Olive scale

Saissetia oleae , is a cosmopolitan pest of citrus and olives and occurs widely in tropical regions and in greenhouses throughout the world. It is a severe pest [...] causing build-up of sticky deposits on nearby surfaces. The honeydew may attract attendant ants and sooty moulds grow on the sugary deposits. Removal of large [...] flat. Their shield is dark grey or brown to black and has two transverse crests and one median ridge that together form the letter H. On citrus, early stages

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Goat moth

head. The pupa is 5-6 cm long, dark brown, with spines on the abdominal segment. The moths fly at night in June or July and lay eggs on tree trunks in [...] Cossus cossus ), is a pest of broad-leafed trees. It is most often found in birch, ash, willow and elm but can also attack fruit trees. It is widespread in [...] eventually die. Life cycle and appearance of Goat moth The wingspan of the adults is 70-100 mm; body and wings are dull greyish brown, partly suffused with grey

Shore fly

vicinity of water. They feed on algae. Other shore fly species have diverse feeding habits but the larvae of most species feed on rotting material. Shore flies [...] feed on green algae. However, they can transmit plant diseases and can be a nuisance to greenhouse works by their sheer numbers. Frass deposited on leaves [...] bean-shaped. A first instar larva is translucent white. Second instar larvae are brownish, less translucent and their body is cylindrical. The larvae are found

Vine mealybug

ae, and is also known by the names Mediterranean vine mealybug and Grapevine mealybug. As the name indicates, this mealybug is mostly found on grapevines [...] grapevines, but also on figs and pomegranates. Damage symptoms Mealybugs inflict damage on the crop in various ways: Nymphs and females extract the sap from the [...] defoliation. The overall effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low

Garden chafer

larval stage when it feeds on the roots. First instar larvae mainly feed on small humus particles, second instar larvae on fine roots of grasses. Third [...] within stems of plants and on strawberry fruits lying on the ground. Both adult beetles and larvae are polyphagous and feed on a wide variety of plant species [...] Phyllopertha horticola ) is a beetle from the Scarabaeidae family. It does most of its damage in the larval stage when it feeds on roots of grasses and clover

Eretmocerus eremicus

eremicus Eretmocerus eremicus is a small parasitic wasp belonging to the family Aphelinidae . This beneficial insect is used as an important biological [...] to use Eretmocerus eremicus The natural enemy Eretmocerus eremicus is available on cardboard strips as single species ( Ercal ) and in combination with [...] repeated at least 3 times at weekly intervals or until control is achieved. Depending on the specific situation, it may be better to switch to the use of

Whitefly

hardens. The growth of hairs on the insect depends on the leaf: the longer the hairs on the leaf, the longer the hairs on the insect. In other words, the [...] yellow in color. This is due to the wax produced by the adults, which is covering their body and wings. Some species have dark markings on their wings or bodies [...] are often found on the undersides of leaves, where they feed on plant sap. Damage: Whiteflies can cause damage to leaves by feeding on plant sap. This

Cactus mealybug

s cactearum ) is a pest of cacti and other succulents. It was first described in England but its origin is not clear. It is now found on many greenhouse-grown [...] mealybug usually infests stems but can occasionally be found on crowns, roots. and flowers. Depending on the host plant species, infestations with cactus mealybug [...] They are actively mobile and known as ‘crawlers’. From the second instar on, they are covered with white waxy exudate and become more sedentary and only

Damping-off

root system survives. On the border between air and soil or substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping [...] General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] irrigation water. Pythium aphanidermatum mostly occurs in young plants and damage is more extensive in young crops. Damage symptoms Pythium affects roots, in