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Letteratura scientifica selezionata sul tema "Grape vines"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 3 febbraio 2022

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Articoli di riviste sul tema "Grape vines"

Johnson, Donn T., Barb A. Lewis e J. David Whitehead. "Grape Scale (Homoptera: Diaspididae) Biology and Management on Grapes". Journal of Entomological Science 34, n. 2 (1 aprile 1999): 161–70. http://dx.doi.org/10.18474/0749-8004-34.2.161.

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Grape scale, Diaspidiotus uvae (Comstock), is a pest of grapes, Vitus spp., in the south-central United States. This study compared Julian days and cumulative degree-days (DD at base 10°C accumulated after 1 April) to grape scale biology and control in Arkansas. On the average, first generation crawlers began emerging 14 May (274 DD) and peaked on 20 May (356 DD). First generation winged males began emerging on 26 June (794 DD) and peaked 13 July (1,108 DD). Second generation crawlers began emerging on 20 July (1,166 DD) and peaked on 12 August (1,549 DD). Second generation wingless males began emerging on 31 August (1,857 DD) and peaked on 18 September (2,026 DD). Relative to untreated vines, vines treated with chlorpyrifos at bud swell (early April) or as late as early May (near grape bloom) realized at least an eight-fold reduction in the number of crawlers and adult males per sticky tape trap. Vines receiving the second application near grape bloom had significantly fewer crawlers in May, August and September than vines sprayed once in late April. A chlorpyrifos treatment in early April provided at least a 30-d lethal residual on grape against grape scale crawlers that emerged during May.

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McEachern, George Ray. "Four Grape Canopy Systems in Texas". HortScience 33, n. 4 (luglio 1998): 600e—600. http://dx.doi.org/10.21273/hortsci.33.4.600e.

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I. Chennin Blanc 107-cm bilateral cordon spaced 3.6 × 2.4 m, 1119 vines/ha, 14 spurs with 32 buds/vine. Yields were 8.8 t·ha-1 in the third leaf; 9.7 in the fourth, and 12.8 the 5th year, 1990, at the Jane Terrell Vineyard, Navasota, Tex. II. Cabernet Sauvignon with a two-trunk 122 cm bilateral cordon spaced 3.3 × 1.2 m, 2445 vines/ha with 48 buds/vine. Yields were 9.7 t·ha-1 for 1994 through 1997 at the mechanically harvested Newson Vineyard, Plains, Tex. III. Le Noir with a 91-cm trunk and a two-cane canopy; spaced 3 × 2.1 m, 1536 vines/ha, with 14 buds/vine. Yields were 13.3 t·ha-1 in 1996 and 11.2 in 1997 at Messina Hoff Vineyard, Bryan, Tex. IV. Merlot/110R with a 45° slanting cordon, 30 cm at south to 152 cm at north, spaced 1.5 × 1.5 m, 4308 vines/ha with 10 spurs and 20 buds/vine. Yield of 10.8 t·ha-1 in the third leaf, 1997, at Wolf Vineyard, Valley View, Tex. Four very different canopy systems were successful; the ideal system is yet to be determined.

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Huo, Shi Wu, e Feng Qin Zhao. "Optimization Design on Covering-Soil Machine for Grape Vines". Applied Mechanics and Materials 528 (febbraio 2014): 323–27. http://dx.doi.org/10.4028/www.scientific.net/amm.528.323.

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Aiming at the problem of the fracture and damage of key parts of covering-soil machine for grape vines, on the basis of structure design and test study of the existing small covering-soil machine for grape vines，its key components were analyzed and optimized by using computer-aided software ANSYS，and the problems of structure design existing covering-soil machine for grape vines were found，in the end, the structure of the machine with high-performance was attained through optimizing. This study can provide theoretical basis for this kinds of machine production.

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Tarricone, L., G. Masi, S. Roccotelli, A. R. Caputo e P. Crupi. "Vine performance of ‘Italia' table grape in relation to organic soil amendment". BIO Web of Conferences 15 (2019): 01034. http://dx.doi.org/10.1051/bioconf/20191501034.

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The following research took place during the 2018 − ‘19 season in ‘Italia' table grape vineyard in Apulia. Four treatments were compared: no fertilized (T), organic amendment fertilized (B) at rate of 5.0 ton/hectare, equivalent at the rate of 100 Kg N ha−1, 75 Kg P2O5 ha−1 and 75 Kg K202 ha−1; mineral fertilized (M) at the same rate of N, P2O5 and K2O of organic fertilized vines and finally a cover crops treatment with a mixture of vetch, pea and lentil (S). Leaf gas exchange during summer season shown significant differences in term of net CO2 assimilation, stomatal conductance, transpiration onto organic fertilized vines respect to control vines. Vines fertilized with organic amendment shown a better water status during warmest summer days since organic compounds improve the soil-water holding capacity. Compared to unfertilized vines, vines fertilized with organic amendment have shown a significant increase in yield per vine (+ 32%) in relation to the highest cluster weight and the highest sugar content respect to mineral fertilized vines. Our results indicates that application of an high level of soil organic amendment on ‘Italia' table grape vines increase grapevines yield, berry solid soluble solid and have improved soil properties, contrasting summer drought effect.

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Hedberg, PR, R. McLeod, B. Cullis e BM Freeman. "Effect of rootstock on the production, grape and wine quality of Shiraz vines in the Murrumbidgee Irrigation Area". Australian Journal of Experimental Agriculture 26, n. 4 (1986): 511. http://dx.doi.org/10.1071/ea9860511.

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The grape production and grape and wine quality of Shiraz vines, grown either on their own roots or on 6 rootstocks that have varying resistance to nematodes, were compared. Vines on the rootstocks Ramsey and Dog Ridge outyielded ungrafted vines by 46 and 48%, respectively, principally because of increased vegetative growth and hence retention of more nodes at pruning. Ramsey rootstock gave a greater grape yield per shoot. The ability of Dog Ridge stocks to produce yields as high as those of Ramsey highlights the importance of adequate pruning levels to enable the full potential of rootstocks to be determined. Vines on the rootstock Dog Ridge produced wines with higher pH values than wines from ungrafted control vines. Nematode counts suggested that the Vitus champini stocks have good tolerance to both rootknot and root lesion nematodes.

