ROOT BIOMASS ACCUMULATION IN VETCH (Vicia sativa L.) AFTER TREATMENT WITH ORGANIC FERTILIZER

DOI: 10.7904/2068–4738–VI(11)–100

Viliana VASILEVA

Institute of Forage Crops, 89 “Gen. Vladimir Vazov” Str., Pleven 5800, Bulgaria,
E–mail: viliana.vasileva@gmail.com

Abstract. Effect of the treatment with organic fertilizer Humustim on root biomass accumulation in vetch (Vicia sativa L.) (cv. Obrazets 666) was studied in a field trial carried out at the Institute of Forage Crops, Pleven, Bulgaria. Several doses of fertilizer were applied to the seed as a pre–sowing treatment, and during the vegetation growth phase (growing up and flowering stage), and as a combination between them. It was found that Humustim applications at all stages and rates resulted in increased root biomass. Plants accumulated from 661 to 717 kg/ha fresh, and from 254 to 280 kg/ha dry root biomass, which was 17.3 and 19.7%, respectively more than the untreated control. Humustim represent an excellent fertilizer in the modern trends such as sustainable agriculture and organic farming.

Keyword: Humustim, organic fertilizer, root biomass, vetch

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