Nitrogen fertilization in consecutive cycles and its impact on high-density peach crops

Ferreira, Letícia Vanni; Picolotto, Luciano; Pereira, Ivan dos Santos; Schmitz, Juliano Dutra; Antunes, Luís Eduardo Corrêa

doi:10.1590/s0100-204x2018000200005

Cited by 13 publications

(33 citation statements)

References 27 publications

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“…Management practices performed in peach orchards notably pruning, irrigation, fertilization, phytosanitary treatments, as well as fruit thinning directly affect the yield and quality of fruits (Raseira, Nakasu, & Barbosa, 2014;Oliveira, Marodin, Almeida, Gonzatto, & Darde, 2017;Ferreira, Picolotto, Pereira, Schmitz, & Antunes, 2018). In fruit plants, thinning is aimed at reducing fruit load and providing an adequate size for sale, in addition to preventing alternating production (Petri, Couto, Gabardo, Francescatto, & Hawerroth, 2016).…”

Section: Introductionmentioning

confidence: 99%

Metamitron in the chemical thinning of ‘PS 10711’ peach trees

Farias

Barreto

Zandoná

et al. 2020

Semina: Ciênc. Agrár.

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Chemical thinning of fruits may be an alternative practice to hand thinning. Hand thinning must be performed in a short time during the fruiting stage, but lack of manpower and the onerous costs of the operation make it increasingly difficult to employ it at the right time and at the ideal intensity. The objective of this study was to examine the effect of different concentrations of metamitron as a chemical thinner on ‘PS 10711’ peach trees. The experiment was carried out during two harvests in an orchard in the municipality of Eldorado do Sul, in the Central Depression region of the state of Rio Grande do Sul, Brazil. Treatments consisted of the application of metamitron at the concentrations of 100, 200, 300 and 400 mg L-1; hand thinning; and no thinning. The fruits were thinned chemically and by hand 40 days after the peach trees were in full bloom. Fruit abscission, fruit set, number of fruits, production per tree and fruit quality were evaluated. Metamitron has a thinning effect on the peaches of cultivar PS 10711. The metamitron concentrations of 100 and 200 mg L-1 result in less fruit abscission as compared with hand thinning. The thinning effect of metamitron alters production per tree, but does not interfere with fruit quality.

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Section: Introductionmentioning

confidence: 99%

Metamitron in the chemical thinning of ‘PS 10711’ peach trees

Farias

Barreto

Zandoná

et al. 2020

Semina: Ciênc. Agrár.

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“…Regarding commercialization, mainly of fruit to be consumed fresh, it is fundamental to yield highquality fruits since, according to Trevisan et al (2010), attributes, such as size, color, flavor and absence of defects, attract consumers and play a decisive role at the time of purchase. These quality characteristics are closely related to the cultivar genetics, to edafoclimatic conditions and to the use of cultural techniques, such as adequate irrigation, pruning, phytosanitary treatments, thinning and fertilization (GONÇALVES et al, 2014;RASEIRA, 2014;FERREIRA et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Nitrogen (N) is the most important nutrient for stone fruit trees (ROMBOLÀ et al, 2012); it is the second most exported mineral element through fruits yielded by peach trees (TAGLIAVINI et al, 2000) and the most exported one through leaves and twigs (XILOYANNIS;CELANO;NUZZO, 2006). Therefore, N fertilization is essential to peach trees, since it may interfere in aspects related to vegetative growth, productivity and fruit quality (DOLINSKI et al, 2005;FALGUERA et al, 2012;FERREIRA et al, 2018;DOLINSKI et al, 2018). N excess may stimulate vegetative growth of peach trees (DELLA BRUNA;BACK, 2014;FERREIRA et al, 2018), while N deficiency may affect plant photosynthesis (LEAL et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, N fertilization is essential to peach trees, since it may interfere in aspects related to vegetative growth, productivity and fruit quality (DOLINSKI et al, 2005;FALGUERA et al, 2012;FERREIRA et al, 2018;DOLINSKI et al, 2018). N excess may stimulate vegetative growth of peach trees (DELLA BRUNA;BACK, 2014;FERREIRA et al, 2018), while N deficiency may affect plant photosynthesis (LEAL et al, 2007). N fertilization may also exert influence on qualitative characteristics of fruits, such as size (DELLA BRUNA; BACK, 2014), epidermis color (BARRETO et al, 2017), pulp firmness, soluble solid content (CAMPOS et al, 1996), phenolic compounds, antioxidant activity (FERREIRA et al, 2016;BARRETO et al, 2017;VASHISTH et al, 2017) and carotenoid content (FERREIRA et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen fertilization associated with cold storage and its impacts on the maintenance of peach quality

Barreto

Navroski²,

Ferreira³

et al. 2020

Biosci. J.

