scholarly journals DECAY CONTROL IN TABLE GRAPE CULTIVARS BY FUMIGATION WITH DECCODIONE SMOKE TABLETS FOR PROLONGING THE STORAGE LIFE

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 677d-677
Author(s):  
M. Ahmedullah
Keyword(s):  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Good Condition ◽  
Table Grape ◽  
High Relative Humidity ◽  
Viable Alternative ◽  
Thompson Seedless ◽  
Smoke Particles ◽  
Fumigation Chamber ◽  
Grape Cultivars

Fruit of table grape cvs. Black Monukka, Flame Seedless, Thompson Seedless and Himrod were fumigated with 2, 4 and 6 Deccodione tablets for 30 minutes in a fumigation chamber. Fruit was brought to the cold rooms and stored at 32 F and high relative humidity for upto 10 weeks. Decay control index, freshness of stems and bleaching around the capstem were recorded at 2, 4, 6, 8 and 10 weeks of storage. Size of the smoke particles was determined using an electrical aerosol analyzer. Fruit was kept in good condition by fumigation with 6 smoke tablets upto 10 weeks. Lower doses failed to control the decay. No bleaching around the capstems commonly associated with sulfur dioxide fumigation was noticed. Majority of the smoke particles were between 0.18 and 0.32 micrometers. Fumigation with Deccodione tablets could be a viable alternative to sulfur dioxide fumigation.

scholarly journals 808 PB 144 EFFECTIVNESS OF AEROSOL SPRAYS FOR CONTROLLING ROT IN TABLE GRAPES

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 549a-549
Author(s):  
M. Ahmed Ahmedullah
Keyword(s):  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Vitis Vinifera ◽  
Aerosol Particles ◽  
High Relative Humidity ◽  
Viable Alternative ◽  
Thompson Seedless ◽  
Storage Size ◽  
Table Grapes ◽  
And Control

Fruit of Vitis vinifera cvs. Flame Seedless, Thompson Seedless and Black Monukka were fumigated with 4, 6 and 8 Deccodione Smoke Tables (DST) for 30 minutes. Fruit was stored at 32 F and high relative humidity. Decay control index, freshness of stems and bleaching around the capstem were recorded at 4, 8, 12 and 16 weeks of storage. Size of the aerosol particles was determined using an electrical aerosol analyzer. Fruit was analysed for Deccodione residues. Lower rates of the fungicide gave unsatisfactory decay control. Eight DSTs successfully controlled decay upto a period of 14 weeks. There was no bleaching of pigments commonly associated with sulfur dioxide fumigation. Majority of the aerosol particles were between 0.18 and 0.32 micrometers. Deccodione residues on the fruit were within the acceptable limits established for Deccodione. There was no perceptible difference in taste between treated and control fruit. This method of decay control could provide a viable alternative to sulfur dioxide fumigation.

scholarly journals ALTERNATIVES TO SULFUR DIOXIDE FUMIGATION FOR TABLE GRAPE STORAGE

HortScience ◽  
1996 ◽  
Vol 31 (6) ◽  
pp. 919
Author(s):  
A. Ahmedullah
Keyword(s):  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Aerosol Particles ◽  
Table Grape ◽  
High Relative Humidity ◽  
Table Grapes ◽  
Evaluation Time ◽  
Fumigation Chamber

Clusters of four varieties of table grapes were packed in TKV lugs and fumigated with 4, 6, or 8 Deccodione Smoke Tables (DST) for a period of 30 minutes in a fumigation chamber. After fumigation, inoculum of Botrytis cineraria was placed among the berries in the clusters in predetermined locations. Fruit was stored at 0C and high relative humidity for up to 16 weeks. Fruit was examined at 4, 8, 12, and 16 weeks of storage. Decay control index, freshness of stems, and bleaching of pigments around the capstem was recorded at each evaluation time. Size of aerosol particles was determined. Satisfactory control of decay was obtained with 8 DSTs. Lower doses failed to give satisfactory decay control. Bleaching of capstems typically seen with sulfur dioxide fumigation was not noticed with DST fumigation.

scholarly journals Brown spot in table grape Redglobe controlled in study with sulfur dioxide and temperature treatments

2020 ◽  
Vol 74 (3) ◽  
pp. 163-168
Author(s):  
Young Cassandra A. ◽  
Choudhury Robin A. ◽  
Crisosto Carlos H. ◽  
Gubler W. Douglas
Keyword(s):  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Fungal Growth ◽  
Table Grape ◽  
Potato Dextrose Agar ◽  
Brown Spot ◽  
Effect Of Temperature ◽  
Postharvest Disease ◽  
Economic Losses ◽  
Grape Cultivars

