Disease severity on grape bunches (histograms) and tested products efficacy (lines) recorded in 2018.

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Context 1

... both the assessments, the milk powder was significantly different from the untreated control, providing a disease control similar to that provided by the sulphur-based plant protection product. The efficacy in reducing the disease severity ( figure 2) was close to 95-99% regardless the tested concentration of the milk powder, while concerning the disease incidence ( figure 1) a numerical dose-effect was observed among the three tested dosages (milk powder at 10 g/L, 20 g/L and 30 g/L, the latter with the highest performance). In the second and last assessment (7/9), when the crop was at BBCH 81 (beginning of berries ripening), the milk powder applied at 30 g/L provided a protection of the grape bunches numerically better than the sulphur reference standard. ...