Diquat e ureia no manejo da floração natural do abacaxizeiro 'Pérola'

Kist, Hélio Gaspar Kuoos; Ramos, José Darlan; Pio, Rafael; Santos, Verónica Andrade dos

doi:10.1590/s0100-29452011000400002

Cited by 5 publications

(5 citation statements)

References 7 publications

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“…Under natural conditions, pineapple flowering is slow and uneven, and occurs under conditions of short days and cold nights. To prevent this transition, from the vegetative to the reproductive phase, from occurring under inadequate conditions, the plants are induced to synchronize the floral differentiation by external ethylene treatments, a technique that allows to synchronize fruit formation and facilitate harvesting, in addition to being a strategy to stagger the production, so that the fruits are harvested at favorable times, when the supply of the product is scarce (Cunha, 2005;Kist et al, 2011).…”

Section: Management Floral Inductionmentioning

confidence: 99%

Cultural treatments in pineapple crop. Management for high yield – Review

et al. 2021

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Several factors influence in the vegetative development, yield and quality of pineapple fruits, among which the cultural treatments adopted throughout the production cycle stand out, mainly weed control, mineral nutrition, irrigation and induction artificial flowering. The purpose of this review was to present the main advances in research on cultural treatments in the cultivation of pineapple (Ananas comosus L. Merril) and their effects on yield and fruit quality. Current research shows that interventions for weed management, through chemical control with herbicides or the adoption of organic or inorganic soil cover are strategies that can be adopted by producers who seek to reduce labor costs and provide good conditions for plant development. The use of mulching is a promising and effective practice, given the cost reduction with polluting herbicide applications and improvement of the physicochemical quality of the soil. Regarding mineral nutrition, pineapple is a rustic plant, tolerant to soils with moderate acidity and low levels of nutrients in the soil, however, liming and fertilization are essential for crops where high yields are sought. In the same way, it is verified that the pineapple, even being a CAM metabolism plant, tolerant to situations of water stress, is highly responsive to irrigation, which provides improvements in the vegetative and reproductive development of the plant. Another essential management practice in pineapple crops is artificial floral induction, a practice that aims to synchronize the flowering period, facilitate harvesting and ensure a consumer market in times when the supply of fruit is scarce

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Section: Management Floral Inductionmentioning

confidence: 99%

Cultural treatments in pineapple crop. Management for high yield – Review

et al. 2021

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“…(Cavatte et al 2012), acid lime trees (Citrus latifolia Tanaka cv. 'Tahiti') (Cruz et al 2009), pineapple (Ananas comosus) (Maruthasalan et al 2010, Kist et al 2011 and other ornamental species (Moraes et al 2012, Brescasin et al 2013. Despite the good results obtained with these other species, these products are not used in native fruits yet, especially in jabuticaba tree.…”

Section: Abstract Resumomentioning

confidence: 99%

“…It has been empirically observed that flowering occurs after pruning or continuous irrigation. Therefore, if bioregulators are correctly used, this may provide a longer period to fruit harvest, allowing the establishment of commercialization strategies, such as producing fruits off-season (Kist et al 2011), when the prices may reach higher values (Ataíde et al 2006). Given all that, this study aimed to evaluate the vegetative and reproductive behavior of hybrid jabuticaba tree under flowering induction in orchards.…”

Section: Abstract Resumomentioning

confidence: 99%

Reproductive and vegetative behavior of hybrid jabuticaba tree under flowering induction

Neto

Porto

Silva

et al. 2018

Pesqui. Agropecu. Trop.

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Brazil is one of the countries with the greatest vegetal diversity in the world, especially for the Myrtaceae family, to which the jabuticaba tree belongs. Its fruits are of great acceptability, but it is little explored commercially, because it takes a long time to reach the production stage. This study aimed to evaluate the vegetative and reproductive behavior of hybrid jabuticaba trees under flowering induction treatments. A randomized block design was used, with the following treatments: calcium carbide, etefon, paclobutrazol, daily irrigation management and control. Growth and reproductive development data were evaluated. For vegetative growth, there was no difference among the treatments, demonstrating no negative effect. On the other hand, paclobutrazol showed to be the most promising treatment, because it anticipates flowering, is effective in induction and results in a higher production.

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“…However, the varieties of A. comosus grown in these regions show slow growth during the vegetative growth phase (VGP), thereby prolonging the crop cycle, which can vary from 12 to 30 months until the first fruit is produced. The prolonged crop cycle affects production costs due to the need to control weeds, insect pests and diseases (PY et al, 1984;Catunda et al, 2005;Kist et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The VGP is considered one of the longest, ranging from 8 to 18 months. It is also considered the most important phase in the production cycle of the pineapple, as it is during this period that the plants acquire sufficient size for floral induction (natural or artificial), and the maximum nutritional reserve necessary for the development and quality of the fruit (Kist et al, 2011;Caetano et al, 2013;Franco et al, 2014). However, even when all the optimal growing conditions are provided, the pineapple shows slow growth during the VGP (Cuzzuol et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon

Barreto,

Arcanjo Alves,

Ribeiro Rocha

et al. 2024

Com. Sci.

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The slow growth of the pineapple (Ananas comosus (L.) Merr.) during the vegetative phase prolongs the crop cycle, resulting in higher production costs. When used in low doses, some herbicides can stimulate plant growth, a phenomenon known as hormesis. The aim of this study was to determine the effects of sub-doses of glyphosate and 2,4-dichlorophenoxyacetic acid (2,4-D) on growth in the Pérola cultivar of the pineapple. The treatments under study consisted of glyphosate applications of 0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360 and 720 g a.e. ha-1, and 2,4-D applications of 0, 1.68, 3.35, 6.70, 16.75, 33.5, 67, 167.5, 335 and 670 g a.e. ha-1. The experiments were completely randomised with four replications. The plants were grown in the greenhouse in pots with a capacity of 8 dm3 substrate. Growth variables were evaluated in the plants, together with the total and partitioned accumulated biomass (leaf, stem and root). The data were submitted to analysis of variance and regression. The pineapple showed greater phytotoxicity from the glyphosate herbicide at applications ranging from 18 to 720 g a.e. ha-1 and from 2,4-D in the range of 167.5 to 670 g a.e. ha-1. The hormesis effect was evidenced by the 32.25% increase in root fresh weight at the dose of 1.8 g a.e. ha-1 glyphosate. However, the slow growth of the pineapple was not overcome by the hormesis effect of the herbicides.

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Diquat e ureia no manejo da floração natural do abacaxizeiro 'Pérola'

Cited by 5 publications

References 7 publications

Cultural treatments in pineapple crop. Management for high yield – Review

Cultural treatments in pineapple crop. Management for high yield – Review

Reproductive and vegetative behavior of hybrid jabuticaba tree under flowering induction

Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon

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