potato aphid and is particularly visible in the nymphs. Immatures have a light dusting of whitish-grey wax. The aphids instantly fall off the plant when
peach aphids (Myzus persicae subsp. persicae ) may be green, white-green, light yellow-green, grey-green, pink or red in colour. They appear matt, never
before it can be visually detected in the field. Leaf symptoms Yellowish to light-green oil spots on the upper leaf surface, often angular and limited by leaf
Significant losses occur in soils infested by the pathogen, which have a light texture and humidity close to field capacity. In the southern USA, losses
y. The fungus sporulates on root, leaf, and petiole lesions. Continuous light is best for in vitro sporulation. Spore germination in vitro requires free
a strong photokinetic response, i.e. the female is strongly attracted to light and is inactive in darkness.
always shorter than 20% of body length. They produce little wax, so that the light yellow to pink body is visible through its waxy covering. There is often
lesions occur on the underside of the leaves. These lesions start out in a light-brown colour, turning to dark-brown or necrosis. Fruits of infected trees
as long as the wings, is equipped with an ovipositor, and is black, with light brown legs.
supply has been absent for some time, they become thinner and a uniformly light transparent colour. Best conditions for use of Neoseiulus californicus Neoseiulus
