• Grape mealy bug

  to severe infestation of mealy bugs. Feeding damage in grapes is minimal but the marketability is greatly affected due to its cottony egg mass, honey dew [...] bugs are found in crevices of stem, on leaves and berries. Mealy bugs are pinkish and covered with white mealy wax. Female lays 300-500 eggs in loose cottony [...] are orange in colour. First instar nymphs also called as crawlers are mobile, start sucking the plant sap and form colonies and are orange in colour. Female

• Tobacco whitefly

  after emerging. The insect is covered with a white waxy substance. The adult of the tobacco whitefly ( Bemisia tabaci ) closely resembles the greenhouse whitefly [...] tobacco in Greece in 1889, hence the name tabaci . It has subsequently been found in most tropical and subtropical countries of the world. The original [...] which the red eyes and white wings of the adult are already clearly visible. These pupae are found on the oldest leaves. The adult emerges from the pupa via

• Crazy roots, hairy roots, crown gall

  not yet been defined. The assumption is that the bacteria survive in the soil, but it is possible that first infection is from the propagation material [...] Adjust the work order in greenhouses to fit with the hygiene protocol Disinfect the nutrient solution in order to prevent biofilm growth inside the irrigation [...] infection is characterized by excessive root growth (crazy roots). In greenhouse vegetables, the roots overgrow the substrate and in severe epidemics the drippers

• Broad mite

  General The broad mite (Polyphagotarsonemus latus) occurs in the tropics and in greenhouses in temperate regions. The broad mite (Polyphagotarsonemus latus) [...] (about 0.07 mm) compared with the subsequent, active stages. They are transparent and speckled with white dots. The larva of the broad mite ( Polyphagotarsonemus [...] to the damage caused by viruses. The typical pattern of damage consists of malformation and distortion of the above-ground growth of the plant. The mites

• Horiver Wetstick

  suzukii White: Lygus spp. Green: Echinothrips americanus Mode of action Insect pests are attracted to the colour of the sticky trap and get caught in the glue [...] cm: 22 pieces 25x40 cm: 12 pieces Outer cards with glue at one side only Application Place traps in areas with high risk of pest infestation such as areas [...] wires or sticks at max. 30 cm above the crop and adjust height when plants are growing Do not place traps in-between the plants as parasitic wasps will then

• Dwarf bunt

  teliospores in the soil or on seed. The soil-borne teliospores are the main source of primary infection. The soil-borne teliospores may survive in soil without [...] sporidia infect the wheat seedlings even before emergence and the fungi grow inside the plants to the growing tip. The fungi grow between the plant cells and [...] General Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats, as

• Cabbage

  various cultivars of Brassica oleracea ) is a biennial plant with green, white or purple leaves. This plant is usually grown as an annual vegetable crop [...] crop for consumption. Cabbage heads come in various sizes and their weight usually varies between 0.5 to 4 kilograms (or 1-9 lbs).

• Angular leaf spot

  overwinters in plants and dead leaves, that become the primary source of infection in the spring. The bacteria are also introduced in a crop in new transplants [...] underside of the leaf. They enlarge to angular spots, often limited by the small veins. The distinctive feature is the way the lesions look when using different [...] This bacterium is very resistant to desiccation and can survive well in dry leaves or leaves in the soil, but not independantly in the soil. Under humid

• Horiver Rollertrap

  Insect pests are attracted to the colour of the sticky trap and get caught in the glue. Presentation Polyethylene ribbon coated with wet sticky glue. Available [...] hung above the crop when the crop is still low Attach the Rollertrap to crop wires, greenhouse poles, or other supportive structures Place the Rollertrap [...] through the center opening of the roll which will allow the Rollertrap to spin freely while unrolling At the beginning and end of each run, cut the trap

• Cutworms

  dark marginal stripe. The wingspan is about 40-55 mm and the dorsal thorax is covered with close-lying hairs. The eggs are white at first but rapidly turn [...] and hide in the ground during the day. Damage from these instars is usually observed as a cutting of young seedlings, often causing death of the cut seedlings [...] will occasionally tunnel into the growing stalk, disrupting the sap flow in the plant. Life cycle and appearance of Cutworms The adults of Agrotis spp. have