Triệu chứng Basically, all aerial parts of the host tree can be attacked by the olive scale. It is most commonly found encrusted on the bark of trunk, branches and twigs. However, its presence may be denoted by tiny white dots on leaves. On olives, infestations cause deformations and the
Olive Scale
Sâu bọ
Triệu chứng
Basically, all aerial parts of the host tree can be attacked by the olive scale. It is most commonly found encrusted on the bark of trunk, branches and twigs. However, its presence may be denoted by tiny white dots on leaves. On olives, infestations cause deformations and the development of black spots with a gray center around the feeding site. Other fruits (apples and peaches, for example) may exhibit a dark red spot instead. Heavy populations cause leaf wilting, chlorosis and defoliation. Fruit discoloration, premature fruit drop, weakening and dieback of twigs and branches are also common in these conditions.
