Galina ANTONOVA, Stefan NEYKOV, Lilia KRASTEVA, Petar CHAVDAROV

Evaluation of Morphological Manifestations of New Bulgarian Kohlrabi Variety Grown in The Conditions of Organic Crop Production

Anahtar Kelimeler:

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Evaluation of Morphological Manifestations of New Bulgarian Kohlrabi Variety Grown in The Conditions of Organic Crop Production

A new Bulgarian kohlrabi variety Niki was studied in two systems of organic crop production: organic system without fertilizer and without pesticide treatment of the plants and organic system by use of biological fertilizer and plant protection with biological insecticides and biofungicides. The morphological characteristics: size of leaf rosette, number and weight of rosette leaves and weight, height and diameter of the kohlrabi (knob) were investigated. It was established that the new kohlrabi variety demonstrates relatively good biological potential for realization in organic crop production systems although the values recorded for almost all studied characters of the morphological characteristics were lower compared to those recorded in the conditions of conventional crop production. The phenotypical manifestations of the variety were better in organic system production with use of bioproducts for fertilization and plant protection where the values of the characters from the morphological characteristics were with 6 % to 23 % lower than those recorded in conventional production system. The values of the studied characters of kohlrabi grown in organic production without application of products for fertilization and plant protection were with 15 % to 34 % lower compared to the recorded in the conventional production. The average weight of the kohlrabi (knob) was 1.110 kg in organic system production with use of bioproducts for fertilization and 0.897 кg by growing in organic production without application of products for fertilization and plant protection which were smaller compared to the registered knob weight in conventional production 1.256 кg

Keywords:

Kohlrabi, Organic Production Morphological Characters,

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