Influence of nitrogen fertilization on sugarbeet (Beta vulgaris) quality in an area of southern Spain.
1990
Troncoso de Arce, Antonio | Cantos, Manuel
3 páginas, 6 figuras, 2 referencias. Content D: fertilizer application in relation to yield formation and quality characteristics. Proceedidngs of the XI International Plant Nutrition Colloquium. The Netherlands 30 july-4 august 1989.
Show more [+] Less [-]Influence of soil nilrogen availability on quality components (sucrose, alpha-amino nitrogen , K+ and Na+) of sugarbeet was studied. This study was carried out on a homogeneous soil of southern Spain. We have tested 0, 100, 150, 200 and 250 kg N/ ha. The use of increasing quantities of nitrogen fertilizer leads to a large decrease in sucrose concentration in the root, but also to a large increase in root production. This inverse relation does not exist at high levels of fertilization. Sugar yield per ha is most increased between l00 and 150 kg N/ ha. On the other hand, the increase of nitrogen fertilization leads to a significant inerease of alpha-amino nitrogen. High levels of nitrogen fertilization have a decisive negative effect on the juice purity calculated according to the Wieninger and Kubadinov equation, and therefore on the recovery of sucrose from the root tissue.
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