Rate‐Limited Boron Transport in Soils: The Effect of Soil Texture and Solution pH

Communar, Gregory; Keren, R.

doi:10.2136/sssaj2005.0259

Cited by 27 publications

(25 citation statements)

References 32 publications

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“…Silva et al (1995) studied B leaching in an Ultisol under cotton and reported that the nutrient reached a depth of 60 cm after nine years of annual borax application in the sowing furrow. While B mobility is favored by acidic conditions, the movement of the element in deeper layers is related to the application time and rate, initial concentration of the element (Rosolem & Biscaro, 2007), quantity of percolated water (Patil et al, 1997;Communar & Keren, 2006 and magnitude of soil absorption. Azevedo et al (2001) affirm that B absorption directly correlates with organic material content, specific clay surface, presence of kaolinite, and exchangeable Al.…”

Section: Boron Concentration In Relation To Soil Depthmentioning

confidence: 99%

“…While acidic conditions encourage B mobility, B movement in depth will be a function of applied rate, application date, initial concentration of the element in the soil (Rosolem & Biscaro, 2007), and quantity of water percolated (Patil et al, 1997;Communar & Keren, 2006.…”

Section: Boron Concentration In Relation To Soil Depthmentioning

confidence: 99%

“…Still, B movement in soil is mainly controlled by physical-chemical processes, which are determined by the adsorption/desorption phenomenon. The desorption rate is positively related to the rate of water percolation (Patil et al, 1997;Communar & Keren et al, 2006 and inversely with the concentration of clay and organic material content in the soil (Zerrari et al, 2001). The lower B concentrations below 0.20 m reflect the interaction of factors that influence its movement.…”

Section: Boron Concentration In Relation To Soil Depthmentioning

confidence: 99%

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Boron extraction and vertical mobility in Paraná State oxisol, Brazil

Neto

Muniz

Silva

et al. 2009

Rev. Bras. Ciênc. Solo

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The deficiency or excess of micronutrients has been determined by analyses of soil and plant tissue. In Brazil, the lack of studies that would define and standardize extraction and determination methods, as well as lack of correlation and calibration studies, makes it difficult to establish limits of concentration classes for analysis interpretation and fertilizer recommendations for crops. A specific extractor for soil analysis is sometimes chosen due to the ease of use in the laboratory and not in view of its efficiency in determining a bioavailable nutrient. The objectives of this study were to: (a) evaluate B concentrations in the soil as related to the fertilizer rate, soil depth and extractor; (0 a 0,05, 0,05 a 0,10, 0,10 a 0,15, 0,15 a 0,20, 0,20 a 0,30 e 0,30 a 0,40 m

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Section: Boron Concentration In Relation To Soil Depthmentioning

confidence: 99%

Section: Boron Concentration In Relation To Soil Depthmentioning

confidence: 99%

Section: Boron Concentration In Relation To Soil Depthmentioning

confidence: 99%

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Boron extraction and vertical mobility in Paraná State oxisol, Brazil

Neto

Muniz

Silva

et al. 2009

Rev. Bras. Ciênc. Solo

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“…A lixiviação de boro tem sido apontada como uma das causas de deficiência de boro, principalmente em solos arenosos (Silva et al, 1995;Communar & Keren, 2006), como o da área experimental (Tabela 2). Porém, a matéria orgânica, presente nas camadas superiores do solo (Tabela 1), pode ter complexado ou adsorvido parte do boro aplicado (Hatcher et al, 1967) e proporcionado, com o tempo, uma descomplexação ou dessorção, suficiente para atender a demanda da planta.…”

Section: Resultsunclassified

“…Porém, a matéria orgânica, presente nas camadas superiores do solo (Tabela 1), pode ter complexado ou adsorvido parte do boro aplicado (Hatcher et al, 1967) e proporcionado, com o tempo, uma descomplexação ou dessorção, suficiente para atender a demanda da planta. A lixiviação de boro pode ocorrer (Silva et al, 1995;Rosolem & Bíscaro, 2007), todavia é mais freqüente em solos arenosos, pobres em matéria orgânica e localizados em regiões chuvosas (Silva et al, 1995;Communar & Keren, 2006). Segundo Yamada (2000), as razões para não se aplicar doses de boro maiores que as atualmente praticadas são duas: a estreita faixa entre a deficiência e a toxidez de boro na planta e a facilidade de Frémond et al (1966).…”

