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Diamond back moth

other regions. Damage symptoms The caterpillar is a surface feeder. They feed from the lower leaf surface, leaving the wax layer on the upper surface intact [...] patches. The larva has five pairs of prolegs; one pair of prolegs protrudes from the posterior end, forming a distinctive 'V' shape. Throughout their development [...] the apex. The tips of the wings appear to turn upward slightly when viewed from the side. In males, the upper two-thirds of the forewings are dark, sometimes

Downy mildew of rose

nutrients from the living plant cells. The pathogens continue to grow inside the leaves and after a while new spore-bearing structures are protruding from the [...] grey-brown. This is, in fact, the sporulation of the pathogens extruding from the stomata. In lettuce, the foot is infected first and this causes the plant [...] Oomycetes and related to Pythium and Phytophthora . They survive as oospores. From these oospores or surviving mycelium sporangia are formed, structures in

Phytophthora blight

water. Infection is usually from the root to the foot, but direct infection of the foot also occurs. Exudates leaking from growing root tips promote g [...] cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures which infect the host. Zoospores are spores [...] Dispersal is by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal in the soil happens via water, since the zoospores

Attracker

Attracker lures thrips from their shelter places and improves their exposure to insecticide sprays resulting in better control. Crops All crops. Mode of [...] of action Attracker is a solution of several sugars which lures thrips from their shelter places. When adding Attracker to an insecticide spray solution

Eretmocerus eremicus

preventively soon after planting of the crop. Introduction rates typically range from 1-10 per m2/release. Releases should be repeated at least 3 times at weekly [...] immature whitefly nymphs, and upon hatching, the larvae consume the host from within. The larvae use their specialized mouthparts to feed on the internal