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Forest pathology is the research of both biotic and abiotic maladies affecting the health of a forest ecosystem, primarily fungal pathogens and their insect vectors. [ 1 ] [ 2 ] It is a subfield of forestry and plant pathology .
Many annual plants, or plants grown in frost free areas, can suffer from damage when the air temperature drops below 40 degrees Fahrenheit (4 degrees Celsius). Tropical plants may begin to experience cold damage when the temperature is 42 to 48 °F (5 to 9 °C), symptoms include wilting of the top of the stems and/or leaves, and blackening or ...
Plant Health Care (PHC) is multi-dimensional management strategy for tree and plant care to preserve the vitality of the urban and community forest. [11] Arborists and Plant Health Care Specialists apply a broad range of techniques by selecting and integrating treatment options that protect and enhance the health, structure, and appearance of ...
While Armillaria is a significant and damaging pathogen of tree hosts, it also has many agronomic hosts such as grapevines, berries, roses, stone fruits, rhododendron, and rosaceous plants, although the fungus is primarily native to areas where it can use forest trees as a host. On hosts such as these, infection causes death of the cambium and ...
Some plants (or select parts) require cooking to make them safe for consumption. Field guides instruct foragers to carefully identify species before assuming that any wild plant is edible. Accurate determination ensures edibility and safeguards against potentially fatal poisoning .
Alpine plants often have gray appearance from hairs covering the leaves, which reflect the intense sunlight, and protect from winds that cause high rates of water loss through transpiration. [4]: 224 Many Sierra Nevada alpine plants have reddish or whitish leaves to protect them from damage from intense ultraviolet radiation in the alpine zone.
An ash-dominant forest in decline from emerald ash borer damage. Species which are not native to a forest ecosystem can act as an agent of disturbance, changing forest dynamics as they invade and spread. Invasive insects and pathogens (diseases) are introduced to the United States through international trade, and spread through means of natural ...
Maize plants with severe zinc deficiency in the foreground, with healthier plants (planted at the same time) in the background. Zinc deficiency is common in many different types of soil; some soils (sandy soils, histosols and soils developed from highly weathered parent material) have low total zinc concentrations, and others have low plant-available zinc due to strong zinc sorption ...