Brown root rot, corky root rot

lesions. On older roots, the outer layers become swollen and corky and gradually break off. The corky areas often occur as horizontal bands on the roots [...] General Pyrenochaeta lycopersici is a fungal plant pathogen, infecting tomatoes and aubergine. It causes brown root rot and corky root rot. Damage symptoms [...] roots with lengthwise cracks. No discoloration is present in the xylem tissues which distinguishes it from wilts caused by Verticillium or Fusarium . Progressive

Phytoseiulus persimilis

outbreak is quickly and effectively dealt with, but the disadvantage is that it disappears rapidly in the absence of suitable prey. When prey is in short [...] product in 1967. It is a specialist predator of spider mites and can control spider mite infestations very quickly but doesn’t feed on any other prey. Under [...] Phytoseiulus persimilis is used for the control of the following pests: Spider mites Phytoseiulus persimilis mites actively seek out and prey on the Two-spotted

Bacterial soft rot, bacterial stem rot

Pectobacterium carovora is very common, but does not often reach epidemic population densities. It can survive as epiphytic bacteria on various plants or in [...] subsp. carotovora has recently been renamed Pectobacterium carotovora . It is one of the pectolytic bacteria causing extensive bacterial rots (bacterial [...] Pectobacterium carovora causes bacterial stem rot as well as soft rot. Stem rot is first noticed when plants wilt at the time of first harvest or after that

Oleander aphid

aphid, is a common pest of several important ornamental plants in the families Apocynaceae and Asclepiadaceae. It is commonly found feeding on oleander [...] bright yellow aphids can easily be seen on the shoots of the host plants. The damage caused by the aphid colonies is mainly aesthetic due to the large amounts [...] oleander and milkweeds ( Asclepias sp.). The oleander aphid is cosmopolitan, and can be found in tropical to warm temperate regions throughout the world. It probably

Two-spotted spider mite

nymphs and adults cause damage to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce the cells and suck [...] which the mites live. The webbing and spotting on the leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life [...] duration can be distinguished. Eggs are usually found on the underside of leaves. They have an oval body that is rounded at the rear end. Their colour can vary

Cutworms

these moths usually feed on roots and plant parts close to the ground, thereby often cutting the stems of young plants. This is where their common name [...] from these instars is usually observed as a cutting of young seedlings, often causing death of the cut seedlings. Sometimes wilting is observed because of [...] orange-yellow with a broad dark marginal stripe. The wingspan is about 40-55 mm and the dorsal thorax is covered with close-lying hairs. The eggs are white at

Rose aphid

General The rose aphid, Macrosiphum rosae , is a serious and often abundant pest of roses. It is virtually cosmopolitan and widely spread in Europe. Damage [...] antennae and sometimes the head is dark in colour. The siphunculi are black and bent outwards. The rose aphid usually overwinters on rose bushes in the egg stage [...] to secondary hosts. Colonies are often present on rose bushes throughout autumn until their development is hampered by cold weather. In heated greenhouses

Cryptolaemus montrouzieri

and feed on mealybug nymphs and adults. Pupal stage: Larvae pupate in various places, on any convenient stalk or on the underside of leaves or on even greenhouse [...] beetle Cryptolaemus montrouzieri is a species of beetle belonging to the family Coccinellidae. The beneficial insect is a small but highly effective predator [...] primarily on mealybugs , including species such as the citrus mealybug and the long-tailed mealybug. The predatory beetle Cryptolaemus montrouzieri is used

Potato aphid

stripe is dark green, while in pink specimens it is dark red. This longitudinal stripe is specifically characteristic of the potato aphid and is particularly [...] aphid ( Macrosiphum euphorbiae ) is of North American origin, but is these days distributed throughout the world. It is a highly polyphagous species with [...] reproduction is asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. When reproduction is sexual

Cookie Statement

Cookie Statement We use cookies on our website. A cookie is a small text file that is stored on your computer by your browser when you visit the website [...] cookies is to distinguish one user from the other. Your browser sends us the information stored the next time you visit our site. The use of cookies is secure [...] the settings stored by your browser to optimize the way our website is displayed on your screen. Analytical cookies/optional cookies We use third-party