• Powdery mildew

  January 1, 1970

  infects the plant by entering through the stomata and there are more stomata on the underside of the leaf. On the upper side, yellow spots are noticeable [...] In severe epidemics in cereals, the ears may also be infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because the fungus [...] mostly occur in these crops. In covered roses, the colonies appear first and foremost on the upper side of the leaves. In most crops, the white colonies

• Onion thrips

  January 1, 1970

  develops in six stages: egg, two larval instars, prepupa, pupa, and finally the adult insect. The eggs of the onion thrips (Thrips tabaci) are laid in leaves [...] petals and in the soft parts of stalks. They are inserted into the plant tissue with a saw-like ovipositor. Larvae are light to yellowish green in colour [...] a large head and bright red eyes. The colour of the adult depends on the food source. Onion thrips (Thrips tabaci) usually pupate in the ground, although

• Yellow rose aphid

  January 1, 1970

  usually live in young unfolded leaves. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s [...] honeydew, contaminating fruit and ornamental crops. At the same time, photosynthesis in the leaves is reduced, affecting production. The yellow rose aphid is also [...] skin, betraying their presence in the crop. The yellow rose aphid is holocyclic in North America (i.e. they mate in autumn and produce eggs to overwinter)

• Cabbage leafroller

  January 1, 1970

  rest, the wings are held folded almost horizontally over the body. The antennae are thin and of medium length. The moths fly when it is dark. The yellow [...] light in colour. The ventral surface is lighter than the dorsal, with hairs located in warty spots that are lighter than the general body colour. In general [...] general, the caterpillar has a rather dull appearance. In the fruit of sweet pepper, however, the caterpillars are much lighter and have dark lateral stripes

• Cyclamen mite

  January 1, 1970

  than the females and their hind legs are modified and used to transport pharate females. Eggs of the cyclamen mite are about half the size of the adult [...] mite. They are oval in form, smooth, transparent and twice as long as they are wide. Both ends are equally rounded. The larvae are opaque white and have only [...] mouth parts. The mites are mostly found within the flower buds, growing tips and young folded leaves, where the humidity is highest and they are protected

• Less use of chemical pesticides due to Natutec Scout

  January 1, 1970

  ''This facilitates the rapid identification of trends and shifts in pest and disease development. Of particular note is the utilization of the 'Heatmap' feature [...] Volgering. "Upon inputting all the data into the app, it seamlessly syncs with the computer," the Scout elaborates. "The data is then organized into graphs [...] This allows for the observation of trends in pest pressure, whether they are escalating or diminishing, and offers insights into the most recent developments

• Southern European marshland pyralid

  January 1, 1970

  either within the crop or in another suitable spot in the vicinity. Pupation occurs in a cocoon made of webbing, frass and soil particles. The pupa itself [...] Damage symptoms The caterpillars often stay in the lower strata of the crop, sometimes attacking the stem of the plant as well as the leaves. Late instar [...] feature is the triangle formed by the head and forewings. Moths mainly fly at night, but can sometimes be seen in the daytime. Eggs are laid singly or in groups

• Black vine weevil

  January 1, 1970

  spring in the soil. The depth where the pupae can be found varies between 2 and 20 cm. Pupae are white to cream coloured and 7 - 10 mm long. Outdoors there [...] caused by the feeding of the larvae on the roots. After the roots have been destroyed the larvae move into corms, rhizomes and stem bases of plants. Larvae [...] brownish black and have dull yellow spots on their back. The wing covers are grooved and fused with the body. Therefore, vine weevils cannot fly but can walk very

• Green potted plants

  January 1, 1970

  flowers and ornate red fruits. These plants grow in the shade and need a moist, well-drained, humus-rich soils. Skimmia plants are strong and are tolerant [...] popular ornamental plant and usually sold as houseplant. The leaves of the Dieffenbachia have white spots and specks and turn the plant into a decorative [...] About There are many species of green potted plants, the most common are: Ficus Skimmia come in many varieties and are usually used as garden plants, because

• Spidex Vital FAQ

  January 1, 1970

  What is the difference in the product presentation? Spidex Vital consists of all mobile stages of Phytoseiulus persimilis. The carrier material is the same [...] is exactly the same Phytoseiulus species as in de former Spidex Vital: Phytoseiulus persimilis. When does it turn from white to red? Once the predatory [...] introduce Spidex Vital in the numbers you recommend your customers to obtain the best pest control. Does anything change to the mode of application? No