Cotton bollworm

length and have a wingspan of about 40 mm. The grey-green males are smaller. The forewings are edged with a line of black spots, and the hindwings in both [...] General The cotton bollworm ( Helicoverpa armigera ) occurs in the tropics and sub-tropics of all continents except for North America. Larvae of the cotton [...] and a diameter of about 0.5 mm. They are at first a shiny yellowish white, with their colour changing to brown just before the larvae emerge. The cotton

Angular leaf spot

important, but also all types of vascular tissue of the crown can be infected, creating a look similar to that of a Phytophthora fragariae infection. Life cycle [...] limited by the small veins. The distinctive feature is the way the lesions look when using different light sources: when reflected light is used, the lesions [...] t. When conditions are humid, a viscous bacterial exudate forms on the underside of the leaf. This exudate changes to a white film when it dries. Lesions

Mirical

Application Introduce Mirical at the beginning of the growing season and provide Entofood and/or Artefeed as a food source, as the predatory bug population needs [...] thinly (maximum 1 cm thick) to enable the predatory bugs to get out of the carrier material Dosage The dosage of Mirical depends on climate, crop and expected [...] be repeated after 2 weeks. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation.

Damping-off

or substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. [...] later the plants wilt irreversibly. In potted plants the flower buds fall off. The side roots rot and very little of the root system survives. On the border [...] Life cycle and appearance of Damping-off Pythium belongs to the Oomycetes, a separate group of microorganisms and is therefore not a real fungus. It survives

Koppert Foundation

horticulture and agriculture and improvement of the health and availability of food and nutrition for those who need it most. Scope Koppert Foundation focuses [...] Koppert established the Koppert Foundation on their 50 th anniversary in 2017. This Foundation aims to contribute to sustainable solutions for horticulture

Macro-Mite

soil-dwelling insects. The mites appear in and on the soil and at the base of plant stems. The reduction of the infestation level occurs at a slow but steady [...] Pests Eggs, larvae and pupae of sciarid flies ; thrips pupae, Lyprauta larvae. Mode of action The predatory mites feed on larvae of sciarid flies , thrips pupae [...] soon as the first pests are detected in the crop. Introduction rates typically range from 100-500 per m 2 /release. Consult a Koppert advisor or a recognized

Bacterial wilt, brown rot

show signs of wilting during the day which may disappear in the early stages of infection. Under conditions favourable for the bacteria, the whole plant [...] is a plant pathogenic bacterium. It is a soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot in a very wide range of potential [...] s roots on the stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish

False codling moth

laid singly on the surface of the fruit and resemble a saucer-shaped dome. After a few days the eggs hatch and the neonate larvae finds a suitable place [...] fruit and drops to the ground where it pupates in the top layer of the soil. The moths emerge after a couple of weeks. The life cycle varies between 5 weeks [...] and brown as the damage tissue decays. The mature larvae enlarge the hole to leave the fruit and pupate. Excreta can be found within the larvae tunnels

Black sigatoka disease

one month old. The symptoms run parallel to the veins. Within a few days, the spots become a few centimetres in size and turn brown with light grey centres [...] leaves may die within a few weeks. Because of the lack of leaf tissues, fruit maturity is hampered. Life cycle and appearance of Black sigatoka disease [...] conidia. The ascospores are wind-dispersed over longer distances, the conidia are splash-dispersed within the crop. Both types of spores cause the exact same

Swirski-Mite

shake the bottle gently before use Push the centre of the cap to open the dosage hole Sprinkle material on leaves or pour into Diboxes Make sure the material [...] be repeated if necessary. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation. [...] Pests Young larvae of various thrips species and eggs and larvae of whitefly . Crops Do not use in tomato. Mode of action Predatory mites pierce their