Preparation of Liquid Organic Fertilizer by Fermentation of Nettle (Urtica dioica L.) and Chamomile (Chamomilla recutita L. Rauschert)

摘要

In this experiment, the preparation of liquid organic fertilizer was performed for 17 days through two series of samples. For the fermentation process, dry nettle root and dry camomile flowers were used. The samples were prepared by dissolving 20 g of dry plants in 1 l of water, in two series: in technologically prepared demineralised water with pH = 7 and σ = 0.83 μS cm–1 and tap water (left 48 h at room temperature) with pH = 7.18 and σ = 374 μS cm–1. During the 17-day fermentation in the temperature range of 4–15 °C, changes in pH, concentration of total dissolved solids and electrical conductivity of the samples were measured. The results show a change in pH values of the fermented samples in distilled water, the values of which are close to optimal values (5.00–5.50) required for the application of liquid organic fertilizers. The release of a larger amount of total dissolved solids in such samples was also observed and higher values of electrical conductivity were measured.