Fixação de frutos de limeiras ácidas 'Tahiti' aneladas e tratadas com ácido giberélico

Pereira, Cassiano Spaziani; Siqueira, Dalmo Lopes de; Salomão, L. C. C.; Cecon, Paulo Roberto

doi:10.1590/s0100-29452011005000002

Cited by 3 publications

(6 citation statements)

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“…Lower height increase in plants with 100% of branches girdled combined with high number of fruits therein indicates possible competition for assimilation between vegetative and reproducible growth, for while girdling prevents partitioning of assimilates into the root system, it makes more carbohydrates available to the canopy, but does not inhibit competition among the shoot organs. The results corroborate those found by Pereira et al (2010) when studying fruit fixation in C. latifólia girdled plants.…”

Section: Discussionsupporting

confidence: 90%

“…The 50% branch girdling treatment may possibly have provided more assimilates for the development of fruit, while not fully hindering the transportation of assimilates required to support the absorption of mineral nutrients in the root system. According to Pereira et al (2010), insufficient mineral nutrients in the canopy are a negative effect of branch girdling in C. latifólia.…”

Section: Discussionmentioning

confidence: 99%

“…Adoption of management practices is required in order to minimize the abscission of reproduction structures and increase the productivity of C. latifolia. Among such practices branch girdling stands out, which consists in cutting off and removing a strip of bark around the trunk circumference (Pereira et al, 2010). Girdling prevents assimilation from being transported to the root system, increasing temporary retention of carbohydrates in the tree canopy and thus promoting greater fruit fixation (Santos et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…According to Pereira et al (2014), girdling increases the number and size of C. latifolia fruit. Despite the benefits of girdling, the incision into the stem may cause accumulation of phytoregulators and other metabolites, bringing undesired effects such as reduced plant size, lower photosynthesis rate, yellowing leaves and reduced root growth (Pereira et al, 2010(Pereira et al, , 2011.…”

Section: Introductionmentioning

confidence: 99%

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Productivity of Citrus latifolia plants subjected to branch girdling

Nascente¹,

Anjos²,

Santos³

et al. 2015

Afr. J. Agric. Res.

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Abscission of flowers and fruit in Citrus latifolia cultivars is more intense than in seeded Citrus ones. The purpose of this study was to evaluate the effect of different levels of branch girdling in C. latifolia fruit fixation. The work was carried out in an orchard of C. latifolia grafted onto three-year-old Citrus limonia spaced 3x1, located in the Goiás State University experimental field. The experiment was set up according to the randomized block design with four treatments (girdling of 0, 25, 50 and 100% of the branches existing in the plant), five replications, parcels of four usable plants and total of 20 plants. Girdling was accomplished on 29/08/2014 and full flowering occurred on 13/09/2014. The plants that had 100% of their branches girdled presented high productivity of fruit with low juice volume. Those with 50% of branches girdled showed higher productivity and good juice yield per fruit. Results indicate that total blocking of transportation of assimilation from the canopy to the root system has negative impact on the volume of fruit juice.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Productivity of Citrus latifolia plants subjected to branch girdling

Nascente¹,

Anjos²,

Santos³

et al. 2015

Afr. J. Agric. Res.

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“…Most evidence suggests that carbohydrate availability limits yield more than GA levels [119]. According to the reviewed studies, girdling is the most powerful technique to improve fruit set and yield, probably by modifying carbohydrate distribution, but with uncertain consequences for the next years [116,117,122]. Erner (1988) pointed out that girdling is a risky procedure.…”

Section: Discussionmentioning

confidence: 99%

Gibberellic acid in Citrus spp. flowering and fruiting: A systematic review

Garmendia

Beltrán

Zornoza³

et al. 2019

PLoS ONE

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BackgroundIn Citrus spp., gibberellic acid (GA) has been proposed to improve different processes related to crop cycle and yield. Accordingly, many studies have been published about how GA affects flowering and fruiting. Nevertheless, some such evidence is contradictory and the use of GA applications by farmers are still confusing and lack the expected results.PurposeThis review aims to collate, present, analyze and synthesize the most relevant empirical evidence to answer the following questions: (i) how does gibberellic acid act on flowering and fruiting of citrus trees?; (ii) why is all this knowledge sometimes not correctly used by farmers to solve yield problems relating to flowering and fruit set?MethodsAn extensive literature search to obtain a large number of records about the topic was done. Searches were done in five databases: WoS, Scopus, Google Academics, PubMed and Scielo. The search string used was "Gibberellic acid" AND "Citrus". Records were classified into 11 groups according to the development process they referred to and initial data extraction was done. Records related with flowering and fruit set were drawn, and full texts were screened. Fifty-eight full text records were selected for the final data extraction.ResultsSelected studies were published from 1959 to 2017 and were published mainly in Spain, USA, Brazil and Japan. Twelve species were studied, and Citrus sinensis, C. reticulata and C. unshiu were the principal ones. Most publications with pre-flowering treatments agreed that GA decreases flowering, while only 3 out of 18 did not observe any effect. In most of these studies, the effect on fruit set and yield was not evaluated. Studies with treatments at full bloom or some weeks later mostly reported increased fruit set. However, these increases did not imply higher yields. The results on yield were highly erratic as we found increases, decreases, no effects or variable effects.ConclusionsDespite some limitations, the action of GA related to cell division and growth, stimulating the sink ability of the organ and discouraging its abscission, has been clearly established through reviewed studies. GA applications before flowering counteract the floral induction caused by stress reducing flowering. However, on adult trees under field conditions, reducing flowering by applying GA would be difficult because it would be necessary to previously estimate the natural floral induction of trees. During flowering and fruit set, many problems may arise that limit production. Only when the problem is lack of fruit set stimulus can GA applications improve yields. However, much evidence suggests that the main factor-limiting yield would be carbohydrate availability rather than GA levels. GA applications increased fruit set (often transiently), but this increase did not mean improved yields.

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Effect of Girdling and Cincturing on Setting and Yield in Balady Mandarin Trees

Badawy

Mohamed

2023

AJAS

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Growing citrus fruit trees became more expensive over the last few years as a result of rising production costs. Thus, less environmentally harmful methods were employed in an effort to find a technique to lower these costs while obtaining a high yield and quality of fruits free from any chemical residues. This study was carried out during two consecutive seasons of 2020 and 2021 on 15 uniformed Balady Mandarin trees, 20 years old, budded on sour orange rootstock, and planted at a distance of 5×5 m in the productive farm at the Agricultural Research Center in Shandawel Island, Sohag Governorate. The experiment aims to study the influence of girdling and cincturing on the fruit setting and yield of Balady mandarin trees. The results showed that all girdling and cincturing treatments (girdling or cincturing the trunk or branches) had a positive effect on flowering, fruiting, leaves content of carbohydrates, yield, and some fruit quality properties (TSS and TSS/acid ratio), while they led to a decrease in the leaves content of nitrogen in Balady mandarin trees under the climatic conditions of Sohag Governorate. The study recommends the importance of girdling the branches and trunk of the Balady mandarin trees under Sohag conditions to enhance the yield and quality of the fruits.

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Fixação de frutos de limeiras ácidas 'Tahiti' aneladas e tratadas com ácido giberélico

Cited by 3 publications

References 10 publications

Productivity of Citrus latifolia plants subjected to branch girdling

Productivity of Citrus latifolia plants subjected to branch girdling

Gibberellic acid in Citrus spp. flowering and fruiting: A systematic review

Effect of Girdling and Cincturing on Setting and Yield in Balady Mandarin Trees

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