Desenvolvimento vegetativo de orquídeas submetidas a diferentes formulações de macronutrientes e freqüências de adubação durante a fase de aclimatização

Lone, Alessandro Borini; Takahashi, Lúcia Sadayo Assari; Faria, Ricardo Tadeu de; Assis, Adriane Marinho de; Unemoto, Lilian Keiko

doi:10.5433/1679-0359.2010v31n4p895

Cited by 6 publications

(7 citation statements)

References 2 publications

(2 reference statements)

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“…Similar results were obtained by Ferreira et al (2007) when working with seedlings of bromeliad (Neoregelia cruenta), checked linear increases for height of the plants with the fortnightly application of urea solution of 0.1 and 2% by foliaceous pulverization. However, the results partially agree with those presented by Lone et al (2010) who checked larger length of the air part of the hybrid Cattleya intermedia Graham ex Hooker × Laelia purpurata Lindley (Orchidaceae) with the fortnightly application of 200 mg of N/L using the formulated fertilizer 10-10-10. Bernardi et al (2004) that worked with applications of 5.25, 10.51, 15.76.…”

Section: Resultssupporting

confidence: 89%

“…According to Lone et al (2010), the application of water soluble macro and micronutrients can be performed by foliaceous or root application, or both simultaneously. However, to proceed fertilization, it is important to know the different stages of orchids' development cycle, so that it is possible to define which manure will be employed in the correct form (Campos, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen fertilization in Oncidium baueri seedling growth

Schnitzer¹,

Brito²,

Faria³

2018

Afr. J. Agric. Res.

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This study was conducted with the objective of evaluating the nitrogen fertilization in orchid seedling formation. The experiment was conducted in a greenhouse environment with a coated polypropylene mesh with retention capacity of 60% of the solar radiation flux at the greenhouse of the Department of Agronomy of State University of Londrina-PR, Brazil. One year old seedlings of the orchid species Oncidium baueri has been used (Lindl.) from in vitro propagation, with an average height of 8.0 ± 1.0 cm. The experimental design was completely randomized with four replications and the treatments resulted from a 2×7 factorial design in which the factors were two sources (urea and ammonium sulfate) and seven doses of nitrogen applied fortnightly (0.00, 0.75, 1.50, 2.25, 3.00, 3.75, and 4.50 mg/pot). The experiment was conducted for a period of one year and the following variables were evaluated: largest pseudobulb length, plant height, highest root length, leaf area, root number, dry matter, number of leaves, and Dickson quality index. The use of ammonium sulphate resulted in the highest average values to the length of the longest pseudobulb, plant height, leaf area, length of the longest root, and plant dry matter, except for the number of leaves and Dickson quality index. The application of nitrogen between 3.20 and 4.33 mg/pot resulted in the highest values for the length of the longest pseudobulb, number of roots, length of the longest root, number of leaves, plant height and Dickson quality index for O. baueri (Lindl.) orchid. The plant height and leaf area variables increased significantly with increasing doses of N regardless of the source used, but the length of the longest pseudobulb, number of roots and dry matter production of plant only increased when urea was used as a nitrogen source.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Nitrogen fertilization in Oncidium baueri seedling growth

Schnitzer¹,

Brito²,

Faria³

2018

Afr. J. Agric. Res.

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“…The effect of nutrition on this diverse family that grows on varied substrates (Assis et al, 2008;Schnitzer et al, 2010) and under different fertilization regimes, chemical and/or organic (Bernardi et al, 2004;Lone et al, 2010;Rodrigues et al, 2010), has not been extensively studied. Most substrates used for cultivation of orchids are poor in nutrients and/or present low capacity for supplying nutrients, making fertilization necessary under these conditions (Rego et al, 2000;Araujo et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus-Zinc Interaction and Iron and Manganese Uptake in the Growth and Nutrition of Phalaenopsis (Orchidaceae)

Novais¹,

Novais

et al. 2016

Rev. Bras. Ciênc. Solo

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Visual symptoms of Zn deficiency, induced by excessive P applications, have been observed in commercial orchid nurseries. The supply of other metallic micronutrients, such as Fe and Mn, may also be inadequate in the plant due to high application rates of P. The aim of this study was to investigate this interaction in the nutrition of Phalaenopsis plants. Experimental treatments consisted of three P rates . Dry matter production was evaluated, as well as the levels of P, Zn, Fe, and Mn in both shoots and roots. Higher P rates induced higher shoot dry matter production. However, symptoms of Zn deficiency were observed in plants treated with the highest P rate in the absence of Zn. With increasing P rates, Zn concentrations in the shoots decreased more markedly than in roots, with accumulation of the element in the roots, indicating low Zn translocation to the shoot. A much higher Mn content in shoots (661 mg kg ) suggested that the species is highly tolerant to this micronutrient. The Fe concentrations in the plant were much higher than those indicated in the literature as critical levels for this genus.

