Dormex and Promalin affects fruit set and earliness of apricot (<i>Prunus armeniaca</i>) and plum (<i>Prunus domestica</i>) cultivars

Son, Levent; Küden, Ali

doi:10.1080/01140671.2005.9514331

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…In apricot, a comparison of 1, 2, and 3% hydrogen cyanamide solutions showed that 3% produced the highest fruit set ( Kelany et al, 2009 ). This fact agrees with other results in peach and plum, in which trees treated with a 2% solution exhibited a higher flower bud break rate than trees treated with a 1% solution ( Dozier et al, 1990 ; Son and Kuden, 2005 ).…”

Section: Agrochemical Application Time and Concentrationsupporting

confidence: 92%

“…For instance, a study in peach showed that the application of a hydrogen cyanamide solution (3%) had a great impact on fruit quality, increasing the fruit set and the fruit weight by over 30%, and decreasing fruit drop by 50% ( Singh and Banyal, 2020 ). Similar results have also been observed in apricot and plum, in which the application of a hydrogen cyanamide solution (3%) increased the fruit set of the treated trees in both species ( Son and Kuden, 2005 ; Kelany et al, 2009 ).…”

Section: Effects Of the Different Agrochemicals On Productionsupporting

confidence: 83%

“…Nevertheless, this lack of differences might be due to the low concentration applied, given that the optimal concentration of other agrochemicals with a similar composition is around 6% for apple, for example (Hawerroth et al, 2010;Pasa et al, 2018). All of these results confirm that stone fruits and apple trees need a high concentration of agrochemicals to obtain maximum performance (Dozier et al, 1990;Son and Kuden, 2005;Kelany et al, 2009;Hawerroth et al, 2010;Pasa et al, 2018). This is indeed problematic as it has been demonstrated that treatments with a high agrochemical concentration or an incorrect application time may cause bud toxicity, producing bud fall and huge production losses (Wang et al, 2016).…”

Section: Agrochemical Application Time and Concentrationmentioning

confidence: 81%

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Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

2022

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Endodormancy in temperate fruit trees like Prunus is a protector state that allows the trees to survive in the adverse conditions of autumn and winter. During this process, plants accumulate chill hours. Flower buds require a certain number of chill hours to release from endodormancy, known as chilling requirements. This step is crucial for proper flowering and fruit set, since incomplete fulfillment of the chilling requirements produces asynchronous flowering, resulting in low quality flowers, and fruits. In recent decades, global warming has endangered this chill accumulation. Because of this fact, many agrochemicals have been used to promote endodormancy release. One of the first and most efficient agrochemicals used for this purpose was hydrogen cyanamide. The application of this agrochemical has been found to advance endodormancy release and synchronize flowering time, compressing the flowering period and increasing production in many species, including apple, grapevine, kiwi, and peach. However, some studies have pointed to the toxicity of this agrochemical. Therefore, other non-toxic agrochemicals have been used in recent years. Among them, Erger® + Activ Erger® and Syncron® + NitroActive® have been the most popular alternatives. These two treatments have been shown to efficiently advance endodormancy release in most of the species in which they have been applied. In addition, other less popular agrochemicals have also been applied, but their efficiency is still unclear. In recent years, several studies have focused on the biochemical and genetic variation produced by these treatments, and significant variations have been observed in reactive oxygen species, abscisic acid (ABA), and gibberellin (GA) levels and in the genes responsible for their biosynthesis. Given the importance of this topic, future studies should focus on the discovery and development of new environmentally friendly agrochemicals for improving the modulation of endodormancy release and look more deeply into the effects of these treatments in plants.

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Section: Agrochemical Application Time and Concentrationsupporting

confidence: 92%

Section: Effects Of the Different Agrochemicals On Productionsupporting

confidence: 83%

Section: Agrochemical Application Time and Concentrationmentioning

confidence: 81%

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Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

2022

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“…Also, Fallahi & Fallahi (2004), mentioned that dormex increased fruit weight of apple. Also, Son & Kuden (2005) reported that 1 % and 2 % of hydrogen cyanamide gave better flower, vegetative bud break and increased fruit weight in Plum and Apricot fruits.…”

Section: Effect Of Winter Oil and Dormex On Fruit Quality Of Leconmentioning

confidence: 96%

Effect of Winter Oil and Dormex Sprays on Fruit Quality and Storage Ability of Leconte Pear Fruits

Samra

Mostafa

2009

Journal of Plant Production

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This investigation was carried out during 2005 and 2006 seasons to study the effect of spraying Leconte pear trees with winter oil at 2 % and Dormex at 1, 2 % each alone or in combination as Dormancy breaking agents to study their effect on fruit quality at harvest time and storage ability through marketing for 6 days under room temperature. The data revealed that dormex at 1 or 2 % each alone or with winter oil significantly increased fruit weight, firmness and SSC/acid ratio at harvest than spraying with winter oil or the control. Furthermore, winter oil alone or with dormex significantly reduced the percent of total loss in fruit weight than those sprayed with dormex alone or the control. Fruit firmness was reduced but total caroteniods and SSC/acid ratio were increased through marketing after 6 days from harvest. In this respect, sprayed Le-Conte pear with both winter oil and Dormex at 2 % gave a more pronounced effect on fruit quality at harvest time and through marketing.

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“…However, Dormex (49% hydrogen cyanamide; HC) application advanced flowering of apricot by 2-5 days (Son and Kuden, 2005). HC combined with mineral oil increased flower bud opening, advanced flowering and fruit set, increased the percentage of fruit set, fruit retention.…”

Section: Introductionmentioning

confidence: 99%

Better Combination of Defoliation and Dormancy Breaking Agent for Pear Orchards

Fathi

Hussein

2007

Journal of Plant Production

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This study was conducted during the 2004-2005 and 2005-2006 seasons to evaluate the effect of spraying "Le-Conte" pear (budded on Pyrus communis rootstock) trees with defoliation treatments (urea, 7% or zinc sulfate, 3.5%) at 1 st Nov. or 15 th Nov. and dormancy-breaking agents (hydrogen cyanamide, 49%; potassium sulfate or ammonium nitrate) sprayed at 1 st Jan., 15 th Jan. or 1 st Feb. Measurements included vegetative growth (shoot length, number of leaves per shoot and percentage of vegetative spurs), floral growth (percentage of floral spurs and fruit set), fruit yield and its components (number of fruits/tree, fruit yield/tree and yield monetary value/tree) and fruit quality attributes (fruit weight and size as well as juice TSS and acidity).Statistical analysis confirmed that, better results can be obtained as the follows combination of treatments. At 15 th Nov. leaf shedding should spray using ZnSO4 (3.5%). At the next 15 th Jan., hydrogen cyanamide (49%) should spray on "Le-Conte" pear trees.

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Dormex and Promalin affects fruit set and earliness of apricot (Prunus armeniaca) and plum (Prunus domestica) cultivars

Cited by 12 publications

References 15 publications

Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

Effect of Winter Oil and Dormex Sprays on Fruit Quality and Storage Ability of Leconte Pear Fruits

Better Combination of Defoliation and Dormancy Breaking Agent for Pear Orchards

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