[The effect of regular treatment with ozone on the chemical composition of potatoes and vegetables].

The food value of potatoes, cabbage and carrot was studied after their treatment with ozone to prolong their period of storage. The regimen of ozone-treatment of the vegetables under laboratory conditions was: 20-40 mg/m3/4 h/day/25 times. The ozonization regimen under production conditions was close to that under laboratory conditions.

[Nutritive value of carrots grown using the herbicide prometryne].

Subject to study were some parameters of the nutritive value of carrot grown with the use of the herbicide prometryne introduced at a rate of 2 kg/ha. It was demonstrated that application of prometryne might exert an effect on the chemical composition of carrot and stimulate the synthesis of some of the nutrients (dry substances, sugars, vitamin C) on the one hand, and decrease the formation of other substances (carotene, some of the elements), on the other hand.