EN
The aim of this work was to study the effect of new natural products using preharvest treatments on broccoli and their efficacy in controling postharvest diseases (grey mould and alternaria) during long-term storage. Commercial value of broccoli heads was also evaluated. In 2009 the most effective products against grey mould of broccoli head during long-term storage were: Prev-AM 060 SL (3.0 l/ha), Grevit 200 SL (1.5 l/ha) and Biosept 33 SL (1.5 l/ha). The marketable broccoli head was from 4.6 to 6.2. In year 2010 the most effective products against alternaria of broccoli head during long–term storage were: Strawberry extract (7.5 l/ha), Prev-AM 060 SL (3.0 l/ha) and BM 608 (7.5 l/ha). The marketable broccoli head ranged from 5.5 to 6.1.