Variations in winter wheat grain qualities as affected by NK fertilisation and grain storage period. I. Indirect bread-making qualities
Masauskiene, A.(Lithuanian Inst. of Agriculture, Akademija, Kedainio reg. (Lithuania))E-mail:[email protected] | Ceseviciene, J.(Lithuanian Inst. of Agriculture, Akademija, Kedainio reg. (Lithuania))E-mail:[email protected]
The Lithuania-bred winter wheat (Triticum aestivum. L) cultivar 'Ada' and the Germany-bred cultivar 'Zentos' were investigated on the light loamy Endocalcari-Epyhypogleyic Cambisol in Central Lithuania (Dotnuva) in the years 2002 and 2003. The weather conditions during the grain ripening period, nitrogen fertiliser rates and application timing, and grain storage period had a significant effect on grain indirect breadmaking qualities of the cultivars. The best quality grain ripened in the dry year after fertilisation (broadcast) with ammonium nitrate N90+30 at resumption of vegetative growth in spring and at stem elongation stages, in the wet year - with N90+30+30 (additional application at flag leaf - early booting stage). For the grain stored for 30-90 days, variation in the protein content was inconsistent and the differences fluctuated within 1.0 percentage unit, Zeleny values decreased, the falling number increased, the content of wet gluten declined, and the quality of gluten improved. The effect of foliar potassium was negligible. The growth factors and storage period had a more pronounced impact on the qualities of cultivar 'Zentos' compared with those of cultivar 'Ada'.
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