Effects of nitrogen and irrigation on the quality of grapes and the susceptibility to Botrytis bunch rot

Thomidis, T.; Zioziou, Eleftheria; Koundouras, Stéfanos; Karagiannidis, Constantinos; Navrozidis, Ioannis; Νικολάου, Νικόλαος

doi:10.1016/j.scienta.2016.09.036

Cited by 30 publications

(19 citation statements)

References 26 publications

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“…Total 92 N excess leads to high vigour, dense canopy, large dark-green leaves, extended vegetative growth period (competing with and delaying grape ripening) and increased grape sensitivity to fungal diseases (Thomidis et al, 2016).…”

Section: Symptoms Of N Deficiency and Excessmentioning

confidence: 99%

Understanding and managing nitrogen nutrition in grapevine: a review

et al. 2021

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This review addresses the role of nitrogen (N) in vine balance and grape composition. It offers an integrative approach to managing grapevine N nutrition. Keeping in mind that N excess is just as detrimental to wine quality as N depletion, the control of grapevine N status, and ultimately must N composition, is critical for high-quality grape production. N fertilisation has been intensively used in the past century, despite plants absorbing only 30 to 40 % of applied N. By adapting plant material, soil management and vine balance to environmental conditions, it would be possible for grape growers to improve plant N use efficiency and minimise N input in the vineyard. Vineyard N management is a complex exercise involving a search for a balance between controlling vigour, optimising grape composition, regulating production costs and limiting pollution. The first part of this review describes grapevine N metabolism from root N uptake to vine development and grape ripening, including the formation of grape aroma compounds. The advantages and limits of methods available for measuring plant N status are addressed. The second part focuses on the parameters that influence grapevine N metabolism, distinguishing the impacts of environmental factors from those of vineyard management practices. Areas for further research are also identified.

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Section: Symptoms Of N Deficiency and Excessmentioning

confidence: 99%

Understanding and managing nitrogen nutrition in grapevine: a review

et al. 2021

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“…Excessive vigor increases the leaf area/yield ratio and reduces light penetration through the canopy. Ripening delay, reduction of TSS and increase of titratable acidity are effects generally associated to high level of N fertilization (Baiano et al, 2011;Delgado et al, 2004;Thomidis et al, 2016). Furthermore, canopy microclimate alteration (i.e.…”

Section: Nitrogenmentioning

confidence: 99%

“…Furthermore, canopy microclimate alteration (i.e. excessive shading associated with poor ventilation), in combination with increased bunch compactness, greatly enhances grape susceptibility to pathogens such as Botrytis cinerea (Thomidis et al, 2016); however, N fertilization also increases the thickness of berry epicuticular wax as well as the concentration of biochemical defense compounds (Mundy, 2008). Wine anthocyanin concentration is usually reduced under high N availability (Brunetto et al, 2009;Hilbert et al, 2003;Pérez-Álvarez et al, 2013) partly because of the increased flesh-to-skin ratio causing a dilution of anthocyanins and other compounds located in the skin (Keller et al, 1999).…”

Section: Nitrogenmentioning

confidence: 99%

Grapevine quality: A multiple choice issue

Poni

Gatti

Palliotti

et al. 2018

Scientia Horticulturae

190

143

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“…Cases of N-deficiency or excess are anything but rare. N-deficiency is especially harmful when occurring around flowering [3] as it can severely curtail fruit set of the current season, while having also negative effects on next-year bud induction [5]; N excess can likely be even more detrimental as it can lead to: (i) Too high shoot 2 of 20 growth rates early in the season, with negative consequences on fruit set; (ii) excessive canopy density with obvious negative impact on bud induction and ripening (e.g., conferring excessive green aroma compounds and rot susceptibility) [6][7][8][9]; (iii) too prolonged shoot growth late in season, leading to excessive competition towards ripening and formation of less cold-resistant wood [10]; (iv) compact clusters with larger berries leading, again, to higher rot incidence and less favorable skin-to-berry ratio [11]; (v) downregulation of transcript expression of both structural and regulatory genes involved in anthocyanin biosynthesis [12] and (vi) surface-and ground-water pollution.…”

Section: Introductionmentioning

confidence: 99%

Ground Truthing and Physiological Validation of Vis-NIR Spectral Indices for Early Diagnosis of Nitrogen Deficiency in cv. Barbera (Vitis vinifera L.) Grapevines

et al. 2019

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Several narrow or broadband spectral indices can be calculated at varying spatial and spectral resolution, which can then be correlated with the physiological and nutritional status of the leaves. In a three-year trial carried out on fruiting, potted cv. Barbera grapevines subjected to full (N+) or no (N0) nitrogen supply, seasonal evolution of different leaf spectral indices were correlated with non-destructive chlorophyll readings (Minolta SPAD meter), leaf gas exchange, and vine performance. Throughout the entire trial, N starvation resulted in greater-than-proportional limitation of vine yield as compared to vegetative growth (55% compared to 26% less than values measured on N+). Indices calculated within the red-edge spectral domain had highest sensitivity to relative change between N+ and N0, also indicating that the promptest response was recorded at the median shoot zone level. Twelve broadband indices were linearly correlated with leaf blade N concentration at veraison, indicating that N values ≤ 1.8% of dry matter identify a limiting N status. Any of these indices collected at the leaf level can be reliably used as a non-destructive predictor of N availability, albeit due to significant between-year variation in their absolute values at a given N level, readings should always include a well-supplied N treatment.

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Effects of nitrogen and irrigation on the quality of grapes and the susceptibility to Botrytis bunch rot

Cited by 30 publications

References 26 publications

Understanding and managing nitrogen nutrition in grapevine: a review

Understanding and managing nitrogen nutrition in grapevine: a review

Grapevine quality: A multiple choice issue

Ground Truthing and Physiological Validation of Vis-NIR Spectral Indices for Early Diagnosis of Nitrogen Deficiency in cv. Barbera (Vitis vinifera L.) Grapevines

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