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Akimov (1988) recommended 5 — time irradiation with laser energy of seeds of carrots for increase of yield. The stimulation effect on germination of carrot seeds, Ludilov (1995) observed in treatment with electromagnetic field with hyperhigh frequency in range-1250- 5000w/sec. Cantliffe et al. (1995) pointed out, that the effect of temperature treatment of carrots seeds was greater than PEG — independently by or with the addition of GA3, but in comparasion with nontreated seeds strong positive influence was achieved. Sanders (1990) pointed out increase with 50 % of yield and weight of the carrot roots after the use of some biostimulators. Most of the carried out studies for the presowing treatment of carrots seeds are on self -nfluence of different agents, but not on comparative evolution between them.The main purpose of this investigation was to carry out study of different means and agents for presowing processing on some sowing qualities and physiological behaviours and upon the development of the plants and the yield. |
