Spatiotemporal stability of management zones in a table grapes vineyard in Greece

2017 ◽  
Vol 8 (2) ◽  
pp. 510-514 ◽  
Author(s):  
E. Anastasiou ◽  
Z. Tsiropoulos ◽  
T. Balafoutis ◽  
S. Fountas ◽  
C. Templalexis ◽  
...  
Keyword(s):  
Weather Conditions ◽  
Quality Parameters ◽  
Wine Grapes ◽  
Management Zones ◽  
Table Grapes ◽  
Yield And Quality ◽  
Commercial Vineyard ◽  
Precision Viticulture ◽  
Non Destructive ◽  
Destructive Methods

Research on precision viticulture on table grapes is relative new compared to wine grapes. The aim of this study was to assess the spatiotemporal stability of yield and quality components in a vineyard of table grapes. The study was conducted in a commercial vineyard (1.4 ha) of table grapes for two successive cultivation years 2015 and 2016. Yield and quality parameters were assessed using destructive and non-destructive methods. The preliminary results revealed that spatiotemporal stability of management zones is affected by weather conditions and is different for each crop parameter, while NDVI presented good performance for delineating management zones.

Monitoring of Drosophila suzukii (Diptera: Drosophilidae) in Okanagan Valley vineyards, British Columbia, Canada, and assessment of damage to table and wine grapes (Vitaceae)

2020 ◽  
Vol 152 (4) ◽  
pp. 415-431
Author(s):  
Susanna Acheampong ◽  
Etienne Lord ◽  
D. Thomas Lowery
Keyword(s):  
British Columbia ◽  
Weather Conditions ◽  
Wine Grape ◽  
Drosophila Suzukii ◽  
Wine Grapes ◽  
Apple Cider ◽  
Table Grapes ◽  
Soft Fruit ◽  
Grape Cultivars ◽  
Okanagan Valley

AbstractSpotted-wing drosophila, Drosophila suzukii, (Matsumura) (Diptera: Drosophilidae), has become a serious pest of soft fruit in the Okanagan Valley of British Columbia, Canada since its detection in 2009. The study was conducted to determine the distribution of D. suzukii and damage levels in grapes. Apple cider vinegar-baited traps placed in table and wine grape (Vitis vinifera Linnaeus; Vitaceae) vineyards during 2011–2013 demonstrated that D. suzukii was numerous in all sites, with earliest emergence and highest numbers recorded in 2013. Drosophila suzukii were reared from intact and damaged table grapes and damaged wine grapes collected from the field, but not from intact wine grapes. Drosophila suzukii were reared in low numbers in 2011 from intact fruit of 11 wine grape cultivars exposed artificially in the laboratory. Susceptibility of intact wine grapes under laboratory conditions in 2011 when sour rot was widespread might relate in part to undetected infections of berries due to weather conditions. Identification of Drosophila Fallén species revealed that D. suzukii comprised a small portion of the total. Our results demonstrate that healthy wine grapes in the Okanagan Valley of British Columbia are largely undamaged by D. suzukii, while certain table grape cultivars should be protected from attack.

scholarly journals Using Soil and Foliar Applications of some Fertilizers to Improve the Yield and Quality Parameters of Table Grapes (Vitis vinifera L.)

2020 ◽  
Vol 77 (1) ◽  
pp. 1
Author(s):  
Hisham ABO-AHMEDEH ◽  
Amer MHASNEH ◽  
Hamzeh RAWASHDEH
Keyword(s):  
Foliar Application ◽  
Fertilizer Application ◽  
Quality Parameters ◽  
Control Treatment ◽  
Vitis Vinifera L ◽  
Foliar Fertilizer ◽  
Soil Application ◽  
Application Method ◽  
Table Grapes ◽  
Yield And Quality

The objective of the current study was to investigate the effect of soil and foliar application of some fertilizers on the yield and quality of table grapes cv. Alkdarri. Soil and foliar fertilizer application treatments included a control, Ca 200 g/vine, K 150 g/vine, N 200 g/vine, Ca 30 g/L, grow more INC fertilizer 10 g/L, K 20 g/L, and Cu 5 mg/L. Results indicate that soil and foliar fertilizer application increases quality and quantity of table grapes compared to control treatment. The highest berry diameter, a weight of 100 berries and a size of 100 berries were obtained in vines treated with Ca 200 g/vine, using the soil application method. The highest cluster weight was obtained in vines that were treated with K 150 g/vine, using the soil application method. The highest berry firmness was obtained in vines that were treated with K 20 g/L using the foliar application method. The highest pH and TSS were obtained in vines treated with Cu 5 mg/L, using the foliar application method. The highest fruit yield was found in vines that were treated with 150 g K.

scholarly journals Texture changes of vegetable cultivars measured by non-destructive methods

2005 ◽  
Vol 11 (2) ◽  
Author(s):  
V. Muha ◽  
S. Istella
Keyword(s):  
Quality Parameters ◽  
Harvest Date ◽  
Growing Period ◽  
Set Up ◽  
Irrigation Effects ◽  
Non Destructive ◽  
Destructive Methods