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“…UFGD, Dourados-MS, 2009. Existem orquídeas que se desenvolveram adequadamente em pH em torno de 3,5 e outros em pH em torno de 7,0 (DRONK et al, 2012;KÄMPF, 2000) assim como foram identificadas plantas que se desenvolveram igualmente em condutividade elétrica variando de 65,6 a 213,9 µS cm -1 (LONE et al, 2010;DRONK et al, 2012). As plantas B. tuberculata apresentaram os maiores resultados de %MFR em substratos cujo pH variou de 5,8 a 6,0 e condutividade elétrica entre 250,0 e 260,0 µS cm -1 (Tabela 1).…”

Section: Aclimatização De Plantas De Brassavola Tuberculata Hookunclassified

Armazenamento de sementes e aclimatização de Brassavola tuberculata Hook

et al. 2014

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ResumoA semeadura in vitro e a aclimatização das plântulas produzidas são responsáveis pelo sucesso da produção de Orchidaceae. Este trabalho teve por objetivos 1) avaliar a viabilidade das sementes de B. tuberculata armazenadas em diferentes temperaturas e 2) avaliar o crescimento ex vitro de B. tuberculata em diferentes substratos. As sementes foram armazenadas, por 84 dias, sob três condições: temperatura ambiente (23 ± 2 ºC), refrigerador (4 ± 2 ºC) ou freezer (-14,5 ± 2 ºC). Foi utilizado o delineamento experimental inteiramente casualizado e os tratamentos foram arranjados em esquema fatorial 3 (condições de temperatura) x 6 (períodos de armazenamento) com três repetições. A viabilidade das sementes foi determinada através do teste de tetrazólio. Para a aclimatização, plantas com dois anos, oriundas de semeadura in vitro, foram aclimatizadas em bandejas plásticas contendo: 1-esfagno; 2-carvão ou 3-fibra de coco. Foi utilizado o delineamento experimental inteiramente casualizado com 3 tratamentos e 4 repetições de 10 plantas cada. As plantas permaneceram por 365 dias em viveiro, sob condições ambientais e recebendo luminosidade média diária de 130 µmol m -2 s -2 . Após esse período, as plantas foram avaliadas quanto à porcentagem de sobrevivência, de massa fresca e seca da parte aérea e das raízes, sendo também calculadas as relações entre a massa fresca das plantas, o comprimento da parte aérea e da maior raiz, o número de raízes e o número de perfilhos, observados no final do período experimental em relação àqueles registrados no plantio. Após 84 dias sementes armazenadas em condições ambientais apresentaram 0,0 % de viabilidade, enquanto que aquelas armazenadas em refrigerador e em freezer apresentaram 77,6 e 67,2 % de viabilidade. Ao final do período de aclimatização, todas as relações entre os valores iniciais e finais foram superiores a 1,00 indicando que as condições apresentadas pelos três substratos propiciaram o crescimento da espécie, sendo a porcentagem de sobrevivência das plantas em torno de 89 %. Conclui-se que sementes de B. tuberculata devam ser armazenadas em refrigerador e que os substratos estudados podem ser utilizados na aclimatização de plantas de B. tuberculata. Palavras-chave: Orquídeas, substratos, viabilidade de sementes AbstractIn vitro sowing and acclimatization of the produced plantlets are responsible factors for the successful production of Orchidaceae. This study aimed to: 1) evaluate the viability of B. tuberculata seeds stored

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Desenvolvimento vegetativo de orquídeas submetidas a diferentes formulações de macronutrientes e freqüências de adubação durante a fase de aclimatização

Cited by 6 publications

References 2 publications

Nitrogen fertilization in Oncidium baueri seedling growth

Nitrogen fertilization in Oncidium baueri seedling growth

Phosphorus-Zinc Interaction and Iron and Manganese Uptake in the Growth and Nutrition of Phalaenopsis (Orchidaceae)

Armazenamento de sementes e aclimatização de Brassavola tuberculata Hook

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