Mineral nutrition as a factor of stability of technological quality in winter wheat cultivars
2005
Djuric, V. | Malesevic, M. | Pankovic, L.
A field trial was carried out with eight cultivars (Libellula, Drina, Sremcica, NSR-2, Jugoslavija, Somborka, Lasta and Pobeda) of winter wheat (Triticum aestivum L.). Six different rates of nitrogen fertilizer were tested: 0, 60, 90, 120, 150, and 180 kg N/ha. Increasing N fertilizer rates resulted in a linear increase of the direct and indirect indicators of quality. The best results were obtained with the cultivar Sremcica and the poorest with Lasta, while Jugoslavija and Pobeda were shown to be of approximately the same quality. The contribution of N fertilizer variance to total variance was the largest for protein content (43.7). The contribution of the genetic factor to total variance was the highest for crumb value number (CVN) (58.7) and bread volume yield (44,2) and the lowest for the protein content (20.8). The absence of significant differences in the CVN means at any of the N nutrition levels studied resulted from the variability of the indirect indicators closely linked with the direct indicators of baking quality, showing the importance of N nutrition for maintaining the stability of technological quality in winter wheat cultivars.
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