Cabbage moth

with white spots, and the abdomen is a pale, greyish brown. The moth flies only at dawn and dusk, hiding in the crop during the day. Several days after [...] from their pupae the female moths lay clusters of 20 to 100 eggs on the underside of leaves or elsewhere within the greenhouse structure. The eggs are initially [...] instar larvae of the cabbage moth (Mamestra brassicae) are gregarious, eating the edge of the leaves on which they were laid. From the third instar onwards

Common cockchafer

years for the larvae to fully develop. The grubs are 10 to 20 mm in the first autumn, 30 to 35 mm by the following autumn, and 40 to 46 mm in the spring of [...] General The cockchafer ( Melolontha melolontha) , also known as the doodlebug or May bug is a European beetle of the genus Melolontha, in the family S [...] longitudinal ribs each. The abdomen is black, with typical triangular white spots below the elytra. When just laid, the oval eggs of the common cockchafer (

Black vine weevil

It belongs to the family Curculionidae. Damage symptoms The major damage is caused by the feeding of the larvae on the roots. After the roots have been [...] temperate climates, the small (0.7 mm diameter), spherical white eggs are laid from the beginning of July until around the end of October. The larvae that hatch [...] Overwintering occurs in the larval stage, usually as medium sized instars. Once the temperature rises, the larvae become active again. The full-grown larvae

Leaf miners

lost before the harvest is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the species of host plant and the species of [...] belong to the order Diptera (the true flies ) and form the family Agromyzidae. This is a family of small flies whose larvae tunnel into the leaves of plants [...] parts of the world. Under natural conditions, the larvae of these species are parasitized by parasitic wasps and so cause few problems. However, the use of

Tomato looper

Older instars eat through the leaves, which make them appear skeletonized. The last two instars may eat the entire leaf except for the midrib or other large [...] white marks on the forewing that sometimes overlap each other. The hindwings are brown. The body is brown and hairy and, when at rest, the hairy dorsal plume [...] prolegs, instead of the normal five and therefore the caterpillar moves with the same looping motion as an inchworm (geometrid). The cocoon is usually attached

Tobacco aphid

on the abdomen and several transverse black bands across the body. The antennae are 0.7-1.0 times the body length, reaching to the siphunculi. The body [...] of dispersing through the crop by walking. The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid [...] from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation

Red palm weevil

morphology of the palms, direct or indirect destruction of the apical bud will lead to the death of the plant, which makes the red palm weevil ( Rhynchophorus [...] weevil The adults of the red palm weevil ( Rhynchophorus ferrugineus ) are typical weevils: the head extends with a long thin rostrum that holds the antennae [...] larvae migrate to the periphery of the palms to build a solid elongated cocoon made of rolled-up palm fibres. After the cocoon is formed the larva enters a

Acadian

thoroughly mix ACADIAN® Liquid Seaweed Concentrate with the water in the tank prior to adding the calcium product. If interaction of chemicals is unknown [...] thoroughly mix ACADIAN® Liquid Seaweed Concentrate with the water in the tank prior to adding the calcium product. If interaction of chemicals is unknown [...] required with acidic mixtures. Add surfactants after the product has completely dissolved in the tank solution. When mixing with calcium products, thoroughly

Garden chafer

General The garden chafer ( Phyllopertha horticola ) is a beetle from the Scarabaeidae family. It does most of its damage in the larval stage when it feeds [...] feeds on roots of grasses and clover. The adults feed on the leaves of trees like oak, hazelnut and birch and on the flowers and developing fruits of, for [...] cherries. Damage symptoms The garden chafer ( Phyllopertha horticola ) does most of its damage in the larval stage when it feeds on the roots. First instar larvae

Citrus mealybug

distance over the plant. The male nymph attaches itself to the plant, whereas the females remain mobile throughout their entire development. After the second [...] growing on this honeydew. Additionally, the white, waxy secretion of the mealybugs, reduces the ornamental value of the affected plants. Fruit and flowers are [...] composed of white waxy threads. Once the eggs are laid, the female shrivels up and dies. The first instar nymph develops from the egg. These first instar nymphs