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Granett, Jeffrey, Laszlo Kocsis, Laszlo Horvath e Eva Baracsi Horvathne. "Grape Phylloxera Gallicole and Radicicole Activity on Grape Rootstock Vines". HortScience 40, n. 1 (febbraio 2005): 150–53. http://dx.doi.org/10.21273/hortsci.40.1.150.

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The objective was to explore temporal distribution of grape phylloxera, Daktulosphaira vitifoliae (Fitch), gallicoles on grapevine rootstocks (Vitis sp.) and determine how this distribution arose. We tested the hypothesis that leaf galls are created by individuals arising from the soil in the spring. Galls begin to appear at budbreak and gall averages per leaf increase variably as the season progresses. Initial galling appears to be associated with dry conditions and gall populations decline with rain. Emergence-trap catches show that phylloxera maintain populations on rootstock roots and that these populations disperse above ground. Aerial trap data demonstrated wind dispersal of crawlers and alates. Shielding of canes from soil-emerging phylloxera largely prevented early gall formation. These results suggest alternative testable hypotheses for explaining overwintering of phylloxera in rootstock vineyards.

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Badr, Sayed A. "YIELD AND QUALITY OF THE RED GLOBE GRAPE VARIETY AS INFLUENCED BY GRAFTING ON DIFFERENT ROOTSTOCKS". HortScience 27, n. 6 (giugno 1992): 689e—689. http://dx.doi.org/10.21273/hortsci.27.6.689e.

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Grafted and non-grafted vines of the Red Globe cultivar were planted in May, 1985 in a randomized block design to determine the effects of grafting on different rootstock on vine growth, yield, and fruit quality. The rootstocks used in this trial were Harmony, Freedom, Couderc 1613, and Thompson Seedless; non-grafted vines included rooted cuttings and one-year-old rootings. Vines grafted on Freedom were more vigorous than any other vines. The levels of nitrogen and potassium were significantly higher in vines grafted on Freedom than non-grafted vines or those grafted on other rootstocks. Yield was significantly influenced by the different rootstocks. Vines grafted on Freedom produced significantly lower yield than other vines. Vines grafted on Harmony and Couderc 1613 were not significantly different from each other or non-grafted vines that were established from a rooted cutting.

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Lombard, Kevin, Bernd Maier, Franklin J. Thomas, Mick O’Neill, Samuel Allen e Rob Heyduck. "Wine Grape Cultivar Performance in the Four Corners Region of New Mexico in 2010–12". HortTechnology 23, n. 5 (ottobre 2013): 699–709. http://dx.doi.org/10.21273/horttech.23.5.699.

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Commercial wine grape (Vitis sp.) production in northwestern New Mexico and the greater Four Corners region is now supported by four wineries. The challenges of growing grape vines in northwestern New Mexico include cold winter temperatures and killing spring frosts exacerbated by a semiarid climate and elevations exceeding 1700 m. Nineteen nongrafted European wine grape (Vitis vinifera) and interspecific hybrid wine grape cultivars were planted in 2007 and evaluated between 2010 and 2012. Among European wine grape cultivars, Agria, Malbec, Sangiovese, Viognier, Müller-Thurgau, and Sauvignon Blanc performed poorly or failed altogether. Interspecific hybrid cultivars Baco Noir, Kozma 55, Leon Millot, Chardonel, Seyval Blanc, Siegfried, Traminette, Valvin Muscat, and Vidal Blanc showed greater adaptability to a high-elevation intermountain western U.S. site, yielding on greater than 71% of their vines in each year (except Kozma 55 which only produced on 38% of its vines in 2012 due to severe spring frost damage). We speculate that fruit-bearing shoots on these vines arose from latent buds that survived when primary buds were killed from spring frost events. Once vines were established, grape berry sugar and pH appeared to be within acceptable ranges (3-year mean above 21% soluble solids and juice pH of 3.2), suggesting regional potential to produce favorable wines within acceptable commercial wine grape production ranges. Selection of sites without considerable frost risk and other mesoclimate variances is critical when considering vineyard establishment at high-elevation locations.

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Heuvel*, Justine E. Vanden, Jessica L. Robidoux e Catherine C. Neto. "Leaf Carbohydrate Concentration Affects Development of Phenolic Compounds in Grape Berries". HortScience 39, n. 4 (luglio 2004): 761B—761. http://dx.doi.org/10.21273/hortsci.39.4.761b.

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Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season. Light environment of the fruit clusters was not affected by defoliation. Seven days following defoliation, half of the vines were destructively harvested for carbohydrate analysis, while the remaining vines were kept for fruit analysis at maturity. Defoliation of vines at berry set and veraison significantly reduced TNSC concentration in the leaf tissue. Partial defoliation of vines at berry set reduced total flavonols by 24%, total anthocyanins by 33%, and total phenolics by 13% in the fruit compared to the control vines. At veraison, partial defoliation of vines reduced total flavonols by 8%, anthocyanins by 43%, and did not affect total phenolics. While flavonol and total phenolic content was not affected by defoliation 7 days prior to harvest, total anthocyanins were increased by 39%, although leaf TNSC concentration was not affected. Concentration of total flavonols and anthocyanins were positively correlated with TNSC in the leaves (r = 0.53 and r = 0.73, respectively) while total phenolic content was not correlated with TNSC. These results indicate that development of anthocyanins and flavonols in fruit is linked to carbohydrate availability from vegetative tissues during berry set and veraison.

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Ferree, D., T. Steiner, J. Gallander, D. Scurlock, G. Johns e R. Riesen. "Performance of 'Seyval Blanc' Grape in Four Training Systems Over Five Years". HortScience 37, n. 7 (dicembre 2002): 1023–27. http://dx.doi.org/10.21273/hortsci.37.7.1023.