Brown spot is a postharvest disease of grapes caused by Cladosporium species in the San Joaquin Valley of California. It spreads during cold storage and transport, resulting in severe economic losses to late table grape cultivars, which are grown mainly for export to countries such as China and Mexico. We examined the effect of temperature and sulfur dioxide (SO2) treatments on fungal growth and infection of Redglobe berries by three Cladosporium species: Cladosporium ramotenellum, C. cladosporioides and C. limoniforme. Redglobe is especially popular for export. Fungal colonies growing on potato dextrose agar in petri plates stored at −2°C grew slower than those stored at 2°C, and an 400 ppm-h SO2 treatment significantly reduced fungal growth of all three species and at all temperatures tested. Redglobe berries inoculated with the Cladosporium species, treated with SO2 concentrations of 100 ppm-h, 200 ppm-h and 400 ppm-h and incubated in high relative humidity chambers for 28 to 32 days at 2°C, showed little incidence of disease. The development of brown spot on berries was entirely prevented with the treatment of 200 ppm-h SO2 for all Cladosporium species tested.

scholarly journals INFLUENCE OF HYDROGENCY ANAMIDE ON BUDBREAK OF TABLE GRAPE CULTIVARS IN SOUTHWEST ARIZONA

HortScience ◽  
1994 ◽  
Vol 29 (7) ◽  
pp. 742b-742
Author(s):  
Marvin D. Butler ◽  
Robert E. Rush
Keyword(s):  
Positive Influence ◽  
Table Grape ◽  
Thompson Seedless ◽  
Early Application ◽  
Early Maturity ◽  
Hydrogen Cyanamide ◽  
Table Grapes ◽  
Application Rates ◽  
Commercial Vineyard ◽  
Grape Cultivars

Early maturity is of major importance to table grape producers in Arizona and the California desert. However, table grapes in this region often experience a delayed and erratic budbreak thought to be due to a lack of chilling. The influence of three rates of hydrogen cyanamide on budbreak timing and uniformity was evaluated at a commercial vineyard near Dateland, Ariz., during the 1984-85 season. Treatments were made to three table grape cultivars over three application dates. Additional research to evaluate possible interaction between time of pruning and application of hydrogen cyanamide was conducted during 1985-86. Of the three application rates evaluated, the 5% solution provided optimal results, inducing a greater total number of buds to break for perlette and flame seedless cultivars than nontreated plots. Early application resulted in a significantly earlier but extended budbreak; later applications were more dramatic and uniform. Budbreak was accelerated by 1 to 2 weeks for perlette, and up to 2 to 3 weeks for flame seedless and Thompson seedless cultivars. Hydrogen cyanamide applications also had a positive influence on earliness of blossom and percent soluble solutes at harvest. Pruning up to 11 days before or 14 days after application of hydrogen cyanamide generally did not have a significant effect on budbreak or maturity at harvest.

scholarly journals Susceptibility of Selected Grape Cultivars and Tree Fruit to Silverleaf Whitefly (Bemisia argentifolii) Colonization

HortScience ◽  
1995 ◽  
Vol 30 (5) ◽  
pp. 1040-1042
Author(s):  
Charles G. Summers ◽  
Albert S. Newton ◽  
Kyle R. Hansen
Keyword(s):  
Prunus Persica ◽  
Prunus Dulcis ◽  
Table Grape ◽  
Diospyros Kaki ◽  
Silverleaf Whitefly ◽  
Bemisia Argentifolii ◽  
Thompson Seedless ◽  
Naturally Occurring ◽  
Tree Fruit ◽  
Grape Cultivars

Six table grape (Vitis vinifera L.) cultivars and 10 species of tree fruit were evaluated in cage tests to determine their susceptibility to colonization by the silverleaf whitefly (Bemisia argentifolii Bellows and Perring). The table grape cultivars Thompson Seedless, Perlette, Flame Seedless, Ruby Seedless, Christmas Rose, and Redglobe were all colonized. In a field nursery, with naturally occurring silverleaf whitefly populations, `Zinfandel', `Sirah', and `Chardonnay' were more heavily colonized than were `Merlot', `Thompson Seedless', or `Redglobe'. The tree crops `Kerman' pistachio (Pistacia vera L.), `Calimyrna' fig (Ficus carica L.), `Nonpareil' almond [Prunus dulcis (Mill.) D.A. Webb], and `Fuyu' persimmon (Diospyros kaki L.) were colonized in cage tests. Silverleaf whitefly failed to establish colonies on caged `O'Henry' peach [Prunus persica (L.) Batsch.], `Fantasia' nectarine [P. persica (L.) Batsch. var. nectarina (Ait.f.) Maxim.], `Casselman' plum (P. salicina Lindl.), `Tilton' apricot (P. armeniaca L.), `Granny Smith' apple (Malus domestica Borkh.), and `Hayward' kiwifruit [Actinidia delicoisa (A. Chevalier) C.F. Liang et A.R. Ferguson].

