9. Investigation of humatic acid on the short-day onion cultivars grown by drip irrigation system in the condition of South Bulgaria

Author: Todor Babrikov, Antonia Ovcharova

DOI: n/a


The positive effect of humatic acid on the development of short-day onion cultivars was established. Highest influence of the treatment was in the cultivar Swift. The yield form it was with 15,71% above the non-treatment variants.