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Own-rooted 'Seyval Blanc' vines were evaluated over 5 years in the following training systems: bilateral cordon, bilateral cordon sylvos (sylvos), upright cordon-spur pruned, and upright cordon-cane pruned. Vines in all systems were spaced 1.8 x 2.7 m and were shoot thinned to 40 shoots and cluster thinned to one cluster per shoot. Cumulative yields over 5 years of the upright cordon systems were higher than vines in the sylvos system. Average weight of cane prunings was higher in the upright cordon vines than in all other systems. Vines trained to the sylvos system had more canopy gaps, less Botrytis bunch rot, and higher juice soluble solids than other systems in some years. The chemical constituents of the must and wine or evaluation by tasting showed little influence of training system.

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Più fonti

Tesi sul tema "Grape vines"

Espach, Yolandi. "The detection of mycoviral sequences in grapevine using next-generation sequencing". Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80025.

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Thesis (MSc)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: Metagenomic studies that make use of next-generation sequencing (NGS) generate large amounts of sequence data, representing the genomes of multiple organisms of which no prior knowledge is necessarily available. In this study, a metagenomic NGS approach was used to detect multiple novel mycoviral sequences in grapevine phloem tissue. Individual sequencing libraries of doublestranded RNA (dsRNA) from two grapevine leafroll diseased (GLD) and three shiraz diseased (SD) vines were sequenced using an Illumina HiScanSQ instrument. Over 3.2 million reads were generated from each of the samples and these reads were trimmed and filtered for quality before being de novo assembled into longer contigs. The assembled contigs were subjected to BLAST (Basic Local Alignment Search Tool) analyses against the NCBI (National Centre for Biotechnology Information) database and classified according to database sequences with which they had the highest identity. Twenty-six putative mycovirus species were identified, belonging to the families Chrysoviridae, Endornaviridae, Narnaviridae, Partitiviridae and Totiviridae. Two of the identified mycoviruses, namely grapevine-associated chrysovirus (GaCV) and grapevine-associated mycovirus 1 (GaMV-1) have previously been identified in grapevine while the rest appeared to be novel mycoviruses not present in the NCBI database. Primers were designed from the de novo assembled mycoviral sequences and used to screen the grapevine dsRNA used for sequencing as well as endophytic fungi isolated from the five sample vines. Only two mycoviruses, related to sclerotinia sclerotiorum partitivirus S and chalara elegans endornavirus 1 (CeEV-1), could be detected in grapevine dsRNA and in fungus isolates. In order to validate the presence of mycoviruses in grapevine phloem tissue, two additional sequencing runs, using an Illumina HiScanSQ and an Applied Biosystems (ABI) SOLiD 5500xl instrument respectively, were performed. These runs generated more and higher quality sequence data than the first sequencing run. Twenty-two of the putative mycoviral sequences initially detected were detected in the subsequent sequence datasets, as well as an additional 29 species not identified in the first HiScanSQ sequence datasets. The samples harboured diverse mycovirus populations, with as many as 19 putative species identified in a single vine. This indicates that the complete virome of diseased grapevines will include a high number of mycoviruses. Additionally, the complete genome of a novel endornavirus, for which we propose the name grapevine endophyte endornavirus (GEEV), was assembled from one of the second HiScanSQ sequence datasets. This is the first complete genome of a mycovirus detected in grapevine. Grapevine endophyte endornavirus has the highest sequence similarity to CeEV-1 and is the same virus that was previously detected in fungus isolates using the mycovirus primers. The virus was detected in two fungus isolates, namely Stemphylium sp. and Aureobasidium pullulans, which is of interest since mycoviruses are not known to be naturally associated with two distinctly different fungus genera. Mycoviral sequence data generated in this study can be used to further investigate the diversity and the effect of mycoviruses in grapevine.
AFRIKAANSE OPSOMMING: Metagenomiese studies, wat gebruik maak van volgende-generasie volgordebepalingstegnologie, het die vermoë om die genetiese samestelling van veelvoudige onbekende organismes te bepaal deurdat dit groot hoeveelhede data genereer. Die bogenoemde tegniek was in hierdie studie aangewend om aantal nuwe mikovirusse in die floëem weefsel van wingerd te identifiseer. Dubbelstring-RNS was gesuiwer vanuit twee druiwestokke met rolbladsiekte en drie met shirazsiekte en Illumina HiScanSQ instrument is gebruik om meer as 3.2 miljoen volgorde fragmente te genereer van elk van die monsters. Lae-kwaliteit volgordes was verwyder en die oorblywende kort volgorde fragmente was saamgestel om langer konstrukte te vorm wat met behulp van BLAST soektogte teen die NCBI databasis geïdentifiseer kon word. Ses-en-twintig mikovirus spesies, wat aan die families Chrysoviridae, Endornaviridae, Narnaviridae, Partitiviridae en Totiviridae behoort, was geïdentifiseer. Twee van die geïdentifiseerde mikovirusse, naamlik grapevine-associated chrysovirus (GaCV) en grapevine-associated mycovirus 1 (GaMV-1), was voorheen al in wingerd gekry terwyl die res nuwe mikovirusse is wat tans nie in die NCBI databasis voorkom nie. Inleiers was ontwerp vanaf die saamgestelde mikovirus basisvolgordes en gebruik om wingerd dubbelstring-RNS sowel as swamme wat vanuit die wingerd geïsoleer is te toets vir die teenwoordigheid van hierdie mikovirusse. Slegs twee mikovirusse, wat onderskeidelik verwant is aan sclerotinia sclerotiorum partitivirus S en chalara elegans endornavirus 1 (CeEV-1), kon deur middel van die inleiers in wingerd en swam isolate geïdentifiseer word. Twee addisionele volgordebepalingsreaksies, wat gebruik gemaak het van die Illumina HiScanSQ en ABI SOLiD 5500xl volgordebepalingsplatforms, was gebruik om die teenwoordigheid van mikovirusse in wingerd te bevestig. Groter hoeveelheid volgorde fragmente was geprodusser wat ook van hoër gehalte was as dié van die eerste volgordebepalingsreaksie. Twee-en-twintig mikovirus spesies kon weer geïdentifiseer word, sowel as 29 spesies wat nie in die eerste HiScanSQ basisvolgorde datastelle gevind was nie. Die wingerdstokke wat in hierdie studie ondersoek was, het hoë diversiteit van mikovirusse bevat aangesien daar tot 19 mikovirus spesies in enkele wingerdstok geïdentifiseer was. Dit is aanduiding dat volledige virus profiele van siek wingerdstokke aantal mikovirusse sal insluit. Die vollengte genoomvolgorde van voorheen onbekende endornavirus was saamgestel vanuit een van die tweede HiScanSQ volgorde datastelle. Dit is die eerste mikovirus wat in wingerd gevind word waarvan die volledige genoomvolgorde bepaal is en ons stel die naam grapevine endophyte endornavirus (GEEV) voor vir hierdie virus. Grapevine endophyte endornavirus is die naaste verwant aan CeEV-1 en is dieselfde virus wat voorheen in wingerd dubbelstring-RNS en swam isolate gevind was deur middel van die mikovirus inleiers. Swam isolate waarin GEEV gevind is, was geïdentifiseer as Stemphylium sp. en Aureobasidium pullulans. Dit is van belang dat GEEV in twee swam isolate gevind is wat aan verskillende genusse behoort aangesien hierdie verskynsel nog nie voorheen in die natuur gevind is nie. Mikovirus nukleiensuurvolgordes wat in hierdie studie bepaal was kan gebruik word in toekomstige studies om die verskeidenheid en impak van mikovirusse in wingerd verder te ondersoek.
National Research Foundation (NRF)
Stellenbosch University

