Abstract
Wheat and barley varieties from breeding plots in advanced yield trials were tested for NO3 concentration in their stems at the tillering stage. The study was carried out for three years, at three different locations with a high number of varieties, aiming to determine whether there are varietal differences which could affect the interpretation of prognostic standards set up in a previous study.
From nine comparisons between 12 different varieties it was shown that differences in NO3 concentration occurred on only three occasions and these were due to factors which affect NO3 in plants, other than genotypic.
The study concluded that varietal differences in NO3 concentration are not a critical consideration for the interpretation of prognostic standards for genotypes which have been developed for certain environmental conditions.
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Papastylianou, I. Effect of wheat and barley varietal differences in nitrate concentration on plant analysis interpretation. Fertilizer Research 12, 157–163 (1987). https://doi.org/10.1007/BF01048915
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DOI: https://doi.org/10.1007/BF01048915