Isoanths

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Isoanths

 

isophenes that trace the blossoming of a given plant (cherry, lilac, rye) occuring at one time. Plants react sensitively to changes in external conditions, particularly air and soil temperatures; hence, isoanths can graphically demonstrate the coming of spring in a given year. They have practical value in agriculture and forestry.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.