The necessity of protection against scab can be determined with the help of the climate parameters observed in the orchard. Treatment can be effectively applied depending on the start of ascospore discharge and the weather conditions required for infestation, most commonly even before flowering. Cool spring weather and leaf wetness periods limit the range of active ingredients that can be used effectively. We can safely rely on copper during these times as well, since copper as an active ingredient is capable of destroying germinating ascoconidia even in extremely small quantities; there is no resistance against it. The difficulty of using copper is that, since it is a contact active substance, it has to be present on the plant surface at the time and location where the fungus germinates.
Compared to competing combinations, that is where Vegesol eReS offers outstanding performance. Due to its sunflower oil content, the sprayed layer undergoes polymerisation after forming a film on the plant surface, meaning it remains on the plant in a cross-linked form that is difficult to wash off. This helps the copper active ingredient resist being washed off by rains and dew, ensuring it can be at the right place at the right time: when the fungus germinates. This is a patented technology and is unique on the Hungarian market of plant protection products.