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Ferreira, Natália Fauvrelle. "Quintas do Douro-as arquitecturas do vinho do Porto". Master's thesis, Instituições portuguesas -- UP-Universidade do Porto -- -Faculdade de Letras, 1999. http://dited.bn.pt:80/29223.

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Jacometti, Marco Alexander Azon. "Enhancing ecosystem services in vineyards to improve the management of Botrytis cinerea". Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070126.115223/.

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Organic mulches and cover crops mulched in situ were assessed for their effects on B. cinerea primary inoculum and disease levels in inflorescences at flowering and/or bunches at harvest. Organic mulches were used to enhance biological degradation of vine debris to reduce levels of B. cinerea primary inoculum the following season. Four mulch types (anaerobically and aerobically fermented marc (grape pressings), inter-row grass clippings and shredded office paper) were applied under ten-year-old Riesling vines in a ten-replicate randomized block design in New Zealand over two consecutive years. Plastic mesh bags, each containing naturally infected vine debris, were placed under vines on bare ground (control) and at the soil-mulch interface, in winter (July) 2003 and 2004. In each year, half the bags were recovered at flowering (December) and the remainder at leaf plucking (February), for assessment of B. cinerea sporulation from the vine debris and debris degradation rate. Bait lamina probes, which measure soil biological activity, were placed in the soil-mulch interface three weeks before each of the two bag-recovery dates in both years and were then removed and assessed at the same times as were the bags. All mulches led to a reduction in B. cinerea sporulation. This reduction was significantly correlated with elevated rates of vine debris decomposition and increased soil biological activity. Over both years, compared with the controls, all treatments gave a 3-20-fold reduction in B. cinerea sporulation, a 1.6-2.6-fold increase in vine debris degradation and in the two marc and the paper treatments, a 1.8-4-fold increase in activity of soil organisms. The mulches also altered vine characteristics and elevated their resistance to B. cinerea through changes to the soil environment. Functional soil biological activity, as measured by Biolog Ecoplates and bait lamina probes, was increased 2-4 times in the two marc and paper treatments, compared with the control, an effect relating to the elevated soil moisture and reduced temperature fluctuations under these mulches. Soil nutrient levels and the C:N ratios were also affected in these treatments. The mulched paper lowered vine canopy density by up to 1.4 times that of the other treatments, an effect which probably led to elevated light penetration into the canopy and consequent increased canopy temperature, photosynthesis and lowered canopy humidity. These changes to soil and vine characteristics increased grape skin strength by up to 10% in the paper treatment and sugar concentrations by 1.2-1.4 °Brix in the two marc and paper treatments. The severity of B. cinerea infections in the anaerobic marc, aerobic marc and paper treatments were reduced to 12%, 3% and 2.2% of the control, respectively, in field assessments averaged over two consecutive harvests. Cover crops mulched in situ had similar effects to those of the organic mulches, increasing soil biological activity and reducing B. cinerea primary inoculum and the severity of B. cinerea infection in grapes at harvest (2006). Inter-row phacelia and ryegrass were mulched in winter 2005 and compared with a bare ground control, under 10-year-old Chardonnay vines in a ten-replicate randomized block design. Functional soil biological activity increased by 1.5-4.5 times in the two cover crop treatments compared with the control, an effect possibly related to elevated soil moisture in these treatments. This increase in soil moisture and soil biological activity increased vine debris degradation, reduced B. cinerea primary inoculum on the debris and decreased B. cinerea severity at flowering (December 2005) and harvest (April 2006). These results show the potential of organic mulches and cover crops mulched in situ to enhance soil ecosystem services and improve the sustainability of viticultural practices.

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Khairnar, Kaushal. "Effect of different organic amendments on soil quality, vines growth, grape production and wine quality of mechanically pruned vineyards". Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8632.

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Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia
The experiment with an aim to study the effect of pruning types and effect of different types of organic amendments on soil quality, vine growth, grape production and wine quality was conducted in two sites located in Vilar and Sardoal region of Portugal. The pruning treatments included manual spur (MAN) and mechanical hedge (MEC) type of pruning and types of organic amendments applied were biochar (BIOC), municipal solid waste compost (RSUC), cattle manure (ESTR), sewage sludge (ETAR) and control treatment (TEST). The treatment effects were analyzed for chemical composition, mineral content and heavy metals content and sensorial analysis of wine samples. The analysis results show that there was no significant effect of type of pruning on wine composition except pH, total acidity, alcohol content, calcium and total nitrogen content of wine sample. Similar trend was also followed with the application of organic amendments; the composition of wine remained unchanged by the use of organic amendments except some effect on pH, total acidity, volatile acidity, total anthocyanins and potassium content of wine samples. There was no significant increase in the heavy metals content of wine samples after the treatment of organic amendment. The manual pruning generally showed higher content compared to mechanical pruning due to less number of bunches retained per shoots. Wine composition was more influenced by the site specific characters and climatic conditions than the effect of treatment applied. Sensory analysis along with chemical analysis shows that mechanical pruning can be used without having much significant effect on grape composition when sufficient yield compensation is achieved. Treatment which supplied higher amount of nitrogen (ETAR and ESTR) was generally marked by more negative sensory perception such as vegetal characters in wine. On the face of climate change and increased competitive pressure use of mechanical pruning can be good strategy to reduce the cost of grape production and organic amendment can be applied to soil with an aim of increasing organic matter contents of soil. But the care should be taken to avoid excessive supply of nitrogen in order to avoid negative effect on wine composition over longer period of time. So the supply of amendment should be managed according to vine and soil nutritional status

