terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Adsorption of tetraconazole by organic residues and vineyard organically-amended soils 

Adsorption of tetraconazole by organic residues and vineyard organically-amended soils 

Abstract

Spain is the country with the largest wine-producing area in the EU and its productivity is largely controlled applying fungicides. However, residues of these compounds can move and contaminate surface and groundwater. The objective of this work was to evaluate the capacity of bioadsorbents from different origin to adsorb and immobilize tetraconazole by themselves or when applied as organic soil amendment, and to prevent soil and water contamination by this fungicide. The adsorption of tetraconazole by 3 organic residues: spent mushroom substrate (SMS), green compost (GC) and vine pruning sawdust (VP), as well as by vineyard soils unamended and amended individually with these residues at 1.5% (w/w) was evaluated using the batch equilibrium technique. Two vineyard soils from La Rioja were selected (S1-sandy loam, 0.26% OC; and S2-clay loam, 0.69% OC). Freundlich Kf adsorption constants of tetraconazole (3.6-19.2) by unamended and amended soils increased in the order: S1 < S2 < S2+GC < S2+VP < S1+VP ≈ S1+GC < S2+SMS < S1+SMS; and for the residues in the order: GC < VP < SMS. The Kf values of amended soils, especially for SMS-amended soils, were higher than those of unamended soils, due to their higher OC content. The application of organic residues to S1 soil increased its Kf value between 3.7-5.4 times, and that of S2 soil up to 2.7 times. However, the Kf values of S1 soil amended with the different organic residues were higher than those of amended S2 soils, despite their lower OC content. Therefore, physicochemical characteristics of soils different from OC (pH, carbonates, clay content, etc.) may also play an important role on the adsorption of tetraconazole by amended soils as observed for other fungicides.

Acknowledgements: We give thanks to Project TED2021-129962B-C41, funded by MCIN/AEI/10.13039/501100011033/ and the European Union (NextGenerationEU/PRTR).

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Asier Barrio1, M. Soledad Andrades2, M. Sonia Rodríguez-Cruz1, Jesús M. Marín-Benito1*

1 Institute of Natural Resources and Agrobiology of Salamanca (IRNASA, CSIC), Cordel de Merinas 40-52, 37008 Salamanca, Spain.
2 Agriculture and Food Department, University of La Rioja, Madre de Dios 51, 26006 Logroño, Spain.

Contact the author*

Keywords

adsorption, fungicide, vineyard soil, conservation, organic amendment

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Extreme vintages affect grape varieties differently: a case study from a cool climate wine region

Eger wine region is located on the northern border of grapevine cultivation zone. In the cool climate, terroir selection is one of the foundations of quality wine making. However, climate change will have a significant impact on these high value-added vineyards. This study presents a case study from 2021 and 2022 with the investigation of three grape varieties (Kadarka, Syrah, Furmint). The experiment was conducted in a steep-sloped vineyard (Nagy-Eged hill) with a southern exposure.

Read More

Use of UHPH to improve the implantation of non-Saccharomyces yeasts

Ultra High-Pressure Homogenization (UHPH) is a high-pressure pumping at 300 MPa (>200 MPa) with a subsequent depressurization against a highly resistant valve made of tungsten carbide covered by ceramic materials or carbon nanoparticles. The intense impact and shear efforts produce the nano-fragmentation of colloidal biopolymers including the elimination of microorganism (pasteurization or sterilization depending on in-valve temperature) and the inactivation of enzymes.

Read More

Sparkling wines and atypical aging: investigating the risk of refermentation

Sparkling wine (SW) production entails a two-steps process where grape must undergoes a primary fermentation to produce a base wine (BW) which is then refermented to become a SW. This process allows for the development of a new physicochemical profile characterized by the presence of foam and a different organoleptic profile.

Read More

Effects of different soil types and soil management on greenhouse gas emissions 

Soil is important in the carbon cycle and the dynamics of greenhouse gases (CO2, CH4 and N2O). Key soil characteristics, such as organic matter content, texture, structure, pH and microbial activity, play a determining role in GHG emissions[1]. The objective of the study is to delimit different types of soil, with different soil management and to be able to verify the differences in CO2, CH4 and N2O emissions. The study was carried out in a vineyard of Bodegas Campo Viejo in Logroño (La Rioja), whose plant material is Vitis vinifera L. cv. Tempranillo.

Read More

Crown procyanidin quantification in red wines, rosé wines and Port wines

Condensed grape tannins play a major role in the organoleptic properties and quality of red wine. Recently, a new sub-family of macrocyclic condensed tannins has been identified in red wine and named “crown tannins”. Indeed, the first compound of the family identified and characterised by NMR was the crown procyanidin tetramer which is composed of a macrocyclic structure composed of four (-)-epicatechins link together by B-type interflavanoid linkage in the following an alternative sequences of C4-C8 and C4-C6 linkage. The 3D structure of this unusual crown procyanidin family reveals a central cavity in the molecule [1].

Read More