Soil quality assessment of wheat-maize cropping system with different productivities in China: Establishing a minimum data set

Li, Peng; Shi, Kun; Wang, Yuanyuan; Kong, Dening; Liu, Ting; Jiao, Jiaguo; Liu, Manqiang; Li, Huixin; Hu, Feng

doi:10.1016/j.still.2019.02.019

Cited by 85 publications

(44 citation statements)

References 44 publications

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“…Esses sistemas são os com melhores práticas de manejo e de conservação do solo; consequentemente, adicionam maior quantidade de MOS. O PC e o SE foram enquadrados no mesmo grupo, o que revela os efeitos negativos das formas de manejo utilizadas, evidenciando também a transição de áreas com PC onde ocorre o revolvimento do solo em áreas que preconizam o não revolvimento (PD) (LI et al, 2019;NIJMEIJER et al, 2019;CECAGNO;BAYER, 2019).…”

Section: Resultsunclassified

“…O revolvimento do solo acaba por expor a MOS a fatores de decomposição que, somados à baixa deposição de resíduos vegetais, geram Os menores EstC foram evidenciados nas parcelas de PC e SE, com 19,20 e 9,26 Mg ha -1 . Esses resultados se devem pela ausência de práticas de conservação do O acúmulo de C dessas áreas favorece a melhoria dos atributos edáficos, principalmente quanto à fertilidade, pela ciclagem dos nutrientes(CHU et al, 2019; CORBEELS et al, 2019), da qualidade biológica, que envolve aumento de atividade dos microrganismos(LI et al, 2019), aumento de espaços porosos, que permite maior infiltração de água no solo(PATRA et al, 2019), diminuição da densidade e da resistência do solo à penetração(NUNES et al, 2019) e melhoria da estruturação do solo(MELO et al, 2019). SE: solo exposto; PC: sistema de preparo convencional; PD: sistema plantio direto; PP: pastagem permanente; CA: cana-de-açúcar.…”

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Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Falcão

Monteiro

Ozório

et al. 2020

Rev. Bras. Ciênc. Ambient. (Online)

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O objetivo do trabalho foi avaliar o estoque de carbono e a agregação dosolo em diferentes sistemas de manejo no município de Aquidauana (MS).Foram coletadas amostras de solo na camada 0,0–0,1 m em seis áreas: soloexposto (SE), sistema de preparo convencional (PC), sistema plantio direto(PD), cana-de-açúcar (CA), pastagem permanente (PP) e mata nativa (MN).Das amostras, determinou-se: carbono orgânico total (COT), densidadedo solo (Ds), sendo calculados o estoque de carbono (EstC) e a variaçãono estoque de carbono (ΔEstC), além da análise de estabilidade de agregados.Obteve-se: diâmetro médio ponderado (DMP), diâmetro médio geométrico(DMG) e porcentagem de agregados retidos nas peneiras. Os resultados foramanalisados em delineamento inteiramente casualizado (DIC) e análise canônica.Os maiores valores de Ds foram observados nos sistemas SE 1,53 Mg m-3,PC 1,46 Mg m-3, PD 1,47 Mg m-3 e CA 1,46 Mg m-3. Os teores de COT das áreasde PP e PD foram superiores ao da MN. O EstC apresentou o mesmo padrãode COT. As áreas de PP e PD exibiram valores de DMP e DMG semelhante aMN. As áreas de PP, PD e MN tiveram mais de 60% dos seus agregados maioresque 2 mm. A análise canônica indicou a formação de três grupos, um com SEe PC, outro apenas com CA e o terceiro composto de PD, PP e MN. O SE e o PCcomprometem o estoque de carbono e a agregação do solo na camada 0–10cm, já a PP e o PD aumentaram o estoque de carbono nessa mesma camada.

