In the context of demographic increase and climate change, issue ensuring food security is becoming increasingly important, which why use chemical fertilizers in agriculture main means increasing quantity quality agricultural production. Alongside basic mineral (root) fertilization, indispensable, foliar fertilization a measure both terms yields quality. Foliar provide surplus fertilizing eleme...

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Relationships of foliar carbon isotope composition (δ(13)C) with foliar C, N, P, K, Ca, Mg contents and their ratios of 219 C3 species leaf samples, obtained in August in 2004 to 2007 from 82 high altitude grassland sites on the Qinghai-Tibet Plateau China, were examined. This was done with reference to the proposition that foliar δ(13)C increases with altitude and separately for the life-form ...