CONTENT OF POTASSIUM AND CALCIUM IN PLANTS OF THE MIDDLE MOUNTAIN DAGESTAN
UDC 631.811 (470.67)
Abstract
The results of a study on the content of potassium and calcium in plants of the Middle Mountain province of Dagestan are presented. The content of macroelements was determined on «Savant AA Σ» atomic absorption spectrometer. The K content in plants varied from 0.16 to 3.21%, Ca - from 0.02 to 3.47%. The content of mobile forms of elements on the northern slope is slightly higher than on the southern (1.2 times). The coefficient of biogeochemical mobility K ranges from 5 to 100.3, Bx Ca – from 1.2 to 204.1. On the southern slope, K and Ca are most actively absorbed from the herb-cereal phytocenoses Plantago media, Plantago lanceolata, Lotus corniculatus, Trifolium medium, Inula britannica, Achillea millefolium, Psephellus daghestanicus, Galium verum, Astragalus onobrychioides, Medicago glutinosa. On the northern slope, K, Ca Astrantia biebersteinii, Inula germanica, Trifolium campestre, Vicia truncatula, Vicia cracca, Betonica macrantha, Origanum vulgare, and Betonica orientalis accumulate most actively. The least accumulation of K and Ca is observed in plants of the Poaceae family. The difference in the content of K and Ca in plants depends on the content of mobile forms of elements in the soil, biological characteristics of plants, and environmental factors.
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