scholarly journals FUMIGATION OF TABLE GRAPES WITH DECCODIONE SMOKE TABLETS FOR PROLONGING THE POST HARVEST STORAGE LIFE

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1139f-1139
Author(s):  
M. Ahmedullah ◽  
B. Dave ◽  
M. E Patterson ◽  
M. A. Sales
Keyword(s):  
Sulfur Dioxide ◽  
Good Condition ◽  
Quality Parameters ◽  
Storage Life ◽  
Period Effect ◽  
Post Harvest ◽  
Smoke Particles ◽  
Table Grapes

Table grapes cvs. Flame Seedless, Black Monukka and Canadice were fumigated with 2 levels of Deccodione smoke tablets for 30 minutes. Grapes were packed in TKV lugs with Botrytis inoculum planted among the clusters and stored at 0° C for up to 9 weeks. Size of smoke particles was determined. Fruit was evaluated at weekly intervals for decay and quality parameters. Deccodione residues on fruit were determined and found to be within acceptable limits set for this chemical. It was possible to store the grapes for up to 4 weeks at 0° C in good condition. Beyond this period effect of fumigation was lost. There was no bleaching of pigments around the capstem as is seen with sulfur dioxide fumigation. Storage for prolonged periods will necessitate increasing the dose of Deccodione tables and/or repeating the fumigation.

scholarly journals Gibberellic Acid Application Timing Influences the Bud Viability and Fruitfulness of Seedless Table Grape Cultivars

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 598c-598 ◽  
Author(s):  
N.K. Dokoozlian
Keyword(s):  
Gibberellic Acid ◽  
Table Grape ◽  
Thompson Seedless ◽  
Application Timing ◽  
Table Grapes ◽  
Grape Cultivars ◽  
Berry Set

A study initiated in Spring 1995 examined the influence of gibberellic acid (GA3) application timing on the return fruitfulness of Thompson Seedless and Flame Seedless table grapes. Vines treated with GA3 at prebloom, bloom, or berry set were compared to vines treated at prebloom + bloom + berry set and nontreated vines. Application amounts for each cultivar and timing were based on commercial label recommendations. Nodes from each treatment were collected in mid-winter and dissected, and their viability and fruitfulness were recorded. Bud viability (shoots per bud) and fruitfulness (clusters per shoot) also were evaluated at budbreak in 1996. The results indicate that GA3 applications at prebloom and bloom are most detrimental to bud viability and cluster initiation in these cultivars.

scholarly journals Evaluation of Table Grape Storage in Boxes with Sulfur Dioxide-releasing Pads with Either an Internal Plastic Liner or External Wrap

2008 ◽  
Vol 18 (2) ◽  
pp. 206-214 ◽  
Author(s):  
Ammon Lichter ◽  
Yohanan Zutahy ◽  
Tatiána Kaplunov ◽  
Susan Lurie
Keyword(s):  
Sulfur Dioxide ◽  
Table Grape ◽  
The Other ◽  
Low Density Polyethylene ◽  
Refrigerated Storage ◽  
Thompson Seedless ◽  
Table Grapes ◽  
Grape Quality ◽  
Plastic Liner

Two main methods are in use for packing table grapes (Vitis vinifera) for refrigerated storage and transport. One is to pack the grapes with a sulfur dioxide (SO2) generator pad inside a box with a perforated plastic liner and then to cool them. The other is to place the SO2 pad on the grapes, cool the pallet, and wrap it with low-density polyethylene film, leaving the bottom of the pallet open. These two methods were compared for their efficiency in maintaining grape quality and preventing decay for periods ranging from 33 to 117 days. The experiments included ‘Redglobe’ and ‘Zainy’ grapes packaged in plastic boxes and ‘Thompson Seedless’ grapes packaged in cardboard boxes. The quality of the grapes in the trials with plastic boxes was either similar in both packaging methods or better in the wrapped pallet than the liner method. The pedicels, and sometimes the rachis, showed more desiccation in the liners than in the wrapped pallets. Prevention of decay was also better with the wrapped pallets than for storage in liners. However, in the experiment with cardboard boxes, the externally wrapped boxes contained lower levels of SO2, probably because of absorption of SO2 by the cardboard, and the grapes developed more decay and rachis desiccation than in liners inside the cardboard boxes. The method of wrapping grapes after cooling them can have significant advantages over the liner method because of the faster cooling of the grapes and the use of less plastic-based, nonrecyclable materials.

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