Effect of management systems and cover crops on organic matter dynamics of soil under vegetables

Souza, Rodrigo Fernandes de; Figueiredo, Cícero Célio de; Madeira, N. R.; Alcântara, F. A. de

doi:10.1590/s0100-06832014000300024

Cited by 11 publications

(19 citation statements)

References 37 publications

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“…2016 DOI: 10.1590/S0100-204X2016000900050 2013), bem como melhorias dos atributos físicos e químicos Siqueira Neto et al, 2010;Guareschi et al, 2012aGuareschi et al, , 2013Beutler et al, 2015) e biológicos (Leite et al, 2010;Pereira et al, 2013). No entanto, ainda são poucos os estudos que avaliam a dinâmica da matéria orgânica e de suas frações, ou os benefícios destas, em solos sob sistemas plantio direto de hortaliças (SPDH) no cerrado (Souza et al, 2014a(Souza et al, , 2014b.…”

Section: Introductionunclassified

“…De maneira similar, Souza et al (2014a) verificaram que a adoção de SPD no cultivo de repolho reduziu em 90% as taxas de perda de água, em comparação ao plantio convencional. Em outro estudo, Souza et al (2014b) relatam que o SPDH favorece o aumento do C orgânico total (COT) e das frações mais lábeis e oxidáveis da matéria orgânica, principalmente na camada superficial do solo, em comparação ao plantio convencional (SPC); no entanto, segundo os autores, o SPDH somente promoveu o aumento nos teores de humina, na área de SPD com hortaliças. No Estado do Rio de Janeiro, Loss et al (2009Loss et al ( , 2010aLoss et al ( , 2010b, ao comparar um SPD com rotação entre beringela e milho e um SPC com rotação entre milho e feijão, em Argissolo, relataram maiores teores -no SPD -de matéria orgânica leve (MOL), COT, N do solo, C orgânico particulado (COp), C orgânico associado aos minerais (Coam), e maiores valores de frações húmicas e frações oxidáveis da MOS (graus de oxidação F2, F3 e F4).…”

Section: Introductionunclassified

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Estoques e frações da matéria orgânica do solo sob os sistemas plantio direto e convencional de repolho

Melo

Pereira

Perín

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar as frações húmicas, granulométricas e oxidáveis da matéria orgânica do solo, o conteúdo de matéria orgânica leve no solo, e os teores e estoques de C e N em Latossolo Vermelho, manejado pelos sistemas plantio direto e convencional, para o cultivo de repolho. Áreas de pastagem e de cerrado nativo foram utilizadas como controle. As amostras foram coletadas em 2014, às profundidades 0,0-0,05 e 0,05-0,10 m, após um ciclo de cultivo do repolho sob plantio direto e convencional, em área com longo histórico de cultivo convencional de hortaliças. O sistema plantio direto aumenta os teores de matéria orgânica leve, C e N, assim como os estoques de C e os valores de C orgânico particulado, de C orgânico associado a minerais, e de frações húmicas e oxidáveis da matéria orgânica. O sistema plantio direto melhora a qualidade do solo, em comparação ao plantio convencional, além de proporcionar, para a maioria das variáveis analisadas, maiores valores do que os observados em área de pastagem e valores semelhantes aos da área sob cerrado nativo.Termos para indexação: compartimentos da matéria orgânica, dinâmica da matéria orgânica, manejo do solo, matéria orgânica leve, plantio direto de hortaliças. Storage and fractions of soil organic matter under no-tillage and conventional planting systems of cabbageAbstract -The objective of this work was to evaluate the humic, granulometric, and oxidizable fractions of soil organic matter, the light organic matter content in the soil, and C and N contents and storage in an Oxisol under no-tillage and conventional tillage systems for cabbage cultivation. Pasture areas and native cerrado soil were used as a control. The samples were collected in 2014 at the 0.0-0.05 and 0.05-0.10-m soil depths, after one cabbage crop cycle under no-tillage and conventional tillage systems, in an area with a long history of conventional tillage for vegetable crops. The no-tillage system increases the contents of light organic matter, C and N, as well as C storage and the values of particulate organic C, organic C associated with minerals, and the humic and oxidizable fractions of organic matter. The no-tillage system improves soil quality, in comparison with conventional tillage, besides providing, for most of the variables, higher values than those observed in the pasture area and similar values to those of the area under native cerrado.

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Section: Introductionunclassified

Estoques e frações da matéria orgânica do solo sob os sistemas plantio direto e convencional de repolho

Melo

Pereira

Perín

et al. 2016

Pesq. agropec. bras.

