MORPHOLOGICAL, ANATOMICAL AND PHYSIOLOGICAL CHARACTERISTICS OF Acrocarpus fraxinifolius WIGHT &amp; ARN SEEDLINGS ACCORDING TO CONTAINERS AND FERTILIZATION

Dias, Gardênia Proto; Rodrigues, Aline Sueli de Lima; Costa, Andréia Mendes da; Carlos, Leandro; Filho, Sebastião Carvalho Vasconcelos; Batista, Priscila Ferreira

doi:10.1590/01047760201824042589

Cited by 6 publications

(10 citation statements)

References 19 publications

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“…In E. tereticornis seedlings, root restriction reduced biomass without affecting partition, and growth reduction was not well related to lower net leaf photosynthesis (Campany et al, 2017). While in Acrocarpus fraxinifolius Wight & Arn seedlings, stomatal conductance, net assimilation of carbon dioxide, transpiration, and quantum efficiency of photosystem II, depending on the fertilization they received, were reduced under smaller volumes of containers (Dias et al, 2018). In the same sense, Ouma (2007) observed that both the stomatal conductance and the net assimilation of carbon dioxide in M. indica seedlings were higher when produced in larger containers and more frequently irrigated.…”

Section: Effects Of Container Volumementioning

confidence: 87%

“…Adequate supply of water for the seeds, without dormancy, associated with temperature and light are the main factors in the germination process (Taiz et al, 2017). However, the reduction in container volume can promote changes in seedling physiology (Ouma, 2007;Espinoza et al, 2017;Dias et al, 2018).…”

Section: Effects Of Container Volumementioning

confidence: 99%

“…The adequacy of the volume of containers is also a relevant factor impacting the production of seedlings (A. R. Silva et al, 2018a,b;E. C. Nascimento et al, 2020) as the root restriction determined by the smaller volume of container can change the fluorescence and gas exchange (Ouma, 2007;Dias et al, 2018). However, Campany, Medlyn and Duursma (2017) do not relate the lower growth of seedlings under root restriction to the reduction in carbon dioxide assimilation, even though they obtained smaller seedlings.…”

Section: Introductionmentioning

confidence: 99%

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Physiology in Talisia esculenta seedlings under irrigation with saline water on substrate with hydrogel

Bezerra

Nascimento

et al. 2022

Semina: Ciênc. Agrár.

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Salinity interferes in the physiology of seedlings from germination and seedling emergence, so it is necessary to adopt measures to mitigate its effects. The objectives of this research were to evaluate irrigation frequency, saline water, polymer, and container volume in the emergence and physiology of Talisia esculenta (A. St.-Hil.) Radlk. The treatments were obtained from the combination of polymer doses (0.0; 0.2; 0.6; 1.0; and 1.2 g dm-3), electrical conductivities of the irrigation water (0.3; 1, 1; 2.7; 4.3; and 5.0 dS m-1), and irrigation frequencies (daily and alternate), plus two additional treatments to assess the volume of the container. A randomized block design was used. Emergence and leaf indices of chlorophyll, fluorescence, and gas exchange were analyzed 100 days after sowing. The increase in electrical conductivity reduced and delayed seedling emergence. Decreasing irrigation frequency reduced the chlorophyll b index, stomatal conductance, transpiration, net CO2 assimilation, and carboxylation efficiency. The magnitude of the effects of electrical conductivity of water and polymer were associated with the frequency of irrigation. However, both salinity and polymer reduced practically all physiological variables. The reduction in container volume also affected the physiology of the seedlings, with more effects when irrigated on alternate days. The T. esculenta seedlings are considered sensitive to salinity, should be irrigated daily with water with less electrical conductivity than 1.0 dS m-1, as well as higher capacity containers used (0.75 vs 1.30 dm3).

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Section: Effects Of Container Volumementioning

confidence: 87%

Section: Effects Of Container Volumementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physiology in Talisia esculenta seedlings under irrigation with saline water on substrate with hydrogel

Bezerra

Nascimento

et al. 2022

Semina: Ciênc. Agrár.

