Cutworms

occasionally tunnel into the growing stalk, disrupting the sap flow in the plant. Life cycle and appearance of Cutworms The adults of Agrotis spp. have pale [...] Important species are for instance the black cutworm Agrotis ipsilon and the turnip moth Agrotis segetum . The larvae of these moths usually feed on roots [...] usually observed as a cutting of young seedlings, often causing death of the cut seedlings. Sometimes wilting is observed because of partial cutting. A larva

Municipality Enschede: Entonem nematodes against oak processionary caterpillar

The Municipality of Enschede started using nematodes for the first time in the spring of 2021 to try to halt the spread of the oak processionary caterpillar [...] caterpillar . The municipality’s built-up area has a total of 22,000 oak trees. In the past, the municipality only extracted the nests. But as Petra Klein Breukink [...] explains, it was not enough. She is the project manager of the oak processionary caterpillar for the Municipality of Enschede. ‘We use Koppert’s nematode

Tomato moth

fruit. The second generation of larvae often causes greater loss of fruit than the first. Life cycle and appearance of Tomato moth The forewings of adult [...] along the posterior edge of the forewing. As in most noctuid moths, the hindwing is greyish and lighter than the forewing, with a darker shadow at the margin [...] margin. The antennae are long and thin. Head and thorax are reddish-brown while the abdomen is a lighter grey-brown. The females of the tomato moth (Lacanobia

Pear psylla

Feeding later in the season may affect the harvest of the next year by weakening or killing fruit buds. Pear psyllas excrete large amounts of honeydew. Sooty [...] They have white, longitudinal stripes on the back of the thorax. Their forewings are clear with dark veins. The eggs are oval, approximately 0.3 mm long [...] stripes and blackish markings on the head and body. Pear psyllas overwinter as adults, sheltering on the bark of pear trees. The adults become active in spring

Nematodes significantly reduce Tuta larvae

‘This is the first year we have applied Steinernema feltiae and after the first cycle of three nematode treatments, we saw a reduction of Tuta in the crop [...] crop of more than 80%. The large infestation which was present was reduced and under control, and the application greatly contributed to the condition of the [...] Since the establishment of Società Agricola Gandini Antonio in the 1950s, the company has based its farming methods on criteria that respect the environment

Western flower thrips

finally the adult insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks [...] disturbed. In the adults both pairs of wings are fully developed. Damage symptoms Thrips cause damage to plants by piercing the cells of the surface tissues [...] causing the surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta indicate their presence in the crop

Crane flies

General The larvae of crane flies , called leatherjackets, live in the soil and feed on roots and shoots (which they pull into the ground of mainly grasses [...] After adults emerge, part of the pupal case can be found sticking out above the soil surface. Adult common crane flies emerge from the soil in late summer to [...] week and then feed on roots and crowns of grasses during the autumn.. Larvae overwinter in the soil, usually in the third instar stage. and start feeding

Municipality Doetinchem: Entonem nematodes managing oak processionary caterpillar

breaching the monocultures of the oak and stimulating the natural enemies of the oak processionary caterpillar. As already stated, the use of nematodes [...] reduce the level of infestation. ‘By using Entonem and extracting the nests as a curative measure, we can keep the situation manageable for now. In the longer [...] oak trees in the forests and plantations around Doetinchem. Marc van Rijswijk is the spokesman for Buha, the implementing organization for the Municipality

Large raspberry aphid

direct feeding damage. The major problem is the spreading of various raspberry viruses by the aphids. Life cycle and appearance of Large raspberry aphid [...] Overwintering eggs of the large raspberry aphid are laid near the base of vegetative canes and hatch in spring. After emerging in spring, the aphids mainly [...] Wingless females of the large raspberry aphid are 2.6-4.1 mm long, pale to yellowish green with long antennae, legs and siphunculi. The cauda is short and

Aphidoletes aphidimyza

predator, as well as the size of the prey. Life cycle of Aphidoletes aphidimyza Growers can recognize the different life stages of the gall midge Aphidoletes [...] starts predigestion of the body contents. The larva then sucks out the body fluids, leaving the dead aphid hanging by its snout from the leaf to turn brown [...] directly on the soil or rockwool slabs or hang it in-between the plants Do not scatter the contents Once emerged, the adult gall-midges will leave the bottle