The effects of hydrogen cyanamide on budburst and fruit maturity of ‘Thompson Seedless’ grapevine

Carreño, J.; Faraj, S.; Martínez, A.

doi:10.1080/14620316.1999.11511131

Cited by 10 publications

(10 citation statements)

References 8 publications

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“…All Dormex ® -sprayed vines broke buds (23 to 46) d after pruning; among these, the Dormex applied at pruning (Dormex prun0 ) treatment and the Dormex applied 7 d after [18]. These results are in agreement with the work of several authors [13,[15][16][17][18][19][20][21][25][26][27][28][29][30]. However, the amount of budbreak would be closely related to the quantity of chilling received at the application time and the concentration of H 2 CN 2 [13].…”

Section: Budbreaksupporting

confidence: 88%

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex^®under Jordan Valley conditions

Muhtaseb¹,

Ghnaim²

2008

Fruits

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Budbreak, fruit quality and maturity of 'Superior' seedless grapes as affected by Dormex ® under Jordan Valley conditions. Abstract-Introduction. In subtropical regions, the lack of or insufficient winter chilling has been one of the most important yield-limiting factors for table grapes. Winter chilling for several weeks is required to cause the transition of both vegetative and floral buds from the dormant to the active state. Thus, the effect of time of application of Dormex ® (hydrogen cyanamide) on fruit quality and ripening of 'Superior' seedless grape was evaluated under Jordan Valley conditions. Materials and methods. Five-year-old 'Superior' seedless vines were pruned on 20 December and sprayed to runoff with a 5% (v/v) concentration of Dormex ® at pruning (Dormex prun0), 7 d (Dormex prun7) or 14 d (Dormex prun14) after pruning in comparison with the pruned-only control plants. The date of vegetative budbreak and start of flowering were determined. Fruits were harvested at intervals of 7 d starting from 9 May, with four harvests. Studied data were fruit weight, total soluble solids (TSS), titratable acidity (TA) and maturity with the [TSS:TA] ratio. Results and discussion. All pruned and sprayed vines broke bud 23-46 d after pruning. The (Dormex prun0) and (Dormex prun7) treatments were the earliest. Compared with the control, Dormex ®-treated vines broke bud 4-26 d earlier. All pruned and Dormex ®-treated vines started flowering 55-64 d after pruning, with 4-13 d earlier than the control. Fruits of the (Dormex prun0) treatment had significantly the highest fruit weight, TSS and the least TA, and it was the only treatment that exceeded the [18:1] (TSS:TA) level. Additionally, higher TSS and lower TA were observed for fruits of Dormex ®-treated vines during all harvest dates in comparison with the control. Conclusion. Our study showed that, under southern Jordan Valley conditions, Dormex ® should be applied as early as at pruning time to obtain early budbreak and maturity. Jordan / Jordan River / Vitis vinifera / dormancy breakers / fruits / quality Effet du Dormex ® sur la levée de dormance, la qualité du fruit et la maturité de raisins aspermes 'Superior' dans les conditions de la vallée du Jourdain. Résumé-Introduction. Dans les régions subtropicales, le manque ou l'insuffisance de froid hivernal a été l'un des facteurs limitants du rendement le plus important pour le raisin de table. Un froid hivernal de plusieurs semaines est nécessaire pour provoquer la transition des bourgeons végétatifs et floraux du stade dormant à un état actif. De ce fait, la période d'application du Dormex ® (cyanamide d'hydrogène) a été évaluée quant à son effet sur la qualité du fruit et la maturation du raisin asperme 'Superior', dans les conditions de la vallée du Jourdan. Matériel et méthodes. Des vignes aspermes 'Superior' de 5 ans ont été taillées le 20 décembre et une solution à 5% de Dormex ® (v/v) a été appliquée par pulvérisation soit au moment de cette taille (Dormex taille0), soit 7 jours (Dormex taille7) ou 14 jo...

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Section: Budbreaksupporting

confidence: 88%

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex^®under Jordan Valley conditions

Muhtaseb¹,

Ghnaim²

2008

Fruits

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“…Although not a hormone, there are reports of improvements in fruit maturity by hydrogen cyanamide (H 2 CN 2 ) (George et al 1988;Carreño et al 1999). According to these reports, H 2 CN 2 advances budburst in table grapevines.…”

