摘要：In this paper are presented results of the performed researches, for to establish the influence of fertilization treatments on nitrates content of some vegetable species, cultivated in the field: cabbage, carrots, bell peppers and onion. In the culture technology of these vegetables, they were applied the following fertilization variants (fertilizer being ammonium nitrate with 33% nitrogen): V1 = 0 kg nitrogen/ha; V2 = 100 kg nitrogen/ha; V3 = 200 kg nitrogen/ha; V4 = 400 kg nitrogen/ha; V5 = 800 kg nitrogen/ha. For to establish the accumulation potential of nitrates in vegetables cultivated in the field, it was used an enzymatic method. In the case of the high fertilization level, cabbage has the higher nitrates content (698.19 mg NO3-/kg), and bell peppers the lower nitrates content (61.70 19 mg NO3-/kg).
关键词：onion; bell peppers; carrots; cabbage; fertilization
