• Corn rootworm

  where it is widespread in the maize-growing areas in the north. Maize is the only crop in which high population densities can develop, and consequently [...] This does not usually result in heavy yield losses, but it can facilitate the development of toxic fungi in the cob, with the resulting production of [...] cycle and appearance In Europe, the western corn rootworm produces a single generation each year. The pest overwinters in the soil in the egg stage. Egg

• American serpentine leaf miner

  cosmetic damage. In tropical and subtropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown [...] adult females can also reduce yield, although except with ornamental crops, this is usually of less significance. Seedlings and young plants can be completely [...] eats its way outwards from its egg, so that its mines join to form small plates. In various other crops one finds intermediate forms of tunnelling between

• Trianum-P

  conditions. Trichoderma harzianum T-22 grows in a wide temperature range (10-34°C/50-93°F), at a pH between 4 and 8, in many types of growing media. Storage time [...] a spp. and Microdochium spp. In addition, Trianum-P promotes plant growth and uniformity. Crops Trianum-P can be used in most crops. Mode of action The [...] through the formation of more root hairs, so that water and nutrients can be taken up better. This leads to a stronger and more uniform crop and better yields

• Trial results onion fly and bean seed fly

  After application, the nematodes set out in search of their prey. They can actively hunt! Once they have found a host insect, they penetrate its natural [...] and reproduce in large numbers. The pest insect stops feeding soon after being infested, and dies within a few days. The nematodes that emerge then start [...] plant parasitic nematodes are a common soil pest that affect plants, entomopathogenic nematodes play an important role in the biological control of many

• Flies

  and shore flies are mainly a problem in greenhouses. Their larvae live in the ground and prefer moist substrates that is rich in organic matter. Although [...] and sometimes this can occur on such a scale that growth, particularly of young cuttings, can be retarded. Fly control videos Take a look at the video or [...] are flies? There are several flies that are pests in agriculture, horticulture and mushroom cultivation. Species that can cause damage or nuisance, are p

• Sciarid flies

  larvae can grow to 5 to 12 mm in length and 0.5 to 1.5 mm in diameter. They are legless and have a conspicuous black head. The head is equipped with biti [...] areas in dark places, with a lot of organic material. They occur the whole year round. The eggs are minute (0.1 to 0.25 mm) and yellowish white in colour [...] cultivation where they can cause enormous damage. Sciarid flies are usually found in damp, humid environments, and appear very commonly in greenhouses throughout

• Aphidoletes aphidimyza

  is available in bottle ( Aphidend ). Open the bottle in the greenhouse Place the bottle directly on the soil or rockwool slabs or hang it in-between the [...] optimal conditions for oviposition. Apply Aphidoletes aphidimyza in an environment with a high relative humidity (> 70%) to get the best results. Feeding [...] aphid colony, finding prey for the newly hatched larvae is normally not difficult. When a gall midge larva attacks an aphid, it injects a paralyzing toxin

• Green peach aphid

  is now a pest with a world-wide distribution. The green peach aphid ( Myzus persicae subsp. persicae ) is a particularly polyphagous aphid with summer [...] green peach aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction is asexual [...] is sexual, the aphids lay eggs that overwinter. In greenhouses reproduction also takes place by parthenogenesis, with unfertilized viviparous females

• Shore fly

  causes cosmetic damage, and sometimes this can occur on such a scale that growth, particularly of young cuttings, can be retarded. Life cycle and appearance [...] transmit plant diseases and can be a nuisance to greenhouse works by their sheer numbers. Frass deposited on leaves or flowers in ornamental crops, lettuce [...] of the adult has a pair of conspicuous eyes. The wings have grey-brown patches. Although shore flies can occasionally be confused with sciarid flies ( Bradysia

• Lyprauta

  (family Keroplatidae) have been associated with root damage in potted orchids, especially in greenhouses in the Netherlands. Dutch farmers call these larvae [...] branches. This ultimately results in a reduced number of flower stems and a longer vegetative stage. The root damage can also form entry points for pathogens [...] sp. are a transparent greyish white and have a long slender body. The head is brown or reddish. The pupae are white to yellow and embedded in a dense web