Development of Paspalum accession plugs for turfgrass establishment

Silva, Stella Áurea Cristiane Gomes da; Filho, João Carlos Cezar de Albuquerque; Silva, Simone Santos Lira; Castro, A. C. R. de; Loges, Vivian

doi:10.1590/2447-536x.v26i3.2163

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…One of the most commonly used and studied crop health indicators is the Normalized Difference Vegetation Index -NDVI (Rouse et al, 1973). Another index used is the Soil-Adjusted Vegetation Index -SAVI, which is an NDVI correction, aiming to minimize the soil effect (Huete, 1988;Silva et al, 2020;Bezerra et al, 2022;Martins et al, 2022;Silva et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of thermal and optical properties measurements of paspalum in modular green roof in a tropical environment

Ferreira

Lopes²,

Silva³

et al. 2023

Rev. Bras. Geog. Fis.

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Artigo recebido em 01/10/2022 e aceito em 06/02/2023 R E S U M O O objetivo desta pesquisa foi avaliar a utilização de medições de propriedades térmicas e ópticas na caracterização do Gênero Paspalum para utilização em telhados verdes num ambiente tropical. O experimento foi conduzida na Universidade Federal Rural de Pernambuco -UFRPE de Maio a Junho de 2019. Foi avaliado o número de dezesseis acessos de Paspalum com hábitos de crescimento vertical ou prostrado. Em condições simuladas de um telhado verde, foram avaliadas: Índice de Vegetação Ajustada ao Solo (SAVI); temperatura das folhas (L) e do dossel (C) por termometria (TM); e por termografia (TG). O coeficiente de determinação (R 2 ) entre SAVI e a área de cobertura dos acessos foi de 0,84, e com matéria verde (R 2 = 0,73) e matéria seca (R 2 = 0,56). Não foi observada diferença significativa entre os acessos de Paspalum para a medição da temperatura da folha por TM e TG, e para o dossel TM. No entanto, foi observada uma diferença significativa entre a TG do dossel dos acessos de Paspalum, com temperaturas do dossel mais baixas nos acessos com hábito de crescimento vertical do que nos acessos com hábito prostado. A relação entre as técnicas mostrou valores elevados de coeficiente de determinação para TML com TGL (R 2 = 0,85) e TMC com TGC (R 2 = 0,91). Conclui-se que, o SAVI pode ser utilizado para estimar capacidade de área de cobertura vegetal dos acessos. As temperaturas das folhas e das copas podem ser usadas como indicação de déficit hídrico nos acessos de Paspalum, utilizando tanto o termómetro de infravermelhos (mais acessível) como a câmara termográfica. A termografia do dossel também pode ser utilizada para avaliar o desempenho térmico dos telhados verdes. As imagens termográficas indicaram que os acessos de Paspalum de hábitos de crescimento verticais podem proporcionar um melhor conforto térmico. Palavras-chave: Infravermelho; termografia; termometria; SAVI; fenotipagem; melhoramento de plantas. Evaluation of thermal and optical properties measurements of paspalum in modular green roof in a tropical environment A B S T R A C TThe objective was to evaluate the use of thermal and optical properties measurements in the characterization of the genus Paspalum for use on green roofs in a tropical environment. The experiment was conducted at the Universidade Federal Rural de Pernambuco -UFRPE from May to June 2019. The number of sixteen Paspalum accessions with prostrate and upright growth habits was evaluated. In a simulated modular green roof were evaluated: Soil-Adjusted Vegetation Index (SAVI); leaf (L) and canopy (C) temperature by thermometry (TM); and by thermography (TG). The determination coefficient (R 2 ) between SAVI and the coverage area are of 0.84, with green matter (R 2 = 0.73) and dry matter (R 2 = 0.56). No significant difference was observed between the accessions for leaf temperature measure by TM and TG, and for canopy TM. Nevertheless, significant difference to canopy TG were observed, with lower canopy temperatures in accessions w...

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Section: Introductionmentioning

confidence: 99%

Evaluation of thermal and optical properties measurements of paspalum in modular green roof in a tropical environment

Ferreira

Lopes²,

Silva³

et al. 2023

Rev. Bras. Geog. Fis.

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Assessment of ornamental grass accessions under varying salinity levels

Costa,

Castro,

Taniguchi

et al. 2024

Ornam. Hortic.

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Lawns play a key role in enhancing public spaces, preventing soil erosion, and acting as barriers against dust and sludge. In Brazil, Paspalum notatum is widely cultivated for its adaptability to the country’s ecosystems and the availability of native ecotypes. However, soil salinization, a growing ecological concern, can limit lawn growth due to sodium and chloride ion toxicity. This study aimed to identify the most tolerant among five genotypes (Aruaí and Tiriba cultivars, BRA 010006 and BRA 019178 accessions and the commercial species Axonopus fissifolius) subjected to salinity levels (0.5, 1.5, 3.0, 4.5, and 6.0 dS m-1). Analyzed variables included Na and Cl contents in plants, growth parameters (leaf and root dry mass and soil coverage), and morphological symptoms. No significant changes in leaf color or damage compromising aesthetics or functionality at salinity levels from 0.5 to 1.5 dS m-1, with only occasional yellowing or minor scorch. Higher salinity led to leaf burn and yellowing, particularly in accession BRA 010006 and the control. Sodium and chloride contents, especially sodium, was higher in roots than leaves. Accession BRA 019178, followed by cultivars Aruaí and Tiriba, demonstrated moderate tolerance, maintaining satisfactory soil coverage and dry mass across the tested salinity levels. These findings highlight the importance of selecting native turfgrasses with enhanced salt tolerance for landscaping applications in saline-prone areas.

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Development of Paspalum accession plugs for turfgrass establishment

Cited by 2 publications

References 13 publications

Evaluation of thermal and optical properties measurements of paspalum in modular green roof in a tropical environment

Evaluation of thermal and optical properties measurements of paspalum in modular green roof in a tropical environment

Assessment of ornamental grass accessions under varying salinity levels

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