traps ( e.g. Rollertraps or Horiver) is very important for monitoring the flying stages of pests such as whitefly and thrips . For some pests, pheromones
and transfer up to 2,7 times more pollen than honeybees to give growers a flying start to optimal pollination. Advantages of bumblebees in open field In
Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. Wingless females of the large
four longitudinal ribs each. The abdomen is black, with typical triangular white spots below the elytra. When just laid, the oval eggs of the common cockchafer
Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. Wingless females of the rose
All four species cause the growth of galls on the stems, which are first white and later turn brown. Only Rhizobium radiobacter causes galls and tumours
known for their effectiveness in controlling a variety of pests, including flies (i.e fungus gnats ), thrips , beetles , caterpillars , lace bugs and sawflies
discolouration. Life cycle and appearance of Boisduval scale Females are white to light yellow, thin and semi-transparent, approximately 1.2-2.2 mm in diameter
Adults pear psyllas are 2-3 mm long and orange red to blackish. They have white, longitudinal stripes on the back of the thorax. Their forewings are clear