Section: Resultsunclassified

Absorção e redistribuição de boro em coqueiro-anão-verde

Pinho¹,

Monnerat

Pires³

et al. 2008

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi verificar se ocorre redistribuição de boro em coqueiros (Cocos nucifera), quando a aplicação de ácido bórico é realizada na axila foliar ou no solo. Foram empregados os seguintes tratamentos com ácido bórico: 30 g aplicados sobre a axila da folha número 10; 60 g aplicados ao solo; e controle, sem aplicação. Foram realizadas duas aplicações de B, com um intervalo de cinco meses entre elas. A unidade experimental consistiu de duas plantas, com seis repetições, em delineamento inteiramente casualizado. Foram determinados os teores de boro nas folhas 2, 6, 10, 14 e 18, aos dois e quatro meses após a primeira aplicação de ácido bórico, e aos dois e cinco meses após a segunda aplicação. O boro se redistribuiu pela planta de coqueiro, independentemente da forma de aplicação. A elevação do teor de boro nas folhas persistiu por mais tempo, quando a aplicação de ácido bórico foi feita ao solo. As doses de ácido bórico aplicadas não causaram fitotoxidade, mesmo quando a aplicação foi repetida após um curto período.Termos para indexação: Cocos nucifera, filotaxia do coqueiro, micronutriente, nutrição mineral, translocação de boro. Boron absorption and redistribution in green dwarf coconut treeAbstract -The aim of this work was to verify if boron redistribution occurs among the coconut palm (Cocos nucifera) fronds, when boric acid is applied on frond axils or on soil. The treatments with boric acid were: 30 g applied on the axil of frond number 10; 60 g applied to the soil; and a control without boric acid application. The B applications were repeated after five-month interval. The experimental unit consisted of two plants, with six replicates, in a randomized complete block design. Boron contents were determined in fronds number 2, 6, 10, 14 and 18, two and four months after the first boric acid application, and two and five months after the second application. Boron was redistributed in coconut plants, regardless of the application form. Increases in boron concentration in fronds persisted longer when boric acid was applied to the soil. The applied doses of boric acid had no phytotoxity effect, even when the application was repeated after five months.

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Toxic Elements

Yermiyahu

Ben‐Gal

Keren

et al. 2010

Treated Wastewater in Agriculture

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In arid and semiarid regions treated wastewater (TWW) is quickly becoming a fundamental source of water for irrigation. Boron (B) is often present in freshwater in dry areas and is accumulated and concentrated in TWW as a consequence of domestic, industrial, and agricultural water use. Sources of B in sewage systems and TWW include: human and animal excretions, detergents, laundry powders, effluents from paper mills and metalcoating processes, among others. Boron can be toxic to plants and therefore, when B in TWW reaches concentrations high enough to limit plant growth, the potential for agricultural utilization of the water is threatened.Boron is an essential micronutrient for normal growth of most plants. At high environmental levels though, B is markedly toxic to plants. There is a relatively small range differentiating between soil solution B concentrations that are deficient and those that cause toxicity in plants ( Keren and Bingham, 1966).Boron is taken up into plants from the aqueous soil solution and the rate of B uptake is largely a function of the solution's B concentration. The concentration of B in soil solution is strongly affected by B-soil chemical interactions -primarily adsorption-desorption processes that are, in turn, affected by soil constituents and conditions. The nature of treated wastewater (TWW) and the soils in the dry (hyperarid, arid, and semiarid) regions where such water is typically utilized for irrigation have consequential effects on both soil B reactions and plant B uptake. Treated wastewaters characteristically have high concentrations of salts and dissolved organic matter (DOM). Soils of the relatively arid zones can typically be saline, contain high natural levels of B, and have relatively low organic matter contents (Tsadilas, 1997). Boron toxicity in plants as a result of irrigation with TWW is a phenomenon encountered throughout the world's dry regions. In spite of Treated W astewater in Agriculture: Use and Impacts on the Soil Environment and Crops Edited by Guy J. Levy, Pinchas Fine and Asher Bar-Tal

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Rate‐Limited Boron Transport in Soils: The Effect of Soil Texture and Solution pH

Cited by 27 publications

References 32 publications

Boron extraction and vertical mobility in Paraná State oxisol, Brazil

Boron extraction and vertical mobility in Paraná State oxisol, Brazil

Absorção e redistribuição de boro em coqueiro-anão-verde

Toxic Elements

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