EFFECT OF PACLOBUTRAZOL ON VEGETATIVE GROWTH, GRAPE QUALITY AND YIELD OF NAPOLEON TABLE GRAPE VARIETY

Our results show that the different cultivation methods have higher effect on the yield than on the grape quality. In 2007 the weather was extreme dry (from May to August only 195 mm precipitation was recorded) the straw mulch proved to be the best solution regarding the yield and the grape quality. Although no significant differences were observed in the sugar- and titratable acidity content of the must, the ratio of noble rotted berries was higher on the straw mulched plots. Straw mulch could conserve the moisture content of the soil and it seems to be contributed to the conformation of suitable microclimate for Botrytis infection, but for long distance conclusions further examinations need to be investigated. The less yield and ratio of rot was observed in case of barely covered vines and the vegetative growth of the grape was less intensive in case of these vines.

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Vine vigor, yield and grape quality assessment by airborne remote sensing over three years: Analysis of unexpected relationships in cv. Tempranillo

Spanish Journal of Agricultural Research ◽

10.5424/sjar/2015132-7809 ◽

2015 ◽

Vol 13 (2) ◽

pp. e0903 ◽

Cited By ~ 17

Author(s):

Irene Bonilla ◽

Fernando Martinez de Toda ◽

Jose Antonio Martínez-Casasnovas

Keyword(s):

Climate Change ◽

Remote Sensing ◽

Spatial Variability ◽

Vegetative Growth ◽

Multispectral Imagery ◽

Climate Conditions ◽

Ripening Process ◽

Stable Pattern ◽

Grape Quality ◽

High Spatial Variability

The prediction of grape composition is becoming more important due to the need of reducing the current levels of alcohol and pH of the wines, a problem that is exacerbated by climate change. This work presents a 3-year study of the spatial variability of grape composition in a rainfed Tempranillo vineyard located in Rioja (Spain). It is based on the acquisition of multispectral imagery at véraison (start of the ripening process); and zoning based on NDVI, to assess its performance for zonal management. The results reveal a high spatial variability within the plot, with a stable pattern over the years, even with very different climate conditions. NDVI was a good predictor of vegetative growth variables. However, the prediction of grape composition was more complex. Unexpectedly, anthocyanins were found to be higher in the highest vigor zone, which is probably related to the effects of climate change. This unexpected relationship is particularly discussed in the article.

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Increasing the yield and quality of ‘Muscat Yantarnyi’ grape variety when using domestic micro-fertilizers in Crimea

Magarach. Vinogradstvo i Vinodelie ◽

10.35547/im.2020.77.69.011 ◽

2020 ◽

pp. 142-147

Author(s):

Наталья Васильевна Алейникова ◽

Павел Александрович Диденко ◽

Владимир Николаевич Шапоренко ◽

Владимир Владимирович Андреев ◽

Светлана Валентиновна Левченко

Keyword(s):

Mineral Nutrition ◽

Climatic Conditions ◽

Table Grape ◽

Grape Variety ◽

The South ◽

Yield And Quality ◽

Western Zone ◽

Growth Economic

В статье приводятся результаты исследований 2018-2019 гг., проведенных в почвенно-климатических условиях Юго-западной зоны виноградарства Крыма, по оценке влияния отечественных микроудобрений на рост, хозяйственные и увологические показатели столового винограда сорта Мускат янтарный. Экспериментально доказано, что использование изучаемых систем минерального питания микроудобрениями Органомикс и Форрис при внекорневых обработках виноградной лозы позволило существенно увеличить урожайность в среднем на 9,4 % (1,7 т/га), массу грозди - на 9,5 % (13,1 г), объем прироста куста - на 8,3 % (261,9 см3), снизить «горошение ягод» в грозди на 8,6 % в сравнении с контролем. The article presents the results of studies of 2018-2019, conducted in the soil and climatic conditions of the South-Western zone of viticulture of Crimea, on the assessment of the influence of domestic micro-fertilizers on the growth, economic and uvological indicators of table grape variety ‘Muscat Yantarnyi’. It was experimentally proven that the use of the studied mineral nutrition systems with Organomix and Forris micro-fertilizers for foliar treatments of the vine allowed to increase significantly the yield by an average of 9.4% (1.7 t / ha), the weight of the bunch - by 9.5% (13.1 g), the volume of bush growth - by 8.3% (261.9 cm), to reduce the millerandage of the bunch by 8.6% in comparison with the control.

