Flower and Fruit Thinning of Peach and other<i>Prunus</i>

Byers, Ross E.; Costa, Guglielmo; Vizzotto, Giannina

doi:10.1002/9780470650851.ch7

Cited by 36 publications

(62 citation statements)

References 71 publications

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“…One of the primary concerns is ethephon's inconsistency when used as a thinning agent [2,3]. Ethephon degradation and subsequent release of ethylene gas is highly temperature dependent [35,36], at least outside the window of 21˚C -32˚C [37].…”

Section: Discussionmentioning

confidence: 99%

“…For producers, fruit size is the primary factor affecting yield and crop value. While there is a strong genetic (cultivar) influence on fruit size [4], it has long been established that fruit size can be increased by adjusting the crop load early in the growing season [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Fruit quality and consumer acceptance of fresh market peaches is largely defined by fruit size, flavour, melting texture, and surface and flesh color [2,3]. For producers, fruit size is the primary factor affecting yield and crop value.…”

Section: Introductionmentioning

confidence: 99%

“…Removing fruitlets by hand thinning is typically performed at stage II of fruit development (pit hardening), 40 -60 days after full bloom (DAFB) [2,3,5]. In Canada, hand thinning can require between 100 -150 h·ha -1 depending on tree vigour, age, size, and fruit set, resulting in a estimated cost of ~$1235 ha -1 per year [6] based on current wages and benefits.…”

Section: Introductionmentioning

confidence: 99%

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Ethephon-Induced Abscission of “Redhaven” Peach

Taheri¹,

Cline²,

Subramanian³

et al. 2012

AJPS

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Fruit size of peaches is an important quality factor that can be optimized by adjusting the number of fruit on the tree by hand thinning 40 -60 days after full bloom (dafb). Hand thinning is labor intensive and therefore the development of other strategies to reduce production cost is warranted. Since ethylene plays a key role in peach fruitlet abscission, it is hypothesized that foliar applications of ethephon will induce fruit abscission and increase fruit size. Ethephon (0 to 400 mg·L -1 ) was applied to "Redhaven" peach trees 45 -50 days after full bloom in 2005 and 2007 to determine the efficacy and concentration required to induce fruit abscission. Abscission was linearly related to ethephon concentration and as a result reduced fruit set by 70% to 100%. These data indicate that ethephon in the range of 100 -200 mg·L -1 can be used to induce adequate levels of fruit abscission of "Redhaven" peaches without inducing trunk or limb gummosis.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ethephon-Induced Abscission of “Redhaven” Peach

Taheri¹,

Cline²,

Subramanian³

et al. 2012

AJPS

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“…Spraying NAA affected percentage of thinning and fruit quality (Bolat and Karlidag, 1999). Ethrel is a follow up thinner when prior chemical thinning agents have unsuccessful to thinning successfully (Byers, 2003).…”

mentioning

confidence: 99%

Effect of Different Concentrations of Foliar Applications of Urea, NAA and Ethrel on Fruit Thinning of ‘Dolce’ Olive cv.

2013

NIDOC-ASRT

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HIS EXPERIMENT was executed in an olive private farm in ……...Cairo Alexandria desert road (64 kilometer) to study the effect of spraying with Urea at 2% and 4%, NAA at 100 mg.L -1 and 150 mg.L -1 and Ethrel at 150 mg.l -1 and 300 mg.l -1 on 'Dolce' olive cv. trees (7 years-old) were planted 6 x 4m and irrigated with drip irrigation. The farm received the recommended managements of Horticulture Research Institute publication (2011). As for thinning NAA with at 150 mg.l -1 concentration gave the might percentage of thinning, however the foliar application of urea 2 % concentration and Ethrel at 150 mg. l -1 gave the least ratios and the rest of the treatments showed the middle values between them. The remaining fruits per meter before harvesting were less when sprayed with NAA with at 150 mg.l -1 concentration, also the highest thinning ratios was before harvesting (resulted from thinning + June dropping + dropping before harvesting) in both seasons. It is obvious that spraying NAA with at 150 mg. l -1 concentration leads to the increasing significantly of the length, diameter and weight in addition to the fruit volume and yield during the two growing seasons. Although those treatments didn't gave any significant difference in the fruit moisture percentage, spraying with NAA gave the highest significant difference in oil percentage as dry weight. Depending on these results we can recommend the spraying of NAA with at 150 mg. l -1 concentration to improve the production and quality of "Dolce" olive fruits through thinning.

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Thinning in peach: Past, present and future of an indispensable practice

Costa

Botton

2022

Scientia Horticulturae

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Flower and Fruit Thinning of Peach and otherPrunus

Cited by 36 publications

References 71 publications

Ethephon-Induced Abscission of “Redhaven” Peach

Ethephon-Induced Abscission of “Redhaven” Peach

Effect of Different Concentrations of Foliar Applications of Urea, NAA and Ethrel on Fruit Thinning of ‘Dolce’ Olive cv.

Thinning in peach: Past, present and future of an indispensable practice

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