Impatiens thrips

spread as a consequence of the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition to many ornamental [...] leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations [...] americanus is often found low in the crop. In sweet pepper the damage can be seen as discolouration of older leaves at the bottom of the plant. Solution Finder

May beetle

appearance of the may beetle The adults belonging to the majority of Phyllophaga species are very similar in terms of their external appearance. In short, [...] roots, resulting in visible water stress and ultimately ending in the death of the plant. From the third stage onwards, the impact of this pest increases [...] measuring approximately 5 to 7 cm in length. To differentiate between species, an examination of the position of the setae in their final abdominal segment

Tobacco whitefly

transmission of viruses, including TYLCV in tomato. The consumption of plant sap and secreting of honeydew by whiteflies reduce the aesthetic value of crops. [...] irregular ripening in tomatoes and sweet peppers, yellowing of the flower stalks in gerbera, and serious yellowing of the leaves of French beans. Other [...] identified on tobacco in Greece in 1889, hence the name tabaci . It has subsequently been found in most tropical and subtropical countries of the world. The original

Mealybugs and scales

low in proteins and rich in sugars. In order to gain an adequate intake of protein, mealybugs must ingest large quantities of sap, getting rid of the excess [...] mealybugs in your crop Life cycle of mealybugs & scales Mealybug & scale damage Although most species of mealybugs feed on the aerial parts of the plant [...] the reduced level of photosynthesis in the leaves also reduces flower and fruit production; in ornamental crops, the mere presence of mealybugs is sufficient

Thrips

she makes an opening in the plant tissue. The eggs are laid in leaves, flower petals and in the soft parts of stalks. On the leaves of sweet pepper, for instance [...] a wide range of crops, including fruits, vegetables, and ornamental plants. It is one of the most damaging thrips species in many parts of the world Onion [...] cause problems in agriculture and horticulture. Thrips are small insects (0.5-14 mm), with the largest species found in the tropics. In temperate regions

Glasshouse potato aphid

presence in the crop. The wingless adult stage of the greenhouse potato aphid is rather squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It [...] alternation of hosts, and the two types of life cycles occur on the same host plant. The aphid can overwinter not only in greenhouses, but also outdoors in sheltered [...] Aulacorthum solani) is a native European species of aphids , seriously affecting crops of sweet pepper in particular. These aphids further affect ornamental

Leaf miners

damage. In (sub)tropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting [...] quantity of foliage can be lost before the harvest is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the species of host [...] family of small flies whose larvae tunnel into the leaves of plants, creating ‘mines’. There are many species of leaf miner affecting various crops in temperate

Northern Corn Rootworm

They appear in late July and remain in corn fields until first frost. Females lay their tiny, white eggs in the soil at the base of corn plants in late su [...] a devastating pest of cultivated corn in North America, with losses and management expenditures totaling over 1 billion dollars. In Eastern Canada, the [...] interbreed, and they coexist in population patches across corn-producing regions, depending on the method of crop cultivation used in each field. Semivoltine

European corn borer

larvae pupate in situ in the galleries or in the soil. Fully grown larvae overwinter inside their tunnels in stubble, stalks and maize ears, or in wild plants [...] mm in diameter and white when first laid but later turn yellow. The black head of the larva can be seen just before hatching. The eggs are laid in a mass [...] base of the hairs. The head is brown to brownish black. The pupae are up to 2 cm long and light to dark reddish brown. In Europe, adults appear in June

Crane flies

General The larvae of crane flies , called leatherjackets, live in the soil and feed on roots and shoots (which they pull into the ground of mainly grasses [...] during the autumn.. Larvae overwinter in the soil, usually in the third instar stage. and start feeding again in spring. They become active again and feed [...] symptoms Larval feeding causes brown spots in grasslands, turf and cereal fields. Exit holes of the burrows of the larvae might also be visible. Secondary