An illustrated guide to the state of health of trees
recognition and interpretation of symptoms and damage
by E. R. Boa
Insect pests and diseases routinely affect the health of trees, and major outbreaks can have catastrophic environmental and economic impacts. The effective management of all tree health problems depends on their early detection. This guide provides 140 photographs of symptoms from more than 50 tree species to be used as a basis for demonstrating the effects of pest (biotic) and non-living (abiotic) influences on trees. It is not an identification guide to insects pests and diseases of trees, but aims to help people make visual assessments of tree health problems and to provide a preliminary diagnosis which will in turn assist in better planning and more effective management of forests and trees.
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An illustrated guide to the state of health of trees: recognition and interpretation of symptoms and damage
2003, Food and Agriculture Organization of the United Nations
in English
9251050201 9789251050200
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Includes bibliographical references (p. 41-45).
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