• Municipality Venray: biological control of oak processionary caterpillars

  Entonem is that nematodes kill fewer other caterpillars , which means they are less harmful to biodiversity. This is something that is high up on the political [...] positive. ‘The trees that we have treated have been 90% cleared. What is interesting is that avenues running east to west are typically free of oak processionary [...] Municipality of Venray a third of the tree stock in the area, some 11,000 trees, is oak. ‘We’ve been using Koppert’s nematode product Entonem as a curative measure

• Pollination checklist Natupol Fly

  chemical applications on Natupol Fly generally resemble the side effects on bumblebees. For further information on side effects on Natupol Fly, search in [...] es, the fully-grown flies emerge over time, depending on the actual temperature. Natupol Fly is supplied as pupae in cardboard tubes. Use 15 ml of pupae [...] (Bombus spp.). Do not release Natupol Fly without preparation if the temperature is below 15 ˚C. The outcome will be unpredictable and will often take longer

• Black vine weevil

  family Curculionidae. Damage symptoms The major damage is caused by the feeding of the larvae on the roots. After the roots have been destroyed the larvae [...] the soil where they feed on the roots. They are legless, roughly 1 mm long at hatching, but grow to approximately 12 mm. A larva is often curled into the [...] the typical C-shape which it assumes whenever it is disturbed. The body is covered with stiff white to light brown, bent hairs. Overwintering occurs in the

• Integrated Pest Management

  in agriculture is crucial for sustainable farming. It reduces the reliance on chemical pesticides, which can have adverse effects on both crops and the [...] What is IPM? Integrated Pest Management, often referred to as IPM, is a sustainable and environmentally responsible approach to pest management. It employs [...] approach is not just about eliminating pests; it's about achieving a balance in the ecosystem. The principles of IPM Prevention IPM focuses on prevention

• Circular scale

  sub-central point which is sometimes pale. When the scale is lifted, the insect beneath is yellow and up to 1.7 mm long. The adult male is 0.7 mm long and has [...] General The circular scale, Chrysomphalus aonidum is a tropical species, native to the Oriental region but it has been dispersed widely in tropical and [...] countries of its range, it occurs in greenhouses. In addition to citrus, it occurs on many other plants. Damage symptoms Chrysomphalus aonidum has a preference

• Loose smut of wheat

  General Ustilago nuda f.sp. tritici is a basidiomyceteous fungus that affects wheat. It is also known as loose wheat smut, or loose smut of wheat. Damage [...] tritici remains invisible until head emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains [...] only becomes visible after head emergence. The teliospores that are formed on systemically infected seeds then infect neighbouring new seeds. They germinate

• Thrips

  often found on the undersides of leaves, where they feed on plant sap. Damage: Thrips can cause damage to leaves, flowers, and fruits by feeding on plant tissue [...] adults 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 [...] Thrips are small insects (0.5-14 mm), with the largest species found in the tropics. In temperate regions they are not larger than 2.5 mm. All thrips species

• Praon volucre

  volucre Praon volucre is a parasitic wasp that belongs to the family Braconidae and to the subfamily Aphidiinae . Praon volucre is one of the most abundant [...] Praon volucre is used for the control of the following pests: Potato aphid ( Macrosiphum euphorbiae ) The parasitic wasp Praon volucre is available at Koppert [...] the crop. Introduction rates typically range from 0.75-1.5 parasitic wasps per m 2 . This is equivalent to one unit every 250-350 m 2 . The parasitic wasps

• Tobacco aphid

  East and is a key pest of tobacco crops in both the United States and South America. The tobacco aphid ( Myzus persicae subsp. nicotianae ) is also encountered [...] excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew [...] in colour. When reproduction is asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. Aphids

• Pollination

  Pollination is the transfer of pollen from the anthers of the flower to the stigma of the flower. If the pollen is transferred from anther to stigma on the same [...] flower it is called self-pollination. Cross pollination, is the transfer of pollen from the anther of one flower to the stigma of another flower on the same [...] What is pollination? Pollination is an annual challenge for growers when it comes to the production of vegetables, fruit and seed. Well pollinated crops