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Transorganal gradients in the pH values, increasing in the root<stem<leaves direction, were found in a study of the tissue pH of individual organs of sunflower and maize plants. The relationship of these pH gradients to metabolism was established by investigating nitrate reductase activity (NRA) distribution among organs and the excretion of H+ by intact(More)
A study was conducted with sunflower plants (Helianthus annuus, L.) cv. Peredovik in field experiments, one of which included 9 NPK-fertilizer treatments. The intensity of uptake,i.e. the quantity (mg) of nutrient taken up for the accumulation of 1 g dry matter/day, the concentrations of all essential elements in the plant organ tissues and their(More)
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