• Pea leaf miner

  larva, that emerges from its tunnel just prior to pupating, is known as a prepupa. This stage lasts only a few hours. [...] ly damaging to leaf vegetables and causes problems especially in lettuce grown on open ground. Damage symptoms Leaf miners cause damage to plants both [...] leaf tissue, leading to desiccation, premature leaf-fall and cosmetic damage. In tropical and subtropical areas this can lead to burning in fruit such

• Tobacco aphid

  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 excess [...] 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 [...] matt, never glossy. Winged individuals have a brown-black head and thorax and a reddish abdomen. There is a dark brown spot on the abdomen and several

• Tomato leaf miner

  larva, that emerges from its tunnel just prior to pupating, is known as a prepupa. This stage lasts only a few hours. [...] miners cause damage to plants both directly and indirectly. The most direct damage is caused by the larvae mining the leaf tissue, leading to desiccation, premature [...] lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however, a considerable

• Southern European marshland pyralid

  caterpillars to inflict damage to the roots of crops cultivated in an ebb-and-flow irrigation system. The damage threshold varies considerably according to the [...] singly or in groups of 5 to 10 eggs, overlapping in a tile-like fashion on both the upper and lower surface of leaves close to the veins, or low on the [...] pyralid or European pepper moth (Duponchelia fovealis) is a polyphagous species feeding on a wide range of hosts from 38 plant families. They include

• Aphipar

  develops inside the aphid, which converts into a leathery mummy. The adult parasitic wasp emerges through a hole at the rear of the mummy. The first mummies [...] site for at least a few days Dosage The dosage of Aphipar depends on climate, crop and aphid density and should always be adjusted to the particular situation [...] /release. Releases should be repeated at least 3 times. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best

• Cabbage leafroller

  leafroller (Clepsis spectrana) is native to North-West Europe. It is a highly polyphagous species causing damage to field grown cabbage, apple, pear as well [...] opening bud to the growing tip, while older caterpillars eat a hole in the shoot and hollow it out, causing the shoot or growing point to wilt and die. [...] growth leads to an untidy roll of leaves with large feeding holes. Caterpillars can also bore into the plant: young caterpillars eat a path from an opening

• Don Sanchez Fresh innovates with biological control in avocados

  maintained a close relationship that has allowed them to go one step further. Pest and disease control in avocado trees In avocado production there are a number [...] insects. It also takes a lot of dedication to obtain the favorable results that biological pest control gives. More open doors thanks to biological control [...] farmers to comply with these regulations and ensure safe and environmentally friendly crop production. All farmers must take a step forward to stay in

• Horse-chestnut leaf miner

  of the first generation emerge from mid-June to late-July. Cameraria ohridella has two to four generations a year, depending on the temperature conditions [...] where it spread to most of Europe. Since then, in all invaded regions, outbreaks have continued unabated, causing aesthetic damage to horse-chestnut, one [...] Trees with a low number of attacked leaves are not greatly affected, but when the entire surface of leaves is covered with mines, the leaves start to dry out

• Bugs

  bugs Bugs can cause extensive damage to greenhouse and field crops by feeding on plant tissues and fruits, leading to deformation, discoloration, and yield [...] control Learn more about What are bugs? Heteropteran bugs form a group in the order Hemiptera , a highly diverse group of insects, containing both harmful and [...] yield loss. Effective bug control is key to maintaining healthy, high-quality crops. Biological control of bugs combines targeted monitoring and natural

• Black vine weevil

  around the end of October. The larvae that hatch have a white, translucent to pinkish body and a reddish brown head. These larvae live in the root zone [...] between 2 and 20 cm. Pupae are white to cream coloured and 7 - 10 mm long. Outdoors there is a single generation each year. A population of black vine weevils [...] material. Because Otiorhynchus sulcatus is parthenogenetic a single female is enough to start a new population.