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“…The NT potential to improve carbon contents in tropical and subtropical soils have been reported by other studies (Conceição et al, 2013) [9]. In a vegetable production area of the Brazilian Cerrado, Souza et al (2014) [10] also observed that the use of conservation systems improved the quantity and quality of SOM. However, there is little knowledge about the temporal dynamic of SOM contents in vegetables production areas when conservation systems are adopted, an important question to improve the sustainability of the agricultural soils.…”

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confidence: 59%

Effects of Five Years Adoption of No-Tillage Systems for Vegetables Crops in Soil Organic Matter Contents

Lima¹,

Guedes²,

Silva³

et al. 2018

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Vegetables productions systems are done normally with intense soil tillage causing a strong decline of soil quality. Use of conservation systems can be an alternative to recover this quality. In order to evaluate the effects of such systems on soil organic matter, an experiment has been conducted in randomized blocks design and factorial scheme 3 × 2: three soil management systems (no-tillage; reduced tillage and conventional tillage) and two cover crops (maize single; and intercropping maize with gray velvet bean-Stizolobium niveum); and repeated measures over time. Soil samples were collected before the implementation of the experiment and at the end of each crop cycle until the fifth crop cycle. Carbon associated with humic substances is also determined in 0 -5 cm, 5 -10 cm and 10 -30 cm at the end of the last crop cycle. The SOM content was higher in RT (48.34 g·kg ) was statistically equal to RT and CT, during the same period. In 0 -5 cm, carbon contents associated to the humic substances present the same behavior of SOM contents in 0 -10 cm. Probably these results are associated with the capacity of each system to improve superficial contents of SOM stable fractions. It follows that the conservation systems used are alternatives to the cultivation vegetables in order to improve soil organic matter contents.

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“…These differences were not observed for the total SOC levels ( Table 2). As the F1 fraction comprises the C forms that require the lowest degree of oxidation for extraction (Chan et al, 2001;Souza et al, 2014), our results suggest that the cultivation of these two species may enhance the concentrations of the more labile organic C in the soil. This significant difference in organic C also indicates that the F1 fraction can be used as a sensitive indicator of the changes in soil organic matter due to alterations in the management practices.…”

Section: Oxidizable Organic C Fractionsmentioning

confidence: 84%

“…Thus, the partitioning of soil organic matter into the functional compartments with different dynamics represents an important tool to readily detect recent changes in the soil in response to changes in management practices (Sequeira et al, 2011;Blanco-Moure et al, 2013). The labile fractions of soil organic matter such as LF, POC and C fractions extracted using low degrees of oxidation with H 2 SO 4 (Chan et al, 2001), may be more sensitive indicators of the changes caused by modifications in soil management practices (Loss et al, 2013;Souza et al, 2014;Marques et al, 2015), and an analysis of these compartments will deepen the understanding of SOC dynamics (Carter, 2001). …”

Section: Introductionmentioning

confidence: 99%

Changes in Soil Organic Carbon Fractions in Response to Cover Crops in an Orange Orchard

Oliveira

Xavier

2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:The cultivation of cover crops intercropped with fruit trees is an alternative to maintain mulch cover between plant rows and increase soil organic carbon (C) stocks. The objective of this study was to evaluate changes in soil total organic C content and labile organic matter fractions in response to cover crop cultivation in an orange orchard. The experiment was performed in the state of Bahia, in a citrus orchard with cultivar 'Pera' orange (Citrus sinensis) at a spacing of 6 × 4 m. A randomized complete block design with three replications was used. The following species were used as cover crops: Brachiaria (Brachiaria decumbes) -BRAQ, pearl millet (Pennisetum glaucum) -MIL, jack bean (Canavalia ensiformis) -JB, blend (50 % each) of jack bean + millet (JB/MIL), and spontaneous vegetation (SPV). The cover crops were broadcast-seeded between the rows of orange trees and mechanically mowed after flowering. Soil sampling at depths of 0.00-0.10, 0.10-0.20, and 0.20-0.40 m was performed in small soil trenches. The total soil organic C (SOC) content, light fraction (LF), and the particulate organic C (POC), and oxidizable organic C fractions were estimated. Total soil organic C content was not significantly changed by the cover crops, indicating low sensitivity in reacting to recent changes in soil organic matter due to management practices. Grasses enabled a greater accumulation of SOC stocks in 0.00-0.40 m compared to all other treatments. Jack bean cultivation increased LF and the most labile oxidizable organic C fraction (F1) in the soil surface and the deepest layer tested. Cover crop cultivation increased labile C in the 0.00-0.10 m layer, which can enhance soil microbial activity and nutrient absorption by the citrus trees. The fractions LF and F1 may be suitable indicators for monitoring changes in soil organic matter content due to changes in soil management practices.

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Effect of management systems and cover crops on organic matter dynamics of soil under vegetables

Cited by 11 publications

References 37 publications

Estoques e frações da matéria orgânica do solo sob os sistemas plantio direto e convencional de repolho

Estoques e frações da matéria orgânica do solo sob os sistemas plantio direto e convencional de repolho

Effects of Five Years Adoption of No-Tillage Systems for Vegetables Crops in Soil Organic Matter Contents

Changes in Soil Organic Carbon Fractions in Response to Cover Crops in an Orange Orchard

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