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Nitrogen, which is considered the most important nutrient for peach trees, may interfere in both quantitative production characteristics and quality of fruits. This study aimed at evaluating the effect of the combination of doses of N fertilization and different periods of cold storage on physico-chemical and phytochemical characteristics of peaches in post-harvest. The experiment had a randomized complete block design in a 4x3 factorial scheme, i. e., four doses of fertilization (0, 60, 120 and 180 Kg N ha-1) and three periods of storage (on the harvest day, on both the 15th and the 30th storage days at 1±1ºC, each followed by a day of simulated commercialization at 20±1ºC). The following aspects were evaluated in fruits yielded by peach trees of the genotype Cascata 1067: fruit color, soluble solid content, titratable acidity, pulp firmness, mass loss, total phenolic compounds and antioxidant activity. Different periods of cold storage and doses of N fertilization were found to affect epidermis luminosity, pulp firmness and titratable acidity of fruits. Peaches may be stored at low temperatures for 15+1 days. After that, loss of fruit firmness increases. N fertilization affects neither the soluble solid content nor the epidermis color of peaches, but both parameters are influenced by storage. Values of phenolic compounds and antioxidant activity decrease when there is N increment in the soil and when longer storage is carried out. Results suggest that peach composition may be affected by cultural practices, such as N fertilization, in harvest and after storage.

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“…A prática utilizada no mundo todo para determinar o estado nutricional das frutíferas é a análise foliar de nutrientes (JOHNSON et al, 2006). A dose de nitrogênio é recomendada de acordo com o seu teor total na folha, sendo que a aplicação do nutriente deverá ser parcelada durante a plena floração e após o raleio e colheita de frutas, e variam de acordo com o teor de matéria orgânica do solo, com a idade do pomar (CQFS RS/SC, 2016) e com o genótipo, mas também tendo como referência o crescimento e a produtividade (FERREIRA et al, 2018). O crescimento, segundo estes últimos autores, aumenta de forma linear com o acréscimo de nitrogênio.…”

Section: Introductionunclassified

Composição mineral das folhas de pessegueiro sob a influência da adubação nitrogenada de crescimento

Ferreira¹,

Picolotto²,

Schmitz³

et al. 2020

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Teores de nutrientes foliares indicam o estado nutricional da planta e auxiliam na recomendação de adubação. Além disso, plantas bem nutridas apresentam um adequado desenvolvimento vegetativo, o que resulta em boa produtividade de frutos. Objetivou-se, com o presente trabalho, avaliar a composição foliar de macro e micronutrientes de pessegueiros em crescimento, cultivados em alta densidade de plantio, submetidos a distintas doses de nitrogênio. O trabalho foi conduzido na área experimental da Embrapa Clima Temperado, entre 2012 e 2015. O delineamento experimental foi o de blocos casualizados em parcelas subdivididas segundo fatorial 2 x 4: duas seleções (‘Cascata 1067’ e ‘Cascata 1513’) e quatro doses de N baseadas em valores da comissão de química e fertilidade do solo (0, 30, 60 e 120 kg N ha-1), conduzidas em quatro repetições, constituídas por quatro plantas. Foi avaliada a concentração foliar de macro e micronutrientes nos anos de 2012, 2013 e 2014. A aplicação de N em pomares adensados aumenta o teor do nutriente nas folhas. Os níveis de nitrogênio influenciam o estado nutricional das plantas cultivadas em alta densidade. A adubação nitrogenada até 120 kg ha-1 é insuficiente para manter os teores foliares de N em níveis considerados normais no terceiro ano após o plantio.

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Nitrogen fertilization in consecutive cycles and its impact on high-density peach crops

Cited by 13 publications

References 27 publications

Metamitron in the chemical thinning of ‘PS 10711’ peach trees

Metamitron in the chemical thinning of ‘PS 10711’ peach trees

Nitrogen fertilization associated with cold storage and its impacts on the maintenance of peach quality

Composição mineral das folhas de pessegueiro sob a influência da adubação nitrogenada de crescimento

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