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“…Among the factors that influence the quality and production costs of seedlings of forest species, the nutritional demands of the species can be highlighted (Dias et al 2018). According to Pagliarini et al (2014), the need for fertilization stems from the fact that the substrate is not always able to provide all the nutrients that plants need for adequate growth.…”

Section: Introductionmentioning

confidence: 99%

Uso de adubos de liberação lenta na produção de mudas de Handroanthus impetiginosus

et al. 2022

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A espécie Handroanthus impetiginosus possui grande interesse econômico devido a qualidade da sua madeira. Visando entender e ampliar os conhecimentos sobre a sua formação de mudas com qualidade da espécie, foi estudado a eficiência e as doses adequadas de dois adubos de liberação lenta na produção de mudas de Handroanthus impetiginosus. O experimento foi conduzido em delineamento em blocos casualizados, em fatorial (2x5). Foram avaliados dois adubos (SRF1 e o SRF2) em cinco doses (0, 3, 6, 9, 12 kg dm-³). Foram mensurados a altura, diâmetro de coleto, H/SD, massa seca da parte aérea, do sistema radicular e total, e o Índice de Qualidade de Dickson. Para cada variável foi calculado a dose máxima de eficiência técnica (MDTE). Realizou-se a análise de variância e a comparação de médias pelo teste Tukey para os dois adubos utilizados e análise de regressão das médias para as doses utilizadas. Todas as análises foram realizadas utilizando o software R. Todas as variáveis apresentaram crescimento quadrático positivo. Os resultados deste estudo indicam que ambos os adubos são adequados para produção de mudas de Handroanthus impetiginosus, nas MDTE de 11,65 kg dm-3 para SRF1 e 9,19 kg dm-3 para SRF2.

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“…Recipient volume also influences on the space occupied inside nursery, labor required to be handled, and transport, which determines the final production cost of seedling production (Stüpp et al, 2015). Seedlings production for both timber and ecosystem restoration purposes are limited to the lack of technical information on the seedlings' needs and correct chemical fertilizers and their precise doses (Rossa et al, 2015), as well as the recommendable recipient volumes to be employed (Dias et al, 2018). Thus, it is essential to carry out research and promote techniques to enable the production of native commercial species at low cost and adapted to the current planting systems.…”

Section: Introductionmentioning

confidence: 99%

Seedling quality of Agonandra brasiliensis in response to different Osmocote® doses and recipient volumes

Mota¹,

Smiderle²,

Dionísio

et al. 2021

RSD

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The objective of this work was to evaluate seedlings quality of the tree species Agonandra brasiliensis under different doses of the controlled release fertilizer (CRF) Osmocote® and recipient volumes. The experiment was set up in a factorial design for two recipient volumes (1.8 L and 2.2 L) and five CRF doses (0.0; 0.5; 1.0; 2.0; and 3.0 g L-1 of substrate). Four repetitions of one plant each were used. After transplanting seedlings, stem height, stem collar diameter, and the robustness index (RI) were measured in a monthly basis during eight months. The highest seedlings growth was observed with the CRF Osmocote® dose of 2.0 g L-1 and recipients of 2.2 L. The treatment with CRF dose of 2.0 g L-1 in 240 days presented higher initial accumulated growth in height of A. brasiliensis seedlings (mean = 31.38 cm). Seedlings under the dose of 2.0 g L-1 presented 85.90% increase of stem height in relation to the control (substrate without CRF). CRF Osmocote® had positive effect on growth of A. brasiliensis seedlings. Growth was influenced by the different CRF doses and recipient volumes, both for the variables stem height and stem collar diameter and for the RI. The dose 2.0 g L-1 allowed greater accumulated growth in height and diameter in 240 days.

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MORPHOLOGICAL, ANATOMICAL AND PHYSIOLOGICAL CHARACTERISTICS OF Acrocarpus fraxinifolius WIGHT & ARN SEEDLINGS ACCORDING TO CONTAINERS AND FERTILIZATION

Cited by 6 publications

References 19 publications

Physiology in Talisia esculenta seedlings under irrigation with saline water on substrate with hydrogel

Physiology in Talisia esculenta seedlings under irrigation with saline water on substrate with hydrogel

Uso de adubos de liberação lenta na produção de mudas de Handroanthus impetiginosus

Seedling quality of Agonandra brasiliensis in response to different Osmocote® doses and recipient volumes

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