Legacy phosphorus and no tillage agriculture in tropical oxisols of the Brazilian savanna

Rodrigues, Marcos; Pavinato, Paulo Sérgio; Withers, Paul J. A.; Teles, Ana Paula Bettoni; Herrera, Wilfrand Ferney Bejarano

doi:10.1016/j.scitotenv.2015.08.118

Cited by 180 publications

(128 citation statements)

References 37 publications

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“…The highest levels of P fractions in the upper layers of the soil occurred because the organic waste and the mineral fertilizer were added to the soil surface without incorporation, since it was a no-tillage system (Rodrigues et al 2016).…”

Section: Resultsmentioning

confidence: 99%

Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition

et al. 2017

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Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. deep bedding and NPK fertilizer for eight years (urea + triple superphosphate + potassium chloride) provided accumulations of P fractions in the soil that were above the necessary for a proper nutrition to plants considering the available P fractions (AER + organic NaHCO 3 + inorganic NaHCO 3 ) in the soil. In addition, they showed that the use of swine deep bedding, followed by pig slurry, means higher levels of available P fractions in the soil. In this sense, the establishment of a dosage of organic waste to meet the nitrogen need of crops is not an environmentally appropriate parameter. It may cause P accumulation in the soil, increased absorption ability of plants and soil support, contributing to environmental contamination.

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Section: Resultsmentioning

confidence: 99%

Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition

et al. 2017

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“…In highly weathered tropical soils, such as Latosols (Oxisols), the nutrient phosphorus (P), beyond its natural deficiency in most cases (Lopes;Guilherme, 2016), have high adsorption by iron and aluminum oxides (Camargo et al, 2015;Rodrigues et al, 2016), making it less available to plants. The phosphate fertilization in the Brazilian Cerrado soils was one of the practices responsible for boosting agriculture in this biome (Lopes;Guilherme, 2016), where currently much of the agricultural and livestock farming in Brazil is concentrated, mainly soybean production.…”

Section: Introductionmentioning

confidence: 99%

Long-term phosphate fertilization, mycorrhizal inoculation and historical land use influence on soybean growth and P uptake

et al. 2016

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Phosphorus is a key-nutrient in the fertility management of highly weathered tropical soils. So, this work was carried out with the objective of evaluating the influence of the interaction between P doses, mycorrhizal inoculation and historical land use on soybean growth and P uptake in five Latosols (Oxisols) with contrasting chemical, physical and mineralogical properties under a continuous long-term phosphate fertilization (more than 15 years). The plants were cultivated in 4.5L-plastic pots containing 4 kg of soil in a completely randomized design, four replications and 2x2x2 factorial scheme with two P doses; and with or without mycorrhizal inoculation; and soils cultivated for long periods and non-cultivated (under native vegetation). There were two cultivations of ten weeks each. Shoot dry mass, P content and accumulation in the shoot dry mass were evaluated after each cultivation period. The cultivation history reduced the response to P application and inoculation. The soybean response to inoculation was greater in cultivated soils and when the lower P dose was applied. The soybean response magnitude to these variables was different among the studied Latosols. The mineralogical and chemical attributes of the Latosols were determinants.Index terms: Mycorrhiza; Latosols (Oxisols); available P; long-term cultivation. RESUMOO P é um nutriente chave no manejo da fertilidade de solos tropicais altamente intemperizados. Este trabalho foi conduzido com o objetivo de avaliar a influência da interação entre doses de P, inoculação micorrízica e histórico de uso do solo no crescimento da soja e absorção de P em cinco Latossolos com atributos físicos, químicos e mineralógicos contrastantes recebendo adubação fosfatada por longo período (> 15 anos). As plantas foram cultivadas em potes plásticos (4,5 L) contendo 4 kg de solo em um delineamento inteiramente casualizado, quatro repetições e esquema fatorial 2x2x2 correspondente a: duas doses de P; com e sem inoculação micorrízica; solos previamente cultivados e não cultivados (sob vegetação nativa). Foram realizados dois cultivos de dez semanas cada. Após cada um dos cultivos, avaliaram-se a massa seca da parte aérea, concentração e acúmulo de P na parte aérea. O cultivo do solo reduziu a resposta à aplicação de P e inoculação. A resposta da soja à inoculação foi maior nos solos cultivados e quando a menor dose de P foi aplicada. A magnitude dessas respostas foi diferente entre os Latossolos estudados, sendo os atributos mineralógicos e químicos dos Latossolos determinantes.Termos para indexação: Micorrizas; Latossolos; P disponível; cultivo do solo.

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“…O motivo do sistema de SPD apresentar maiores valores de fósforo pode estar relacionado ao fato de que neste tipo de manejo é pouco o revolvimento do solo em relação ao sistema de manejo convencional, assim há redução do contato e interação entre os coloide do solo e o íon fosfato, reduzindo a atividade de adsorção do solo (ANGHINONI, 2007). Rodrigues et al, (2016) estudando os níveis de fósforo em sistema de manejo plantio direto e convencional a longo período, observaram resultados semelhantes com os observados nesse estudo, em que os níveis de fósforo foram superiores no sistema SPD em comparação ao SPC. Santos et al, (2017) também verificaram em seus estudos maiores valores de P no sistema plantio direto e atribuíram ao fato de que neste tipo de cultivo há pouco revolvimento do solo em comparação aos demais sistemas.…”

Section: Ph Do Solo E Macronutrientesunclassified

Caracterização Física E Química De Solo Em Sistemas De Manejo Plantio Direto E Convencional

Santana¹,

Lima²,

Komatsu³

et al. 2018

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Legacy phosphorus and no tillage agriculture in tropical oxisols of the Brazilian savanna

Cited by 180 publications

References 37 publications

Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition

Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition

Long-term phosphate fertilization, mycorrhizal inoculation and historical land use influence on soybean growth and P uptake

Caracterização Física E Química De Solo Em Sistemas De Manejo Plantio Direto E Convencional

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