Reduce the level of Merlot disorder
Young vines with high levels of nitrate in the tissue often die or remain unproductive throughout the life of the vine. The disorder is known as ‘Merlot Disorder’. Symptoms of “Merlot disorder” are smaller leaves than usual, leaf-edge burn, poor leaf colour and the wood fails to mature. The application of molybdenum significantly reduced the level of disorder.
Young vines with high levels of nitrate in the tissue often die or remain unproductive throughout the life of the vine. The disorder is known as ‘Merlot Disorder’. Symptoms of “Merlot disorder” are smaller leaves than usual, leaf-edge burn, poor leaf color and the wood fails to mature. Application of molybdenum significantly reduced the level of disorder.
Recommended Yara fertilisers for grapevines
Related articles
Influencing grapevine yield
High grapevine yields are obtained on the most freely drained soils where water is not limiting. Vines will grow across a wide range of soil pHs, but extremes will render many nutrients unavailable and thereby restrict yield.
Managing grape sweetness
The amount of sugar in the grape influences potential alcohol content after fermentation, and the amount of residual sugar remaining in the wine.
Increasing grape berry size
While smaller grapes may produce a more intensely flavoured, quality wine, the grower needs to balance this with the need for a high yield from well-sized berries on his vines.
Influencing grape health
Grapes need to be free of the different disorders and rots in order to meet market requirements. The extent of these varies according to environmental conditions, varietal susceptibility and crop nutrition.
Minimising bunch stem necrosis in wine grapes
Bunch stem necrosis (water berry) in grapes affects fruit set and fruit ripening. It can occur around the bloom, in which case it is called early bunch stem necrosis, at veraison or later. The occurrence of it is associated with weather conditions and...
Nutrient deficiencies-Wine Grape
Looking for even more information ...
If you would like more information and would like to speak to one of our fruit specialists or area managers please find all their contact details here
Contact your local Yara area manager or agronomist
Where can I buy Yara fertiliser ...
If you would like to find your nearest Yara supplier or merchant simply use this searchable map with all their contact details here.
