Mechanical pruning and soil organic amendments in vineyards of Syrah: effects on grape composition

Botelho, Manuel; Ribeiro, Henrique; Cruz, Amândio; Duarte, D.; Faria, Diana L.; Castro, Rogério; Ricardo-da-Silva, Jorge M.

doi:10.20870/oeno-one.2021.55.1.4512

Cited by 5 publications

(11 citation statements)

References 40 publications

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“…The parameters controlled in this phase were weight of a hundred berries (g), °Brix, potential alcohol content (%), pH and total acidity (g of tartaric acid/L). These results are presented in Botelho et al (2021).…”

Section: Winemakingmentioning

confidence: 90%

“…Concerning K accumulation in the berries, according to Etchebarne et al (2009), it is directly related to the plant water status, so the reduction of K concentration observed in MEC was likely related to the lower water availability in this treatment (Botelho, 2021). Moreover, the wine K content also reflects the precipitation that naturally occurs with tartaric acid (Boulton et al, 1995), which was tendentially higher in MEC (Botelho et al, 2021) and, probably, led to a higher precipitation of K, reducing its level in wine.…”

Section: Major Elementsmentioning

confidence: 92%

“…The present work is part of a broader study, from which the main outcomes about vine vegetative and reproductive growth have already been published in Botelho et al (2020) and about grape composition in Botelho et al (2021).…”

Section: Introductionmentioning

confidence: 99%

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Mechanical pruning and soil organic amendments in vineyards of ‘Syrah’: effects on wine mineral composition

Botelho

Ribeiro

Cruz

et al. 2021

Ciência Téc. Vitiv.

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The interaction of mechanized pruning systems and soil organic amendment can affect vine vegetative and reproductive growth. However, since organic amendments supply several mineral elements, namely heavy metals, this study aimed to understand the effects of the interaction between these two practices on the mineral composition of wine. Two field trials were implemented in ‘Syrah’ vineyards in two Portuguese wine regions (Lisboa and Tejo). Mechanical hedge pruning was compared with hand spur pruning and four different organic amendments were tested: biochar, municipal solid waste compost, cattle manure and sewage sludge. The nitrogen (N), phosphorus (P) and potassium (K) wine contents were significantly reduced by mechanical pruning while calcium (Ca) and magnesium (Mg) contents were tendentially higher in this pruning system. Mechanical pruning also reduced the content of some minor elements, such as arsenic (As), molybdenum (Mo) and nickel (Ni). In 2014, the year with the higher reproductive growth, some other elements also decreased as a consequence of the mechanical pruning (gallium - Ga; lithium – Li; rubidium - Rb, thallium – Tl; yttrium - Y). Concerning the organic amendments, sewage sludge was associated with the wines with the lowest P and iron (Fe) content. Ca content was tendentially higher in municipal solid waste compost and sewage sludge treatments. Mechanical pruning and organic amendments had different effects on the mineral composition of wine, according to each specific element. However, the legal limits, recommended by OIV and established by European Union, as well as the technical limits, adopted by winemakers, were never exceeded and the interaction of both practices does not seem to be a problem in what concerns to the mineral composition of the produced wines.

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Section: Winemakingmentioning

confidence: 90%

Section: Major Elementsmentioning

confidence: 92%

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Mechanical pruning and soil organic amendments in vineyards of ‘Syrah’: effects on wine mineral composition

Botelho

Ribeiro

Cruz

et al. 2021

Ciência Téc. Vitiv.

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“…Total anthocyanins and total phenols in grapes were assessed also at harvest. The results of grape analysis before fermentation are presented in Botelho et al (2021).…”

Section: Methodsmentioning

confidence: 99%

“…According to the reviewed literature, mechanical pruning seems to be an appropriate strategy to face the increasing scarcity of skilled hand-labor, to decrease production costs and increase productivity while organic amendments increase productivity, address the problems associated with predicted climatic changes, and, when obtained from human residues (i.e., residues from human settlements), are a tool to implement circular economy. However, the interaction between mechanical pruning and soil organic amending have significant effects in vegetative and reproductive growth (Botelho et al 2020) as well as in grape composition (Botelho et al 2021).…”

