1986
DOI: 10.1080/00103628609367733
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Extraction of phosphorus, potassium, calcium, and magnesium from soils by an ion‐exchange resin procedure

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Cited by 312 publications
(115 citation statements)
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“…Ratios of c DGT to P concentration in a stirred solution were unaffected by varying pH (pH 3-9) and by increasing concentrations of chloride, sulfate and nitrate, while bicarbonate decreased c DGT , but only at very high concentrations that are unlikely to occur in soil solutions. [75] Anions are, therefore, not expected to have an interfering effect on DGT measurements of P in soils, whereas the resin method with an anion exchange membrane [76] is more subject to anionic interferences. The capacity of the Fe oxide gel is ∼2.5 µg P cm −2 , which corresponds to a c DGT of 450 µg L −1 for a 24 h deployment with a standard DGT device at 25 • C. [72,73] Saturation (i.e.…”
Section: The Dgt Techniquementioning
confidence: 99%
“…Ratios of c DGT to P concentration in a stirred solution were unaffected by varying pH (pH 3-9) and by increasing concentrations of chloride, sulfate and nitrate, while bicarbonate decreased c DGT , but only at very high concentrations that are unlikely to occur in soil solutions. [75] Anions are, therefore, not expected to have an interfering effect on DGT measurements of P in soils, whereas the resin method with an anion exchange membrane [76] is more subject to anionic interferences. The capacity of the Fe oxide gel is ∼2.5 µg P cm −2 , which corresponds to a c DGT of 450 µg L −1 for a 24 h deployment with a standard DGT device at 25 • C. [72,73] Saturation (i.e.…”
Section: The Dgt Techniquementioning
confidence: 99%
“…A produtividade do algodoeiro é influenciada pela temperatura, radiação solar e disponibilidade de água (Wells & Stewart 2010), fatores que podem ser alterados em função da época de semeadura. Além disso, variações no arranjo de plantas interferem no crescimento e desenvolvimento do algodoeiro.…”
unclassified
“…Os teores de P disponível no solo foram extraídos pelo método da Resina de Troca Aniônica (RAIJ et al, 1986). A partir disso, submetidos ao teste F, empregando a análise de variância para blocos ao acaso, em esquema de parcela subdividida, onde foi considerado como parcela os tratamentos e subparcela as seis profundidades amostradas.…”
Section: Tabelaunclassified