engleski

The effect of mineral fertilization on annual vine shoot growth

The fertilization of a vineyard contributes to the creation of a larger vegetative power in the vines, which can then be loaded with a higher number of buds, and thus help to achieve a higher yield of grapes. The fertilization is carried out with mineral and organic fertilizers. The experiment was set up on March 31, 2010 at a cultivar of Italian Riesling, using three different treatments in randomized blocks. Each block consisted of four vine trees. The effect of fertilization on the growth of annual shoots, on the number of nodes and leaves per shoot as well as on the number of clusters per shoot was analysed. In the experiment a complex NPK mineral fertilizer, the so-called „NPK (SO3) 7-14-21 (24)” in the amount of 0.5 kg/vine tree, and the nitrogen fertilizer „KAN N 27” in the amount of 0.25 kg/vine tree were used. The mineral fertilization with „KAN N 27” as a nitrogen fertilizer yielded the highest average growth of the shoots during the growing season and also the highest number of nodes and leaves per shoot of the vine. The number of clusters did not change with respect to fertilization.

grapevine ; Italian Riesling ; mineral fertilization ; annual shoot

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