Soil conservation practices and greenhouse gases emissions in Brazil

Besen, Marcos Renan; Ribeiro, Ricardo Henrique; Monteiro, Alessandra Nardina TrÃ­cia Rigo; Iwasaki, Guilherme Seiki; Piva, Jonatas Thiago

doi:10.17268/sci.agropecu.2018.03.15

Cited by 14 publications

(7 citation statements)

References 12 publications

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“…A manutenção dos resíduos sobre a superfície do solo se apresenta como alternativa para melhoria da estruturação do solo (FARIA et al 2018). O sistema plantio direto é uma alternativa conservacionista para a sustentabilidade econômica e ambiental do agroecossistema (BESEN et al, 2018).…”

Section: Methodsunclassified

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Cowpea subjected to organic fertilization and management of the natural vegetation of the savannah of Roraima

Melo

Silva

Alves

et al. 2021

AGRO@MBIENTE ON-LINE

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Cowpea (Vigna unguiculata (L.) Walp.) is one of the main sources of nutrients for a large part of the population. To increase your income, there is a need for proper management. This study aimed to evaluate yield components of the cowpea cultivar Aracê subjected to two levels of organic fertilization and three management of the natural vegetation of the savannah of Roraima. The experiment was set up in the experimental area of CCA/UFRR, in Boa Vista, Roraima. The experimental design was a randomized block design in a 3×2 factorial scheme, with four replications. The first factor consisted of the management of the natural vegetation: glyphosate application and cutting or not of the natural vegetation. The second factor consisted of the application or not of cattle manure. Yield components were plant height, number of trifoliate leaves, percentage of normal pods, pod length, number of grains per pod, 100-grain weight, sample grain index, total grain index, and final stand. Organic fertilization with 2 L m-2 of manure increased cowpea production. The management with vegetation cutting in areas with organic fertilization increased the final stand of cowpea plants. The desiccation of natural vegetation with glyphosate was the management that had the highest cowpea production.

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Section: Methodsunclassified

“…The maintenance of residues on the soil surface is an alternative to improve soil structure (FARIA et al, 2018). The no-tillage system is a conservationist alternative for the economic and environmental sustainability of the agroecosystem (BESEN et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Cowpea subjected to organic fertilization and management of the natural vegetation of the savannah of Roraima

Melo

Silva

Alves

et al. 2021

AGRO@MBIENTE ON-LINE

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“…Estima-se que, no Brasil, as maiores emissões de N2O (84,2%) e de CH4 (74,4%) sejam resultantes do setor agropecuário e cerca de 40,2% das emissões CO2 são oriundas do uso e mudança do uso da terra e florestas (BRASIL, 2016;BESEN, et al, 2018). Além disso, o uso inadequado do solo nas atividades de agricultura e pecuária pode acarretar o desencadeamento do processo de desertificação, considerado também como contribuinte das mudanças climáticas, pois o solo deixa de exercer a função de sequestro e armazenamento de Carbono.…”

Section: Solo Degradação Ambiental E Práticas Conservacionistasunclassified

Solo na escola: atividade prática com um simulador de erosão

2023

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A abordagem da temática solo evidencia a sua importância para a vida e a necessidade de sua conservação. O presente artigo é resultado das reflexões desenvolvidas em sala de aula, na disciplina de Geografia, com a participação dos estudantes do Ensino Fundamental II no contexto do Projeto Solo na Escola do Departamento de Ciências Geográficas da Universidade Federal de Pernambuco – UFPE. O estudo teve como público-alvo estudantes do 6º ano de uma escola pública. A proposta pautou-se numa ação pedagógica com o objetivo de discutir a importância da conservação do meio ambiente dentro de uma cultura de sustentabilidade, trabalhando-se com a temática da erosão do solo. Por meio das reflexões realizadas na disciplina de Geografia, buscou-se refletir sobre as concepções e aprendizados dos estudantes sobre sustentabilidade e meio ambiente. A metodologia efetivou-se através da preparação de um material didático denominado simulador de erosão, que foi utilizado para a realização de uma atividade prática em sala de aula, com a temática da Erosão do solo. Essa intervenção pedagógica contribuiu para a mudança do olhar dos estudantes em relação aos espaços estudados e, assim, eles puderam enxergar novas perspectivas e possibilidades para a conservação do solo, além de ressignificar o processo de ensino-aprendizagem.

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“…The implementation of conservation production systems, such as well-managed pastures and the no-tillage system, can maintain or even increase soil carbon stocks (Salton et al, 2008;Rosset et al, 2019;Falcão et al, 2020), maintaining productive capacity and mitigating the emission of C dioxide (CO 2 ) into the atmosphere (Borges et al, 2015;Besen et al, 2018). In conventional soil tillage systems, the yearly plowing hinders the formation of stable soil aggregates, with consequent damage to the storage of C (Salton et al, 2008), as reported in studies analyzing soil quality in systems with sugarcane cultivation (Bordonal et al, 2018;Gomes et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Stock and indices of carbon management under different soil use systems

Morais

Silva

Rosset

et al. 2021

Rev. Bras. Ciênc. Ambient. (Online)

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The aim of this study was to evaluate the stock of total organic carbon (TOC) and to perform the physical-granulometric fractionation of soil organic matter (SOM) in different management systems (MS). Three MS and one reference area of Native Forest (NF) were studied, and the three systems were sugarcane (SC), permanent pasture (PP) and no-tillage system (NTS). Soil samples were collected in the 0–0.05, 0.05–0.10, 0.10–0.20-m layers. Soil density (Sd), TOC, stratification index (SI), carbon stock (StockC), variation in StockC (∆StockC), carbon content of particulate organic matter (C-POM) and mineral organic matter (C-MOM), carbon stock index (CSI), lability (L), lability index (LI), and carbon management index (CMI) were determined. The MS presented higher Sd than the NF area. The NF area had higher TOC contents in the first layers, reaching 25.40 g kg-1 in the 0–0.05-m layer, with the PP area having higher values than the NF in the 0.10–0.20-m layer. The NF area showed the highest levels of C-POM (15.25 g kg-1) and C-MOM (10.15 g kg-1) in the first layer. In the 0.10–0.20-m layer, the PP and NTS systems were superior to the others. Regarding the C-MOM content, SC and PP showed higher levels in the 0.10–0.20-m layer. The highest CMI values were observed in the NTS and PP areas in the 0.10–0.20-m layer. The MS increased the Sd and reduced the TOC levels. The different MS modified the POM fraction, and the MOM fraction was most impacted by the SC area. The lability of the SOM was altered by the MS in the most superficial layers.

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Soil conservation practices and greenhouse gases emissions in Brazil

Cited by 14 publications

References 12 publications

Cowpea subjected to organic fertilization and management of the natural vegetation of the savannah of Roraima

Cowpea subjected to organic fertilization and management of the natural vegetation of the savannah of Roraima

Solo na escola: atividade prática com um simulador de erosão

Stock and indices of carbon management under different soil use systems

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