• Aphids

  times before becoming adult, with the conspicuous white cuticles, shed during each of these moults, betraying their presence in the crop. There are two types [...] also mate in the autumn and lay eggs which overwinter. Where mating occurs and eggs are laid, the life cycle is termed holocyclic (complete). In greenhouses [...] damage to plants in several ways, and the damage can vary depending on the species of aphid and the type of plant being attacked. The following are common

• Feltiella acarisuga

  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 [...] Feltiella acarisuga is available in plastic cups ( Spidend ). Make a hole in the lid and place the cup on the rock wool slab or directly on the soil Protect against [...] biological control. The predatory gall midge Feltiella acarisuga is used for the control of the following pests: Spider mites Some of the common spider mites

• Anagyrus vladimiri

  dimorphism: the female is about 1.5-2 mm in length and brown, with distinctive black and white banded antennae. The male is 0.8 mm in length and black in colour [...] Hang the bottle in the crop, out of direct sunlight Deploy in or near the mealybug colonies Leave bottles in the crop for at least two weeks Carry out [...] Anagyrus vladimiri The parasitic wasp Anagyrus vladimir is available in a bottle ( Citripar ). Remove the label from the bottle according to the instructions

• Pollination checklist tomato

  bumblebee bites onto the flower and makes the flower vibrate. This is known as buzz pollination. The imprints of the bumblebee's jaw on the flower (bite marks) [...] higher temperatures, the bumblebees stop flying. From the moment, the bumblebees will occupy themselves with cooling the hive until the temperature drops [...] are exposed is too high for a lengthy period, the hive and the colony may suffer damage. You should therefore position the bumblebee hive in the coolest spot

• Diglyphus isaea

  Diglyphus isaea The parasitic wasp Diglyphus isaea is available in a bottle ( Miglyphus ). Release parasitic wasps between the leaves of the crop in the morning [...] body, and the third larval instar is blue-green. The full-grown larva usually pupates in the mine some distance from the dead host. Pupal stage: The pupa lies [...] seen in the pillars that remain visible as black spots in the leaf. The adult is metallic green to black in colour and unlike D. sibirica has short antennae

• How to protect bumblebees from heat

  Placing the hive near the ground on the shade of the crop can keep the temperatures inside the hive lower. Shading Providing effective shading to the top and [...] 28°C inside the hive in any environmental conditions. Above 28°C the pollination capacity is reduced as their activity is focused on cooling the hive. Above [...] can be reduced if the humidity is too low or radiation is too high. In conventional greenhouses, the recommended humidity range is 60-75%. Due to better

• Nematodes significantly reduce Tuta larvae

  Zoboli explains. Growing with respect for nature Since the establishment of Società Agricola Gandini Antonio in the 1950s, the company has based its farming [...] criteria that respect the environment and people, and the quality of its product. The company built its first greenhouses in the ‘90s for growing tomatoes [...] ‘Since the arrival of Tuta absoluta in our areas, we have had problems controlling this pest chemically in our tomato crops. The problem got worse with the

• Diamond back moth

  one-third of the forewing is ochreous-white, with a nearly white upper edge. In females, the upper two-thirds of the forewings are light ochreous and the markings [...] mines in the leaf tissue, the larvae are voracious surface feeders. The pupae of the diamond back moth (Plutella xylostella) are covered with a white, loose [...] may occur in the florets. Initially, the pupa is pinkish-white to pinkish-yellow and changes to brown before adult emergence. The adult of the diamond back

• Spidex Vital lives up to its promises

  game changer in spider mite control. It changes the rules of the game and is even more in control of spider mites . And the grower reaps the benefits.’ [...] calm to the farm.’ He states that the weather conditions have been favourable up to now. But, he says, the summer is yet to come. ‘Later on in the season [...] eggs.’ This corresponds with the explanation Sjaak received from consultant Ron Delissen and with what Koppert promised in the leaflet, he tells us. ‘Spidex

• Black vine weevil

  instars. Once the temperature rises, the larvae become active again. The full-grown larvae pupate in spring in the soil. The depth where the pupae can be [...] it assumes whenever it is disturbed. The body is covered with stiff white to light brown, bent hairs. Overwintering occurs in the larval stage, usually [...] October. The larvae that hatch have a white, translucent to pinkish body and a reddish brown head. These larvae live in the root zone in the soil where they