Soil physical quality of Mollisols quantified by a global index

Ghiberto, Pablo Javier; Imhoff, Silvia; Libardi, Paulo Leonel; Silva, Álvaro Pires da; Tormena, Cássio Antônio; Pilatti, Miguel Angel

doi:10.1590/0103-9016-2013-0414

Cited by 21 publications

(15 citation statements)

References 20 publications

(30 reference statements)

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“…Para confirmar esses resultados, os mesmos foram comparados com os de Ghilberto et al (2015) que avaliaram Chernossolos de 18 locais na Argentina, amostrando 30 horizontes A (n = 30) e 30 horizontes B (n = 30), e identificaram limitações quanto à infiltração do excesso de água e proliferação das raízes na maioria dos casos devido ao baixo volume de macroporos (poros com diâmetro maior do que 0,3 mm foram considerados como macroporos nesse estudo) em função da predominância de frações granulométricas finas (argila ou silte) em detrimento de areia e da presença de poros obstruídos. Isso caracteriza as condições típicas encontradas nesses solos e que são restritivas ao pleno desenvolvimento de culturas de sequeiro.…”

Section: Resultsunclassified

“…Estes resultados foram consequência, provavelmente, da influência da argila, que, ao aumentar, gerou da mesma forma maiores valores de θ CC e θ PMP , atenuando as diferenças entre AD conforme a classe textural de cada área agrícola e sugerindo que, nestas camadas, a classe textural desses solos é mais determinante para a disponibilidade hídrica do que os tipos de cultivo utilizados. Ghilberto et al (2015) sugeriram valores de Pt, θ CC e θ PMP de 0,514; 0,361 e 0,136 m 3 .m -3 a partir de uma curva de retenção de água no solo de referência obtida da seleção de 5 horizontes de Chernossolos de um total de 60 (horizontes A (n=30) e B (n=30)), considerados com melhor qualidade estrutural e baseando-se em um índice de qualidade do solo calculado com valores da avaliação de diversos atributos físicos do solo, conforme Reynolds et al (2009).…”

Section: Classes De Tamanho (Mm)unclassified

“…Os valores de Pt obtidos nesse estudo foram menores do que os encontrados por Ghilberto et al (2015), enquanto que para a θ CC e a θ PMP , em geral, foram maiores. Isso indica restrições quanto a qualidade física devido à pequena proporção de poros ocupados por ar na θ CC e pela retenção de água em elevadas tensões mesmo quando em quantidades relevantes, apesar dos valores de AD poderem ser considerados ideais (0,20 m 3 m -3 < AD) ou adequados (0,15 < AD < 0,20 m 3 m -3 ) (Reynolds et al, 2009).…”

Section: Classes De Tamanho (Mm)unclassified

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Condições físicas de Chernossolos cultivados com soja na bacia hidrográfica do Rio Santa Maria, RS

Ribeiro

Bamberg

Kunde

et al. 2018

Agraria

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RESUMO:A soja está sendo introduzida recentemente em rotação com arroz irrigado em terras baixas do sul do Brasil, promovendo diversos benefícios, porém, condições edafoclimáticas podem limitar o desenvolvimento pleno da cultura, sobretudo as em razão dos atributos físicos do solo e dos períodos de estiagem. Esse estudo objetivou avaliar as condições físicas de Chernossolos da bacia hidrográfica do Rio Santa Maria, RS, localizados em áreas agrícolas com diferentes tipos de cultivo (preparo convencional e plantio direto) sob sistema irrigado por aspersão (pivô central). Foram coletadas amostras de solo com estrutura preservada e não preservada nas camadas 0,0 a 0,1; 0,1 a 0,2 e 0,2 a 0,4 m para a determinação de atributos como densidade do solo (Ds), porosidade total (Pt), microporosidade (Mi), macroporosidade (Ma), estabilidade de agregados em água (AEA), diâmetro médio ponderado de agregados (DMP) e variáveis derivadas da curva de retenção de água no solo (CRAS). Características naturais do solo como o hidromorfismo e a forma como estes são cultivados resultam em condições físicas classificadas como restritivas ao pleno desenvolvimento da soja em terras baixas.Palavras-chave: agregação do solo; água disponível; plantio direto; porosidade; solos hidromórficos Physical conditions of Molisols under soybean cultivation in the Santa Maria River basin, RS, BrazilABSTRACT: The soybean has been recently introduced in rotation with irrigated rice in southern Brazilian lowlands, promoting many benefits; however, the soil and climate conditions can limit its full development, mainly the soil physical characteristics and drought periods. This study aimed to evaluate the physical conditions of Molisols located in agricultural areas with different tillage systems (conventional tillage and no-tillage) under sprinkler irrigation system (central pivot) in the Santa Maria River basin, Rio Grande do Sul State. Undisturbed and disturbed soil samples were collected in the 0 to 0,1; 0,1 to 0,2 and 0,2 to 0,4 m soil layers to determine attributes as bulk density (Ds), total porosity (Pt), microporosity (Mi), macroporosity (Ma), water-stable aggregates (AEA), mean weight diameter of aggregates (DMP) and variables derivate from the soil water retention curve (CRAS). Soil natural characteristics as hydromorphism and the way they were conducted result in physical conditions classified as restrictive to the full development of soybean in lowlands.Condições físicas de Chernossolos cultivados com soja na bacia hidrográfica do Rio Santa Maria, RS Rev. Bras.

