The effect of hard coal ashes on the quality of maize yield. Part 2. Microelements
2007
Antonkiewicz, J.,Agricultural Univ., Cracow (Poland). Dept. of Agricultural Chemistry | Losak, T.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin
Studies on the effect of coal ashes on maize were conducted as a pot experiment on mineral soil, to which between 13.33 and 800.0 g ash/pot was added, corresponding to the doses of between 10 and 600 t/ha. The research aimed to learn the effect of diversified ash doses on the content, uptake and proportions between Fe, Co, Mn, Al and Si in maize. Fe and Si concentrations in plants significantly increased with increasing doses of ash (Fe: 110.15-209.96 mg/kg d.m.; Si: 40.60-76.10 mg/kg), whereas Co, Mn and Al concentrations decreased (Co: 0.30-0.11 mg/kg d.m.; Mn: 207.83-44.65 mg/kg d.m.; Al: 300.09-179.80 mg/kg d.m). Higher concentrations of the studied elements were detected in maize roots than in aboveground parts. When ash was used alone as a substrate, aboveground parts were characterized by optimal Fe concentration (104.61 mg/kg d.m.), but deficient concentrations of Mn (29.69 mg/kg d.m.) and Co (0.01 mg/kg d.m.). Growing ash doses led to the widening of the ratios Fe:Co, Fe:Mn, Fe:Al and Mn:Co, and narrowing of the ratios Fe:Si, Mn:Al, Mn:Si and Al:Si. Increasing ash doses in soil negatively affected the uptake of Co, Mn and Al, but positively affected Si absorption by the experimental plants.
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