Produção De Mudas De Timbaúba Sob Diferentes Concentrações De Efluente Doméstico Tratado

Costa, Monalisa Soares; Alves, Silas Franco dos Reis; Neto, Miguel Ferreira; Batista, Rafael Oliveira; Costa, Lígia Luciane Barros da; Oliveira, Walber Feijó de

doi:10.15809/irriga.2012v1n01p408

Cited by 9 publications

(9 citation statements)

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“…of DBS and the application of 190.7 mg dm -3 of N contributed positively only to the increase of shoot:root dry matter ratio. Nitrogen is one of the most important nutrients for plants, being the essential constituent of amino acids, proteins, nitrogenous bases, nucleic acids, hormones, and chlorophyll, among other molecules necessary for the growth and development of plants (Costa et al, 2012;. On the other hand, DBS is a substrate with high nutrient contents as previously reported by Amaral et al (2010), which showed that the DBS had a pH of 6.8, 0.31 mS cm -1 of electrical conductivity, 1.98 mg L -1 of nitrogen, 22.77 mg L -1 of potassium, 2.13 mg L -1 of calcium and 0.93 mg L -1 of magnesium.…”

Section: Resultsmentioning

confidence: 99%

“…During the seedling production phase of this species, some management factors must be considered, in order to increase the germination rate and to provide faster growth and uniformity of the cagaita plants (Souza et al, 2001). Among these factors, the proper management of fertilization, especially of nitrogen, should be highlighted, since this essential nutrient is directly related to some mechanisms and metabolic processes of the plant, such as photosynthesis, respiration, root development, nutrient absorption, differentiation cellular and growth (Costa et al, 2012). Another factor to be highlighted is the type of substrate used, since the substrate is responsible for nutrient supply, aeration, and water retention, providing conditions for the proper growth and development of the plant root system (Alves et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Decomposed Buriti Stem and Nitrogen Application Rates on the Growth of Eugenia dysenterica DC (Myrtaceae) Seedlings

Fonseca¹,

Oliveira²,

Sousa³

et al. 2019

JAS

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The effects of substrates formulated with different proportions of decomposed buriti stem (Mauritia flexuosa) and the application of nitrogen fertilizer rates in the production of cagaita (Eugenia dysenterica DC.) seedlings were investigated in this study. The treatments were arranged in a completely randomized design, in a 3 × 5 factorial: three substrates formulated from different proportions of decomposed buriti stem (0, 25 and 50%) with a clay loam soil (Oxisol), and five N fertilizer rates (0; 100; 200; 300 and 400 mg dm-3), with four replicates. At 60 days after emergence, the plant height, stem diameter, leaf area, root length, dry matter accumulation of shoots, roots, and total, shoot:root dry matter ratio (SRR), height:diameter ratio (HDR), and Dickson quality index (DQI) were measured. The substrate containing soil and decomposed buriti stem in the proportion of 3:1 (v:v), in association with the application of N rates from 167 to 190 mg dm-3 is recommended for the production of cagaita seedlings, resulting in positive effects on plant growth and development as reported by higher PH, SRR, and HDR. The application of 154 mg dm-3 of N resulted in higher DQI of the cagaita seedlings.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decomposed Buriti Stem and Nitrogen Application Rates on the Growth of Eugenia dysenterica DC (Myrtaceae) Seedlings

Fonseca¹,

Oliveira²,

Sousa³

et al. 2019

JAS

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“…Distribui-se pelos estados do Pará, Maranhão e Piauí até o Mato Grosso do Sul e Rio Grande do Sul, como também, nas florestas pluviais e semidecíduas (COSTA et al, 2009). Sua madeira é considerada de durabilidade mediana, podendo ser empregada na fabricação de canoas, móveis, portas, caixotaria em geral e construção civil (LORENZI, 2002;COSTA et al, 2012).…”

Section: Introductionunclassified

Teste de tetrazólio em sementes de timbaúba

Nogueira

Freitas

2014

Sem. Ci. Agr.

