Tea mosquito bug

Life cycle and appearance Adult is slender 6 - 8mm long, black colour with red thorax, black and white abdomen and greenish brown wings. Females is capable [...] Helopeltis antonii attack cashew nut guava, neem and tea. Damage symptoms Helopeltis is a sucking pest. Nymphs and adults are damaging stages which suck the sap [...] tender stems and buds. The toxic saliva of the insect is injected to the plant tissues at the time of feeding causes reddish brown patches. As a result punctured

Black sigatoka disease

veins. Within a few days, the spots become a few centimetres in size and turn brown with light grey centres. These spots enlarge further and the tissue around [...] turns yellow and dies. Lesions merge and the whole leaf turns brown and ultimately dies. In cases of severe infection leaves may die within a few weeks. [...] maturity is hampered. Life cycle and appearance of Black sigatoka disease Black sigatoka ( Mycosphaerella fijiensis ) produces both ascospores and conidia

Brown root rot, corky root rot

General Pyrenochaeta lycopersici is a fungal plant pathogen, infecting tomatoes and aubergine. It causes brown root rot and corky root rot. Damage symptoms [...] e disease causes more and more destruction of the root system and subsequent loss of vigour and further wilting. Life cycle and appearance of Brown root [...] of soil particles by farm equipment and cultivation practices. However, this fungus is a poor competitor against a balanced microbial population in soil

Grape downy mildew

cottony growth. Shoot tips and central axis of flower clusters become distorted into a curl or corkscrew. Inflorescences and young berries turn yellow or [...] Plasmopara viticola is a plant pathogen causing downy mildew in grapes. P. viticola occurs in nearly all grape-growing regions worldwide. Damage symptoms [...] translucent ‘oilspots’ with a chocolate-brown halo. On older leaves: small, angular, yellow to reddish-brown spots forming a mosaic-like pattern. Sporulation

Gummy stem blight

debris and disinfect the greenhouse Choose a cultivar that is less susceptible to internal fruit rot Use clean propagation material During cropping and between [...] survives in crop debris and produces the sexual ascospores and asexual conida simultaneously. The spores germinate when free water is present on the plant [...] feasible in high-wire crops) Pick and remove dead and diseased leaves Prevent plant diseases by optimizing plant potential and crop resilience.

Leaf stripe

graminea is a disease of Barley that causes significant yield losses. Damage symptoms Symptoms first occur on the first, second and third leaf and subsequently [...] stripes are formed at the base of the leaf and the leaf sheath. They gradually extend and become brown and chlorotic and may merge. Eventually this leads to the [...] This is typical for this disease. Infected plants may be stunted and heads may be distorted and failing to emerge from the sheath. Ear length and the number

Cucumber

cultivation history goes back some 3000 years and it is now being produced on most continents. The cucumber plant is a creeping vine that grows up trellises or [...] About The cucumber ( Cucumis sativus ) is a popular, extensively cultivated plant that belongs to the gourd family of Cucurbitaceae . The cucumber originates [...] cucumber plant has large leaves and it produces an elongated, cylindrical fruit that may become as long as 60 cm or 24 inches long and 10 cm or 3.9 inches in diameter

Swirski-Mite Plus

swirskii is most effective at temperatures between 20 and 32°C (68 and 90°F). It is not effective at temperatures below 18°C (64°F). A. swirskii is sensitive [...] ha and hang them evenly spaced in the crop. Release should be repeated after 4 weeks if the pest is not controlled. Consult a Koppert advisor or a recognized [...] thrips species and eggs and larvae of whitefly . Crops Do not use in tomato. Mode of action Predatory mites multiply in the sachet and disperse into the

Thrips

presence in the crop. At a later stage, the empty cells become desiccated and the adjacent cells turn brown. The vigour of the plant is also reduced by loss [...] With a serious infestation the leaves themselves can shrivel, and there can be varying levels of fruit damage depending on the species of thrips and their [...] Several species of thrips are a major problem in greenhouse horticulture. The Western flower thrips ( Frankliniella occidentalis ) is the most damaging species

Flies

fruits in Europe and North America. Sciarid flies and shore flies are mainly a problem in greenhouses. Their larvae live in the ground and prefer moist substrates [...] larvae feeding on root hairs and tender roots as well as stem and leaf tissue and fruits. The lesions caused by feeding larvae provide invasion routes for various [...] flowers in ornamental crops, lettuce, and herbs also causes cosmetic damage, and sometimes this can occur on such a scale that growth, particularly of young