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Hickey, Cain Charles. "Vines of different capacity and water status alter the sensory perception of Cabernet Sauvignon wines". Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/42667.

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Reducing disease and increasing fruit quality in vigorous vineyards with dense canopies is demanding of time and resources; unfortunately, vineyards of this nature are common in humid environments. This study investigated the effectiveness with which vine capacity and water status could be regulated as well as if they related to fruit quality and wine sensory perception. The treatments regulating vine size and water status were under-trellis groundcover, root manipulation, rootstocks, and irrigation. Treatments were arranged in a strip-split-split plot design before the introduction of the irrigation treatment resulted in incomplete replication in each block. Treatment levels were under-trellis cover crop (CC) compared to under-trellis herbicide (Herb); root restriction bags (RBG) compared to no root manipulation (NRM); three compared rootstocks (101-14, 420-A, riparia Gloire); low water stress (LOW) compared to high water stress (HIGH). Vines grown with RBG and CC regulated vegetative growth more so than conventional treatments, resulting in 56% and 23% greater cluster exposure flux availability (CEFA). High water stress (HIGH) and RBG reduced stem water potential and discriminated less against 13C. Vines grown with RBG and CC consistently reduced harvest berry weight by 17 and 6% compared to conventional treatments. Estimated phenolics were consistently increased by RBG and were correlated with berry weight, vine capacity and CEFA. Sensory attributes were significantly distinguishable between wines produced from vines that differed in both vine capacity and water status, amongst other responses. Treatments have been identified that can alter the sensory perception of wines, with the potential to improve wine quality.
Master of Science

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Wah, Yan Fong Wan Chow. "Viroids in grapevines : transmission via seeds and persistence in meristem-regenerated vines". Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phw136.pdf.

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Bibliography: leaves 127-152. The aim of this work is to study viroids in grapevines, particularly their vertical transmission via seeds, during meristem culture and micropropagation. There was also an attempt to produce viroid-free vines by shoot apical meristem culture (SAMC).

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Campbell, James Alexander, e mikewood@deakin edu au. "Physiology and biochemistry of budburst in Vitis vinifera". Deakin University, 1993. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20060808.123121.

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Both the physiological and biochemical control of budburst in the grapevine, Vitis Vinifera L. were investigated. It was found that the accuracy of a predictive model for grapevine budburst based on ambient temperature was limited under the experimental conditions. There was a significant correlation of 4.7 ± 0.3 days between the days of maximal xylem exudation and budburst over the 3 years of investigation. The co-relationships between daily xylem exudate volume and a range of environmental parameters were considered. It was found that soil temperature was highly correlated against daily xylem exudation. Ambient temperature and soil moisture were significantly correlated with xylem exudation, however the coefficients of correlation were much lower than that of soil temperature. Rainfall showed only a very limited correlation with daily xylem exudate flow. Seasonal variations in the pH and the carbohydrate and inorganic nutrient concentrations of xylem exudate were investigated. Exudate carbohydrate concentrations fell from 660 µM before the day of maximal xylem exudation to zero levels within 4 weeks. Xylem exudate pH was found to consistently fall to a minimum at the time of maximal exudate flow. Exudate concentrations of the metallic cofactors Ca, K, Mg, Mn and Zn varied directly with daily exudate flow, suggesting some sort of flow-dependent mobilisation of these nutrients. A growth promontory oligosaccharide fraction was prepared by partial acid hydrolysis of grapevine primary cell wall material. This fraction significantly increased control growth of the Lemna minor L. bioassay over a limited window of bioactivity. A growth inhibitory oligosaccharide fraction, similar in activity to abscisic acid was isolated from grapevine xylem exudate prior to budburst. The exudate concentration or efficacy of this substance declined after budburst such that there was no apparent growth inhibition. A model is proposed for grapevine budburst whereby an oligosaccharide growth inhibitor is gradually removed from the xylematic stream under the effects of soil temperature, allowing the surge of metabolic activity and vegetative growth that constitute budburst.

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Winkler, Tobias. "Empirical models for grape vine leaf area estimation on cv. Trincadeira". Master's thesis, ISA-UL, 2016. http://hdl.handle.net/10400.5/13008.

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Mestrado Vinifera Euromaster - Viticulture and Enology - Instituto Superior de Agronomia - UL / Institut National D'Etudes Superieures Agronomiques de Montpellier
Estimating a Vineyard’s leaf area is of great importance when evaluating the productive and quality potential of a vineyard and for characterizing the light and thermal microenvironments of grapevine plants. The aim of the present work was to validate the Lopes and Pinto method for determining vineyard leaf area in the vineyards of Lisbon’s wine growing region in Portugal, with the typical local red grape cultivar Trincadeira, and to improve prediction quality by providing cultivar specific models. The presented models are based on independent datasets of two consecutive years 2015 and 2016. Fruiting shoots were collected and analyzed during all phenological stages. Primary leaf area of shoots is estimated by models using a calculated variable obtained from the average of the largest and smallest primary leaf area multiplied by the number of primary leaves, as presented by Lopes and Pinto (2005). Lateral Leaf area additionally uses the area of the biggest lateral leaf as predictor. Models based on Shoot length and shoot diameter and number of lateral leaves were tested as less laborious alternatives. Although very fast and easy to assess, models based on shoot length and diameter were not able to predict variability of lateral leaf area sufficiently and were susceptible to canopy management. The Lopes and Pinto method is able to explain a very high proportion of variability, both in primary and lateral leaf area, independently of the phenological stage, as well as before and after trimming. They are inexpensive, universal, practical, non-destructive methods which do not require specialized staff or expensive equipment
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Pasquier, Grégory. "Etude de l’impact de l’Esca sur la qualité des raisins par une approche protéomique". Thesis, Bordeaux 2, 2012. http://www.theses.fr/2012BOR21909/document.