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ResumoO teste de tetrazólio tem se mostrado uma alternativa promissora na determinação da viabilidade e do vigor da semente de espécies florestais pela qualidade e rapidez na obtenção dos dados. Dessa forma, o presente trabalho foi desenvolvido objetivando-se padronizar a metodologia de condução do teste de tetrazólio para a avaliação da qualidade fisiológica de lotes de sementes de timbaúba. Para avaliar qualidade fisiológica das sementes os quatro lotes foram submetidos às seguintes determinações: teor de água, teste de germinação, primeira contagem e velocidade de germinação. Quatro repetições, com 25 sementes de cada lote, foram submersas em solução de tetrazólio nas concentrações de 0,1; 0,07 e 0,050%, e mantidas no escuro a 35 °C, por períodos de 1; 3 e 6 horas. Decorridos os períodos de coloração, as sementes foram lavadas, seccionadas longitudinalmente entre os cotilédones e classificados em viáveis e não viáveis. A exposição das sementes pelos períodos de uma hora e de seis horas mostrouse inadequada para a condução do teste de tetrazólio, uma vez que não promoveu a coloração adequada a interpretação dos resultados. O teste de tetrazólio é uma alternativa viável para a avaliação de vigor de lotes de timbaúba. Para condução do teste recomenda -se a escarificação das sementes seguida de embebição em água por 24 horas e retirada do tegumento, com posterior imersão das sementes por três horas em solução de tetrazólio de 0,075%, a 35 ºC. Palavras-chave: Enterolobium contortisiliquum, potencial fisiológico, viabilidade AbstractThe tetrazolium test has shown itself to be a promising alternative in determining the viability and vigor of seeds of forest species by the quality and speed of data collection. Thus, this paper was developed with the goal of standardizing the methodology for conducting the tetrazolium test for assessing the physiological quality of seed lots Timbaúba. To evaluate the physiological quality of seeds the four lots were subjected to the following determinations: water content, germination, first count and speed germination. Four replicates of 25 seeds from each batch were submerged in tetrazolium solution and kept in the dark at 35 °C for periods of 1, 3 and 6 hours under concentrations of 0.1, 0.075 and 0.050%. After the staining periods, the seeds were washed, split lengthwise between the cotyledon and ranked in viable and not viable. Seed exposure for periods of one hour and six hours has proved inadequate for driving the tetrazolium test since not promoted the proper interpretation of staining results. The tetrazolium test is a viable alternative for the evaluation of existing lots of Timbaúba. To conduct the test recommended scarification followed by soaking the seeds in water for 24 hours and coat removal, with subsequent soaking of seeds for three hours in tetrazolium solution of 0.075 % at 35 ºC.

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“…The increase in the number of leaflets in K. ivorensis seedlings provided by two treatments is a favorable result regarding its application, since according to Costa et al (2012), leaves and leaflets contribute to a greater photosynthetic activity, supplying plants in terms of energy and contributing to their development.…”

Section: /7mentioning

confidence: 99%

Trichoderma spp. and its effects on seeds physiological quality and seedlings development of African mahogany

Lustosa

Araújo

Campos

et al. 2020

Agraria

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Trichoderma is a beneficial fungus that can be used in both the control of phytopathogens and in promoting germination and plant growth. Thus, this study aimed to evaluate the effect of five Trichoderma isolates (T09, T12, T52, Tc and Tce) in seven different application modes on seeds and seedlings of the Khaya ivorensis A. Chev. (African mahogany). Fungi applications were tested by microbiolization of the seeds, in the pre-planting substrate, by monthly applications in the seedlings and in four combinations of these three treatments. Under laboratory conditions, the germination, germination speed index (GSI), and radicle and hypocotyl lengths were evaluated in seeds, treated and untreated, with Trichoderma. In the nursery, it was evaluated the height, root collar diameter, number of leaflets, root length, and the dry weight of root system and aerial part in seedlings with different forms of Trichoderma application. Trichoderma isolates did not influence germination percentage, GSI and radicle length. The fungus application methods in the K. ivorensis seedlings increased the height and leaflets number of the plants by at least one of the Trichoderma isolates tested in this study.Trichoderma spp. e seus efeitos na qualidade fisiológica das sementes e no desenvolvimento de mudas de mogno africano RESUMO: Trichoderma é um fungo benéfico que pode ser utilizado tanto no controle de fitopatógenos como na promoção da germinação e do crescimento de plantas. Assim, objetivou-se avaliar o efeito de cinco isolados de Trichoderma (T09, T12, T52, Tc e Tce), em sete modos de aplicação, sobre sementes e mudas de Khaya ivorensis A. Chev. (mogno africano). Foram testadas aplicações dos fungos via microbiolização das sementes, no substrato pré-plantio, em aplicações mensais nas mudas e, em quatro combinações desses três tratamentos. Em condições de laboratório foram avaliados a germinação, índice de velocidade de germinação (IVG) e, o comprimento da radícula e hipocótilo, em sementes tratadas e não tratadas com Trichoderma. Em viveiro, avaliou-se altura, diâmetro do coleto, número de folíolos, comprimento da raiz e, a massa seca da parte aérea e sistema radicular em mudas com as diferentes formas de aplicação de Trichoderma. Os isolados de Trichoderma não influenciaram a porcentagem de germinação, o IVG e o comprimento da radícula. Os modos de aplicação dos fungos avaliados nas mudas de K. ivorensis aumentaram a altura e o número de folíolos das plantas, por pelo menos um dos isolados de Trichoderma testado neste trabalho.Palavras-chave: tratamento biológico; sementes florestais; fungos; promoção de crescimento; Khaya ivorensis Trichoderma spp. and its effects on seeds physiological quality and seedlings development of African mahogany Rev. Bras. Cienc. Agrar., Recife, v.15, n.1, e5843, 2020 2/7

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Produção De Mudas De Timbaúba Sob Diferentes Concentrações De Efluente Doméstico Tratado

Cited by 9 publications

References 11 publications

Decomposed Buriti Stem and Nitrogen Application Rates on the Growth of Eugenia dysenterica DC (Myrtaceae) Seedlings

Decomposed Buriti Stem and Nitrogen Application Rates on the Growth of Eugenia dysenterica DC (Myrtaceae) Seedlings

Teste de tetrazólio em sementes de timbaúba

Trichoderma spp. and its effects on seeds physiological quality and seedlings development of African mahogany

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