Black bean aphid

temperate regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other crops. Damage symptoms Economic [...] bean aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes [...] Indirect damage is caused through the transmission of plant viruses. Infestations start usually at the younger parts of the plant but can spread all over

Damping-off

roots rot and very little of the root system survives. On the border between air and soil or substrate the plant turns brown. A typical symptom of a Pythium [...] stripping of the skin from the root cortex with a finger nail. Life cycle and appearance of Damping-off Pythium belongs to the Oomycetes, a separate group [...] considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress, caused for example

Tomato russet mite

on the lower part of the plant and moves upwards as the mites ascend. Life cycle and appearance of tomato russet mite All life stages of the tomato russet [...] in Australia and is a pest in tomatoes in all areas where they are grown. Other members of the plant family Solanaceae may be affected to a lesser extent [...] Damage symptoms Damage is caused by the mites sucking out the contents of plant cells. Affected leaves are slightly curled and acquire a silvery sheen on the

Shallot aphid

Life cycle and appearance of The shallot aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour [...] remain small and yield is reduced. On bulbs and shallot, the aphids often occur at the end of the storage period causing malformation of new plants. Life [...] lettuce, brassicas and potatoes and many ornamentals . The shallot aphid is cosmopolitan and widely spread in Europe. Damage symptoms Feeding of shallot aphid

Rice root aphid

indoors. However, they can only live a few days without feeding on a host plant and they give birth to live offspring instead of laying eggs. Damage symptoms [...] mould and fungus. Transmission of viral disease between plants. Life cycle and appearance of the Rice root aphid Like most aphids , the rice root aphid appears [...] both winged and wingless forms. The wingless form is dark olive-green, with a round body 1.4–2.4 mm long. It lives and feeds on the roots of the host plant

Beet armyworm

The colour and pattern of the caterpillars is highly variable and depends partly on the host plant, the stage of development and the climate. A full-grown [...] worst damage is caused by attacks on flowers and buds. Life cycle and appearance of Beet armyworm The beet armyworm (Spodoptera exigua) is a small, nondescript [...] lays its eggs in packets, sometimes in several layers, and on top of a mass of white, cottony hairs and scales from the moth’s body. The eggs, usually grey

House fly

species of fly found on livestock farms, they represent both a nuisance and a risk for disease transmission. High-density housing systems and abundant [...] Salmonella and E. coli ), protozoan parasites (such as Giardia ), and the eggs of many parasitic worm species. Life cycle and appearance of House fly The [...] Houseflies are a well-known pest of farm and home. Believed to have originated in central Asia, the insect expanded its range worldwide long ago as a commensal

Crane flies

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 and cereal [...] do not cause any damage. Damage symptoms Larval feeding causes brown spots in grasslands, turf and cereal fields. Exit holes of the burrows of the larvae [...] Secondary damage may come from birds and rodents feeding on larvae and digging up turf. Life cycle and appearance of Crane flies Adult crane flies are large

Roots Growers positive about Mycotal against whitefly

is and remains a pernicious pest for growers of tomatoes and other crops. This is further aggravated by the fact that there are almost no effective chemical [...] tomato that is effective and, unlike other products, also has a low MRL, which is a requirement for small cherry tomatoes. However, as we can only use this [...] We used the same dosage of Enermix in the three test plots, and slightly higher dosages of the predatory bug. As a result of that choice, we’ve yet to

European corn borer

are smaller and produce fewer kernels per ear. Life cycle and appearance of European corn borer The adults have a wingspan of 22-32 mm and pale yellowish [...] 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 and overlap [...] borer ( Ostrinia nubilali s), is a severe pest of maize and has also been reported to attack apple, strawberries, peppers and other plants. It is present in