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La vigne est sensible à de nombreuses maladies cryptogamiques qui vont altérer la qualité des raisins et des vins. Depuis plusieurs années, l’Esca est devenue un fléau pour la viticulture moderne, car elle est responsable de la mort des pieds de vigne lorsqu’elle se présente sous forme apoplectique. Sa forme chronique est liée à la présence d’un cortège de champignons pathogènes dans le tronc et les bras, qui vont provoquer le plus souvent des symptômes foliaires. L’altération de la photosynthèse que cela provoque, va avoir des conséquences sur la maturation du fruit. Cependant, peu de travaux de recherche ont été menés pour caractériser précisément l’impact de cette maladie sur le métabolisme et la composition chimique des baies de raisin. Notre étude avait pour but d’apprécier, grâce à une approche protéomique, les conséquences de cette maladie sur la qualité des raisins. Nos travaux ont permis de mettre en évidence que l’expression de symptômes foliaires d’Esca provoque une modification d’abondance des protéines liées aux mécanismes de défense et de stress oxydatif de la pellicule du raisin. Il est également observé un changement de capacité antioxydante par modulation des teneurs en peroxyde d’hydrogène, en glutathion ou en pyridoxine. Les concentrations en molécules d’intérêt œnologique comme les acides aminés, les amines biogènes ou les tannins sont également modifiées en présence de symptômes foliaires d’Esca
The vine is susceptible to many fungal diseases that will affect the quality of grapes and wines. For several years, Esca has become the bane of modern viticulture because it is responsible for the death of the vines when presented in the form apoplectic. Its chronic form is associated with the presence of a procession of pathogenic fungi in the trunk and arms that will most often cause leaf symptoms. The alteration of photosynthesis that this causes will affect fruit ripening. However, little research has been conducted to characterize precisely the impact of this disease on the metabolism and chemical composition of grape berries. Our study aimed to assess, using a proteomic approach the disease's impact on the quality of grapes and get specific markers. Our work allowed us to demonstrate that the expression of foliar symptoms of Esca causes a change in abundance of proteins related to defense mechanisms and oxidative stress in the grape skin. It is also observed a change in antioxidant capacity by modulating levels of hydrogen peroxide, glutathione or pyridoxine. The concentrations of molecules of oenological interest such as amino acids, biogenic amines or tannins are also modified in the presence of foliar symptoms of Esca

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Curtis, Meilin Chung. "Good Grapes - Good Wine". Digital Commons @ East Tennessee State University, 2010. https://dc.etsu.edu/etd/1759.

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Good grapes are required to make good wine. Quality wines start in quality vineyards. Vineyard design, installation, and operation, including site location, trellis options, vine selection, and canopy management, along with when to harvest are discussed. While winemaking is the final phase in the pursuit of the winemaker's passion, it is but a simple formula. The beginning of a good wine is in a good vineyard. This study includes a financial projection for a 10-acre vineyard as well as for starting an onsite, complementary sized winery. Even though many small-to-medium vineyards-to-wineries have started over the last decade, the reason to enter into this type of business is not profit, but passion. Profits are relatively small for the time and labor investment, but the unique wine creations that result are amazing, for the winemaker and the one who enjoys the result.

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Libri sul tema "Grape vines"

Pongrácz, D. P. Rootstocks for grape-vines. [Totowa, N.J: Barnes & Nobles Books, 1985.

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Vines, grapes and wines: The wine drinker's guide to grape varieties. London: M. Beazley, 1986.

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(Firm), T. C. Robinson. T.C. Robinson's catalogue of small fuits and grape vines, Owen Sound, Ont. [Owen Sound, Ont.?: s.n., 1994.

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Kerridge, George. Vines for wines: A wine lover's guide to the top wine grape varieties. Collingwood, Vic: CSIRO, 2005.

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Kerridge, George. Vines for wines: A wine lover's guide to the top wine grape varieties. Collingwood, Vic: CSIRO, 2005.

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Leslie, George. Periodical descriptive catalogue of fruit trees, ornamental trees and shrubs, roses, dahlias, grape vines, minor fruits, &c.: Cultivated and for sale at the Toronto Nursery ... [Toronto?: s.n.], 1985.

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Leslie, George. Descriptive catalogue of fruit trees, ornamental trees and shrubs, roses, dahlias, grape vines, minor fruits, &c.: Cultivated and for sale at the Toronto Nurseries, King Street East. [Toronto?: s.n., 1986.

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Vines, grapes, and wines. New York: Knopf, 1986.

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Grapes of death: A Tangled Vines mystery. Waterville, Maine: Thorndike Press, 2014.

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Capitoli di libri sul tema "Grape vines"

Vieri, Marco, Daniele Sarri, Stefania Lombardo, Marco Rimediotti, Riccardo Lisci, Valentina De Pascale, Eleonora Salvini, Carolina Perna e Andrea Pagliai. "Vineyards production cycle with SPA technologies". In Manuali – Scienze Tecnologiche, 10. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-044-3.10.

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The use of Precision Agriculture in the vineyard chain has had a strong evolution over the last years, due to the need to risks control derived by pest and climate change. The great variability of the specific environment, dimension and infrastructure have determined more research development than market ready technologies, in comparison with what is happened in tillage crops. In viticulture, pest and climate dangerous event risk control, with IoT technologies is the core of innovation, then there is the vigour control of the vines by monitoring an agronomical management. For the high value chain of wine traceability and sustainability, key indexes are fundamental. Digital and high tech territorial platforms are essential to increase PA technologies acquisition in grape and wine value chain.

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Fischer, Jochen, e Eckhard Thines. "Secondary Metabolites of Fungal Vine Pathogens". In Biology of Microorganisms on Grapes, in Must and in Wine, 165–85. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60021-5_7.

