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*

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…

Late pruning, an alternative for rainfed vine varieties facing new climatic conditions

In Chile there is a dry farming area known as a traditional wine region, where varieties brought by the Spanish conquerors still persist. These varieties, in general, are cultivated under traditional systems, with low use of technical and economic resources, and low profitability for their grapes and wines. In this region, as in other wine grape growing areas, climatic conditions have changed significantly in recent decades. In particular, the occurrence of spring frosts, when bud break has already begun, have generated significant losses for these growers.

Atypical aging and hydric stress: insights on an exceptionally dry year

Atypical aging (ATA) is a white wine fault characterized by the appearance of notes of wet rag, acacia blossoms and naphthalene, along with the vanishing of varietal aromas. 2-aminoacetophenone (AAP) – a degradation compound of indole-3-acetic acid (IAA) – is regarded as the main sensorial and chemical marker responsible for this defect. About the origin of ATA, a stress reaction occurring in the vineyard has been looked as the leading cause of this defect. Agronomic, climatic and pedological factors are the main triggers and among them, drought stress seems to play a crucial role.[1]

Evaluation of phenology, agronomic and oenological quality in minority wine varieties in Madrid as a strategy for adaptation to climate change

The main phenological stages (budburst, flowering, veraison, and ripeness) and the fruit composition of 34 Spanish minority varieties were studied to determine their cultivation potential and help winegrowers adapt their production systems to climate change conditions. In total, 4 control cultivars, and 30 minority varieties from central Spain were studied during a period of 3 campaigns, in the ampelographic collection “El Encín”, in Alcalá de Henares, Madrid. Agronomic and oenological characteristics such as yield, and total soluble solids concentration have been monitored.

Evaluation of Furmint clones in the Tokaj Wine Region

The ’Furmint’ is the most important grape variety in the Tokaj Wine Region, constituting around 65% of its vineyard area. Before the phylloxera disease many types were grown, but as selection started in the 20th century, its diversity dramatically narrowed. As a result, the cultivation of Furmint was based mainly on two heavy-cropping clones, T.85 and T.92 at the end of the ’80s. Aims of present clone research take into account that after solely quantity as target, quality emerged in the 1990’s and most recently, typicity appeared as more private estates began their own selection program.

The exploitation of Croatian grapevine genetic resources for the breeding of new resistant cultivars 

Croatian viticulture is mainly based on native grapevine varieties susceptible to various diseases and pests, which leads to unsustainable use of large amounts of pesticides. The sustainable development of viticulture in the future will only be possible by increasing the resistance of the grapevine through the development of new resistant varieties. Breeding programs have been launched in the leading wine-growing countries to develop resistant varieties possessing high-quality levels. Native cultivars from Croatia are not included in the breeding programs of other countries.