagus officinales is an indigenous plant in most of Europe

Cress

man's pepper. Garden cress is an annual plant and can grow up to 60 cm (24 inches) high. The upper part of the plant has many branches. Land cress ( Barbarea [...] About Cress, at time also named garden cress to distinguish it from similar plants, is an edible herb and its cultivation around the world is growing fast [...] cress, is a biennial herb and belongs to the family of Brassicaceae . This plant originates in southern Europe and western Asia and has been domesticated

Leek moth

stalk or the inflorescence of the host plant. Feeding on the leaf tissue by the caterpillars causes a reduction in plant growth; if larvae are numerous, weakening [...] weakening or withering of the plant can occur. On old leaves, open galleries can be seen which decrease the economic value of the plant. Severe damage also occurs [...] occurs on inflorescences of plants cultivated for seed production where serious seed loss can occur. On leeks, larvae mine the central leaves which have

Early blight

conducive to infection. In greenhouses: avoid high RH. Prevent plant diseases by optimizing plant potential and crop resilience. [...] rain. How to prevent Early blight Remove crop residues, weeds and volunteer plants. Use clean seed and propagation materials. Practice crop rotation, in particular

Thrips

feed on all aerial parts of the plant and are fairly mobile. Immediately after hatching, the larvae begin to feed on plant tissue on the underside of the [...] fliers and can move quickly between plants. They are often found on the undersides of leaves, where they feed on plant sap. Damage: Thrips can cause damage [...] fruits by feeding on plant tissue. This can result in distorted growth, discoloration, or scarring. They may also transmit plant viruses. Recognise thrips

Hemp russet mite

on hemp/cannabis plants. Aculops cannabicola is host specific to hemp/cannabis ( Cannabis sativa ). It cannot survive on other plants. Damage symptoms [...] mites sucking out the contents of plant cells. Hemp russet mite develops on the stems and petioles of the hemp plant and can cause stunting. When populations

May beetle

to crops, since they feed on plant roots, resulting in visible water stress and ultimately ending in the death of the plant. From the third stage onwards [...] Overview May beetles are beetles from the Scarabaeidae family, and are plant-eating species from the Melolonthinae subfamily. Although this subfamily contains [...] Damage symptoms Initial damage is not visible in the aerial parts of the plant, as the larvae only feed on root hairs and organic material during the first