Sadrzaj azota i fosfora u raznim segmentima lista suncokreta.
1991
Djukic D. | Bojic M. | Miladinovic Z.
The investigated elements, nitrogen and phosphorus, are unequally disposed in some parts of a sunflower lamina, which depends on the age of the analysed plant organ. Nitrogen is rather evenly disposed on a sunflower lamina, but that is not the case with his contents on leaf group (the content is greater in younger leaves). Phosphorus is unevenly disposed on a sunflower lamina. The content of phosphorus is greater in the group of younger leaves. The least concentration values of nitrogen and phosphorus are in leaf nerve, and values simmetrically increase towards the end (left and right) of a lamina.
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