Section: Discussionmentioning

confidence: 98%

“…Chemical control using plant growth regulators is a technology used in horticulture, and application of gibberellin (GA 3 ) (Clore 1965), hydrogen cyanamide (H 2 CN 2 ) (George et al 1988;Carreño et al 1999) and 2,3,5-triiodobenzoic acid (TIBA) (Yakushiji et al 2001) has been shown to advances fruit maturity in grape. It has also been noted that abscisic acid (ABA) enhances skin coloration (Kataoka et al 1982).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Growth and Fruit Maturity in 2-year-old Grapevines cv. Delaware by 5-Aminolevulinic Acid

et al. 2006

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The influence of 5-aminolevulinic acid (ALA) on the growth, photosynthesis, and fruit quality of gibberellin-induced seedless 2-year-old ''Delaware'' grapevine was examined. The result of soil treatment (0.1-10 mg l )1 ) and foliar spray treatment (30-300 mg l )1 ) with ALA after flowering was significant growth improvement, up to 55% in the lateral shoot, and up to 38% in leaf area. Optimal doses were 1 mg l )1 soil treatment and 100 mg l )1 foliar treatment. The photosynthetic rate of plants treated with ALA increased by a significant 9.2%-22.5%. Relative to the control, based on measurements of the 5th leaf of each shoot in the ripening period, the optimum concentrations for growth and photosynthesis enhancement in grapevines were 100 mg l )1 (foliar treatment) and 1 mg l )1 (soil treatment). Total plant weight at harvest increased a significant 13% at the optimal treatment doses. In terms of fruit quality, the cluster fresh weight increased a significant 44.9%-53% and fruit colour showed a tendency to become darker in all plants treated with ALA. The°Brix value in the plant treated with 100 mg l )1 ALA was a significant 2.7% higher than that of the control. We consider that leaf area and photosynthetic rates during cultivation are important for the acquisition of photoassimilates and that these are likely to be causally associated with improvement of total dry weight and advance of fruit quality. In addition, a possibility of advancing the harvest time of grapes by ALA treatment was shown.

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“…According to Keller (2015), leaving more clusters per plant will increase sink strength for carbohydrates, decreasing shoot vigor and number of berries, favoring enological quality. Berry mass is not directly related to treatments affecting budburst, because it depends on environmental conditions which occur later in the cycle (CARREÑO et al, 1999), and was not considered in this study. A slight effect of Erger ® dose was observed, with 5% Erger ® resulting in 271 (14.9%) more berries per plant than the average of the other treatments.…”

Section: Resultsmentioning

confidence: 99%

Alternative budburst management in Campanha Gaúcha vineyards

et al. 2020

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Seeking a less toxic alternative to budburst management than hydrogen cyanamide, doses of the mineral-organic product Erger® were tested in combination with calcium nitrate (Ca(NO3)2). The experiment was conducted in Santana do Livramento, southern Brazil, during the 2013/14 and 2014/15 growth cycles, in a ‘Merlot’ vineyard conducted in a vertical trellis system, pruned in double Guyot, with SO4 rootstock. Treatments were: Control (unsprayed); 5.0% Ca(NO3)2; 2.5% Erger® + 5.0% Ca(NO3)2; 5.0% Erger® + 5.0% Ca(NO3)2; 7.5% Erger® + 5.0% Ca(NO3)2; 3.5% Dormex® (positive control). All Erger® treatments stimulated budbreak, increasing budburst from 68% (unsprayed and calcium nitrate means) to 83% (Erger® means) in the first cycle and from 85% to 96% in the second one, with no difference among doses. Plants treated with Dormex® had budburst similar to Erger® in the first cycle (85%), but budburst in the second cycle was only 72%, possibly due to burned buds. Therefore, Erger®, in concentrations of 2.5% or more with 5% calcium nitrate, may be a promising alternative to induce budburst in regions with restrictions in cold availability.

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The effects of hydrogen cyanamide on budburst and fruit maturity of ‘Thompson Seedless’ grapevine

Cited by 10 publications

References 8 publications

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex^®under Jordan Valley conditions

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex^®under Jordan Valley conditions

Enhancement of Growth and Fruit Maturity in 2-year-old Grapevines cv. Delaware by 5-Aminolevulinic Acid

Alternative budburst management in Campanha Gaúcha vineyards

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The effects of hydrogen cyanamide on budburst and fruit maturity of ‘Thompson Seedless’ grapevine

Cited by 10 publications

References 8 publications

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex®under Jordan Valley conditions

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex®under Jordan Valley conditions

Enhancement of Growth and Fruit Maturity in 2-year-old Grapevines cv. Delaware by 5-Aminolevulinic Acid

Alternative budburst management in Campanha Gaúcha vineyards

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Product

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Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex^®under Jordan Valley conditions

Budbreak, fruit quality and maturity of ‘Superior’ seedless grapes as affected by Dormex^®under Jordan Valley conditions