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Hopsch, Lena. "Small Talk with a Grape Vine: Presence and the Sensuous Depth of Being". In Eco-Phenomenology: Life, Human Life, Post-Human Life in the Harmony of the Cosmos, 359–66. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77516-6_28.

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Etchebarne, F., H. Ojeda e A. Deloire. "Grape Berry Mineral Composition in Relation to Vine Water Status & Leaf Area/Fruit Ratio". In Grapevine Molecular Physiology & Biotechnology, 53–72. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2305-6_3.

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Troncoso, A., A. Villegas, C. Mazuelos e M. Cantos. "Growth and mineral composition of grape-vine rootstock cultured in vitro with different levels of ammonium nitrate". In Plant Nutrition — Physiology and Applications, 653–54. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0585-6_110.

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Dalton, David R. "Grapevine from Hardwood Cuttings". In The Chemistry of Wine. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190687199.003.0011.

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Rooted plants can often be obtained and transferred from one environment into another either in order to increase the number of vines producing a specific grape in a vineyard or to introduce a new variety or propagate a new cultivar. It has been found that some vines can be grown from hardwood cuttings. The technique of hardwood cutting involves removing a cane (Figure 4.1, a and b) from a successful vine once the vine has gone dormant for the winter, trimming it appropriately, and then planting it in well-fertilized soil either with or without growth stimulants (i.e., phytohormones, vide supra). It is clear that the conditions of planting, reported by various sources, are a function of variety and terroir. Interestingly, it appears that the cutting, which may have been grown on a rootstock different from the variety of grape produced, will produce roots that are true to the variety of grape. Once the vine, from seed, grafting, or cane begins to grow, it must be “trained” so that its growth can be monitored and successful grape crops harvested. The training includes proper spacing of vines and the establishment of a trellis system or posts for each vine. Trellis systems are set up during the first or second year of the growth of the vine since harvesting of grape crops before the third year is rare. The trellis, which will need to bear the weight of the vine and grapes, is built much like a fence. Thus, the row of grape vines is held up by end posts at the end of the row and line posts about 20 feet apart between the ends. Usually, there is a line post for every two or three vines with some species needing more space than others. Generally the end posts are thick treated wood, concrete, or steel and are strongly anchored. The line posts are thinner, and the trellis itself is made of twelve (12) gauge or heavier wire with the number of wires a function of the weight to be supported and the height to which the grapes are to be grown.

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"Introduction. Grape Culture, National Culture". In Empire of Vines, 1–16. University of Pennsylvania Press, 2014. http://dx.doi.org/10.9783/9780812208900.1.

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"1. Tributaries of the Grape". In Empire of Vines, 17–61. University of Pennsylvania Press, 2014. http://dx.doi.org/10.9783/9780812208900.17.

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"The Cultivation of Grape Vines". In The Fruit of the Vine, 87–126. BRILL, 2000. http://dx.doi.org/10.1163/9789004369825_005.

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Dalton, David R. "Flowers". In The Chemistry of Wine. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190687199.003.0020.

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Generally, grape vines produce extraneous shoots (“suckers”) on the plant in addition to those growing beyond the few desired on the cordon wanted for proper vine growth. Generally, again, suckers are less fertile than the primary shoots, they crowd the canopy of the vine, and their growth utilizes resources required for proper growth of the primary shoots. Further, the chaotic growth makes it difficult to manage the harvest. A crowded canopy (as will be discussed subsequently) is not a healthy one for grape growth. As shown in Figures 12.1 and 12.2 and noted earlier, buds (the small part of the vine that lies between the vine’s stem and the leaf stem or petiole) can start alongside the beginning of leaves at the base of the apical meristem. The buds swell and eventually produce shoots. As the shoot grows the flowers appear on a stem from the node, from where leaves have also sprung. That is, grape nodes hold buds that grow into leaves and inflorescences or “clusters of flowers” (i.e., the reproductive portion of a plant) arranged on a smaller stem growing from the node. It is not yet clear, despite recognizing the flow of nutrients and auxins as well as changes in proteins, how, after vernalization (i.e., the ability to flower so that fruit can be set—but only after exposure cold), the plant decides which, leaf or stem bearing flowers, should sprout from the node. The fundamentals of the coming forth of the buds are often outlined as a three-step process. First there is the formation of uncommitted primordia (primordia refer to tissues in their earliest recognizable stages of development) called “anlagen” (from German, in English, “assets” or “facilities”) at the apices of lateral buds. Second, differentiation of anlagen to form inflorescence primordia or tendril primordia occurs. Finally, flowers form from the inflorescence primordia when activated by phytohormones, nutrients, and growth regulators and when the external conditions of light and temperature are correct.

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Atti di convegni sul tema "Grape vines"

Eccleston, Kimberley W., Ian G. Platt, E. C. Adrian Tan e Ian M. Woodhead. "Wave Interaction with Grape Bunches on Vines". In 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP). IEEE, 2018. http://dx.doi.org/10.1109/apcap.2018.8538038.

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DOBREI, Alin, Alina Georgeta DOBREI, Eleonora NISTOR, Sorin STANCIU, Mihaela MOATĂR e Florin SALA. "SUSTAINABILITY OF GRAPEVINE PRODUCTION THROUGH MORE EFFICIENT SYSTEMS OF SOIL MAINTENANCE AND AGRO-BIOLOGICAL INDICATORS". In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.022.

