Distribution of aluminium in spring barley under aluminium stress
1995
Horak, V. | Dolejskova, J. | Hejtmankova, A. | Divisova, E. | Bures, R. (Ceska Zemedelska Univerzita, Prague-Suchdol (Czech Republic))
Acidification of soil increases the concentrations of available forms of aluminium in the soil solution. In the model experiment with the spring variety of barley (Terno) the acidification of soil was realized by regular acidic watering under increased values of pH. The clay loamy soil was used (pH/H2O=6.3, humus content 1.5 %), NPK nutrients in the form of KNO3 and Ca(H2PO4) were added. Aluminium was determined using flame AAS, samples with extremely low levels of aluminium were determined by the flameless atomisation. Calcium was determined using AES in the air-acetylene flame, phosphorus was determined spectrophotometrically. The long-term massive acidification resulted in a significant increase in aluminium content in all parts of the experimental plants. The results of the determination of aluminium in roots and stem-parts of plants were treated by the analysis of covariance with covariate time of sampling and a categorical variable pH.
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