Aplicación de boro en eucalipto: comparación de fuentes

Ferrando, Marcelo; Zamalvide, J.

doi:10.1590/s0100-67622012000600020

Cited by 4 publications

(4 citation statements)

References 13 publications

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“…These results are in agreement with those obtained by Ferrando and Zamalvide (2012), who reported in a study performed in Uruguay that sources of B with different solubilities applied at planting did not significantly influence the foliar concentrations of the element, i.e., both the medium and high solubility sources provided good availability of B to the eucalyptus trees because the leaf B concentrations were within the range considered adequate for the species studied. ns -not significant by the F test, at 5% probability.…”

Section: Resultssupporting

confidence: 92%

Sources and application methods of boron in Eucalyptus crop

et al. 2015

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Cerrado soils have low boron (B) content, making supplementation of this element through fertilization via soil and/or leaf is a common practice. It is therefore important to establish the best mode of application and source of B for the proper development of eucalyptus. Thus, the objective of this study was to compare the effect of B sources with high and low solubility on eucalyptus cultivation and to examine the effect of foliar application of the micronutrient. The experiment was conducted in an area located at 20 o 34' S latitude and 51 o 50' W longitude with an altitude of 305 m during the period from January 2012 to February 2014. The experiment was set up using a randomised complete block design with six treatments and five replications, in a 3 x 2 factorial scheme, consisting of 0 kg ha -1 of B, 1 kg ha -1 of B using boric acid as a source (high solubility, 17% B) or 1 kg ha -1 of B using borogran as a source (low solubility, 10% B), applied to the planting furrow, with or without foliar application of 0.5% boric acid in a solution with a volume of 250 L ha -1 . Except for the case of foliar B application, there was an increase in plant height in treatments that received the micronutrient at planting, which differed significantly from the control. However, both sources, independent of solubility, exhibited similar results. The two foliar B applications were sufficient to cause an increase in plant height when compared to treatments without B application at planting, at 21 months. At 24 months after planting, an increase in leaf B was observed in treatments with foliar application. However, this did not improve growth, diameter at breast height (DBH) or timber volume of the eucalyptus clone. Both the application of B at planting (independent of the source used) and the foliar application of the element were sufficient to reduce the symptoms of B deficiency. With respect to the sources used at planting, at a dose of 1 kg ha de 3 x 2, sendo: 0 kg ha -1 de B, 1 kg ha -1 de B utilizando como fonte o ácido bórico (alta solubilidade, 17% B) ou1 kg ha -1 de B utilizando como fonte o borogran (baixa solubilidade, 10% B), aplicados no sulco de plantio, com ou sem aplicações de ácido bórico via foliar na dose de 0,5% de ácido bórico na calda com volume de 250 L ha -1 . Com a omissão de B via foliar houve incremento em altura de plantas nos tratamentos que receberam a aplicação do micronutriente no plantio, diferindo significativamente da testemunha. Porém, ambas as fontes, independente da solubilidade, apresentaram resultados semelhantes. As duas aplicações de B via foliar foram suficientes para que houvesse incremento em altura de plantas, quando comparadas aos tratamentos que não receberam aplicação de B no plantio, aos 21 meses. Aos 24 meses após o plantio foi constatado aumento no teor foliar de B nos tratamentos que receberam aplicação foliar. No entanto, esta não incrementou o crescimento, DAP e volume de madeira do clone de eucalipto. A aplicação de B no plantio, independente da fonte utilizada, ass...

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Section: Resultssupporting

confidence: 92%

Sources and application methods of boron in Eucalyptus crop

et al. 2015

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“…Em se tratando do manejo sem irrigação, Mattiello et al (2009) relatam que mesmo com baixo teor deste nutriente ou com o déficit hídrico, o boro ainda é assimilado pelo eucalipto por meio do fluxo difusivo. Esse aumento de concentração de boro pode ser atribuído à resposta da cultura do eucalipto na emissão de raízes mais profundas diante de ambientes com menor disponibilidade hídrica (FERRANDO;ZAMALVIDE, 2012), propiciando a maior probabilidade do encontro de B no solo e sua absorção.…”

