brown. On the underside of the leave fluffy growth appears which is first white and later turns grey-brown. This is actually the sporulation 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…
Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. Wingless females of the…
Fusarium and Sclerotinia and beneficial nematodes , Capirel, against onion fly (Delia Antiqua). The partnership with Koppert also has strengthened his…
activity level gradually drops. At higher temperatures, the bumblebees stop flying. From the moment, the bumblebees will occupy themselves with…
bacterial exudate forms on the underside of the leaf. This exudate changes to a white film when it dries. Lesions may merge as they grow and later…
with the subsequent, active stages. They are transparent and speckled with white dots. The larva of the broad mite ( Polyphagotarsonemus latus )…
limonicus . They are roughly 0.4 mm in length. The eggs are oval, transparent to white in colour and are deposited on the underside of the leaves.…
The larvae are up to 20 mm long, initially whitish and later pale pinkish white, with a brown head and a pale anal plate. The pupa is 8-10 mm long and…
the skin of the host fruit and for laying the egg into the fruit. Eggs are white, 0.6 long and 0.2 mm wide. Each egg has two respiratory tubes which…
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