Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. Wingless females of the…
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…
many other plants. Life cycle and appearance of Boisduval scale Females are white to light yellow, thin and semi-transparent, approximately 1.2-2.2 mm…
Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. Reproduction of the…
Fusarium and Sclerotinia and beneficial nematodes , Capirel, against onion fly (Delia Antiqua). The partnership with Koppert also has strengthened his…
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…
are 0.3 mm long and have legs, but soon settle to form circular, initially white scales. Circular scales reproduce sexually. Adult females lay 50-150…
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