Chemical fractionation of phosphorus, sulphur, and molybdenum in Brazilian savannah Oxisols under different land use

Lilienfein, Juliane; Wilcke, Wolfgang; Ayarza, Miguel A.; Vilela, Lourival; Lima, Samuel do Carmo; Zech, Wolfgang

doi:10.1016/s0016-7061(00)00002-1

Cited by 78 publications

(60 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As reported by Lilienfein et al (2000), the effects of P uptake by plant in short-time are more evident in labile and moderately labile P fractions. In relation to NaOH 0.1M-Pi and NaOH 0.5M-Pi, moderately labile fractions, this comprises the P bound in Fe/Al oxy-hydroxides, the content of both fractions increased with the increment of P fertilizer rates.…”

Section: Soil Inorganic Phosphorus (Pi) Fractionssupporting

confidence: 62%

Phosphorus and silicon fertilizer rates effects on dynamics of soil phosphorus fractions in oxisol under common bean cultivation

Alovisi¹,

Neto²,

Serra³

et al. 2016

Afr. J. Agric. Res.

View full text Add to dashboard Cite

The purpose of this research was to evaluate the effects of P and Si fertilizer rates in dynamic of P fractions in clay soil under greenhouse. The research was carried out in a Dystroferric Red Latosol of a very loamy texture from Lavras city, Minas Gerais State, Brazil. The experimental design was entirely randomized, arranged in 4 × 3 factorial design, with four repetitions. The treatments included four inorganic fertilizer P rates (0, 110, 330 and 560 mg dm ). The preview application of Si fertilizer did not contribute to decrease P desorption. Possibly, the silicate has lower affinity with the bound sites of adsorption than phosphates. The effects of inorganic fertilizer P were higher in increasing the moderately labile and labile P inorganic fractions. Among the organic P fractions, the NaHCO 3 -Po fraction was the only one that contributes to plant nutrition. The Hedley sequential phosphorus fractionation promoted information about different pools where P was accumulated in the soil after common bean cultivation. The highest amount of P was obtained in stable P fraction, followed by moderately labile and labile P fraction. The moderately labile P fraction decreased after common bean cultivation possibly due to the time of P contact in the soil and redistribution to stable P fraction. The labile form was the lowest P pool in soil; nevertheless the increase in fertilizer P rates increases the amount of P content in labile fraction.

show abstract

Section: Soil Inorganic Phosphorus (Pi) Fractionssupporting

confidence: 62%

Phosphorus and silicon fertilizer rates effects on dynamics of soil phosphorus fractions in oxisol under common bean cultivation

Alovisi¹,

Neto²,

Serra³

et al. 2016

Afr. J. Agric. Res.

View full text Add to dashboard Cite

show abstract

“…According to Lilienfein et al (2000) this fraction slowly transforms into less available forms over time.…”