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Section: Resultsunclassified

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Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Falcão

Monteiro

Ozório

et al. 2020

Rev. Bras. Ciênc. Ambient. (Online)

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“…Olsen-P was extracted using 0.5 mol·L −1 NaHCO 3 at pH 8.5 (2.5 g soil, 50 mL solution, shaken for 30 min) [ 27 ]. Available K was extracted with ammonium acetate extraction and subsequent flame photometer analysis [ 28 ]. The concentrations of SOC and TN were determined using an elemental analyzer.…”

Section: Methodsmentioning

confidence: 99%

Soil Phosphorus Pools, Bioavailability and Environmental Risk in Response to the Phosphorus Supply in the Red Soil of Southern China

Yan

Yang

Chen

et al. 2020

IJERPH

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Excess phosphorus (P) accumulation in the soil can change the bioavailability of P and increase the leaching risks, but the quantitative evaluation of these responses in acidic red soil is lacking. This study aimed to investigate the composition of soil P fractions under different phosphorus apparent balances (PAB) in acidic red soil and the bioavailability and the leaching change-points of different P fractions. Five phosphorus (P) fertilization rates were applied (0, 16.38, 32.75, 65.50, 131.00 kg P·ha−1) in every sweet corn cultivation from the field experiment, and the treatments were marked as P0, P1, P2, P3, and P4, respectively. The PAB showed negative values in P0 and P1 which were −49.0 and −15.0 kg P·ha–1 in two years, respectively. In contrast, PAB in P2 as well as in P3 and P4 were positive, the content ranging from 40.2 to 424.3 kg P·ha−1 in two years. Per 100 kg ha−1 P accumulate in the soil, the total P increased by 44.36 and 10.41 mg kg−1 in the surface (0–20 cm) and subsurface (20–40 cm) soil, respectively. The content of inorganic P fractions, including solution phosphate (Sol-P), aluminum phosphate (Al-P), iron phosphate (Fe-P), reduction phosphate (Red-P), and calcium phosphate (Ca-P), significantly increased by 0.25, 16.22, 22.08, 2.04, and 5.08 mg kg−1, respectively, in surface soil per 100 kg ha−1 P accumulated in the soil. Path analysis showed that the most important soil P fractions contributing to Olsen-P were Sol-P and Al-P, which can directly affect Olsen-P, and their coefficients were 0.24 and 0.73, respectively. Furthermore, the incubation experiments were conducted in the laboratory to investigate the leaching risk of different P fractions, and they showed Sol-P was a potential source of leaching, and the leaching change-points of Al-P and Fe-P were 74.70 and 78.34 mg·kg–1, respectively. Continuous P that accumulated in soil changed the composition of P fractions, and the bioavailability as well as the leaching risks increased. This is important in optimizing soil P fertilization management in agricultural ecosystems based on the bioavailability and critical levels for leaching of P fractions.

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“…Agricultural cultivation systems managed incorrectly, especially with intense disturbance, such as the conventional tillage (CT) system, provide a reduction in the edaphic quality, with a reduction in carbon contents (Sarker et al, 2018) and stocks (Cstock) (Assunção et al, 2019;Falcão et al, 2020). This reduction in C quality and content in systems with soil disturbance occurs mainly due to the exposure of SOM to the direct action of microorganisms, potentiating C oxidation (Yang et al, 2019;Li et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Soil Carbon Stock in Different Uses in the Southern Cone of Mato Grosso Do Sul

Martins

Troian

Rosset

et al. 2020

Rev. Agric. Neotrop.

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This study aimed to assess the soil density (Sd) and the total organic carbon contents and stocks in different management systems and implementation times in the municipality of Iguatemi, MS, Brazil. A completely randomized design with four replications was applied to four areas: conventional tillage (CT), reformed pasture (RP), and degraded pasture (DP), in addition to a native forest (NF) area with no anthropic action. Disturbed and undisturbed soil samples were collected at depths of 0–0.05, 0.05–0.1, and 0.1–0.2 m. The determination of Sd and total organic carbon content (TOC) allowed calculating the carbon stock (Cstock), the stratification index (SI), and the carbon stock variation (ΔCstock), with subsequent multivariate analysis. The NF area presented the highest TOC contents at all depths compared to the managed areas, with a value of 17.45 g kg−1 at a depth of 0–0.05 m. The RP and NF areas showed similar SI, which was higher in PD, with a value of 2.54. Except for RP, the other managed areas showed a negative ΔCstock in the soil profile relative to the NF area. The RP and NF areas promoted the maintenance of TOC in the soil, while DP and CT compromised the edaphic quality.

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Soil quality assessment of wheat-maize cropping system with different productivities in China: Establishing a minimum data set

Cited by 85 publications

References 44 publications

Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Estoque de carbono e agregação do solo sob diferentes sistemas de uso no cerrado

Soil Phosphorus Pools, Bioavailability and Environmental Risk in Response to the Phosphorus Supply in the Red Soil of Southern China

Soil Carbon Stock in Different Uses in the Southern Cone of Mato Grosso Do Sul

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