Variação Espaço-Temporal Da Temperatura Do Substrato Em Bandejas De Produção De Mudas

Cavalcanti, Sávio Duarte Lopes; Gomes, Nicoly Farias; Pandorfi, Héliton; Almeida, Gledson Luiz Pontes de; Montenegro, Abelardo Antônio de Assunção

doi:10.32404/rean.v6i1.2648

Cited by 5 publications

(3 citation statements)

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“…Variations in the development of seedlings in the same tray may be associated with temperature variations between cells, as presented by Cavalcanti et al (2019), when analysing the spatial variability of seedling trays with geo-statistics techniques. However, when performing statistical analysis of the data, a significant effect was obtained from the number of cells factor in the tray on the different variables analysed.…”

Section: Resultsmentioning

confidence: 99%

“…Cucumber seedlings can present development influenced by the size of the cells, with reflection on growth, mass accumulation, and physiological characteristics such as chlorophyll content (Cavalcanti et al, 2019;Kumi et al, 2020). In this sense, the present study aimed to analyse the development of cucumber seedlings in trays with different sizes.…”

Section: Introductionmentioning

confidence: 99%

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Cucumber seedlings production: tray size impact on development

et al. 2022

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The size of the tray in seedling production has a direct influence on the area of root development and availability of resources, such as water as well as nutrients, with a potential impact on the seedling final quality. The objective of this work was to analyse the impact of the tray size on the development of cucumber seedlings. As such, this study was developed in two experiments: in the first, seedlings produced in trays with 50 and 128 cells were compared, while in the second, trays with 50, 98, and 128 cells were considered. For that, polyethylene trays and commercial substrate were used. The trays were kept in a greenhouse, and evaluations were carried out at 21 days after sowing. Morphological development and SPAD index were analysed. The data were submitted to ANOVA and the means compared by the Tukey test (0.05). Linear correlation was performed between the analysed variables. The best development of cucumber seedlings was obtained by adopting trays with 50 cells. Cucumber seedlings produced in trays with a higher number of cells show reduced development, mass accumulation and lower photosynthetic activity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cucumber seedlings production: tray size impact on development

et al. 2022

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“…Substrate temperature depends on the tube's volume, varying according to time and space, with an important role in physical processes and energy exchanges with the surrounding environment, which interfere in the shoot and root growth and in the absorption of water and nutrients (Cavalcanti et al 2019). Furthermore, the substrate temperature determines evaporation and aeration, as well as the speed of the chemical reactions involved seedling development (Diniz et al 2014, Nascimento et al 2016.…”

Section: Discussionmentioning

confidence: 99%

Seedlings Quality of Bertholletia Excelsa Bonpl. (Lecythidaceae) Produced in Forest Nursery

SCHWARTZ¹,

ROCHA²,

ALMEIDA³

et al. 2022

AgricultForest

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In this study, the quality of Bertholletia excelsa seedlings was evaluated in relation to the transplanted seedling's size. Thirty days after transplanting the seedlings to the forest nursery, the first height measurement was performed. From the 30 th day onwards, evaluations were carried out every 15 days, being nine in total. The Dickson Quality Index (DQI) was evaluated to determine the seedlings quality, where all seedlings had their root pruned. The experimental design, totaling 160 individuals, was completely randomized with four treatments and four replications, including the shoot cut and three seedling sizes with no shoot cut. Shoot cut seedlings presented a DQI of 0.66 ± 0.23, significantly higher than the large seedlings (≤ 17 cm in height) with no shoot cut (F 3,76 = 2.762, p = 0.047). Transplanting had significant effects over the development, growth, and quality of Bertholletia excelsa seedlings during the first 165 days of seedling production. Therefore, shoot pruning resulted in better performance of B. excelsa seedlings to be planted in the field.

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