It is used in vineyards, fruit-farms and gardens to prevent infestations of downy mildew, powdery mildew and other fungi.
Currently there is no cure for phylloxera and unlike other grape diseases such as powdery or downy mildew, there is no chemical control or response.
It has a high tolerance to botrytis but can be very susceptible to powdery and downy mildew.
Publicly-funded work has produced varieties of barley which have resistance to powdery mildew.
The common name, 'whitefly', derives from the presence of secreted powdery wax which is preened over the body and wings by the adults of almost all species.
Expression in powdery mildew infected barley.
Unless soil samples had a dry, 'powdery-like' texture, all samples collected were regarded as 'moist'.
The first genes to be isolated from wheat by map-based cloning include three resistance genes against the fungal diseases powdery mildew and leaf rust.
