• Black root rot of cucurbits

  black root rot of cucurbits. Damage symptoms Phomopsis sclerotioides causes grey-black spots with a dark demarcation line on cucumber roots. The lesions [...] Infection in the early stages of the crop results in stunted growth and smaller leaves with an intense green colour. Severe infection in this stage may kill the

• Black vine weevil

  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 destroyed [...] 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 [...] stems of the plants. Both adult beetles and larvae are polyphagous and feed on a large number of plant species. High populations of larvae can destroy plants

• Amblyseius swirskii

  cap to open the dosage hole Sprinkle material on leaves or pour into Diboxes Make sure the material remains on the introduction site for at least a few hours [...] Amblyseius swirskii preys on several other small organisms such as spider mites and tarsonemid mites. They can also feed on pollen, which is useful for [...] of egg, larva, protonymph, deutonymph, and adult. Eggs are laid on the underside of leaves, often in the axil of veins. They are oval, white and are app

• A Growing Success at Welgro Produce

  January 12, 2022

  Gary or Shane will receive an alarm call on their mobile phones to alert them to the problem, before crop damage occurs and cucumber yields are compromised [...] the predatory midge larvae of Aphidoletes ( Aphidend ), which feed on the black aphid Aphis gossypii , and the parasitic wasp, Aphidius colemani ( Aphipar [...] Gary Weldon, Sean Weldon and Shane Halpin from Co. Dublin, Ireland have taken on a whole new challenge. The challenge is a new business venture which involves

• Neoseiulus cucumeris

  distribute Thripex Sprinkle material on leaves or put small heaps on rockwool slabs Make sure the material remains on the introduction site for at least [...] egg, larva, protonymph, deutonymph and adult. Eggs are laid on the underside of leaves on leaf hairs or in the axils of main and side veins. They are oval [...] Neoseiulus cucumeris preys on several other small organisms such as spider mites and tarsonemid mites. They also feed on pollen, which is useful for instance

• Poinsettia. Main pest pressures

  May 21, 2019

  usually cause little real damage, their scales and white waxy deposits are, unfortunately, highly visible on the undersides of the leaves, which can result in [...] known as fungus gnats, can cause serious damage to the cuttings, to the extent of killing them. The larvae feed on the young roots of the plants, and can [...] cuttings can form roots without being damaged, and after 14 days the roots should be sufficiently mature to avoid damage Whitefly The glasshouse whitefly,

• Neoseiulus californicus

  open the dosage hole Carefully sprinkle material on leaves Make sure the material remains on the leaves for at least a few hours after introduction Can [...] adult females feed on all stages of Two-spotted spider mite (Tetranychus urticae) whereas the larvae feed mainly on eggs, and the nymphs on eggs, larvae and [...] present it will preferentially feed on them and the population development is much faster on a diet of spider mites than on other food sources. They can also

• Transeius montdorensis

  open the dosage hole Carefully sprinkle material on leaves Make sure the material remains on the leaves for at least a few hours after introduction Can [...] actively seek out and prey on young larvae of various thrips species and whitefly eggs and larvae. The predatory mite also has an effect on all stages of non-webbing [...] cardboard strip at the top, to avoid damaging the predatory mites The dosage of Montdo-Mite Plus and Montdo Ulti-Mite depends on climate, crop and pest density

• Phytoseiulus persimilis

  register volatiles emitted by damaged plants. Phytoseiid mites have no eyes and therefore rely on volatiles released by damaged plants and their tactile sense [...] cap to open the dosage hole Sprinkle material on leaves or pour into Diboxes Make sure the material remains on the introduction site for at least a few hours [...] mites actively seek out and prey on the Two-spotted spider mite (Tetranychus urticae) . The predatory mite cannot feed on other prey. Feeding behaviour of

• Brown soft scale

  such as schefflera, ficus, hibiscus, oleander, palms, ferns and orchids. Damage symptoms The scales produce enormous quantities of honeydew. This is usually [...] honeydew also quickly becomes infected by sooty moulds which can cover the leaves, flowers and fruit of the host and reduce photosynthesis and respiration