Phosphorus Transport Into Subsurface Drains by Macropores After Manure Applications: Implications for Best Manure Management Practices

Geohring, Larry D.; McHugh, Oloro V.; Walter, M. Todd; Steenhuis, Tammo S.; Akhtar, M. A.; Walter, Michael

doi:10.1097/00010694-200112000-00004

Cited by 116 publications

(112 citation statements)

References 22 publications

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“…Observa-se que, mesmo com teores muito altos de P nas camadas superficiais, pois os valores ficaram acima de 18 mg dm -3 de P Mehlich-1 (CQFSRS/SC, 2004), não houve significativa migração do nutriente para camadas inferiores do perfil. No entanto, esperava-se que a presença de grande número de bioporos, observados na área experimental, quando da amostragem do solo, pudesse auxiliar na movimentação de P em profundidade, visto que bioporos representam o principal mecanismo de movimentação de P no solo (Geohring et al, 2001;Motta, 2002).…”

Section: Resultsunclassified

Esterco de gado leiteiro associado à adubação mineral e sua influência na fertilidade de um latossolo sob plantio direto

Silva¹,

Motta

Pauletti

et al. 2010

Rev. Bras. Ciênc. Solo

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RESUMOA produção de gado de leiteiro no sul do Brasil ocorre em grande parte em sistema de semi ou completo confinamento dos animais, o que gera uma produção significativa de resíduos. Os resíduos gerados vêm sendo utilizados como única fonte de nutrientes ou associados a fontes minerais na produção de grãos e silagem, mas sua influência nas características de solo não tem sido bem caracterizada. Este trabalho foi realizado com o objetivo de avaliar a influência de doses de adubação com esterco líquido de gado leiteiro, associadas com adubação mineral, sobre os níveis de P, K, C e condutividade elétrica (CE) de um Latossolo Bruno, em sistema plantio direto e rotação de culturas de inverno e verão (sorgo/aveia-preta/ milho/azevém/milho/azevém), para produção de silagem, nas camadas de 0-5, 5-10, 10-30, 30-50 e 50-80 cm de profundidade. Os tratamentos foram distribuídos em três blocos casualizados, divididos em 12 parcelas cada bloco, em arranjo fatorial 3 x 4, sendo três níveis de adubação mineral (0, 50 e 100 % da dose recomendada para as culturas) e quatro níveis de adubação orgânica (0, 30, 60 e 90 m 3 ha -1 ano -1 ). A adubação mineral proporcionou maiores valores de P disponível (Mehlich-1 e resina) até a profundidade de 10 cm, dada a adição em profundidade pela plantadeira, enquanto, com esterco aplicado em superfície, os maiores valores

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Section: Resultsunclassified

Esterco de gado leiteiro associado à adubação mineral e sua influência na fertilidade de um latossolo sob plantio direto

Silva¹,

Motta

Pauletti

et al. 2010

Rev. Bras. Ciênc. Solo

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“…They attributed the elevated P concentrations in broadcast and subsurface litter application treatments to litter P translocation along macropores. Disking of soils disturbs the continuity of soil macropores and has been shown to significantly curtail P translocation from applied sources in a variety of soils (Geohring et al 2001;Kleinman et al 2009). This mechanism should apply to Zn as well, and it is surprising that no significant differences were observed in leachate Zn concentrations.…”

Section: Figurementioning

confidence: 99%

Transport of dissolved trace elements in surface runoff and leachate from a Coastal Plain soil after poultry litter application

Kibet

Allen

Church³

et al. 2013

Journal of Soil and Water Conservation

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Abstract:The application of poultry (Gallus gallus domesticus) litter to agricultural soils may exacerbate losses of trace elements in runoff water, an emerging concern to water quality. We evaluated trace elements (arsenic [As], mercury [Hg], selenium [Se], and zinc [Zn]) in surface runoff and leachate from an agricultural soil with and without poultry litter application. Litter from a commercial operation was applied by three methods-broadcast application, subsurface placement, and broadcast application followed by disking-to no-till soils with a history of receiving litter. Soil monolith lysimeters (61 by 61 by 61 cm)(24 by 24 by 24 in) were extracted from each of the treatments and subjected to rainfall simulation (1 hour, 61 mm h -1 [2.4 in hr ) of As and Zn in runoff during the first event relative to other application methods. Notably, incorporating litter, either by disking after broadcasting or by subsurface placement, lowered As and Zn in runoff to near background levels by the second event, and there were no significant differences in As and Zn between any of the treatments. While Hg and Se were detected in runoff, they likely derived from edaphic sources as they were not detected in the litter nor did they differ significantly between treatments. Results point to poultry litter as a temporary source of some trace elements to runoff. This source can be readily controlled by adjusting application method.

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“…In particular, soils exhibiting preferential flow through macropores can quickly transport a significant amount of P to deeper soils Stamm et al, 1998;Gupta et al, 1999;Akhtar et al, 2003) and to subsurface drains (Hooda et al, 1999;Geohring et al, 2001). Baseflow chemistry has been shown to vary temporally and spatially with changes in land use, representing an integrated signal of climate, geology, and historical land use (Wayland et al, 2003).…”

Section: Component 2 Baseflowmentioning

confidence: 99%

Distributed hydrological modeling of total dissolved phosphorus transport in an agricultural landscape, part II: dissolved phosphorus transport

Hively

Gerard-Marchant

Steenhuis

2006

Hydrol. Earth Syst. Sci.

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Abstract. Reducing non-point source phosphorus (P) loss to drinking water reservoirs is a main concern for New York City watershed planners, and modeling of P transport can assist in the evaluation of agricultural effects on nutrient dynamics. A spatially distributed model of total dissolved phosphorus (TDP) loading was developed using raster maps covering a 164-ha dairy farm watershed. Transport of TDP was calculated separately for baseflow and for surface runoff from manure-covered and non-manure-covered areas. Soil test P, simulated rainfall application, and land use were used to predict concentrations of TDP in overland flow from non-manure covered areas. Concentrations in runoff for manure-covered areas were computed from predicted cumulative flow and elapsed time since manure application, using field-specific manure spreading data. Baseflow TDP was calibrated from observed concentrations using a temperaturedependent coefficient. An additional component estimated loading associated with manure deposition on impervious areas, such as barnyards and roadways. Daily baseflow and runoff volumes were predicted for each 10-m cell using the Soil Moisture Distribution and Routing Model (SMDR). For each cell, daily TDP loads were calculated as the product of predicted runoff and estimated TDP concentrations. Predicted loads agreed well with loads observed at the watershed outlet when hydrology was modeled accurately (R 2 79% winter, 87% summer). Lack of fit in early spring was attributed to difficulty in predicting snowmelt. Overall, runoff from non-manured areas appeared to be the dominant TDP loading source factor.

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Phosphorus Transport Into Subsurface Drains by Macropores After Manure Applications: Implications for Best Manure Management Practices

Cited by 116 publications

References 22 publications

Esterco de gado leiteiro associado à adubação mineral e sua influência na fertilidade de um latossolo sob plantio direto

Esterco de gado leiteiro associado à adubação mineral e sua influência na fertilidade de um latossolo sob plantio direto

Transport of dissolved trace elements in surface runoff and leachate from a Coastal Plain soil after poultry litter application

Distributed hydrological modeling of total dissolved phosphorus transport in an agricultural landscape, part II: dissolved phosphorus transport

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