According to our experiments the tested group of non-destructive methods offers a useful tool not only to follow the texture changes of vegetables during storage but to characterize the firmness and vision parameters during the growing period as well. Advantages of these methods are: they are mobile, easy to set up, easy to use and quick. The suitable maturity state — and so the optimum harvest date also - can be determined by these methods. In addition, these methods can be built into sorting lines making possible to sort and classify great amounts of produces. These methods help the producer to offer homogenous products of controlled quality. They can be used for measuring different effects on vegetable's quality parameters (fertilization by different microelements, different irrigation effects on the product) as well.

scholarly journals Impact of Water Deficit during Fruit Development on Quality and Yield of Young Table Grape Cultivars

Horticulturae ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 45
Author(s):  
Carolin Weiler ◽  
Nikolaus Merkt ◽  
Simone Graeff-Hönninger
Keyword(s):  
Fruit Development ◽  
Phenolic Content ◽  
Quality Parameters ◽  
Table Grape ◽  
Soluble Solids ◽  
Internal Quality ◽  
Total Phenolic ◽  
Table Grapes ◽  
Yield And Quality ◽  
Grape Cultivars

Water limitation has a major effect on agricultural crop production, influencing yield as well as external and internal quality parameters of table grapes. Due to their high yield potential, table grapes have a particularly high risk for yield and quality losses when water is limited, but grapevines are known for high heterogeneity within cultivars. Therefore, we investigated the effect of prolonged water deficits (control, moderate, and severe deficit) during fruit development on yield and quality parameters of four different table grape cultivars (Vitis L.). Furthermore, we ranked their suitability for cultivation in areas suffering from water limitation. Up to 31% of irrigation water could be saved in comparison to the control, without significant negative effects on plant yield, berry size, or internal quality parameters, such as total soluble solids and total phenolic content. However, single bunch yield was highest at a moderate deficit and number of seeds in berries increased with the severity of deficit. Cultivar selection had the greatest influence on water consumption and mainly defined yield and quality parameters. The cultivar ‘Fanny’ produced the highest yields (195.17 g per plant), most bunches per plant (2.04), and biggest berries while cv. ‘Nero’ had the highest total soluble solids content (26.33 °Brix) and the highest total phenolic content (67.53 mg gallic acid equivalents per 100 g fresh weight). Overall, ‘Fanny’ was the most promising cultivar for cultivation under water-limited conditions during fruit development, without significant effects on yield and quality parameters.

EVOLUTION OF QUALITY PARAMETERS OF JONAGOLD APPLES BY MEANS OF NON-DESTRUCTIVE METHODS

1993 ◽  
pp. 63-66 ◽  
Author(s):  
J. Verreydt ◽  
E. Schrevens ◽  
J. Keulemans ◽  
J. De Baerdemaeker ◽  
F. Vervaeke
Keyword(s):  
Quality Parameters ◽  
Non Destructive ◽  
Destructive Methods

Spatial Variation in Blooming and Yield in an Apple Orchard, in Romania

2016 ◽  
Vol 10 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Gabriela Teodorescu ◽  
Virgil Moise ◽  
Aurelia Corina Cosac
Keyword(s):  
Spatial Variation ◽  
Precision Agriculture ◽  
Quality Parameters ◽  
Apple Orchard ◽  
Solid Content ◽  
Soluble Solid Content ◽  
Management Zones ◽  
Yield And Quality ◽  
Soluble Solid ◽  
Apple Quality

Abstract The aim of this study was to analyse the spatial variation of blooming, yield and quality parameters, in an apple orchard, by using precision agriculture tools. This study is a preliminary step in order to create management zones, to take the management decisions and made the evaluation of the applied practices. The study was conducted in the Research and Development Station for Pomology Voinesti, Dambovita, on the 0.9 ha orchard. The orchard consists in Florina apple trees and Generos pollinator. The surface was mapped with GPS and the yield of each tree was manually harvested and weighed. Apple quality was evaluated in terms of: firmness, soluble solid content, juice pH. Also, in spring was determined the number of flowers/tree and the exact period of flowering. The interpolated maps were created using Surfer 8 software and the correlations between yield and quality have been established; some quality characteristics are negatively correlated with yield, like firmness.

scholarly journals Forage Quality Evaluation

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Lucien CARLIER ◽  
Chris VAN WAES ◽  
Ioan ROTAR ◽  
Mariana VLAHOVA ◽  
Roxana VIDICAN
Keyword(s):  
Near Infrared ◽  
Animal Husbandry ◽  
Quality Parameters ◽  
Near Infrared Reflectance ◽  
Domestic Ruminants ◽  
In Vitro Technique ◽  
Protein Rich ◽  
Non Destructive ◽  
Destructive Methods

The challenge for the research in crop and animal husbandry is how to determine the quality of a speci¬fied crop as a forage for ruminants by the chemical analysis of only a small amount of sample". Since more than hundred years scientists try to give an answer to that question. The most applied is the Weende and Van Soest system, together with the digestibility in vitro technique developed by Tilley and Terry. During the last decennia also non destructive methods, like the Near Infrared Reflectance Spectroscopy NIRS, are used more frequently. Forages contain a lot of quality parameters (protein, fat, sugars, structural carbohydrates, vitamins, … but some of them contain also anti quality components (alkaloids, nitrates, …). The diet of domestic ruminants exists of more than only 1 component. Other diet components may interfere and mostly result in a synergism. The combination of a protein rich forage (legumes) with starch riches ones results in better animal productions than given as sole diet component. Fast and reliable non destructive methods are more attractive and acceptable than laborious, polluting and animal unfriendly ones.

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