The content and uptake of microelements by oat fertilized with composts of different origin in view of its fodder value and environmental impact
2005
Gondek, K. | Filipek-Mazur, B.
Waste materials, even after their refinement, should be checked for their environmental impact, including that on plants and soil. Therefore, this study was aimed at presenting changes in selected microelements content in oat cultivated in soil with compost supplements concerning the fodder value of obtained biomass. The study revealed alarmingly low content of copper in nearly all fractions of the oat yield. Low copper content decreases the plant fodder value but may also indirectly affect the amount of plant yield. No expected accumulation of zinc, manganese or iron was found in plants cultivated in soil fertilized with mineral fertilizers in relation to plants from other treatments. This may be explained by dilution effect considering a much larger plant yield obtained in this treatment. A problem of iron deficiency in grain and straw may have a physiological background connected with difficulties in its transport from the root system to aboveground organs but not its reduced uptake from the substratum as evidenced by its over 20 times larger content in roots than in the aerial parts. Composts applied for soil fertilization did not cause any major changes in the content of analysed microelements in oat biomass in comparison with mineral and farmyard manure treatment. Generally, the contents were deficient in view of fodder quality. Therefore, a supplementary, e.g. foliar treatment should be considered in order to enrich the obtained biomass in copper, zinc, manganese and iron
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