Influence of different organic fertilizers on the quality of lavender (lavandula officinalis chaix) seedlings

This paper presents results of study of the influence of 4 different organic fertilizers (Chap liquid, Biofert, Guano and Stallatico jolly) on some of the most important productive traits of lavender seedlings. All fertilizers were applied once, except Chap Liquid which was applied twice. Two control variants were included in the experiment: one that was not fertilized and the other one where the organic-mineral fertilizer Sapro elixir was applied. The studies of influence of organic fertilizers at the height of the stems, weight of the above ground part and the mass of roots of the lavender seedlings was done in greenhouse. The highest average height of lavender seedlings was measured on a control variant fertilized with organo-mineral fertilizer Sapro elixir (25.5 cm) as well as variants where Chap fluid was applied twice - 24.8 cm and variant Biofert - 24.6 cm. Plants with the lowest stem height were measured on non fertilized control - 19.6 cm. All variants where organic fertilizer was applied had statistically significantly higher stem compared to plants grown in non fertilized control. In the Biofert variant was measured the largest average weight of the above ground part of the plant - 22.9 g, while the lowest was in non-fertilized control - 12.1 g. The average weight of the above ground part of the plant treated with organic fertilizers was significantly higher than in non fertilized control. The weight of the above ground part of the plant of lavender seedlings fertilized with Biofert was statistically higher than all other fertilized variants, but also higher than control variants fertilized with organo-mineral fertilizer