STANIMIR ENCHEV; AHMED MEHMED; GEORGI KIKINDONOV
Agricultural Academy, Agricultural institute, BG-9700, Shumen, Bulgaria
Enchev S., A. Mehmed, G. Kikidonov, 2018. Effect of mineral and organic fertilization on the production of Stevia (Stevia rebauduana B.), Bulg. J. Agric. Sci., 24 (Suppl. 2): 98-100
An experiment has been made in the fields of the Agricultural Institute – Shumen during 2013-2015 to study the effect of three organic and mineral products: Bioactive (100ml/da), Humustim (40 ml/da) and mineral nitrogen (20 kg/da), on the productive qualities of stevia (Stevia rebaudiana B.) For that aim I year seedlings were used. The parameters fresh and dry mass of a single plant, and fresh and dry mass yield from one da, were measured.
It was established, that the highest fresh mass yield from a single plant is formed by the variant, treated with mineral Nitrogen (20 kg/da) – the average yield of fresh mass is with 90 g (75.8%) higher than that of the untreated control. The tested organic and mineral products have positive influence on the dry mass yield index for the three years of testing.