Extração de cobre e de zinco por soluções multielementares em solos do sul do Brasil

Bortolon, Leandro; Gianello, Clésio

doi:10.1590/s0103-84782010005000035

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Autor para correspondência. Como há a busca por soluções extratoras multielementares que apresentem boa correlação com os teores extraídos pelos métodos atuais, e que atendam à maioria dos requisitos necessários para um bom extrator, o meio científico tem realizado várias pesquisas com o método multielementar Mehlich 3 (BRENANN et al, 2008;BORTOLON & GIANELLO, 2009;BORTOLON & GIANELLO, 2010). O método Mehlich 3 (MEHLICH, 1984) (ABREU et al, 2007), tornando-se necessária a avaliação da efetividade da solução Mehlich 3 na extração destes nutrientes nesta condição.…”

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Método Mehlich 3 como substituinte ao HCl para extração de Cobre e Zinco em solos com alto teor de matéria orgânica do sul do Brasil

2012

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Método Mehlich 3 como substituinte ao HCl para extração de Cobre e Zinco em solos com alto teor de matéria orgânica do sul do Brasil

2012

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Options to reduce ranges in critical soil nutrient levels used in fertilizer recommendations by accounting for site conditions and methodology: A review

Siatwiinda,

Ros,

Yerokun

et al. 2024

Agron. Sustain. Dev.

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Fertilizer recommendations (FR) to improve yields and increase profitability are based on relationships between crop yields and soil nutrient levels measured via soil extraction methods. Within these FR, critical soil nutrient (CSN) levels are used to distinguish nutrient deficient from non-deficient soils. The variation in CSN levels is large, implying a risk of over- or under-fertilization. Here, we review and assess the factors influencing the derivation of CSN levels in order to increase both their reliability and applicability within FR systems. The evaluated factors included site conditions, i.e., crop type and location as a surrogate for climate and soil properties, and methodological factors, i.e., the experimental approach (field or pot experiments), and statistical methods and cut-off point. Results showed that the range of values used to define the medium soil fertility classes coincided with the range of CSN levels derived from experimental data. We show that harmonizing methodological aspects can substantially reduce the uncertainty in the CSN levels (> 50%), implying a substantial enhancement of the reliability of FR systems. Inclusion of site conditions might further improve the reliability. To enable reduction in CSN levels requires well-documented field experiments and standardization of data collection and analysis. We foresee the potential for generic FR systems that make use of reliable data, more process-based interpretation of nutrient pools and accounting for the interactions among nutrients.

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Application of the Multicomponent Spectral Fitting Algorithm in the Estimation of the Correct Value of Phosphorus determined by ICP OES in Soil Samples

Santos¹,

Bley

Selau

et al. 2019

Communications in Soil Science and Plant Analysis

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Extração de cobre e de zinco por soluções multielementares em solos do sul do Brasil

Cited by 3 publications

References 7 publications

Método Mehlich 3 como substituinte ao HCl para extração de Cobre e Zinco em solos com alto teor de matéria orgânica do sul do Brasil

Método Mehlich 3 como substituinte ao HCl para extração de Cobre e Zinco em solos com alto teor de matéria orgânica do sul do Brasil

Options to reduce ranges in critical soil nutrient levels used in fertilizer recommendations by accounting for site conditions and methodology: A review

Application of the Multicomponent Spectral Fitting Algorithm in the Estimation of the Correct Value of Phosphorus determined by ICP OES in Soil Samples

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