The experiment was carried out in 2013. Leaves of five raspberry cultivars ('Polana', 'Polka', 'Tulameen', 'Laszka' and 'Glen Ample') were collected at the time of cultivation. Three organic and neighborhood conventional farms were used for experimental purposes. From one cultivar (one field plot), 3-4 plants were chosen, which were analyzed separately. One sample consisted of 10 leaves. The farm was treated as a replication. [organic farm no. 1 Localization: akroczym(52° 26″ N 20° 36″ E), Type of Soil: sandy middle soil IVa and IVb category (15% floatable particles) pH 5.5, Kind of Fertilizer: cow manure, Dose of Fertilizers and Time of Given: 35 t/ha one year before raspberry planting, Plant Protection System: Grevit 200 SL; organic farm no. 2 Localization: Zaluski (52° 37″ N 20° 22″ E), Type of Soil: sandy middle soil, sandy-clay IV category (20% floatable particles), pH 5.5, Kind of Fertilizer:cow manure, Dose of Fertilizers and Time of Given: 30 t/ha one year before raspberry planting, Plant Protection System: no protection; organic farm no. 3 Localization: Radzanow(51° 33″ N 20° 51″ E), Type of Soil: sandy middle soil IVa and III category (10% floatable particles), pH 6.0, Kind of Fertilizer:sheep manure, green manure, Dose of Fertilizers and Time of Given: 10 t/ha and 15 t/ha one year before raspberry planting, Plant Protection System: Bioczos 33 SL, Grevit 200 SL; conventional farm no. 1 Localization: Czerwinsk nad Wisla (52° 23″ N 20° 20″ E), Type of Soil: sandy-loamy middle soil IV and III category (20% floatable particles), pH 5.5, Kind of Fertilizer: Hydrocomplex 12-11-18; Superba 8-11-36, Dose of Fertilizers and Time of Given: (200 kg/ha, 150 kg/ha) in autumn a year before raspberry planting; 3 doses in time of cultivation, Plant Protection System: Signum 33 WG, Miros 20 SP; conventional farm no. 2 Localization: Czerwinsk nad Wisla (52° 23″ N 20° 20″ E), Type of Soil: sandy-loamy middle soil IV and III category (25% floatable particles), pH 5.5, Kind of Fertilizer: amonium nitrate, polyphosphate, magnesium sulphate, Dose of Fertilizers and Time of Given: in autumn a year before raspberry planting; 3 doses in time of cultivation, Plant Protection System: Calypso 480 SC, Miros 20 SP, Zato 50 WG; conventional farm no. 3 Localization: Czerwinsk nad Wisla(52° 25″ N 20° 23″ E), Type of Soil: sandy-clay middle soil II and III category (20% floatable particles) pH 6.0, Kind of Fertilizer:Rosafert 5-12-24-3, Dose of Fertilizers and Time of Given: 250 kg/ha in autumn a year before raspberry planting; 4 doses in time of cultivation, Plant Protection System: Calypso 480 SC, Miros 20 SP, Zato 50 WG].

Compared with conventional raspberry leaves, organic raspberry leaves were characterized by a significantly higher content of dry matter, total polyphenols, total phenolic acids, chlorogenic acid, caffeic acid, salicylic acid and quercetin-3-O-rutinoside; moreover, the organic leaves were characterized by higher antioxidant activity. Among examined cultivars, 'Polka' c. was characterized by the highest antioxidant status. However, raspberry leaves from conventional farms contained more total carotenoids, violaxanthin, alpha-carotene, beta-carotene, total chlorophyll and individual forms of chlorophylls: a and b.