Cultivo Protegido

Faria, Max José de Araújo; Hora, Rerison Catarino da

doi:10.7476/9786586383010.0016

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…In this case, aspects of safety and recommendations imposed by the specific standards for this type of structure are often disregarded. When built based on experience and empirical knowledge, protected cultivation facilities can result in oversized structures and costly constructions (Faria Junior and Hora, 2018). Greenhouses built based on empirical knowledge may not withstand loads and culminate in their mechanical collapse (Ren et al, 2019).…”

Section: General Aspects Related To the Design Of Greenhousesmentioning

confidence: 99%

“…Plastic film coverings meet the needs of solar radiation, and this material has brought an innovative aspect to greenhouses that can be easily designed as arch-shaped (Scarascia-Mugnozza et al, 2012). Following the global trend, in Brazil, most greenhouses are coated with plastic film (low-density polyethylene -LDPE) and the growth of this sector is attributed to incentives, such as the Plasticulture Subsidy Program led by the government of São Paulo State (Faria Junior and Hora, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Advances in methodologies to assess wind actions in plastic-covered greenhouses

Soriano,

Shiguemoto,

Vieira Neto

2024

Sci. agric. (Piracicaba, Braz.)

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The technology provided by greenhouses is essential for protecting crops sensitive to bioclimatic adversities and for improving agricultural production indexes. However, the need to know the exact interaction between the flexible coating and the structure under wind action has motivated new studies. The objective was to perform an in-depth review of the scientific and technological advances regarding methodologies to obtain parameters related to wind actions that are essential for the structural safety of greenhouses. This study showed the relevance of experimental methods; however, the limitations of the study are diverse, as field experiments require the construction and modifications of a prototype, which demand time and financial resources. Experiments in wind tunnels with models on a reduced scale have contributed significantly, as it allows to control the wind flow; however, in plastic-covered greenhouses, discrepancies occur due to the impossibility to represent the aeroelasticity of the construction. Modeling via computational fluid dynamics (CFD) has proven to be a solution for extrapolating limitations in experimental methods by facilitating changes in the construction model and wind flow. In addition to pure turbulence models, studies on hybrid turbulence models (Scale-Resolving Simulation) must be deepened to obtain greater accuracy of pressure coefficients. The complexity of the subject and the need for new contributions to plastic-covered greenhouse projects are a reality, which outlines a promising horizon for research development in the rural construction sector.

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Section: General Aspects Related To the Design Of Greenhousesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advances in methodologies to assess wind actions in plastic-covered greenhouses

Soriano,

Shiguemoto,

Vieira Neto

2024

Sci. agric. (Piracicaba, Braz.)

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Produção em sistema de cultivo em ambiente protegido: estudo dos canais de comercialização dos produtores do município de Buri – SP

Silva¹,

Oliveira²,

Entelmann³

et al. 2023

R. G. Secr.

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Este estudo objetivou mapear os canais de comercialização utilizados por produtores cuja produção é realizada em sistema de cultivo em ambiente protegido no município de Buri – SP. De cunho qualitativo e caráter descritivo e exploratório, a pesquisa foi realizada em duas etapas. Na primeira etapa, procedeu-se pesquisa bibliográfica para subsidiar o referencial teórico e a discussão dos dados. Na segunda, realizou-se a pesquisa de campo por meio de entrevistas com roteiro semiestruturado com 7 (sete) produtores elegíveis aos critérios estabelecidos. De acordo com os níveis de canais de comercialização propostos por Kotler e Keller (2019), à exceção do produtor 5 (CLM), que atua somente no nível 3 de canal de comercialização, todos os demais produtores atuam nos níveis 1 e 2. O produtor 1 (SaCS), por sua vez, atua nos três níveis de canais de comercialização. De modo geral, todas as vendas realizadas pelos produtores pesquisados são realizadas de forma indireta, já que o escoamento da produção passa ao menos por um intermediário até chegar ao comprador final.

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Cultivo Protegido

Cited by 2 publications

References 34 publications

Advances in methodologies to assess wind actions in plastic-covered greenhouses

Advances in methodologies to assess wind actions in plastic-covered greenhouses

Produção em sistema de cultivo em ambiente protegido: estudo dos canais de comercialização dos produtores do município de Buri – SP

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