Section: Resultsmentioning

confidence: 99%

Phosphate fertilization and phosphorus forms in an Oxisol under no-till

Olibone

Rosolem

2010

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Under no-till phosphorus (P) accumulates in a few centimeters of the topsoil layer. Plant residues left on the soil surface release P and organic acids, which may improve P availability and fertilizer efficiency, including both soluble (such as triple super phosphate) and less soluble sources (such as reactive natural phosphates). In this study, soybean response to P fertilizer and P forms in the top 40 cm of an Oxisol were evaluated after surface application of different phosphates in a 5-year-old no-till system. Treatments consisted of 0 or 80 kg ha -1 of total P 2 O 5 applied on the soil surface, both as natural reactive phosphate (NRP) or triple super phosphate (TSP). In addition, 80 kg ha -1 of P 2 O 5 were applied to subplots, in furrows below and beside the soybean (Glycine max L.) seeds, in different combinations of NRP and TSP. Soil samples were taken before and after the soybean growth, down to 0.40 m and soil phosphorus was chemically fractionated. The responses to NRP were similar to TSP, with an increase in P reserves at greater depths, even in non-available forms, such as P-occluded. After the soybean harvest, P-occluded levels were lower at the surface layer, but an increase was observed in the soluble, organic and total P down to 40 cm. An improved P distribution in soil depth, especially regarding the soluble and organic forms, resulted in higher soybean yields, even when the phosphates were applied to the soil surface. Key words: reactive phosphate, superphosphate, phosphorus fractions, conservation tillageAdubação fosfatada e formas de fósforo num Latossolo sob sistema de semeadura direta RESUMO: Em semeadura direta o fósforo (P) acumula-se na camada mais superficial do solo, mas os resíduos deixados na superfície liberam P e ácidos orgânicos, que podem melhorar a disponibilidade e a eficiência de fertilizantes como o superfosfato triplo e fosfatos naturais reativos. Neste estudo, a resposta da soja à adubação com P e as formas de P até 40 cm de profundidade do solo foram avaliadas após a aplicação de fosfatos em um sistema conduzido em semeadura direta há cinco anos. Os tratamentos consistiram de 0 ou 80 kg ha -1 P 2 O 5 total, aplicados na superfície do solo como fosfato natural reativo (FNR) ou superfosfato triplo (SFT). Nas subparcelas foram aplicados, no sulco de semeadura, 80 kg ha -1 de P 2 O 5 , em diferentes combinações de FNR e SFT. Amostras de solo foram coletadas até 0.4 m, antes e depois do cultivo da soja (Glycine max L.), para fracionamento do P. As respostas ao FNR foram semelhantes às do SFT, com aumento das reservas de P em profundidade, mesmo em formas não-disponíveis como P-ocluso. Após a colheita da soja, os teores de P-ocluso diminuíram na camada mais superficial, mas foi observado um aumento nas formas solúvel, orgânica e P -total em toda a espessura de solo estudada. A melhor distribuição do P no solo, principalmente em formas solúvel e orgânica, resultou em maior produtividade da soja, mesmo quando o fertilizante foi aplicado na superfície do solo. Palavras-c...

show abstract

“…Phosphorus fractions across land uses were similar to those observed elsewhere for cultivated and uncultivated Oxisols. Across all land uses the most-plant-available P (NaHCO 3 P t ) accounted for less than 10 per cent of total P and the majority of P was in the NaOH (relatively plant-available) and residual fractions [39,[47][48][49][50][51]. The general increase in P concentrations in all fractions with increasing time in cultivation supports the concept of reversible exchange among soil P pools [1,3].…”

mentioning

confidence: 77%

The fate of phosphorus fertilizer in Amazon soya bean fields

Riskin

Porder

Neill

et al. 2013

Phil. Trans. R. Soc. B

View full text Add to dashboard Cite

Fertilizer-intensive soya bean agriculture has recently expanded in southeastern Amazonia, and whereas intensive fertilizer use in the temperate zone has led to widespread eutrophication of freshwater ecosystems, the effects in tropical systems are less well understood. We examined the fate of fertilizer phosphorus (P) by comparing P forms and budgets across a chronosequence of soya bean fields (converted to soya beans between 2003 and 2008) and forests on an 800 km 2 soya bean farm in Mato Grosso, Brazil. Soya bean fields were fertilized with 50 kg P ha −1 yr −1 (30 kg P ha −1 yr −1 above what is removed in crops). We used modified Hedley fractionation to quantify soil P pools and found increases in less-plant-available inorganic pools and decreases in organic pools in agricultural soils compared with forest. Fertilizer P did not move below 20 cm. Measurements of P sorption capacity suggest that while fertilizer inputs quench close to half of the sorption capacity of fast-reacting pools, most added P is bound in more slowly reacting pools. Our data suggest that this agricultural system currently has a low risk of P losses to waterways and that long time-scales are required to reach critical soil thresholds that would allow continued high yields with reduced fertilizer inputs.

show abstract

Chemical fractionation of phosphorus, sulphur, and molybdenum in Brazilian savannah Oxisols under different land use

Cited by 78 publications

References 23 publications

Phosphorus and silicon fertilizer rates effects on dynamics of soil phosphorus fractions in oxisol under common bean cultivation

Phosphorus and silicon fertilizer rates effects on dynamics of soil phosphorus fractions in oxisol under common bean cultivation

Phosphate fertilization and phosphorus forms in an Oxisol under no-till

The fate of phosphorus fertilizer in Amazon soya bean fields

Contact Info

Product

Resources

About