• Root rot of carrot

  foliage. The infection starts with small black spots over the entire surface of the carrot. These spots gradually change into larger dark brown to black lesions [...] lesions of various shapes. The lesions can merge and eventually cover the entire surface of the carrot. The affected areas are firm, shallow, and clearly [...] develop on the surface. Initially, the disease forms circular to irregular spots on the leaves that vary in colour from grey to almost black. The spots appear

• Aphids

  control Learn more about What are aphids? Aphids are small, soft-bodied insects that belong to the superfamily Aphidoidea. There are over 4,000 species of [...] in several ways, and the damage can vary depending on the species of aphid and the type of plant being attacked. The following are common signs of aphid [...] aphids Aphids are among the most harmful pests in greenhouse and field crops, causing plant stress, virus transmission and yield loss. Effective aphid control

• A life-long commitment to help growers thrive with sustainable growing practice

  December 10, 2024

  vital role during the introduction and rollout.’ Making biocontrol the norm In the Netherlands, the use of biocontrol has become the norm when it comes [...] mite effectively.’ Phytoseiulus persimilis Preparing for the future ‘The future holds many challenges and one of them is the severe reduction in the use [...] strategies in horticulture. We have the most experienced consultants in the industry with years of practice in the field. We know our natural products

• Cutworms

  Agrotis spp.) are occurring worldwide. Important species are for instance the black cutworm Agrotis ipsilon and the turnip moth Agrotis segetum . The larvae of [...] rapidly turn darker. They are laid separately or in batches on the ground, or on the plant close to ground level. The larvae are yellowish when hatching with [...] will 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

• Enermix

  carefully inside the greenhouse Bend and tear off the strips opposite to the mounting hole Make sure not to touch the pupae during handling Suspend the cards in [...] larvae of the whitefly . Host feeding also takes place. Visual effect Trialeurodes vaporariorum pupae parasitized by Encarsia formosa turn black, Bemisia [...] in the crop, if possible approximately 75 cm under the plant head Avoid hanging cards at places exposed to direct sunlight Dosage The dosage of Enermix

• Do you think you have Cannabis Pests?

  June 27, 2024

  can be a nuisance and are easily spotted in the crop when working in your growing medium. They are 1-5mm long, are greyish-black, and have two long antennae [...] check the soil, stems, and leaves, while performing “leaf flips.” These leaf flips are important, as most pest infestations begin to develop on the undersides [...] caused by the flowering photoperiod that occurs in the flowering stage of the cannabis production cycle. This stage triggers a portion of the population

• Tobacco aphid

  although they are also capable of dispersing through the crop by walking. The tobacco aphid tends to form denser colonies, closer to the top of the plant, than [...] brown-black head and thorax and a reddish abdomen. There is a dark brown spot on the abdomen and several transverse black bands across the body. The antennae [...] 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

• Maximize pollination in tomato

  grasp onto the flower and generate vibrations, aiding in the transfer of pollen. Within one to four hours, the bumblebee's jaw imprints on the flower, commonly [...] and access the hive. Moreover, ensure that the hive is placed horizontally for optimal functioning. Protection against elements Protecting the hive from [...] its efficiency. Shielding the hive against condensation and rainwater will help prevent damage and ensure the well-being of the bumblebee colony. Proper

• Common asparagus beetle

  Common asparagus beetle The life cycle of the asparagus beetle has the following stages: egg, 4 larval instars, a pupal instar and the adult beetle. Adult [...] shiny blue head, black antennae and a red thorax. The elytra have two distinctive rows of white or yellow spots. Eggs are oval and black to greenish brown [...] standing 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

• Diglyphus isaea

  Adult stage: The appearance of the adult is already clearly visible. Pupae are often visible through the leaf. The parasitic wasp escapes from the mine by making [...] Liriomyza trifolii ). The female wasp deposits her eggs inside the larvae of the leafminer, where the emerging larvae feed on the host’s internal tissues [...] body, and the third larval instar is blue-green. The full-grown larva usually pupates in the mine some distance from the dead host. Pupal stage: The pupa lies