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Tillage practices in viticulture are very important, with major effects on quantitative and qualitative production, on vines phenology and stages of growth. In this study the aim was to identify the most appropriate vineyard floor management, located on flat land or mild slopes, with medium or high soils fertility. The research was carried out during 2011–2013 in the vineyard of the BUASVM Didactic Station from Timisoara and focusing exclusively on several variants of soil maintenance in order to replace the need for manual labor. Leaf area was estimated by concentric circles method and sugar concentration was evaluated by refractometry. Total acidity in must and wine was determined by titration. Grape yield was estimated by bunches counting and weighing, for each variety and productive potential (kg ha-1) was appreciated by multiplying the average yield per vine with the number of vines per hectare. Statistical analysis was performed using GraphPad Prism 6. Performance of Burgundy variety for superior red wines group and Silvania table grape variety – with a medium ripening, were analyzed in the experiment. For both Burgundy and Silvania varieties the sixth variant (V6–bare soil by tillage middles row (tractor and rotary hoe)/rotary hoe undervine (tractor and adjustable offset rotary tiller) registered the highest grape yield during the research. The lowest grape yield fulfils to the seventh variant of vineyard floor management. Burgundy variety had the average must sugar content of 195 ± 4.27 g l-1 and that of the leaf area of 7.09 ± 0.58 m2 while in Silvania variety the average of grape must acidity was 4.66 ± 0.35 g l-1 H2SO4 and the leaf area of 7.42 ± 0.51 m2/vine. Between must sugar content and leaf area, in Burgundy and Silvania variety has been established a significant positive linear correlation (r = 0.94 ***) and (r = 0.88 **; p <0.001) respectively, variables being virtually indistinguishable.

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Eccleston, Kimberley W., Ian G. Platt, Abdolabbas Jafari, Armin Werner, Christopher Bateman, Ian M. Woodhead, Jaco Fourie, Jeffrey W. H. Hsiao e Peter Carey. "Observations from Radar Scans of Grape Vines Conducted Over a Growing Season". In 2019 IEEE Conference on Antenna Measurements & Applications (CAMA). IEEE, 2019. http://dx.doi.org/10.1109/cama47423.2019.8959769.

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Zúñiga, Carlos Espinoza, Lav R. Khot, Pete Jacoby e Sindhuja Sankaran. "Remote sensing based water-use efficiency evaluation in sub-surface irrigated wine grape vines". In SPIE Commercial + Scientific Sensing and Imaging, a cura di John Valasek e J. Alex Thomasson. SPIE, 2016. http://dx.doi.org/10.1117/12.2228791.

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Starčevic, Danijela, e Tatjana Jovanovic-Cvetkovic. "KOMPARATIVNE KARAKTERISTIKE INTERSPECIES HIBRIDA VINOVE LOZE I SORTE RIZLING RAJNSKI U USLOVIMA BANJALUČKE REGIJE". In SAVETOVANJE o biotehnologiji sa međunarodnim učešćem. University of Kragujevac, Faculty of Agronomy, 2021. http://dx.doi.org/10.46793/sbt26.161s.

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The latest generations of interspecies grapevine hybrids are increasingly attracting the attention of producers, especially due to increased production safety and reduced use of pesticides. The economic effect is evident, and the obtained product follows modern world trends in the production of safe food. The aim of this paper is to examine the technological characteristics of three varieties of Morava, Johanniter and Riesling Rhine in the conditions of the Banja Luka region. Varieties Morava and Johanniter belong to the group of interspecies hybrids. The mentioned varieties were compared with the Riesling Rhine variety, which belongs to the varieties of the noble vine and represents the standard for the comparison of the given varieties. The focus of the research was on examining the yield of varieties, the characteristics of grapes and berries, as well as the quality of grapes. Elements of the mechanical composition of grapes and berries were made according to the method of Prostoserd (1946), and the characteristics of grape juice (% Brix, titratable acidity and pH value) according to official OIV methods. The variety Johanniter had the lowest weight of grapes (73.85 g), and the variety Morava had the highest weight (128.61 g). The varieties Johanniter and Riesling Rhine had a relatively high sugar content in grape juice (22.1%), while the variety Morava had a high sugar content (25.93%).

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Huqi, Aris, Natasha Haka, Aurela Suparaku e Joana Koni. "Phytoseiid mites in diffrent grape vine cultivar." In The 5th International Virtual Conference on Advanced Scientific Results. Publishing Society, 2017. http://dx.doi.org/10.18638/scieconf.2017.5.1.416.

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Paulin, S., T. Botterill, J. Lin, X. Chen e R. Green. "A comparison of sampling-based path planners for a grape vine pruning robot arm". In 2015 6th International Conference on Automation, Robotics and Applications (ICARA 2015). IEEE, 2015. http://dx.doi.org/10.1109/icara.2015.7081131.

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BĂLĂCEANU, Cristina, Ana-Maria DRĂGULINESCU, Sabina BOSOC, Oana ORZA e George SUCIU. "Monitoring the Vineyard Health Using Internet of Things Sensors in Smart Agriculture – a Technical Report". In Air and Water – Components of the Environment 2021 Conference Proceedings. Casa Cărţii de Ştiinţă, 2021. http://dx.doi.org/10.24193/awc2021_12.

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In the last decade, massive implementation of detection devices that use the Internet of Things (IoT) has penetrated considerably in all areas, and the agricultural field is no exception. The article aims to provide an integrated vineyard management solution based on the Internet of Things technology in the Smart Viticulture domain. The monitored parameters for Smart Agriculture are the air temperature and humidity and soil and air humidity, which have a direct impact on grapes. The study region is at the viticulture station and the study period was from June to September in two the year 2019-2020. Vineyard perimeter includes the plantations located both on the right bank of the river Târnava Mare and on the river Târnava Mică, in a hilly area with kneaded relief, but very favorable for the culture of vines. The most common diseases of the vineyards are powdery mildew, downy mildew, and bunch rot. Moreover, the monitoring system aims to manage agricultural issues related to irrigations and analyze the measured parameters' effect, helping the farmers have healthy vineyards. Also, the paper addresses the need to achieve climate-adapted and more resilient farming, promoting better management tools based on objective data-driven decisions.

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Claster, William B., Maxwell Caughron e Philip J. Sallis. "Harvesting Consumer Opinion and Wine Knowledge Off the Social Media Grape Vine Utilizing Artificial Neural Networks". In 2010 European Modelling Symposium (EMS). IEEE, 2010. http://dx.doi.org/10.1109/ems.2010.109.

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Halili, Jeton. "TRANSLOCATION OF SOME HEAVY METALS FROM SOIL IN FRUIT - WINES OF THE GRAPE VINE VINEYARDS OF RAHOVEC". In 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/be5.v1/s20.070.

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