Definition of dieback in English:



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

    ‘any sign of browning or other discoloration could be the onset of dieback’
    ‘aluminium causes the stress condition of crown dieback’
    ‘a survey of hedgerow trees found a correlation between ash dieback, acidity, and sulphur’
    • ‘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.’
    • ‘Woody plants including gooseberries, raspberries and even roses may suffer from dieback after their leaves wilt and shrivel and change to brown.’
    • ‘Heavy populations of large galls, such as the gouty gall, may cause some dieback or limb drop.’
    • ‘Fusicoccum is a fungus which infects blueberry stems causing dieback and plant decline.’
    • ‘If a shrub develops dieback, prune out infected parts.’
    • ‘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.’
    • ‘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.’
    • ‘This durability in contact with the ground is offset by the crown's vulnerability to dieback from drought.’
    • ‘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 caterpillars of the gypsy moth are destructive defoliators that feed primarily on oak trees causing growth loss, crown dieback, and tree mortality.’
    • ‘Salinity and soil acidity are growing and dieback from the Phytophera fungus is moving in.’
    • ‘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.’
    • ‘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.’
    • ‘Natural senescence of even-aged stands can be a factor in dieback of forest trees; an example in the Sonoran Desert is Carnegiea gigantea.’
    • ‘The recently dead plants represent the phenomenon of stand dieback, defined as the death of groups of neighboring trees.’
    • ‘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.’
    • ‘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.’
    • ‘Sudden signs of dieback could mean the tree is harboring borers; consult a tree-care professional.’