Eriosoma lanigerum , is a serious worldwide apple pest. It is probably of North American origin and has been distributed to other parts of the world…
population. Large individuals (up to 1.8 mm long) are usually dark green to black, while aphids produced in overcrowded colonies at a high temperature…
The caterpillar passes through 6 instars. It has a green head capsule and a yellowish-green body with a clear yellow longitudinal stripe on either…
Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The…
white with a dark brown band at the outer margin and a characteristic white spot on the forewing, while the other is mostly light brown with a white…
development. After the second instar, a male nymph forms a dark brown ‘prepupa’ from which a pupa rapidly develops, inside a white cottony cocoon.…
and I said to each other when the coronavirus crisis erupted and exports came to a standstill,’ Lex Scheffers recounts. The two partners made a…
for your crop Damage symptoms How to prevent Bacterial soft rot, bacterial stem rot Prevent high humidity Use sanitation to prevent spread within the…
bees Bumblebees have a high capacity to visit more flowers and are able to carry more pollen Bumblebees have a better tolerance to certain…
greenhouse structures Use a crop rotation in field crops of at least two years and alternate with a non-host crop Apply deep-ploughing to stimulate…
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