ISHS Acta Horticulturae 526: V International Symposium on Grapevine Physiology
NITROGEN AVAILABILITY IN VINEYARD SOILS ACCORDING TO SOIL MANAGEMENT PRACTICES. EFFECTS ON VINE |
| Authors: | B. Rodriguez-Lovelle, J. Soyer, C. Molot |
| Keywords: | vine grass cover, leaf petiole nitrogen, soil nitrates, must composition, vigour, yield |
| Abstract:
A comparative study on N soil availability and vines responses to soil management practices was conducted on four vineyards for two years. Grass cover treatment was compared to conventional soil tillage and no tillage system. The effect of grass cover intensity was also analysed, comparing vines under grass cover every inter-row or every second inter-row. Nitrogen soil availability was always reduced under grass cover and leaves and must nitrogen grapevine levels were consequently affected. Yield, and mainly vigour, was also markedly reduced. The intensity of these effects was higher with a greater level of grass cover. The presence of grass under vines involved important N competition and vines adapt to the new conditions. | |
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