• Cabbage leafroller

  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, the caterpillar [...] also bore into the plant: young caterpillars eat a path from an opening bud to the growing tip, while older caterpillars eat a hole in the shoot and hollow [...] forming a “V” when at rest. At rest, the wings are held folded almost horizontally over the body. The antennae are thin and of medium length. The moths fly

• Tomato leaf miner

  one hour the larva crawls out of the leaf and falls to the ground. This occurs in the early morning. The larva crawls into the ground to pupate. A small [...] percentage of the larvae remain hanging on the leaf and pupate there, sometimes on the upper surface but more commonly on the underside. The late third instar [...] older larvae have a yellow head. When the larva hatches from the egg, it begins to eat into the leaf at once, tunnelling down into the mesophyll tissue

• Stable fly

  congregate on the legs of livestock to feed, and the population size can be assessed by counting the number of Stomoxys on the animals’ front legs. The flies become [...] protrude from the front of the head. Additionally, Stomoxys flies will rest on surfaces in a characteristic head-upward position. Like the house fly, females [...] Stable flies belong to the genus Stomoxys , Latin for “sharp mouth”; a fitting moniker, as these flies are the only members of the Muscidae family that feed

• Cotton aphid

  hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season, the death of [...] and kalanchoe. The cotton aphid ( Aphis gossypii ) is distributed throughout the world but prefers the warmer regions. It has been a pest in European [...] transmit more than 50 different viruses, including the cucumber mosaic virus. Nymphs and adults extract nutrients from the plant and disturb the balance of

• Predatory Mites: Should I Order Bottles or Sachets?

  May 31, 2024

  amounts of money and a decrease in pest protection? We get a lot of questions asking: What formulation a customer should use? What is a predatory mite breeder [...] breeder sachet is a small climate resistant packet containing a predatory mite, a feeder mite (for the predatory mite to feed on), and a carrier, such as [...] will hatch below a RH (relative humidity) rate of 63%. This drastically decreases the chance of a second generation from developing on the plant, as most

• Impatiens thrips

  to plants by piercing the cells of the surface tissues and sucking out their contents, causing the surrounding tissue to die. The resulting silver-grey [...] occurs on the leaf rather than on the ground. The prepupae and pupae remain immobile on the leaf tissue. Adults are found on both upper- and undersides of the [...] spread to many countries within the last 30 years. The thrips have mostly been able to spread as a consequence of the trade in foliage plants. Impatiens

• Feltiella acarisuga

  available in a bottle ( Spidend ). Open the bottle and position it straight in the crop (on the slab or directly on the ground). Make sure the bottle does not fall [...] so that the pupae are not dispersed. Leave the cap next to the bottle so that the wasps can feed on the sugar water in the felt inside it. The wasps will [...] after emerging from the egg, the larva is yellowish white. The eggs and the first larval stages are very difficult to find in the crop due to their small

• Plant Pollinator interactions in high temperatures

  50-55%), the pollen is too dry and does not stick to the stigma. At high humidity, the pollen sticks to the stamen and does not fall onto the stigma. In [...] protection, the plant aborts the fruit to reduce fruit load on the plant and directs the assimilates to the vegetative growth of the plant. This is undesirable [...] strong, and the climate in the greenhouse is consistent. No easy feat, but the payback is more than worth the effort. Relative Humidity The second guideline

• 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 [...] found between the inside of a plant pot and its contents, under lumps of e, in vegetation and under planks etc . In temperate climates, the small (0.7 mm [...] are laid from the beginning of July until around the end of October. The larvae that hatch have a white, translucent to pinkish body and a reddish brown

• Tomato russet mite

  Damage is caused by the mites sucking out the contents of plant cells. Affected leaves are slightly curled and acquire a silvery sheen on the underside. Later [...] and affected leaves dry out quickly. The damage is first seen on the lower part of the plant and moves upwards as the mites ascend. Life cycle and appearance [...] appears to be divided into two parts: the head with the mouthparts, and the rest of the body. All mobile stages have only two pairs of legs, whereas other mite