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{{Infobox disease
| Name = Dieback
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'''Dieback''' is a term used in [[botany]] and [[horticulture]] to describe the gradual deterioration and death of a plant or parts of it, typically starting at the tips of the leaves or branches. This condition can affect various types of plants, including [[trees]], [[shrubs]], and [[vines]], and is often a symptom of underlying problems such as disease, pests, environmental stress, or poor cultural practices.

==Causes==
Dieback can be caused by a variety of factors, including:

* [[Pathogens]] such as fungi, bacteria, and viruses. For example, ''[[Phytophthora]]'' spp. are well-known fungal pathogens that cause root and stem dieback.
* [[Insect]] infestations, particularly by species that damage the vascular tissues of plants.
* Environmental stresses such as drought, extreme temperatures, soil compaction, and pollution.
* Nutritional deficiencies or toxicities, often exacerbated by improper soil pH or imbalanced fertilization practices.

==Symptoms==
The symptoms of dieback vary depending on the cause but typically include:

* Browning and wilting of leaves
* Gradual death of branches, starting at the tips
* Reduced growth and vigor
* Dieback of roots, which may not be visible without examining the plant below ground level

==Management==
Management of dieback involves addressing the underlying cause:

* Proper identification of the disease or pest is crucial. This may require laboratory analysis or consultation with a plant pathologist or [[agronomist]].
* Cultural practices such as proper watering, mulching, and pruning can help improve plant health and resistance to stress.
* Chemical controls may be necessary for severe infestations or infections but should be used as a last resort and in accordance with integrated pest management (IPM) principles.

==Prevention==
Preventive measures are key to avoiding dieback:

* Selection of plant species and varieties that are resistant or tolerant to local pests and diseases.
* Ensuring good drainage and avoiding waterlogging to prevent root diseases.
* Maintaining soil health through regular additions of organic matter and appropriate fertilization.
* Monitoring plants regularly for early signs of stress or infestation.

==See also==
* [[Plant pathology]]
* [[Plant disease resistance]]
* [[Integrated pest management]]

[[Category:Plant pathology]]
[[Category:Horticulture and gardening]]
[[Category:Botanical diseases]]

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Dieback - Revision history

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