• Show Whitefly a Yellow Card

  August 10, 2021

  are thriving. That's why it's particularly important to show these pests a yellow card! Whitefly and many other insects stand no chance against Horiver sticky

• Two-spotted spider mite

  empty dead cells become yellow, and in many plants the damage can also be seen on the upper surface of leaves as small yellow dots. The destruction of [...] more pointed at the rear. Colour is very variable: from light yellow or orange to dark yellow or brown.The colour of the adults often depends on the crop [...] transpiration and reduced plant growth. As damage increases, whole leaves turn yellow, and as more cell sap is removed, the leaf, and eventually the whole plant

• Cotton leafworm

  3,000 eggs. Each egg is roughly spherical, about 0.6 mm long and whitish yellow. They are laid in clusters of 20 to 500 pieces on lower leaf surfaces, often [...] on the lower parts of the plant. The female covers the eggs with brownish-yellow hairs from her abdomen to make them less conspicuous and to protect them [...] bordered on either side by two yellowish-red or greyish stripes and small yellow dots on each segment. The underside of the caterpillar is greyish-red or

• Glasshouse potato aphid

  piercing by the aphids are visible in lower leaves in the form of yellow patches. Heavy yellowing may even be followed by defoliation. Life cycle Glasshouse potato [...] squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It has a light yellow-green to brown-green colour, and has an overall shiny appearance. Antennae [...] on the abdomen at the base of the cornicles. Alate (winged) females are yellow-green, with a brown head, a dark thorax and a dark abdomen that has pale

• Tobacco whitefly

  irregular ripening in tomatoes and sweet peppers, yellowing of the flower stalks in gerbera, and serious yellowing of the leaves of French beans. Other symptoms [...] symptoms include the appearance of chlorotic patches, yellowing, fruit and leaf fall and misshapen fruit. Life cycle and appearance of Tobacco whitefly The [...] stadia remain flattened on the leaf. The fourth larva stadium develops into a yellow, almost circular so called pupa, in which the red eyes and white wings of

• Apple

  cultivated, each with their own characteristics. Ripe apples usually have a red, yellow, green, pink, or russetted coloured skin. Additionally there exists also [...] yellowish-white coloured exocarp. Sometimes their flesh is also pink or yellow.

• A step-by-step guide to whitefly control

  plant; eggs transition from yellow-green to brown. Fourth instar (pupa) Oval, white case with wax threads. Flat, transparent or yellow, with a visible red-eyed [...] adult. Adults Larger, whiter, triangular appearance from above. Smaller, yellower, elongated appearance with a gap in the wings. Whitefly damage and economic [...] Virus transmission: Particularly damaging, Bemisia tabaci spreads Tomato Yellow Leaf-Curl Virus (TYLCV), severely impacting tomato crops. Greenhouse whiteflies

• Horiver Wetstick

  Wetstick for trapping and monitoring of different flying insects. Pests Yellow: whitefly , thrips , fungus gnats, leaf miners Blue: thrips Black: Tuta [...] Polysterene cards coated with wet sticky glue. Available colours and sizes Yellow: 10x25 cm; 20x25 cm; 25x40 cm Blue: 10x25 cm; 20x25 cm; 25x40 cm Black: [...] absoluta use at least one Horiver Wetstick trap per 100 m 2 Combined use Yellow Horiver Wetstick can be used in combination with Natutec Scout for easy

• Pepino mosaic virus

  green patches) Leaf distortion or bubbling Yellowing or chlorosis On fruits Marbling or uneven ripening Yellow or orange discoloration Necrotic streaks or

• Whitefly

  of whitefly damage: Yellowing of leaves: Whiteflies feed on plant sap, which can cause the leaves of infested plants to turn yellow and eventually drop [...] transmitting harmful viruses. Their feeding weakens plants, causes leaf yellowing and leads to honeydew deposits that reduce crop quality. Effective whitefly [...] rest. Color: As their name suggests, whiteflies are usually white or pale yellow in color. This is due to the wax produced by the adults, which is covering