Section: Resultsunclassified

Teor de nutrientes foliares e produtividade de híbridos de eucalipto submetidos à irrigação localizada em Aquidauana – MS

Brito

Lopes

Júnior

et al. 2021

RCA

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A silvicultura apresenta forte papel no desenvolvimento econômico e social brasileiro e no estado de Mato Grosso do Sul. O eucalipto é a cultura florestal mais bem cultivada, devido aos altos investimentos tecnológicos em sua produção, uso de pesquisa de ponta e consequentes aumentos na demanda dos produtos oriundos desta espécie. Porém, como qualquer vegetal exposto as mais variadas situações a campo, entre as mais comuns de se achar são a deficiência hídrica e nutricional, que desencadeiam comportamentos fisiológicos indesejáveis. Assim esse trabalho teve como objetivo relacionar a concentração de nutrientes foliares (nitrogênio, fósforo e boro) com o volume de madeira do eucalipto submetidos à dois sistemas de irrigação. O experimento foi realizado na área experimental de irrigação da Universidade Estadual de Mato Grosso do Sul, em Aquidauana-MS. O delineamento experimental empregado foi em blocos casualizados, com parcelas subdivididas, utilizando quatro repetições. As parcelas foram compostas pelos tratamentos de irrigação (gotejamento e microaspersão) e área sem irrigação; e as subparcelas compostas pelos híbridos de eucalipto, apenas com adubação de plantio. Os maiores acúmulos de biomassa foram apresentados pelos tratamentos irrigados. O nitrogênio foliar não variou significativamente nos períodos avaliados, porém, obteve correlação positiva com o volume de madeira para o manejo sem irrigação. Os tratamentos irrigados proporcionaram maiores concentrações foliares de fósforo e volume de madeira. O boro foi o nutriente mais suscetível a variações foliares.

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“…When in forest sites in Uruguay, Ferrando & Zamalvide (2012) evaluated the effect from B sources with different solubilities (ulexite and sodium borate) at the 4 g plant -1 dose of B, and concluded that both sources provide foliar concentrations of B within the range considered suitable for cultivation. In this study, there was no difference between sources, since both provided adequate concentrations of foliar B for eucalyptus, according to the range considered adequate by Gonçalves (2011), 30-60 mg kg -1 of B.…”

Section: ( )mentioning

confidence: 99%

Management of boron fertilization in eucalyptus cultivated in the low altitude Cerrado region in Entisol

Celestrino

Buzetti

Filho

et al. 2019

Agraria

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This study aimed to compare the residual effect from boron (B) sources in the planting furrow as well as foliar applications of B, and the top dressing reapplication of micronutrient in boron nutrition, wood productivity and the tree fork of the eucalyptus cultivated in an Entisol. The experiment was assembled in a subdivided plots scheme, arranged in a factorial scheme of 3 x 2 x 2, with the first factor being: 0 kg ha-1 of B, 1 kg ha-1 of B using borogran fertilizer or 1 kg ha-1 of B using boric acid fertilizer in the furrow; with or without B application via leaves (boric acid); and the last factor 2, it refers to the subplots that received or not the top dressing application of B in the soil at 34 months after the planting at the 1 kg ha-1 dose of B (boric acid). Boron sources, at a 1 kg ha-1 dose, as well as the foliar nutrient applications, at 4 and 10 months after planting, reduced the tree fork percentage of eucalyptus trees. The 1 kg ha-1 application of B in the eucalyptus plantation (I144 clone) was not enough in a soil with average B content, being necessary the top dressing reapplication of this nutrient, with positive reflexes in the B content in the soil, and consequently, in the B foliar concentration and wood productivity.

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Aplicación de boro en eucalipto: comparación de fuentes

Cited by 4 publications

References 13 publications

Sources and application methods of boron in Eucalyptus crop

Sources and application methods of boron in Eucalyptus crop

Teor de nutrientes foliares e produtividade de híbridos de eucalipto submetidos à irrigação localizada em Aquidauana – MS

Management of boron fertilization in eucalyptus cultivated in the low altitude Cerrado region in Entisol

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