Fate of phosphorus applied to soil in pig slurry under cropping in southern Brazil

Boitt, Gustavo; Schmitt, Djalma Eugênio; Gatiboni, Luciano Colpo; Wakelin, Steven A.; Black, Amanda; Sacomori, Wagner; Cassol, Paulo Cézar; Condron, Leo M.

doi:10.1016/j.geoderma.2018.02.010

Cited by 48 publications

(37 citation statements)

References 62 publications

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“…The amount of P exported from the field through the grains were calculated as a function of grain P concentration (%) and grain yield (kg ha −1 ). Phosphorus balance efficiency was calculated by the following equation (Simpson et al, 2011;Boitt et al, 2018):…”

Section: Soil and Plant Sampling And Analysesmentioning

confidence: 99%

Cover Cropping May Alter Legacy Phosphorus Dynamics Under Long-Term Fertilizer Addition

Soltangheisi

Teles

Sartor

et al. 2020

Front. Environ. Sci.

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Use of cover crops in an integrated agricultural system can reduce demand of inorganic phosphorus (P) fertilizers, where the subsequent crops can take up P accumulated in cover crops biomass after the decomposition. In this research we hypothesized that some cover crops can take up P from less labile fractions and recycle it back to the soil through plant residues resulting in better P use efficiency of the system; cover crops are capable of P uptake from subsurface layers which leads to the accumulation of this P on the surface after the decomposition of their residues; and cover crop species respond differently to distinct inorganic P sources. To examine these hypotheses, a field experiment was conducted over nine successive years in South Brazil. The experimental treatments were established as a split-plot randomized block design, in a 3 × 6 factorial scheme, considering three P treatments [no-P, single superphosphate (SSP), and rock phosphate (RP)] as main plot and six cover crop treatments (common vetch, white lupin, fodder radish, ryegrass, black oat, and a fallow) as subplots. Soil samples were collected from the depths of 0-5, 5-10, and 10-15 cm and analyzed by Hedley P fractionation. In P-unfertilized cropping system, the amounts of labile and mod-labile P fractions were not modified by cover crops related to fallow. When inorganic P fertilizers were applied, the amount of labile and mod-labile P pools under fallow were higher than under cover crops in 5-10 cm depth. Black oat and common vetch cycled more labile P under SSP and RP, respectively. Common vetch and ryegrass resulted in the highest accumulation of organic P on the surface under SSP and RP, respectively. Black oat was capable to change P extracted by 1.0 M HCl to more labile forms. Fodder radish showed the highest P uptake in comparison with other cover crops. The higher P balance efficiency of the system was achieved under SSP in comparison with RP application but it seems that cover crops are more effective at improving the efficiency under RP compared to SSP.

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Section: Soil and Plant Sampling And Analysesmentioning

confidence: 99%

Cover Cropping May Alter Legacy Phosphorus Dynamics Under Long-Term Fertilizer Addition

Soltangheisi

Teles

Sartor

et al. 2020

Front. Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

“…Phosphorus is highly reactive in the soil -both in alkaline soils (Eriksson et al, 2015) and weathered acid soils (Boitt et al, 2018). When the applications of organic fertilizers are carried out above the exportation by the plants, P accumulation takes place in several fractions (Boitt et al, 2018). Phosphorus accumulations are usually more pronounced in inorganic fractions (He et al, 2008;Boitt et al, 2018) due to part of the organic fertilizer showing Pi (Turner & Leytem, 2004), and also due to the mineralization of part of organic P of the soil (Steffens et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus fractions in soil cultivated with vineyards after 62 years of poultry litter addition

Schmitt

Gatiboni

Heidemann

et al. 2019

Pesq. agropec. bras.

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The objective of this work was to evaluate changes in phosphorus fractions in a Humic Cambisol cultivated with vineyards, after 62 years of additional fertilization with poultry litter. Soil samples were collected from two vineyards (V1 and V2) and a forested area adjacent to them. A total of 1,365 and 910 kg ha-1 P were applied to V1 and V2, respectively, throughout the past 62 years. Samples were collected at 0-10, 10-20, 20-30, and 30-40-cm soil depths for the analysis of soil physicochemical properties. The addition of poultry litter to the soil of the vineyards increased the contents of inorganic P (Pi) in all fractions, except in the residual fraction (residual-P), mainly at the 0-10-cm soil depth, in comparison with the forested area. The addition of poultry litter as fertilizer does not affect the organic P (Po) stock in the Humic Cambisol, it only increases the Pi contents of the soil.

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“…However, techniques to improve the efficiency of PS and reduce its polluting environmental effect still require research efforts, especially to control losses of N through ammonia volatilization in areas conducted under the no-tillage system (Aita et al, 2014;Capoane et al, 2015). In addition, in the absence of soil plowing, nutrients with low mobility accumulate in the soil surface, like P (Boitt et al, 2018). In this case, P can be lost through erosion (Bertol et al, 2017) and cause eutrophication of surface water sources, especially at periods of high rainfall following application of PS (Cherobim et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Incorporation in soil and addition of enzyme inhibitor as a way to increase the efficiency of pig slurry and mineral fertilizer

Erdmann¹,

Cassol²,

Sacomori³

et al. 2019

Revista Brasileira De Ciência Do Solo

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The incorporation of nitrogen (N) fertilizers in the soil and the use of enzyme inhibitors (EI) can improve the efficiency of N fertilization by reducing losses by ammonia volatilization and nitrate leaching. This study aimed to evaluate the efficiency of EI addition and fertilizer incorporation on both grain and dry mass yields of corn as well as on some soil chemical properties, with focus on N availability. A field experiment was carried out for three years in randomized blocks with four replications. The treatments consisted of a 2 × 5 factorial, including two forms of fertilizers application: superficial (SUP) and incorporated (INC), allocated in the plots; and five fertilizations: mineral fertilizer (NPK); NPK + EI; pig slurry (PS); PS+EI; and control (TEST), allocated in the subplots. The soil mineral N content was determined at 30, 60, and 90 days after fertilizer application (DAA) and these times were considered as sub-subplots. All fertilizers increased the dry corn matter and grain yields and the soil availability of N, P, and K, mainly in the upper layer (0.00-0.05 m). However, only the PS promoted higher productivity when incorporated into the soil relative to the soil superficial application. The incorporation of fertilizers increases soil available P but has little effect on soil mineral N. The EI addition to the fertilizers promotes higher soil mineral N contents in the soil until 30 and 60 DAA respectively when superficially applied and soil incorporated, although this does not increase the corn productivity.

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Fate of phosphorus applied to soil in pig slurry under cropping in southern Brazil

Cited by 48 publications

References 62 publications

Cover Cropping May Alter Legacy Phosphorus Dynamics Under Long-Term Fertilizer Addition

Cover Cropping May Alter Legacy Phosphorus Dynamics Under Long-Term Fertilizer Addition

Phosphorus fractions in soil cultivated with vineyards after 62 years of poultry litter addition

Incorporation in soil and addition of enzyme inhibitor as a way to increase the efficiency of pig slurry and mineral fertilizer

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