• Black vine weevil

  appearance of Black vine weevil The life cycle of the black vine weevil consists of an egg, 6 or 7 larval instars, a pupal instar and the adult beetle. [...] 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 [...] on their back. The wing covers are grooved and fused with the body. Therefore, vine weevils cannot fly but can walk very well. They are strictly nocturnal;

• Pepper weevil

  When they are already present on the crop, the best approach is to monitor them during the cooler parts of the day, as this is when they are most active. [...] Damage symptoms The most significant damage occurs with the loss of fruit, whether they fall to the ground or contain holes where eggs are laid or adults [...] you see fruit on the ground, it is clear that the crop has been very severely damaged. Lifecycle and appearance of the pepper weevil Newly hatched adults

• Beneficial nematodes

  productivity. The most common types of plant-parasitic nematode are root-knot nematodes, cyst nematodes, lesion nematodes, spiral nematodes and dagger nematodes [...] a : These nematodes are particularly effective against soil-dwelling insects like Japanese beetle , white grubs, and root weevils . They are used in turfgrass [...] types of nematodes are parasitic nematodes. More specifically insect-parasitic nematodes and plant-parasitic nematodes. Insect-parasitic nematodes Insect

• 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 [...] not enough. She is the project manager of the oak processionary caterpillar for the Municipality of Enschede. ‘We use Koppert’s nematode product Entonem in

• Black bean aphid

  presence in the crop. The black bean aphid is dark olive green to black with black bands across the back. The two cornicles (or siphunculi) are short and [...] usually at the younger parts of the plant but can spread all over the plant. Nymphs and adults extract nutrients from the plant and disturb the balance of [...] As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season, the death of young

• Black rot of carrots

  spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant [...] infection of the leaves. Survival can be several years, in the case of black rot of carrots ( Alternaria radicina ) up to 8 years. Damage symptoms Black rot of [...] seed-transferred carrot disease. The seeds are the main source of primary infection and this may lead to death of seedlings. From the primary infection of leaves

• Black leg of seedlings

  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 [...] enable the spores to move through water. The zoospores are chemically drawn to the growing roots of young plants and move towards them through the soil water [...] older plants, the leaves lose their turgor or the leaf tips turn yellow, for example in flower bulbs. At first, the plants recover during the night, but later

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

  April 25, 2024

  days. The offspring of the nematodes then feed on the deceased grubs. Application and Timing For control against white grubs, it is best to apply the Larvanem [...] white grubs are often targeted with nematode applications. However, applying during the spring poses a challenge for the nematodes as the white grubs have [...] over the winter (3rd instar), making it more difficult for the nematodes to effectively penetrate. By treating later in the season, you target the 1st instar

• Caterpillar control with nematodes

  tenuis. How nematodes control caterpillars Beneficial nematodes are an effective tool to control caterpillars . After application, the nematodes search for [...] skin. The nematodes then release the pathogenic bacteria they carry with them. These bacteria kill the insect and digest it from the inside. The nematodes [...] Control caterpillars with beneficial nematodes Beneficial nematodes or entomopathogenic nematodes are mainly known for the biological control of soil pests

• Limonica strong contender against persistent thrips

  August 5, 2025

  pressure on thrips populations before they peak. The potential of Limonica against other thrips Although most data currently focuses on T. parvispinus and [...] and S. dorsalis , Limonica ’s biology suggests potential effectiveness against: Dichromothrips corbetti (Vanda thrips ) Chaetanaphothrips orchidii (anthurium [...] global trade Further trials are needed to confirm its efficacy across different crops and climates. Strengths and considerations “What makes Limonica stand out