Effect
ProAct treated Potato, var. Cultra, grown in a field had no difference in plant vigour on 5 different times (+0.9%), Ca content in leaves (-5.8%) or petioles (-1.9%), no difference in blackleg incidence (later and lower incidence at late treatments), tuber skin loss (-41.1%), tuber bruising risk (+42.2%), no difference in yield (ton/ha): <45mm (-14.9%), 45-55 (+10.8%), 55-65(-12.5%), 65-85 (-0.7%), >85 (+25.8%), marketable yield (-3.5%), total yield (-3.8%), no difference in number of tubers: <45mm (-301.2%), 45-55 (+9.3%), 55-65 (-11%), 65-85 (+3.4%), > 85 (+50%), marketable number of tubers (-0.7%), total number of tubers (-2.2%), no difference in netting or skin bloom, no difference in internal defects (-12.5%) and in tuber Ca content (+5.6%) compared to the untreated control grown in the same conditions.
