Plastic cover film on table grapes from field to cold storage

Abstract

Plastic film covers are commonly used in viticulture to shield table grape vines from harsh weather and minimize the impact of fungal diseases. The type of plastic film affects how it absorbs and reflects solar radiation, which can influence the wavelengths passing through the covering. The interaction of wavelength bands selected by the different covers with the vines underneath could influence grape ripening and yield and consequently influence shelf life. The study investigated the effects of three plastic films on two different table grape varieties IFG Eleven (Sugar Crisp™) and Italia, at harvest, focusing on quantitative parameters such as yield, juice chemical composition (including pH, TSS, and TA), and conducting a berry texture analysis. For the “Italy” variety, there was no statistically significant change in yield when using different plastic films. In contrast, a statistical difference was observed in the yield of the IFG Eleven variety. For the berry carpometric parameters, statistically significant differences were found in bunch length and width only in the IFG Eleven variety with different plastic films. The study also examined the pros and cons of using various plastic films on grape during cold storage, based on an analysis of texture and color parameters. The results indicated that the choice of plastic films impacted the quality and shelf-life of items during cold storage.

Film plastique recouvrant les raisins de table du champ à l’entrepôt frigorifique  

Le recouvrement par film plastique est une technique largement utilisée en viticulture pour protéger les vignes de raisin de table des conditions climatiques défavorables et pour réduire les effets négatifs des maladies fongiques de la vigne.  La composition du film plastique influence l’entrée du rayonnement solaire dans la canopée avec des effets sur les longueurs d’onde en relation avec différentes absorptions et réflectances. L’interaction de certains intervalles de lumière avec la vigne pourrait influencer la maturation et le rendement du raisin et, par conséquent, la durée de conservation. Trois films plastiques ont été caractérisés pour leurs propriétés radiométriques et utilisés pour couvrir deux variétés différentes de raisin de table, ifg eleven (sugar crisp™) et italia. L’étude a analysé les effets des films plastiques lors de la récolte, en se concentrant sur les paramètres quantitatifs tels que le rendement et la composition chimique du jus, comme le ph, le tss et l’at. En outre, une analyse de la fermeté des baies a été réalisée.  Pour la variété ‘italia’, le rendement n’a pas montré de différences statistiquement significatives en fonction des caractéristiques du film plastique. En revanche, une différence statistique a également été observée dans le rendement de la variété ifg eleven, qui a varié de 12,40 à 15,60 kg par plante. En ce qui concerne les paramètres carpométriques des baies, les films plastiques ont entraîné des différences statistiquement significatives au niveau de la longueur et de la largeur des grappes uniquement pour la variété ifg eleven. L’étude a mis en évidence les avantages et les inconvénients de l’utilisation de différents films plastiques dans l’entreposage frigorifique, sur la base d’une analyse des paramètres de fermeté et de couleur des baies. Les résultats ont montré que les films plastiques affectent la qualité et la durée de conservation des raisins à basse température. Cette étude pourrait être optimisée, afin de fournir aux producteurs des informations sur leur utilisation dans la gestion des vignobles.

Film plastico di copertura sull’uva da tavola dal campo alla cella frigo 

La copertura con film plastici è una tecnica largamente utilizzata in viticoltura per proteggere le viti di uva da tavola dalle condizioni climatiche avverse e per ridurre gli effetti negativi delle malattie fungine della vite.  la composizione del film plastico influenza l’ingresso della radiazione solare all’interno della copertura con effetti sulle lunghezze d’onda in relazione alle diverse assorbanze e riflettanze. l’interazione di determinati intervalli di luce con la vite potrebbe influenzare la maturazione e la resa dell’uva e di conseguenza, la conservabilità. sono stati caratterizzati per le loro proprietà radiometriche tre film plastici e utilizzati per coprire due diverse varietà di uva da tavola, ifg eleven (sugar crisp™) e italia. lo studio ha analizzato gli effetti dei film plastici al momento della raccolta, concentrandosi su parametri quantitativi quali la resa e la composizione chimica del succo, come ph, tss e ta. inoltre, è stata eseguita un’analisi della consistenza delle bacche.  per la varietà “italia”, la resa non ha mostrato differenze statisticamente significative in base alle caratteristiche del film plastico. al contrario, è stata osservata una differenza statistica anche nella resa della varietà ifg eleven, che è variata da 12,40 a 15,60 kg per pianta. per quanto riguarda i parametri carpometrici degli acini, i film plastici hanno determinato differenze statisticamente significative nella lunghezza e nella larghezza del grappolo solo nella varietà ifg eleven. lo studio ha evidenziato i vantaggi e gli svantaggi dell’uso di diversi film plastici nella conservazione a basse temperature, sulla base di un’analisi dei parametri di consistenza e colore delle bacche. i risultati hanno mostrato che i film plastici influiscono sulla qualità e sulla durata della conservazione delle uve a basse temperature. questo studio potrebbe essere ottimizzato, fornendo ai coltivatori spunti per il loro utilizzo nella gestione del vigneto.

DOI:

Publication date: November 18, 2024

Issue: OIV 2024

Type: Article

Authors

Rosa Anna Milella¹, Antonio Serra², Giovanni Gentilesco¹, Giovanna Forte¹, Teodora Basile¹, Marco Vendemia¹, Antonio Domenico Marsico¹, Antonio Coletta¹

¹ CREA – Council for Agricultural Research and Economics, Research Center for Viticulture and Enology – Via Casamassima 148, Turi (BA), Italy
² Department of Mathematical and Physical Sciences, University of Salento – Piazza Tancredi, 7, Lecce, Italy

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Tags

Full papers OIV 2024 | IVES Conference Series | OIV | OIV 2024

Citation

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