INFLUENCE OF PRUNING TIMES AND VARIOUS CHEMICALS ON YIELD AND QUALITY OF THOMPSON SEEDLESS GRAPES

2008 ◽  
pp. 191-200
Author(s):  
N.M. Salunkhe ◽  
T.B. Tambe ◽  
J.H. Kadam
Keyword(s):  
Thompson Seedless ◽  
Yield And Quality ◽  
Seedless Grapes

Micronutrients and Zn Solubilizing Bacteria on Yield and Quality of Grapes Variety Thompson Seedless

2005 ◽  
Vol 1 (1) ◽  
pp. 1-7 ◽  
Author(s):  
S. Rama Subramonia ◽  
K. Subbiah V.P. Dura . ◽  
U. Surendran .
Keyword(s):  
Thompson Seedless ◽  
Yield And Quality

scholarly journals PHYTOREGULATORS ON BUD FERTILITY AND CLUSTER QUALITY OF ‘THOMPSON SEEDLESS’ GRAPES GRAFTED ONTO ‘RAMSEY’ ROOTSTOCK

2017 ◽  
Vol 30 (1) ◽  
pp. 97-108 ◽  
Author(s):  
PATRÍCIA FERNANDA INÁCIO VILAR ◽  
◽  
EDER IGNÁCIO DE SOUZA ◽  
LAISE DE SOUSA SANTOS ◽  
EMANUEL ALMEIDA MARTINEZ ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Basal Region ◽  
Thompson Seedless ◽  
Fresh Material ◽  
Fertility Potential ◽  
Seedless Grapes ◽  
Solids Content ◽  
Cluster Quality

ABSTRACT The objective of this work was to evaluate the influence of Trinexapaque-ethyl (TrixE) and benzyladenine (BA) on the fertility of buds and the quality of bunches of „Thompson Seedless‟ grapes grafted onto „Ramsey‟ rootstock, in the Vale São do Francisco. The experimental design consisted of randomized blocks with 16 treatments (doses and number of applications of the plant regulators TrixE and BA), with four replications, each composed of three plants, with one plant per plot. The variables analyzed were: overall potential bud fertility, potential of the basal, median and apical branches of the plant; fertility of potential buds from the basal region of the basal and median branches; fertility of overall real buds, and of the median and apical branches; diameter of the basal, median and apical branches; Falker chlorophyll index a, b and total; sprouting buds, number of clusters per branch, clusters per plant, branches per plant; berry diameter, length, volume; fresh material mass; soluble solids content (SS), titratable acidity (AT) and SS/AT relationship; diameter, length, mass of fresh material from the clusters; shatter, fresh material mass of the rachis and rachis diameter . It was shown that the TrixE applied in isolation , one, two or three times in doses of 20 mg L -1, or associated with BA in a single application of 120 or 240 mg L-1, increased the rate of real fertility, but did notaffect the length of the clusters or the vegetative vigor of the plants.

scholarly journals Potential of Methyl Jasmonate as a Harvest Aid for ‘Thompson Seedless’ Grapes: Concentration and Time Needed for Consistent Berry Loosening

HortScience ◽  
2009 ◽  
Vol 44 (5) ◽  
pp. 1330-1333 ◽  
Author(s):  
Raquel González-Herranz ◽  
Kimberley A. Cathline ◽  
Matthew W. Fidelibus ◽  
Jacqueline K. Burns
Keyword(s):  
Vitis Vinifera ◽  
Methyl Jasmonate ◽  
Thompson Seedless ◽  
Fruit Abscission ◽  
Detachment Force ◽  
Fruit Drop ◽  
Seedless Grapes ◽  
Harvest Aid

The application of methyl jasmonate (MeJA) to grapes (Vitis vinifera L.) may decrease fruit detachment force (FDF) and promote the development of dry stem scars on the berries, both of which could improve the quality of machine-harvested raisin grapes. However, treatment with MeJA also promotes preharvest fruit drop, which is undesirable. Thus, experiments were conducted to determine how the concentration of MeJA applied and time after treatment affect FDF and abscission of grapes. Mature ‘Thompson Seedless’ grapevines were treated with one of five different solutions containing 0, 0.2, 2, 10, or 20 mm MeJA, and FDF and fruit abscission were monitored for ≈2 weeks. Treatment with 2 mm or less MeJA had inconsistent effects on FDF and did not promote abscission, whereas treatment with 10 to 20 mm MeJA reduced FDF within 2 to 3 days after treatment (DAT) and promoted abscission, which began on ≈3 DAT and persisted for ≈8 DAT. Thus, to optimize the use of MeJA as a harvest aid for ‘Thompson Seedless’ may require application of between 2 and 10 mm MeJA followed by harvest within 3 DAT.

scholarly journals Canopy Separation and Defoliation for Dry-on-the-vine (DOV) Raisins on Traditional Trellises

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 880B-880
Author(s):  
Matthew Fidelibus* ◽  
Steven Vasquez ◽  
Donald Katayama
Keyword(s):  
Vitis Vinifera ◽  
Ammonium Nitrate ◽  
Soluble Solids ◽  
Concentrated Solutions ◽  
Thompson Seedless ◽  
Calcium Ammonium Nitrate ◽  
Moisture Contents ◽  
Yield And Quality ◽  
Berry Size

Pruning efficiency, fruitfulness, and yield and quality of raisins of `Thompson Seedless' (Vitis vinifera L.) grapevines subjected to several canopy separation and defoliation treatments for DOV raisin production were evaluated. Canopy separation treatments, tested in vineyards at Easton, and at the Kearney Agricultural Center (KAC), Parlier, Calif., were as follows; horizontal canopy separation with vine sections of fruiting or renewal zones (Peacock), horizontal canopy separation with vine sections of fruiting zones of one vine adjacent to renewal shoots of the next vine (wave), or non-separated (control). Defoliation treatments included burning or blowing leaves (Easton), application of concentrated solutions of calcium ammonium nitrate or Etherel to leaves (KAC), or no defoliation (both vineyards). Canopy separation treatments did not affect berry size, soluble solids, or raisin yield. Vines subjected to Peacock training had more cluster layers than vines subjected to wave training, at Easton, and more cluster layers than vines subjected to control training at KAC. Canopy separation reduced harvest pruning time by 20% at Easton, but not at KAC. No treatments affected raisin moisture at Easton but, at KAC, raisins of vines trained in the Peacock style had 10% higher moisture contents at harvest than raisins of wave or control vines. Vines subjected to conventional training and leaf blowing had about 40% higher “B and better” raisin grades than vines with separated canopies that were not defoliated, and about 30% higher grades than vines with conventional training and leaf burning. However, raisins of vines subjected to blowing had about 60% more mold than raisins of non-defoliated vines. Defoliation treatments at KAC did not affect any variables measured.

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