• Fusarium spp.

  system of the host plant and spreads upwards inside the plants. The other species are dispersed upwards on the outside of the plant. Most Fusarium species [...] the leaves turn yellow and wilt, mostly on one side of the plant. Finally, the whole plant wilts. Other symptoms are brown discolouration of the xylem [...] or in small wounds, for example where lateral roots branch off the tap root. F. oxysporum grows inside the roots towards the foot of the plant and enters

• Thrips

  fliers and can move quickly between plants. They are often found on the undersides of leaves, where they feed on plant sap. Damage: Thrips can cause damage [...] fruits by feeding on plant tissue. This can result in distorted growth, discoloration, or scarring. They may also transmit plant viruses. Recognize thrips [...] feed on all aerial parts of the plant and are fairly mobile. Immediately after hatching, the larvae begin to feed on plant tissue on the underside of the

• Black vine weevil

  into corms, 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 [...] polyphagous and feed on a large number of plant species. High populations of larvae can destroy plants under field conditions. Established crops are more [...] more resistant to damage than young plants or just planted cuttings. The adult beetles are only active at night, taking round bites out of the leaves, starting

• Cannabis aphid

  developing on cannabis plants, as well. Damage symptoms The cannabis aphid is a sap sucker, like all aphids , and affected plants are damaged by the loss [...] settle inside buds to feed. Slowed plant growth; wilted, yellowing leaves. Transmission of viral disease between plants, specifically: hemp streak virus [...] of this vital fluid. The following damage symptoms may be observed when plants are infested with Phorodon cannabis : Excess sap is excreted on leaves and

• Shore fly

  In Europe and Asia, the species Scatella stagnalis occurs widely. These small black flies can be found naturally at marshy, muddy lake shores and intertidal [...] feed on algae and their larvae on algae and decaying organic matter on planting substrate. Growers consider shore flies to be mostly a nuisance pest, but [...] and other unicellular organisms, they do not cause any direct damage to plant production. However, they are considered a nuisance pest because the flies

• Aphids

  the sap of plants using their piercing-sucking mouthparts. They damage plants by causing stunting growth, curling leaves, and transmitting plant viruses. [...] host plants in the winter, and those species that do not. Species that alternate between host plants reproduce asexually on their summer host plant, migrating [...] further reduce the plant's ability to photosynthesize and grow. Wilting or death of plant: In severe cases, aphid infestations can cause plants to wilt and die

• Leaf miners

  form the family Agromyzidae. This is a family of small flies whose larvae tunnel into the leaves of plants, creating ‘mines’. There are many species of leaf [...] pests that tunnel through leaves, reducing photosynthesis and weakening plant growth. Their feeding patterns cause visible leaf damage, lower crop quality [...] secondary infections. Effective leaf miner control is essential to protect plant vitality and maintain marketable yields. Biological control of leaf miners

• Canadian Thrips in Greenhouses & Grow Rooms

  September 19, 2024

  ions to the plant's buds, flowers, and young fruit. It feeds on the meristems of the plant's terminals and other tender parts of the plant above the surface [...] most notable are those found feeding on plants. These, 25 or so species, are some of the most devastating plant pests in agriculture. The most well-prominently [...] Vectoring Thrips can cause significant damage to plants indirectly by transmitting viruses. About 64% of known plant viruses are transmitted by insects like aphids

• Rhyzobug

  Adults and larvae feed on all stages of armoured scale insects. Visual effect Small scales are consumed entirely. In larger scales feeding damage is visible [...] Rhyzobug in the evening. Open the cap and tap the beetles directly on the plants. Be aware that adults may not fly away immediately after release. Dosage

• Southern European marshland pyralid

  wide range of hosts from 38 plant families. They include ornamental crop plants, such as roses and gerbera, aquatic plants, vegetable crops such as celery [...] sometimes attacking the stem of the plant as well as the leaves. Late instar larvae burrow into soft woody or herbaceous plant stems causing withering or drying [...] considerably according to the crop: in begonia and kalanchoë a relatively small population can cause severe damage, whereas roses appear to tolerate larger