• Oleander scale

  Scale infestation can be seen by the appearance of the scale armour on stems, leaves and fruits of hosts. Infestations on the leaves and stems may cause wilting [...] wilting and may reduce the photosynthetic area of the plants, leading to lower yield. Damage to fruit occurs in heavy infestations, where spotting and often [...] deformity of fruits affects market value. In olives this is seen as green spots on purple fruits. Damage to foliage is particularly important in ornamentals

• Strawberry aphid

  fragaefolii is one of the most serious pests affecting strawberry plants. Direct damage is caused by the aphids sucking sap from the plant, which reduces [...] grow on the honeydew. The strawberry aphid is an important vector of several plant viruses affecting strawberries. Life cycle and appearance of Strawberry [...] reduces the yield and quality of fruit. The leaves do not become distorted but leaves and fruits quickly become sticky due to the honeydew the aphids excrete

• Garden chafer

  General The garden chafer ( Phyllopertha horticola ) is a beetle from the Scarabaeidae family. It does most of its damage in the larval stage when it feeds [...] on roots of grasses and clover. The adults feed on the leaves of trees like oak, hazelnut and birch and on the flowers and developing fruits of, for instance [...] than young plants or recently planted cuttings. The beetles are only active at night, taking round bites out of the leaves, starting from the edge. This

• Amblyseius swirskii

  underside of leaves, often in the axil of veins. They are oval, white and are approximately 0.14 mm in diameter. The larvae have six legs, are the same colour [...] also feed on pollen, which is useful for instance in sweet pepper crops as the predatory mite can establish in the crop before the pest appears. Amblyseius [...] search for food on the underside of leaves. They often congregate in the axils of leaf veins to rest. Their colour can vary according to the prey eaten, and

• Neoseiulus cucumeris

  which is useful for instance in sweet pepper crops as the predatory mite can establish itself in the crop before the pest appears. The success of predatory [...] cucumeris is also available in breeding sachets ( Thripex-Plus ). In this case the predatory mites multiply in the sachet and disperse into the crop over [...] cucumeris is used for the control of the following pests: Thrips Neoseiulus cucumeris mites actively seek out and prey on the first instar larvae of various

• Southern European marshland pyralid

  caterpillars often stay in the lower strata of the crop, sometimes attacking the stem of the plant as well as the leaves. Late instar larvae burrow into soft [...] line on the forewing. The end of the remarkably long abdomen bends upward almost vertically, with the abdomen of males often being longer than that of females [...] singly or in groups of 5 to 10 eggs, overlapping in a tile-like fashion on both the upper and lower surface of leaves close to the veins, or low on the stem

• Entonem keeps young orchids free from fungus gnats

  Floricultura is a big name in the international orchid market. The company produces young plants of the Phalaenopsis, Cymbidium, Cambria, and Miltonia [...] our use of biological plant protection, with a strong emphasis on prevention. The more pests we can keep out of the young plants, the better.’ Perfect [...] for the first five weeks. In the interim, the crop is treated with a bacterial preparation. Internal cultivation adviser Jan Mulder explains, ‘It is essential

• Neoseiulus californicus

  persimilis in the complete absence of food, remaining in the crop to await the arrival of new prey. Life cycle of Neoseiulus californicus The developmental [...] white colour. In many cases the colour of the food ingested shines through the skin and shows up as an X-shaped marking on the back. If the food supply has [...] white in colour and are deposited on the underside of the leaves. They are smaller than those of Phytoseiulus persimilis but similar to eggs of other predatory

• Loose smut of wheat

  appearance of Loose smut of wheat The seeds are infected during flowering and the infected seeds are the primary source of inoculum in the next crop. The fungus [...] survives inside the seed and when the seed germinates, the mycelium of the fungus grows upwards inside the plant into the growing tip and the seed primordia [...] until head emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains a mass of olive-brown smut

• Trianum effectively controls Pythium in cucumber

  initially, but the continuous developments in technology have gradually shifted my focus in terms of plant protection to biological methods. That’s why I now [...] hours of light a day, which means it requires a lot of water. That larger quantity of water makes the plant more susceptible to Pythium. That’s why I needed [...] farm covering over six hectares along Hoefslag road in the Dutch village of Pijnacker. Built in 2011, the farm has two sections. Hendriks grows high-wire (two