Mastering the Battle Against Lawn Pests: White Grubs and Leatherjacket Edition

Black vine weevil

vegetables and fruit crops but reduces the value of ornamental plants. Life cycle and appearance of Black vine weevil The life cycle of the black vine weevil [...] between 2 and 20 cm. Pupae are white to cream coloured and 7 - 10 mm long. Outdoors there is a single generation each year. A population of black vine weevils [...] rhizomes and stem bases of plants. Larvae can also feed above ground within the stems of the plants. Both adult beetles and larvae are polyphagous and feed

Black bean aphid

production. Life cycle and appearance of Black bean aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety [...] each moult they shed white skin, betraying their presence in the crop. The black bean aphid is dark olive green to black with black bands across the back [...] form of honeydew, making the crop and its fruit sticky. Black moulds grow on this honeydew, contaminating fruit and ornamental crops. At the same time

Black leg of seedlings

finger nail. Life cycle and appearance of Black leg of seedlings Pythium belongs to the Oomycetes, a separate group of microorganisms and is therefore not a [...] flower buds fall off. The side roots rot and very little of the root system survives. On the border between air and soil or substrate the plant turns brown [...] immediately after planting. Avoid cold and excessive warm irrigation water. Keep the water content of the substrate below 70% and ensure good drainage Disinfect

Black rot of carrots

both direct and through wounds and stomata. Spores are dispersed by wind and in some species through the splash of rain. How to prevent Black rot of carrots [...] Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the leaves. Survival [...] dry, sunken, black lesions. Typically, Alternaria causes spots on leaves, petals and stems. These spots can be distinguished by the dark and brown concentric

Mealybugs and scales

wingless and immobile, and covered with a hard scale (armoured scales and soft scales) or with waxy threads (mealybugs). They suck the sap of plants and are [...] mealybugs and soft scales also produce honeydew (on which moulds grow) resulting in considerable damage in ornamental and fruit crops and loss of value [...] the crop in various ways: nymphs and females extract the sap from the plant, stunting growth and causing deformation and/or yellowing of leaves, sometimes

Spider mites and other mites

spider mites and other mites Spider mites and other mite species can rapidly infest greenhouse and field crops, feeding on plant cells and causing leaf [...] mottling of leaves (small white or yellow spots), and webbing on leaves and stems. The leaves may also become distorted or curled, and the plant may appear [...] weeds and other plants that may serve as a host for mites, and implementing a rigorous cleaning and disinfection program for all tools, equipment, and surfaces

Cabbage moth

the middle. Head and thorax are grey-brown with white spots, and the abdomen is a pale, greyish brown. The moth flies only at dawn and dusk, hiding in the [...] Life cycle and appearance of Cabbage moth The adult cabbage moth (Mamestra brassicae) has grey-brown to black forewings, with a kidney-shaped white-rimmed [...] initially light and translucent, becoming steadily darker until they are a brown-black or sometimes even a purple colour. They are ridged and have a light

Common asparagus beetle

The elytra have two distinctive rows of white or yellow spots. Eggs are oval and black to greenish brown and laid singly or in rows of 3 to 10 eggs, standing [...] a pupal instar and the adult beetle. Adult common asparagus beetles ( Crioceris asparagi ) have a shiny blue head, black antennae and a red thorax. The [...] perpendicularly on the branches and leaves of the asparagus plants. Larvae are dark grey to whitish, have small black heads and three pairs of stout, light

Mottled arum aphid

ms, Begonia and Fuchsia, and also sweet pepper. Damage symptoms Large colonies of mottled arum aphids can greatly reduce plant vigour and kill the plant [...] green with black cross bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings [...] excellent substrate for the growth of black sooty mould. Large areas of mould covering the leaves can reduce photosynthesis and also result in an unattractive