Calcium as an environmental variable

摘要: Abstract. The chemical state of calcium in the soil and effects, both direct indirect, which this can have on growth distribution plants are considered. Recent advances knowledge refer mainy to interactions (between nitrogen source, aluminium pH, for example) there is now experimental evidence themselves influenced by calcium. impact physical variables less marked than first thought although seasonal effects waterlogging drought be critical. It emphasized that terms ‘calcicole’ ‘calcifuge’ generally acceptable classifying according degree calcareousness soils they occur but only if wider implications appreciated.