Definition of dieback in US English:



  • A condition in which a tree or shrub begins to die from the tip of its leaves or roots backward, owing to disease or an unfavorable environment.

    • ‘Heavy populations of large galls, such as the gouty gall, may cause some dieback or limb drop.’
    • ‘Woody plants including gooseberries, raspberries and even roses may suffer from dieback after their leaves wilt and shrivel and change to brown.’
    • ‘The tree seems to be experiencing dieback similar to fire blight.’
    • ‘Where bulbs are naturalized, avoid fertilizing in spring so the quick-growing grass plants don't overshadow the bulb leaves before dieback.’
    • ‘In addition, there are several other diseases (Phomopsis cane and leaf spot, Botrytis gray mold, Eutypa dieback and crown gall) that can also result in economic loss.’
    • ‘The recently dead plants represent the phenomenon of stand dieback, defined as the death of groups of neighboring trees.’
    • ‘Above-ground symptoms include chlorosis and reddening of the leaves, small leaves, defoliation, branch dieback, death of entire canes, stunting, and death of the entire bush.’
    • ‘Natural senescence of even-aged stands can be a factor in dieback of forest trees; an example in the Sonoran Desert is Carnegiea gigantea.’
    • ‘Salinity and soil acidity are growing and dieback from the Phytophera fungus is moving in.’
    • ‘It is important to remember that certain diseases, such as viruses, Eutypa dieback, and crown gall, cannot be directly controlled with pesticides at the present time.’
    • ‘These data suggest that the progressive leaf dieback starting from the stem base, as observed when the inflorescence of sunflower reached maturity, might be due to time-dependent loss of hydraulic conductance.’
    • ‘Care must be taken to avoid the fungal disease eutypa dieback, of which spores may be transferred on pruners, infecting the pruning wounds following large cuts.’
    • ‘This durability in contact with the ground is offset by the crown's vulnerability to dieback from drought.’
    • ‘A mangled cane is a great place for fungal disease spores to hide out, lying in wait to cause problems later or causing cane dieback now.’
    • ‘If this happens, dieback of branches, or of the tree, may occur.’
    • ‘If a shrub develops dieback, prune out infected parts.’
    • ‘Bergeron and Charron associated this phenomenon with the presence of forest tent caterpillar outbreaks, but crown dieback of birch following poor climatic conditions has also been reported.’
    • ‘Sudden signs of dieback could mean the tree is harboring borers; consult a tree-care professional.’
    • ‘Fusicoccum is a fungus which infects blueberry stems causing dieback and plant decline.’
    • ‘The caterpillars of the gypsy moth are destructive defoliators that feed primarily on oak trees causing growth loss, crown dieback, and tree mortality.’