Biological nutritional value of zeolite-based soil enhancers

Abstract

A series of greenhouse experiments were conducted in order to determine the biological nutritional value of the substrate mixtures based on newly designed zeolite soil enhancers made to replace an earlier registered commercial enhancer (ZeoPlant™). Lettuce (Lactuca sativa L.) was used as a test species. Plant height, number of leaves, and fresh plant mass were measured. During the preliminary experiments, the optimal ratio of enriched zeolites in the peat-based substrate mixtures was verified (about 25% volumetric), as well as the usability of Pirotski peat for the preparation of substrate mixtures. Enriched zeolites (EZa, EZb, EZc, EZd) were mixed in optimal ratio with Pirotski peat and compared to a commercial zeolite-based substrate mixture that was used as a control treatment. The control treatment showed the best results. On the other side, the differences between other treatments were not significant, but they indicate that some of the examined soil enhancers have a great potential for application in vegetable seedling production.

Biologial Activity of Plant Metabolites

“…Furthermore, various studies, including those by Atif et al (2016), Damjanović et al (2005), Gutierrez-Miceli et al (2007), Herrera et al (2008), and Ugrinović et al (2018), have confirmed the significant impact of substrates on the growth and quality parameters of seedlings. Proper substrate selection is crucial for growers to produce high-quality seedlings (Gutierrez-Miceli et al, 2007;Herrera et al, 2008;Morales-Corts et al, 2014;Atif et al, 2016;Ugrinović et al, 2018;Ugrinović et al, 2021). Many studies have also confirmed that the total number of leaves per plant depends on the nutritional regime of the substrate, water regime, and other ecological factors.…”