Lignin and Lignocellulose-Based Organomineral Complex for Organic Agriculture

Abstract

The aim of this work was to evaluate the effect of low rates (20-40 kg ha-1) of siliconcontaining organo-mineral complex (LignoCel-Si) application on potatoes "Imanta" and summer wheat �Vinjet� productivity and quality, under conditions of organic farming. The LignoCel-Si organo-mineral complex was obtained on the basis of the residues of hydrolysis lignin and sea buckthorn (Hippophae rhamnoides L.) agro-waste lignocellulosic biomass after water-ethanol extraction, and enriched with silicon (Si)- containing inorganic oligomer. The field experiments were carried out at a certified biological field intended for scientific purposes. It was shown that LignoCel-Si has a favorable influence on the harvest volume and product quality at low application rates of 20-40 kg ha-1. In comparison with the control, the additional yield of wheat achieved on the background of LignoCel-Si (20 and 40 kg ha-1) was from 10 to 27 %, and for potatoes from 8 to 21%, correspondingly. The application of 40 kg ha-1 of LignoCel-Si complex also contributed to an increase in the quality of potatoes, which was reflected as an increase in the yield of ware potatoes (potato tubers > 75 mm in diameter). The results confirm the value of the LignoCel-Si complex as a soil biologically active additive and the possibility of its application in biological agriculture.