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confidence: 99%

Mechanical Pruning and Soil Organic Amending in Two Terroirs. Effects on Wine Chemical Composition and Sensory Profile

et al. 2021

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The knowledge about the interaction between mechanical pruning and soil organic amending is still scarce. This study aimed to examine the effects of the interaction between these two practices on wine quality. Syrah grapes from two trial fields in Portugal subjected to two different pruning systems (mechanical pruning; hand spur pruning) and five different organic amendment treatments (control, biochar, municipal solid waste compost, cattle manure, and sewage sludge) were harvested and vinified for four years. Mechanical pruning significantly reduced wine alcoholic strength, pH, and total anthocyanins. Mechanical pruning and organic amendments, tendentially reduced wine total phenols and tannin power, known as an "estimation of the astringency potential of the wines". Tasters found low but significant differences in global appreciation with the pruning system. Sludge tended to reduce wine global appreciation more than municipal solid waste compost and cattle manure, while biochar had no effect on tasters' preference when compared to the control. There was strong relation between yield and tasters' preference only above 6 kg/vine and 8 kg/vine depending on the terroir. Mechanical pruning tendentially has significant effects on wine quality when yield raises above a certain level. Thus, with this pruning system, the choice of the organic amendment and its amount must be done considering the destiny of the produced grapes. To the best of our knowledge, effects of the interaction of mechanical pruning with soil organic amending on wine quality are a novelty.

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Post-Veraison Water Stress and Pruning Level on Merlot Grapevine (Vitis vinifera L.): Effects on Berry Development and Composition

Berhe

2022

International Journal of Agronomy

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The grapevine berry development and composition at harvest are major determinant of productivity and wine quality. The increase in grapevine productivity by applying proper pruning and watering may affect fruit traits of the grapevine development notably berry size, weight, and volume as well as the berry composition mainly the total soluble solids (TSSs), titratable acidity (TA), pH of the grapes, total anthocyanins, and phenolic content and concentration. In this context, this study aimed to explore the response of berry development and composition to the interactive effect of pruning level and post-veraison water stress. Four pruning levels (severe, standard, light, and minimal) in combination with four post-veraison water stresses (none, light, moderate, and intense) were tested. The interactive effect of pruning level and post-veraison water stress has significantly altered all parameters, except berry weight which was influenced by the main effect of the two factors. Generally, post-veraison water stress reduced berry volume, weight, yield, and TA, but increased the TSS, pH, total anthocyanins, and phenols. Increasing in the pruning level also reduced berry yield per vine, TSS, and pH, but increased the berry volume, weight, TA, total anthocyanins, and phenols. Specifically, the highest berry volume, weight, and TA were registered in severely pruned grapevines with adequate water supply. Conversely, the minimally pruned grapevines with intense water stress had the highest TSS and pH of grape juice. The total anthocyanins and phenols were advanced by the increment from minimal to severe pruning levels but depressed when the water stress extended from none to an intense level. In the other hand, the maximum total anthocyanins and phenols in terms of concentration and content were observed in severely pruned grapevines under intense water stress. Interestingly, higher berry yield per grapevine was scored in minimally pruned grapevines with adequate water supply, possibly due to the increased number of nodes per vine. TSS had a strong negative relationship with berry volume, weight, yield, and TA, while pH had a strong positive relationship with TSS. Total anthocyanins and phenols were also inversely correlated with berry yield per grapevine. The results showed that the combined effect of pruning levels and water stress is a powerful tool to balance berry development and composition. As Merlot is a typical red wine grapevine, it is important to increase the berry composition even though there could be a reduction in its berry development variables including berry yield per vine.

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Mechanical pruning and soil organic amendments in vineyards of Syrah: effects on grape composition

Cited by 5 publications

References 40 publications

Mechanical pruning and soil organic amendments in vineyards of ‘Syrah’: effects on wine mineral composition

Mechanical pruning and soil organic amendments in vineyards of ‘Syrah’: effects on wine mineral composition

Mechanical Pruning and Soil Organic Amending in Two Terroirs. Effects on Wine Chemical Composition and Sensory Profile

Post-Veraison Water Stress and Pruning Level on Merlot Grapevine (Vitis vinifera L.): Effects on Berry Development and Composition

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