Results
Dry Mass
All three vegetable species under review (Table 1) cultivated on farms holding “Agro Bio Test” certificates were
demonstrated to have a clearly higher dry mass content
(p≤0.05) compared with vegetables cultivated near the
steelworks. Vegetables from eco-farms and from retailers in
Kraków showed a similar dry mass content.
Vitamin C
The three vegetable species grown on farms certified by
“Agro Bio Test” contained significantly higher (p≤0.05)
vitamin C, per unit of both fresh and dry weight, in comparison with the vegetables from areas adjacent to the steelworks and from local suppliers (Table 2). The differences in
vitamin C content between vegetables from eco-farms vs.
vegetables from areas around the steelworks vs. vegetables
purchased from random local retailers were: 15 and 21%