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Sulfur treatments, vine

The first was the rapid spread of Uncinula necator, vine powdery mildew, following its identification in England in 1845. A search for control methods led, from the initial observation by Mr Tuker in England that sulfur was an effective treatment, to the development in 1855 by Bequerel of a fungicide application programme based on the use of a fine form of sulfur dust. [Pg.75]

The powdery mildew is a pathogen that was brought into England from North America in 1845. Subsequently, powdery mildew was introduced into France in 1847, Belgium in 1848, and finally Italy in 1849. By 1853, it was discovered, in France, that vine treatments with sulfur were able to control this pathogen. [Pg.47]

Some vine treatment spray residues (e.g. Folpel) are well known to inhibit fermentation. Sulfur-and chloride-based compounds are the most harmful to yeasts. Inoculation with fresh yeast once the inhibiting residne has broken down is generally snfficient to reactivate fermentation in the must (see Hatzidimitriou et al., 1997). However, certain difficult final stages of fermentation can be attribnted to the presence of these residues. The minimum time between the last application of a product and the harvest date indicated by the man-ufactnrer is not always sufficient. [Pg.98]

This water from the soil transports the minerals that are necessary for growth in the plant. The ionic concentration of this solution is related to the nature of the soil and the fertilizers added, but a large amount of the available minerals is the result of biological activity in the soil. A potential disequilibrium can seriously affect vine growth. The best-known example is the increase in the exchangeable phytotoxic copper concentration in old, traditional vineyards that have received many sulfur and copper-based treatments to ensure the sanitary protection of the vine. Under the influence of bacteria in the soil, the sulfur is oxidized into sulfates which accumulate in the soil. The resulting soil acidification causes copper solubilization (Doneche, 1976). [Pg.279]


See other pages where Sulfur treatments, vine is mentioned: [Pg.102]   
See also in sourсe #XX -- [ Pg.279 ]




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