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GRAPE VARIETY OF REGAL SEEDLESS GROWN IN THE LOWER DON CONDITIONS

Izvestiâ Timirâzevskoj selʹskohozâjstvennoj akademii ◽

10.26897/0021-342x-2020-5-30-39 ◽

2020 ◽

pp. 30-39

Author(s):

S.I. KRASOKHINA ◽

Keyword(s):

Agricultural Research ◽

Consumer Preferences ◽

Table Grape ◽

Sugar Accumulation ◽

Grape Variety ◽

Good Taste ◽

Russian Research Institute ◽

Seedless Grape ◽

Economically Valuable Traits ◽

Market Promotion

Nowadays, table grape consumers prefer seedless grape varieties, so the market promotion of seedless varieties continues at a rapid pace. Responding to consumer preferences, the breeders have developed numerous various-flavour seedless varieties with large berries and bunches. The study purpose is to assess the prospects of cultivation and use in breeding of a new seedless Regal Seedless grape variety bred in South Africa. By origin, this is an intraspecific hybrid of the species V. vinifera L., with an early middle ripening period. The author carried out the variety study to assess agrobiological, economically valuable traits and properties and compiled a short ampelographic description. The study was carried out in 2017–2019 at the experimental vineyard of Ya.I. Potapenko All-Russian Research Institute for Viticulture and Winemaking – Branch of Federal Rostov Agricultural Research Center. The study focuses on non-irrigated covered and grafted vineyards, the Kober 5BB rootstock, the planting pattern of 3 × 1.5 m, and a fan-shaping thankless bush. As to a set of positive parameters (yield, high vendebility, natural seedlessness without the use of gibberellin, large size characteristics, and good taste), the Regal Seedless variety is of certain interest for industrial viticulture, and this variety can also be recommended for use in further breeding as a source of seedless and large berries. According to preliminary studies, the ripened berries of this variety should not be kept long on the bush to prevent peel browning and deterioration in vendebility. The variety is recommended as a highly commercial table grape without the PPP use, but it is not suitable for the production of raisins due to insufficient sugar accumulation. It is recommended that the variety should be grown in areas of sufficient moisture or as an irrigated crop.

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Effects of growth retardant application on grape quality of « Mavrodafni » grapevine variety

OENO One ◽

10.20870/oeno-one.2002.36.2.976 ◽

2002 ◽

Vol 36 (2) ◽

pp. 103

Author(s):

Eleftheria Zioziou ◽

Nektarios Tavernaraki ◽

Nikolaos Nikolaou

Keyword(s):

Soluble Solids ◽

Grape Variety ◽

Strong Decrease ◽

Vegetative Period ◽

Grapevine Variety ◽

Grape Quality ◽

Anthocyanin Concentration ◽

Randomized Experimental Design ◽

Berry Composition

The effects of bloom applications of 2-Chloroethyltrimethylammonium chloride (CCC) and Succinic acid-2,2-dimethylhydrazide (SADH) on fruit quality of Mavrodafni wine grape variety were studied. Over the vegetative period of 2000, sprays of 500 or 1 000 mg/l CCC and 3 000 or 6 000 mg/l SADH were applied, two weeks before bloom or at 20 p. cent of bloom in a completely randomized experimental design, replicated 10 times. Bunch and berry characteristics, berry composition, and phenolic maturity were measured at harvest. There were no differences between the two days of application. Berry number per bunch and per cm of rachis length, were increased by CCC 1 000 mg/l and SADH 6 000 mg/l treatments. Berry weight was decreased by all treatments with a greater reduction in CCC 1 000 mg/l treatment. Soluble solids were reduced by SADH treatment with a greater reduction in 6 000 mg/l of SADH and increased by CCC treatments at both concentrations. Anthocyanin concentration and extractability were increased in CCC at 1 000 mg/l treatments, while the extractability of grains tannins was reduced. A strong decrease of bud fertility was observed in 6 000 mg/l of SADH.

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Fluorescence-Sensor Mapping for the in Vineyard Non-Destructive Assessment of Crimson Seedless Table Grape Quality

Sensors ◽

10.3390/s20040983 ◽

2020 ◽

Vol 20 (4) ◽

pp. 983

Author(s):

Lorenza Tuccio ◽

Lucia Cavigli ◽

Francesca Rossi ◽

Olga Dichala ◽

Fotis Katsogiannos ◽

...

Keyword(s):

Table Grape ◽

Fluorescence Sensor ◽

High Yield ◽

New Approach ◽

East Central ◽

Mean Values ◽

Grape Quality ◽

Non Destructive ◽

North And South

Non-destructive tools for the in situ evaluation of vine fruit quality and vineyard management can improve the market value of table grape. We proposed a new approach based on a portable fluorescence sensor to map the ripening level of Crimson Seedless table grape in five different plots in the East, Central-North and South of the Macedonia Region of Greece. The sensor provided indices of ripening and color such as SFRR and ANTHRG correlated to the chlorophyll and anthocyanin berry contents, respectively. The mean ANTHRG index was significantly different among all the plots examined due to the occurrence of different environmental conditions and/or asynchronous ripening processes. The indices presented moderate, poor in some cases, spatial variability, probably due to a significant vine-to-vine, intra-vine and intra-bunch variability. The cluster analysis was applied to the plot with the most evident spatial structure (at Kilkis). Krigged maps of the SFRR, ANTHRG and yield were classified by k-means clustering in two-zones that differed significantly in their mean values. ANTHRG and SFRR were inversely correlated over 64% of the plot. SFRR appeared to be a potential useful proxy of yield since it was directly correlated to yield over 66% of the plot. The grape color (ANTHRG) was slightly higher over the low-yield zones with respect to the high-yield zones. Our study showed that the combination of anthocyanins and chlorophyll indices detected in the field on Crimson Seedless table grape by a portable fluorescence sensor can help in defining the best harvest time and the best areas for harvesting.

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