Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Neli KERANOVA
In the present work, the "genotype-environment" interaction of the yields of essential oil and oilseed technical crops in Bulgaria is investigated and analyzed. Data are presented for a fourteen-year period related to yields of: rose, lavender, mint, coriander, valerian and lemon balm, sunflower, canola, soybeans, peanuts, pumpkins. It was established that among the essential oil crops with the highest yields is mint (9250 kg/ha), and with minimum yields – coriander (914.3 kg/ha). Mint proves to be the crop with the greatest degree of susceptibility to environmental factors in terms of yields compared to other crops of this group. Among the oilseed technical crops, rapeseed has the highest, but unstable, yields (2063.8 kg/ha). Pumpkins for seeds are the lowest (662.9 kg/ha). The most resistant to external factors are sunflowers and pumpkins, which makes them a preferred crop for cultivation in regions with changing climatic conditions.
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