Abstract
RESPONSE OF DURUM WHEAT TO NITROGEN FERTILIZATION RATES
Highlights
Nitrogen fertilization is a major factor for high yields and grain quality of durum wheat (Panayotova, 2010; Ricciardi, 2001)
With high nitrogen rate N180 the lowest average yield was 3850 kg.ha-1 and the highest registered grain yield was 5380 kg.ha-1. These results confirmed that the nitrogen effect on grain yields of durum wheat was strongly dependent on the weather conditions during durum wheat vegetation (Modhej et al, 2008)
The low N60 and moderate N120 nitrogen rates had no significant effect on the harvest yield index and its values were close to the control
Summary
Nitrogen fertilization is a major factor for high yields and grain quality of durum wheat (Panayotova, 2010; Ricciardi, 2001). Nitrogen has a strong influence on growth, but its impact on yield, quality and dry matter formation depends on the growing conditions. Durum wheat requires optimum fertilizer rates, consistent with the conditions of the area and the specifics of the field to increase the grain quality (Panayotova and Gorbanov, 1999). Nitrogen fertilization increases many of the quality indicators of durum wheat - crude protein content, wet and dry gluten, weight of 1000 grains, cooking properties of the pasta products (Panayotova and Gorbanov, 1999). The interaction between environmental conditions and nitrogen rates has a significant impact on grain quality (Sanjeev et al, 2000). The sharp temperature rise, coupled with rapid drought, leads to worse quality (Panayotova and Valkova, 2010)
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