senescence

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senescence

[si′nes·əns]
(biology)
The study of the biological changes related to aging, with special emphasis on plant, animal, and clinical observations which may apply to humans.
(geology)
The part of the erosion cycle at which the stage of old age begins.
References in periodicals archive ?
The main objective of this study was to compare various forms of K, mineralogy, and K adsorption characteristics of some cotton soils from fields that were affected by premature senescence (PS) and normal fields (Non-PS) to gain a better understanding of the K availability in soils in relation to the occurrence of premature senescence in cotton plants.
The results of this study show that the occurrence of premature senescence in cotton plants at most of the studied sites is related to potassium availability in soils.
Premature senescence symptoms occur occasionally at the Narrabri site and it is possible that other factors such as soil compaction, waterlogging, and cool cloudy weather conditions may have caused the PS symptoms at the Narrabri site (Wright 1999).

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