Biološka hranljiva vrednost oplemenjivača zemljišta na bazi zeolita

Milka Brdar-Jokanović,Suzana Pavlović,Zdenka Girek,Vladan Ugrenović,Jelena Damnjanović,Slađan Adžić,Milan Ugrinović

doi:10.5937/jpea25-33591

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.

Highlights

Nahum et al, 2007; Herrera et al, 2008; Carmona et al, 2012; Zhang et al, 2012; Ben Jenana et al, 2013; Morales-Corts etHigh-quality seedlings are the main objective of every al., 2014; Atif et al, 2016; Meng et al, 2017; Ugrinović et al, nursery involved in vegetable production
This study aimed to evaluate different methods and organic or mineral fertilizers used for natural zeolite enrichment, via testing the biological nutritional value of prepared substrate mixtures on lettuce seedlings in the conditions of a controlled environment
The mixture containing 55% of ZeoPlantTM mixed with commercial substrate showed the highest value of fresh plant mass, significantly higher compared to mixtures containing commercial substrate and 25%, 35%, or 45 % of ZeoPlantTM as well as mixtures containing Pirotski peat and high amounts of ZeoPlantTM (35%, 45 %) but without significance compared to treatment containing the highest amount of ZeoPlantTM (55%) and Pirotski peat

Summary

Introduction

2007; Herrera et al, 2008; Carmona et al, 2012; Zhang et al, 2012; Ben Jenana et al, 2013; Morales-Corts etHigh-quality seedlings are the main objective of every al., 2014; Atif et al, 2016; Meng et al, 2017; Ugrinović et al, nursery involved in vegetable production. Growing substrates must fulfill some of the demands zeolite-like materials of certain traits to growing mixtures, the such as good porosity, water retention and demands related to air problem with unsuitable mechanical and/or chemical properties and water proportion, high nutrient content and nutrient could be solved, but there is a need to more precisely determine availability, low electroconductivity (EC), optimal pH value, the amount and type of fertilizers/nutrients to be added to which is different for each species grown. They should be pest- achieve optimal results

Objectives

Methods

Results

Conclusion