Triệu chứng Young vines affected and show symptoms of shortened internodes, reduced leaf size and foliage. 3 to 5 year old vine leaves will turn yellow, wilt and eventually drop off prematurely. The roots are reduced and sunken, dark lesions are found on them which can cause wilting and die
Foot Rot
Nấm
Triệu chứng
Young vines affected and show symptoms of shortened internodes, reduced leaf size and foliage. 3 to 5 year old vine leaves will turn yellow, wilt and eventually drop off prematurely. The roots are reduced and sunken, dark lesions are found on them which can cause wilting and die back of the whole plant. Purple discoloration of the root tissue is common. affected vines show reduced vigor with small sized trunks, shortened internodes, uneven wood maturity among others. The pith of affected vines will also show compaction and discoloration. Young vines are affected more rapidly whereas older ones show a more gradual decline. When young vines are attacked, they die very quickly, but as the vines age, infection results in a gradual decline and death may take more than one year occur.
