temperatures and water levels in rootzone Avoid overhead irrigation, since it seems to increase disease development Provide balanced nutrition Avoid damage to
stem becomes hollow. Because of the bacterial growth in the pith, the stem seems wet and slimy. Above or below the hollow stem the vascular tissue keeps its
Until now, no bacteria have been isolated from crazy roots. This disease seems to be caused by a change in the hormonal system of the plant resulting from
These leaves are pale-green, then orange-yellow. In the beginning the plant seems to recover at night. The symptoms may occur only in parts of the plant. Cutting
leaves start to dry out and fall off. However, total defoliation does not seem to affect the growth of mature trees. At sites where dead leaves containing
1990s, the idea of growing vegetables without chemicals in southern Spain seemed almost impossible. “ At that time, there was only one solution ,” recalls
from one host plant species to another is still under investigation and seems to depend on the location of the bacteria in the infected plants. For example
