Changes in Soil Phosphorus from Manure Application

Griffin, Timothy S.; Honeycutt, C. Wayne; He, Zhongqi

doi:10.2136/sssaj2003.0645

Cited by 58 publications

(70 citation statements)

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“…Deve-se considerar que a maior parte do P contido no esterco está em formas inorgânicas (P-resina) (Cassol et al, 2001). A contaminação dos lençóis freáticos com P é um tema atual em vários países que utilizam este insumo, uma vez que a dose de esterco a ser aplicada baseia-se na necessidade de N das culturas, o que pode propiciar a adição excessiva de P ao solo (Griffin et al, 2003;Ajiboye et al, 2004;Djodjic et al, 2004).…”

Section: Resultsunclassified

Acumulação de nutrientes em solos arenosos adubados com esterco bovino

Galvão

Salcedo

Oliveira

2008

Pesq. agropec. bras.

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Resumo -Os objetivos deste trabalho foram quantificar as concentrações de carbono e nutrientes em solos de áreas adubadas e não adubadas com esterco; quantificar as concentrações de nutrientes em amostras de esterco bovino utilizado na região e calcular o acúmulo de nutrientes resultantes dessa adubação e o potencial de perdas por lixiviação. Foram amostradas 18 áreas agrícolas, com adição anual de esterco por pelo menos dois anos e, como controle, quatro áreas sob pastagem não adubadas, coletando-se amostras de solo das camadas de 0-20, 20-40 e 40-60 cm, que foram analisadas quanto à granulometria, densidade do solo, pH, C, N e P totais, bases trocáveis, P extraível por água e por Mehlich-1. Amostras de esterco utilizadas em nove áreas também foram analisadas. A aplicação de esterco resultou em acumulações médias ao redor de 20 Mg ha -1 de C, 2 Mg ha -1 de N total e Ca, e de 0,5 a 1 Mg ha -1 de P total, K e Mg (0-60 cm). Acumulações de P solúvel em água e bases trocáveis na camada de 40-60 cm, em relação às testemunhas, indicam grande potencial de perda desses nutrientes.Termos para indexação: agricultura familiar, adubação orgânica, lixiviação de fósforo. Nutrient build up in sandy soils receiving manure additionsAbstract -The objective of this work was to quantify changes on carbon and nutrient contents in soils under continuous manure additions. Eighteen cropped fields that had received annual additions of manure for at least two years and four fields under pasture with no history of manure addition were sampled to assess if this practice results in the accumulation or losses of added nutrients. Soils samples from the 0-20, 20-40 and 40-60 cm layers were taken from each field, and analyzed with regard to their physical (particle size and soil density) and chemical (pH, total C, N and P, extractable P by Mehlich-1 and water, and exchangeable cations) properties. Manure samples used in nine fields were also analyzed for chemical composition. Manure additions resulted in a build up of nutrient stocks near to 20 Mg ha -1 of C, 2 Mg ha -1 of N and Ca, and 0.5 to 1 Mg ha -1 of P, K and Mg (0-60 cm). Water-soluble P concentrations of 7 mg kg -1 in the 40-60 cm layer indicated losses of this nutrient, the less mobile in soils. Accumulation of exchangeable cations in the 0-60 cm layer, in comparison with control areas, indicates an even greater potential for losses of these nutrients.

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Section: Resultsunclassified

Acumulação de nutrientes em solos arenosos adubados com esterco bovino

Galvão

Salcedo

Oliveira

2008

Pesq. agropec. bras.

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“…While some studies have found that livestock manures were equivalent to inorganic fertilizer in P availability [1][2][3][4], others [5][6][7][8] have reported results that indicate that manure P was generally less available than inorganic fertilizer P. Laboski and Lamb [9] found that availability of soil P from injected swine manure was greater than that from fertilizer P for incubation periods of 1 to 9 months, with the difference between the two P sources increasing over time.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Blake et al [15] suggested that manure P can be either less available or more available than superphosphate P, depending on climate, soil, and availability of other plant nutrients and advised careful consideration of environmental conditions when transferring conclusions about soil P availability from one environment to another. Others [6,16] identified the effect of degree of soil P-saturation on release of soluble P where soils with higher initial STP and thus a greater degree of P saturation maintained a higher proportion of added P in available form.…”

Section: Introductionmentioning

confidence: 99%

“…The type of the manure, itself, can have a bearing on the availability of its P [6,14,17,18], with manure Ca content identified as an important determinant of manure P availability [17,18]. The question of fertilizer equivalence of manure P sources is determined more definitively by crop responses in field trials using manure; however, such research requires large expenditures of time and labor.…”

Section: Introductionmentioning

confidence: 99%

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Soil Test Phosphorus Recovery from Livestock Manures Compared with Inorganic Fertilizer in Soil Incubations

Miller

Astatkie

Madani

2010

Applied and Environmental Soil Science

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This paper compared dairy and hen manure P recovery relative to fertilizer P recovery for two Nova Scotia soils with different antecedent soil test P (STP), incubated for 5, 15, 30, 60, and 110 days. Fertilizer equivalence of manure P was expressed as P recovery ratio in percentage points (%PRR). Repeated measures analysis with soil pH covariate revealed: (1) manure %PRR averaged 72% (low-STP soil) and 80% (medium-STP soil), (2) there were no significant differences in %PRR between dairy and hen manure, and (3) manure %PRR decreased with incubation time for the low-STP soil but not for the medium-STP soil. The soil pH covariate was significant for both low-and medium-STP soils, and the relationship with %PRR was positive for low-but not for the medium-STP soil.

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“…They found that application of BL to soils with higher initial STP levels did cause a greater increase in soil P than when BL was applied to soils with lower STP, although the relationship was quadratic with the slope of the curve becoming less steep as initial soil P levels increased. Griffin et al (2003) investigated the effects of initial STP level on changes in extractable P with manure additions. In this study, the addition of BL to soils with varying initial STP levels did not necessarily produce greater increases in soil-extractable P from soils with higher initial STP levels.…”

Section: Introductionmentioning

confidence: 99%