EFFECT of SOME DORMANCY BREAKING AGENTS ON BUD BEHAVIOUR , VEGETATIVE GROWTH , FRUIT SET AND YIELD OF " CANINO " APRICOT.

Kelany, Ayda K.; Fayed, T. A.; El-Fakhrani, E.; Sayed, S. K.

doi:10.21608/jpp.2009.117297

Cited by 2 publications

(4 citation statements)

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“…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: 82%

“…The concentration, as we mentioned before, is the second crucial factor in successfully advancing endodormancy release. 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 Concentrationmentioning

confidence: 99%

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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: Effects Of the Different Agrochemicals On Productionsupporting

confidence: 83%

Section: Agrochemical Application Time and Concentrationmentioning

confidence: 82%

Section: Agrochemical Application Time and Concentrationmentioning

confidence: 99%

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Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

2022

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“…According to FAO its total cultured area in Egypt is 6677 hectares in 2016 produced about 16.88 Tons/ hectare with total production of 102247 Tons (Satuor et al, 2019). Apricot "Canino'' cultivar is an introduced cultivar producing high yield in newly reclaimed lands (Kelany et al, 2009). Powdery mildew, caused by the fungus Sphaerotheca pannosa (Wallr.)…”

Section: Introductionmentioning

confidence: 99%

Biological and Chemical Control of Powdery Mildew (Sphaerotheca pannosa (Wallr.) var. persicae) in Apricot

2019

International Journal of Sustainable Development and Science

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During the two successive growing seasons 2017 and 2018, powdery mildew (Sphaerotheca pannosa (Wallr.) var. persicae) was recorded on apricot (Prunus armeniaca L.), cv. Canino in four governorates Qaliobia, Menoufia, Beheira and Giza, Beheira governorate recorded the highest percentage in disease incidence followed by Menoufia, Qaliobia and Giza, respectively. The pathogenicity of Sphaerotheca pannosa (Wallr.) var. persicae in inoculated seedlings at 5 days after inoculation confirmed the pathogenicity of the fungus on Amal, Hayed, and El-Amar cvs. The fungicides i.e., Microvit, Topas, Topsin M70, Amistar Top, Bellis and Eminent, as well as the bio-fungicides, AQ10 and Bio Zeid, meanwhile calcium carbonate and sodium bicarbonates were evaluated to control the powdery mildew on apricot in vitro, greenhouse and field conditions. All the tested treatments inhibited conidial germination and the highest efficiency was found for the treatment with Amistar, Bellis and Eminent followed by Topas (100), AQ10 and Bio Zeid, while treatment with Microvit KZ showed lower efficiency. In the greenhouse and under field conditions during the two successive growing seasons 2017 and 2018 at El-Qanater El-Khayria Horticulture Research Station, Agricultural Research Center, Qaliobia governorate, Egypt, to control the powdery mildew (Sphaerotheca pannosa (Wallr.) var. persicae) all the tested fungicides, biofungicides and calcium carbonate and sodium bicarbonates significantly reduced the percentages of disease severity compared with the untreated control. highest efficiency was found for the treatment with Amistar, Bellis and Eminent followed by Topas (100), Topsin M70, AQ10 and Bio Zeid, as well as calcium carbonate and sodium bicarbonates

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EFFECT of SOME DORMANCY BREAKING AGENTS ON BUD BEHAVIOUR , VEGETATIVE GROWTH , FRUIT SET AND YIELD OF " CANINO " APRICOT.

Cited by 2 publications

References 0 publications

Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments

Biological and Chemical Control of Powdery Mildew (Sphaerotheca pannosa (Wallr.) var. persicae) in Apricot

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