Boron extraction and vertical mobility in Paraná State oxisol, Brazil

Neto, Waldemar de Oliveira; Muniz, Antônio Saraiva; Silva, Maria Anita Gonçalves da; Castro, C. de; Borkert, C. M.

doi:10.1590/s0100-06832009000500019

Cited by 12 publications

(7 citation statements)

References 24 publications

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“…The high rainfall, associated with the sandy texture of the soil, favor the leaching of B to deeper layers, decreasing the concentration in the collection layer. Boron leaching in the soil has also been observed in other studies (ROSOLEM; BISCARO, 2007;OLIVEIRA et al, 2009), justified by the high rainfall that occurred in a medium texture soil, low organic matter content and low pH. These results help to understand the non-occurrence of symptoms, because when B is added to the soil a large part can be lost by leaching.…”

Section: Resultssupporting

confidence: 76%

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Lindolfo¹,

Matos

Fernandes

2020

Rev. Bras. Frutic.

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Due to the increasing national and international demand, the cultivation of açaí palm trees (Euterpe oleracea Mart.) has expanded to upland areas in Brazil. Most of these areas present low natural soil fertility, in which boron (B) is one of the most limiting nutrients. This study aimed to evaluate the productivity of fresh fruits of fertigated açaí trees submitted to doses of B. The study was carried out in Tomé-Açu, northeastern Pará, Brazil. The experimental design consisted of randomized blocks with four treatments: control and addition of 20, 40 and 60 g of B clump-1. After 17 months, bunches of fresh fruits were collected and the production per hectare was estimated. An economic analysis was carried out considering the costs of fertilization and fruit production. The productivities obtained in the treatments were considered above the average of the municipality of Tomé-Açu. The estimated content of leaf B that provided the highest productivity was 14.9 mg kg-1, for a yield of 5479 kg ha-1 year-1¸ while the critical content corresponded to 13.2 mg kg-1. The highest productivity of fresh açaí fruits was achieved with the dose of 20 g of B clump-1, which provided a net gain of 42%.

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Section: Resultssupporting

confidence: 76%

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Lindolfo¹,

Matos

Fernandes

2020

Rev. Bras. Frutic.

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“…Averaged across unlimed treatments, 26 % of the applied B was leached after 15 percolations with distilled water; in the limed treatments, however, only 15 % were leached (Figure 1). Thus, besides the reasonable mobility of B in soils (Oliveira Neto et al, 2009), its residual effect in this Oxisol was high because more than 70 % of the applied B still remained in the soil after all percolations, which corresponded to 570 mm of irrigation distributed in 15 weekly events.…”

Section: Resultsmentioning

confidence: 93%

“…In addition, B has the highest vertical mobility in the profile (Oliveira Neto et al, 2009;Souza et al, 2012) because at the pH values normally found in soils this nutrient is predominantly found in the soil solution as H 3 BO 3 0 . This neutral form is chemisorbed with less intensity to soil solid components than its anionic form (H 4 BO − 4 ).…”

Section: Introductionmentioning

confidence: 99%

“…This neutral form is chemisorbed with less intensity to soil solid components than its anionic form (H 4 BO − 4 ). Consequently, a significant fraction of soil applied B remains in the soil solution, available for plant uptake, but also susceptible to leaching (Pavan and Correa, 1988;Silva et al, 1995;Rosolem and Bíscaro, 2007;Oliveira Neto et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Boron Leaching Decreases withIncreases on Soil pH

Sá

Ernani

2016

Rev. Bras. Ciênc. Solo

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Management of boron fertilization depends on the magnitude of B leaching in the soil profile, which varies proportionally with the concentration of B in the soil solution, which, in turn, decreases as the soil pH increases due to the higher sorption of B on soil solid surfaces. The objective of this study was to quantify the effect of liming and rates of B applied to the soil on B leaching. The experiment was carried out in the laboratory in 2012, and treatments consisted of a factorial combination of two rates of liming (without and with lime to raise the soil pH to 6.0) and five rates of B (0, 10, 20, 50 and 100 mg kg Boron was manually mixed with the top 0.15 m of the soil. After that, every seven days for 15 weeks, 300 mL of distilled water were added to the top of each column. In the percolated solution, both the volume and concentration of B were measured. Leaching of B decreased with increased soil pH and, averaged across the B rates applied, was 58 % higher from unlimed (pH 4.6) than from limed (pH 6.6) samples as a result of the increase in B sorption with higher soil pH. In spite of its high vertical mobility, the residual effect of B was high in this oxisol, mainly in the limed samples where 80 % of B applied at the two highest rates remained in the soil, even after 15 water percolations.Total recovery of applied B, including leached B plus B extracted from the soil after all percolations, was less than 50 %, showing that not all sorbed B was quantified by the hot water extraction method.

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“…B deficiency is very common, especially in sandy, organic matter-poor soils, because it can be leached to deeper soil layers, where the root system of plants does not reach, or due to periods of low moisture and under conditions of soil with exaggerated application of limestone, which hamper the absorption of nutrients by plants (Azevedo, 2001), resulting in decreases in yield and quality of the harvested product. The performance of B fertilization is directly related to the rapid leaching to deeper soil layers (Saltali et al, 2005;Communar and Keren, 2007;Favaretto et al, 2007;Oliveira Neto et al, 2009), mainly due to the high mobility of this nutrient in the soil solution. In addition, the high availability of the applied B, combined with the narrow range between deficiency and toxicity in plants, can easily lead to toxicity (Communar and Keren, 2007;Lima et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Boron Dynamics in Agricultural Soils of the Cerrado: Study on Sources, Doses and Leaching

Silva

Cunha

Dias

et al. 2022

JAS

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The objectives of this study were: to evaluate the leaching potential of B in a Latossolo Vermelho-Amarelo (Oxisol) as a function of sources and doses of this micronutrient; among the sources tested (boric acid, ulexite and the commercial source H2 Boro), to determine the one with the lowest leaching potential; to evaluate leaching losses at different doses in each soil layer evaluated; and to identify chemical and physical variables of soils that influence B leaching. For that, two experiments were conducted in a greenhouse. The first one tested B leaching in the soil, with the three sources under study and five doses of B (0; 12; 24; 36; and 48 kg ha-1), whereas the second experiment evaluated the influence of soil physical and chemical attributes on B leaching using soils randomly collected in 22 localities in southeastern Goiás, Brazil. Regardless of the dose applied, ulexite led to the lowest soluble B content in the profile of the analyzed soils and also in the leachate. Boric acid was the only source that showed a different behavior in relation to B content in the different soil layers and in the leachate. In the soil layer from 21 to 30 cm, ulexite is the source with the lowest soluble B content. The behaviors of the more soluble sources, in this case boric acid and H2 Boro (H2 Agrosciences - Monoethanolamine borate), regardless of the dose, are very similar, being highly leachable in the profile of the Oxisol used. Soils with clayey texture and higher values of H+Al and CEC were able to retain higher B contents in the upper portion their profiles (layers from 0 to 10 cm and 11 to 20 cm), but soils with sandy texture and higher values of sum of bases showed greater B losses by leaching.

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Boron extraction and vertical mobility in Paraná State oxisol, Brazil

Cited by 12 publications

References 24 publications

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Boron Leaching Decreases withIncreases on Soil pH

Boron Dynamics in Agricultural Soils of the Cerrado: Study on Sources, Doses and Leaching

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