Lead content in plants of oats, rye and silage maize cultivated on strongly contaminated fluvisol
2000
Miklovic, D. (Vyskumny Ustav Podoznalectva a Ochrany Pody, Bratislava (Slovak Republic))
In the years 1995-1998 were cultivated oats, rye and silage maize on the soil with overlimited content of lead. There were used three treatments of nutrition and fertilization: b - minimal, c - traditional, d - over-productive dosage. The influence of NPK-fertilization on the bioavailability of lead for cultivated plants in comparison with non-fertilized control (treatment a) was evaluated. There was registered highly significant increasing of cultivated plant yield on all the treatments of fertilization. The content of lead was not influenced by the applicated dosages of NPK-fertilizers both in soil and also in the plants. In spite of relatively high content of lead in the soil (overlapping the given limit more than 11-times) it does not overcome its content in tissues of cultivated plants within the given limits neither in food stuffs nor in feed. The low content of lead was displayed not only in the amounts of its accumulation in plants (0.01 - 0.2%) but also in the amounts of the uptake by yield (oats uptake in average 8.09, rye 8.58 and silage maize 13.28 g lead from hectare)
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