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Section: Resultsunclassified

Section: Classes De Tamanho (Mm)unclassified

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Condições físicas de Chernossolos cultivados com soja na bacia hidrográfica do Rio Santa Maria, RS

Ribeiro

Bamberg

Kunde

et al. 2018

Agraria

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“…The % silt and clay in the organic amended fields were between 31.40-40.11% and 34.07-39.1% respectively, which was higher than that of the control while the %sand in the control was 35.76% which was also higher than the organic amended fields. Aydinalp [38] and Ghiberto et al [39] have reported that generally, the particle size distribution of mollisols follows an ascending order of sand, clay, and silt. Thus, usually, the %silt and clay are higher than sand.…”

Section: Soil Particle Size Distribution Under the Different Organic mentioning

confidence: 99%

Soil Physicochemical Properties Variation in Black Soil after the Long-term Application of Different Organic Amendments

Opoku-Kwanowaa

Chen

et al. 2020

AJAAR

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Aims:This research aimed to assess how the physicochemical properties of black soil respond to different organic amendments after 10 years of application. Study Design: The experiment was established in 2010 and followed a randomized block design consisting of 24 plots (5 m × 5 m) 25 m 2 with eight treatments in three replicates. Place and Duration of Study:The study site was located at the Jilin Agricultural University Research Farm, Northeast China (43°48′ N, 125°23′ E; km). Methodology: The treatments for the study included an annual input of chemical fertilizer and organic amendments at the surface of the soil. The treatments were: Control (CK), chicken manure Opoku-Kwanowaa et al.; AJAAR, 12(2): 24-34, 2020; Article no.AJAAR.54606 25 (JM), fodder grass (FG), mushroom (MS), maize straw (MZ), tree leaf (TL), pig manure (PM) and cow manure (CM). Chemical fertilizers were added at the rate of 165 kg of N, 82.5 kg of P and 82.5 kg of K ha_1 per year. Application rates of organic materials were adjusted to similar amounts of organic matter (2000 kgha−1). In June 2019, soil samples were collected from each of the amended fields. In each field, three sampling points were randomly selected. Soil samples were collected from the 0 -20 cm depth using a core sampler then taken to the laboratory for soil physicochemical properties analysis. Results: Comparing the results of the organic treatments with CK, bulk density decreased by 5.6-18.0% while porosity, EC, pH, total N and SOC significantly increased in the organic treatments by 6.0-25.9%, 8.3-25.0%, 0.52-1.7%, 2.7-54.7% and 1.3-18.4% respectively. The textural class of soil under the different treatments did not change however, the distribution of soil particle size varied among the treatments, where high clay and silt content were recorded in the amended fields. Moreover, the application of different organic materials significantly affected the soil aggregate stability and this was attributed to the increase in organic matter content which accelerated important microbial activities in the soil to improve aggregation. At higher suction potentials, higher water contents were recorded in the organic amended fields mainly due to the improved physical properties of the soil. Original Research Article Conclusion:The study results showed that the application of organic amendments greatly improves the physical and chemical properties of black soil. Therefore, using these organic amendments can serve as an effective strategy to enhance soil quality and fertility.

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“…Soil horizons that exceed 6% SOC (OC% >6, w/w) are considered humose to peaty in nature (Jones et al, 2011). Therefore, other physical properties must be also considered for the vast majority of soils to drive S i into the degraded zone (<0.035, Table 1 Ghiberto et al, 2015). Therefore, soil horizons with B d <1 g/cm 3 and an OC% >6 should be removed from the present study and future studies of Irish soils when assessing the SPQ.…”

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confidence: 99%

Application of Dexter’s soil physical quality index: an Irish case study

Fenton

Vero

Schulte

et al. 2017

Irish Journal of Agricultural and Food Research

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Historically, due to a lack of measured soil physical data, the quality of Irish soils was relatively unknown. Herein, we investigate the physical quality of the national representative profiles of Co. Waterford. To do this, the soil physical quality (SPQ) S-Index, as described by Dexter (2004a,b,c) using the S-theory (which seeks the inflection point of a soil water retention curve [SWRC]), is used. This can be determined using simple (S-Indirect) or complex (S-Direct) soil physical data streams. Both are achievable using existing data for the County Waterford profiles, but until now, the suitability of this S-Index for Irish soils has never been tested. Indirect-S provides a generic characterisation of SPQ for a particular soil horizon, using simplified and modelled information (e.g. texture and SWRC derived from pedo-transfer functions), whereas Direct-S provides more complex site-specific information (e.g. texture and SWRC measured in the laboratory), which relates to properties measured for that exact soil horizon. Results showed a significant correlation between S-Indirect (S i ) and S-Direct (S d ). Therefore, the S-Index can be used in Irish soils and presents opportunities for the use of S i at the national scale. Outlier horizons contained >6% organic carbon (OC) and bulk density (B d ) values <1 g/cm 3 and were not suitable for S i estimation. In addition, the S-Index did not perform well on excessively drained soils. Overall correlations of S i with B d and of S i with OC% for the dataset were detected. Future work should extend this approach to the national scale dataset in the Irish Soil Information System.

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Soil physical quality of Mollisols quantified by a global index

Cited by 21 publications

References 20 publications

Condições físicas de Chernossolos cultivados com soja na bacia hidrográfica do Rio Santa Maria, RS

Condições físicas de Chernossolos cultivados com soja na bacia hidrográfica do Rio Santa Maria, RS

Soil Physicochemical Properties Variation in Black Soil after the Long-term Application of Different Organic Amendments

Application of Dexter’s soil physical quality index: an Irish case study

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