May beetle

remain in the soil until the temperature is high enough to emerge. Finally, when the rains arrive, the adults are encouraged to emerge in order to copulate [...] approximately 5 to 7 cm in length. To differentiate between species, an examination of the position of the setae in their final abdominal segment is needed, although [...] third stage onwards, the impact of this pest increases. Damage symptoms Initial damage is not visible in the aerial parts of the plant, as the larvae only feed

Rhyzobug

effect Small scales are consumed entirely. In larger scales feeding damage is visible as irregular holes in the scale cover. Pack size 500 adults. Presentation [...] hulls. Application Apply Rhyzobug in the evening. Open the cap and tap the beetles directly on the plants. Be aware that adults may not fly away immediately [...] should always be adjusted to the particular situation. Start introduction as soon as the first armoured scales are detected in the crop. Releases should

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Brown soft scale

brown soft scale Coccus hesperidum is very common in tropical and sub-tropical regions and is also a common pest in greenhouses throughout the world. C [...] orchids. Damage symptoms The scales produce enormous quantities of honeydew. This is usually the first visible symptom. Because of this, C. hesperidum is often [...] scale is always darker than the margins. Females reproduce parthenogenetically (without mating). It may appear that they bear live young, but in fact the

Common cockchafer

for the larvae to fully develop. The grubs are 10 to 20 mm in the first autumn, 30 to 35 mm by the following autumn, and 40 to 46 mm in the spring of their [...] also known as the doodlebug or May bug is a European beetle of the genus Melolontha, in the family Scarabaeidae. Damage symptoms The common cockchafer ( Melolontha [...] Melolontha melolontha ) does most of its damage in the larval stage, when it feeds on roots of grasses and clover. The adults feed on the leaves of trees

Leaf stripe

graminea is monocyclic, which means there is only one disease cycle during the cropping season. The fungus is seed-borne and this systemic infection is the [...] General Pyrenophora graminea is a disease of Barley that causes significant yield losses. Damage symptoms Symptoms first occur on the first, second and [...] soil temperatures above 15 °C. How to prevent Leaf stripe Produce seed in semi-arid environments without irrigation, to decrease the chances of infection

Click beetles

plants. Damage symptoms The click beetles feed on the roots and bore into the base of plants. This can cause the plants to wilt and die. Damage is more severe [...] laid in May or June in groups in the soil. They hatch about one month later and the larvae start to feed on roots. The larvae (‘wireworms’) are long, thin [...] fully grown the larvae pupate in the soil in summer. The adults appear about 4 weeks after pupation, but usually remain in the soil until the following spring

Box tree moth

also attack the bark of the trees, causing them to dry out and die. Damage on a box-tree most often starts in the lower part, where the oldest leaves, which [...] The box tree moth ( Cydalima perspectalis ) belongs to the family of Crambidae . It originates in the temperate and sub-tropical regions of East Asia (Japan [...] perspectalis ) is an oligophagous species feeding on the leaves of box tree ( Buxus spp. ) species mainly. Severe defoliation can lead to the death of the

Bacterial canker of tomato

General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional [...] shows whitish ooze with bacteria in the case of C lavibacter infection, but other than that the disease is difficult to distinguish from wilting caused [...] infection is mostly from infected propagation material. It spreads to other seedlings by touching the plants in greenhouse crops and by water in field crops

Pea blight, leaf and pod spot

sunken and surrounded by a dark brown to red-brown border. The first infection is often on the primary leaves. The fungus is seed borne and thus also causes [...] ) causes foot rot in peas, whereas Ascochyta pisi does occur sometimes at the stem base but is not part of the foot rot syndrome in peas. Infected seeds [...] General Ascochyta pisi is a fungal plant pathogen that causes A scochyta blight on pea (leaf blight or pea blight) and lesions of stems, leaves, and pods