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Vine pruning residues as a tool for planning vineyard fertilization

Tissue nutrient tests are used commonly to understand the nutritional status of many crop plants including grapevines. Leaf blades, petioles, and berries are the standard tissues to diagnose the nutrition of vineyards. Grape growers each winter remove last year’s fruiting shoots to prepare the vines for the upcoming growing season. Grapevine dormant stems collected in winter of 2020 on the coastal area of Croatia were collected. The research of grapevine dormant stems and soil samples taken from the vineyards had a goal to determine nutrient status and connection between these two factors. Research was carried out on two indigenous varieties (Maraština, Plavina) and one introduced international variety (Syrah). Soil samples were taken in the root-developing zone. To determine nutrient content in stem and soil samples ICP-OES technique was used after microwave digestion was used. Results indicate the fact that the analysis of grapevine pruning residues is an effective tool for determining grapevine nutritional status and planning vineyard fertilization. However, further research is required on different varieties and locations to define the reference values of individual elements.

grapevine, pruning, dormant stems, soil, nutrient

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