Enraizamento e aclimatização de plantas micropropagadas de gipsofila

Bosa, Nair; Calvete, Eunice Oliveira; Nienow, Alexandre Augusto; Suzin, Marilei

doi:10.1590/s0102-05362003000200017

Cited by 12 publications

(11 citation statements)

References 9 publications

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“…The concentrations of nitrate and ammonium were determined using the Flow Injection Analysis System (Ruzicka and Hansen, 1981) at the Center for Nuclear Energy in Agriculture, University of Sao Paulo (Piracicaba, Brazil). Ammonium was (Bosa et al, 2003), shoot and root dry weight, and concentrations of N, P, K, Ca, Mg, and S in the shoots and roots according to Malavolta et al (1997) methodology. The plants were dried in an oven at 65°C until reaching a constant mass.…”

Section: Methodsmentioning

confidence: 99%

Controlled-release Fertilizers Improved Croton Growth and Reduced Nitrogen Leaching

Braghin¹,

Mello²,

Angelotti-Mendonça³

et al. 2019

horts

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Fertilizer management is an essential step in the production process, as it allows the plant to use its productive capacity to the fullest extent possible. Researchers have tested maximum nutrient use with reduced losses to the environment aiming to increase productivity with fewer environmental impacts. This study compared the effects of controlled-release fertilizers (CRFs) with water-soluble fertilizer (WSF) and clear water (control) on the growth and nutrient uptake of croton (Codiaeum variegatum L.) and nitrogen leaching. The experiment was conducted with three replications and six treatments: two rates (1.5 g and 3.0 g per liter of substrate) of two CRFs [Osmocote Plus (15% N, 3.93% P, and 9.96% K) and Basacote (15% N, 3.49% P, and 9.96% K)], WSF, and clean water as control. All CRFs were applied before planting and WSF was supplied as nutrient solution through automated moisture sensor activated irrigation system. Plant growth (number of leaves, leaf area, stem height, root volume, and shoot and root dry weights) and total nutrient contents in the leaf tissue were evaluated every 30 days. Electrical conductivity (EC), pH, nitrate, ammonium, and total nitrogen contents were measured in the leached solution. Indeed, results showed that CRFs at a low rate provided similar development and quality of croton plants compared with WSF. Plant growth indicators were similar until 90 days after transplanting (DAT). After that, at 150 DAT, the highest values to number of leaves and leaf area occurred with WSF and with the lowest CRF rate as compared with the other treatments and control. The highest root volume was found with the WSF, which resulted in larger roots compared with the other treatments. These results showed WSF can be replaced by CRFs at low rates on croton growth. Moreover, according to the visual scale, the best treatments were WSF and Basacote at the low rate, where plants were bright, with multicolored leaves with prominent orange shades. However, CRFs maintained pH and EC within the recommended range for the growth of croton and reduced the nitrogen leaching from the pots.

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Section: Methodsmentioning

confidence: 99%

Controlled-release Fertilizers Improved Croton Growth and Reduced Nitrogen Leaching

Braghin¹,

Mello²,

Angelotti-Mendonça³

et al. 2019

horts

View full text Add to dashboard Cite

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“…10, No. 6; porosity increasing the availability of water (Bosa et al, 2003;Brahm et al, 2013), since all the substrates were enriched with nutrients in the environment after sterilization. This, providing the best ability in root formation can also be attributed to aeration and moisture retention due to the high availability of the raw material in the regions (Cardoso et al, 2011;Freitas et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Regional Substrates of the Brazilian Northeast on Acclimatization and Development Morphological of Minirose

Anjos¹,

Dias²,

Hernández³

et al. 2018

JAS

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The transition from heterotrophism to autotrophism in acclimatization is a delicate process for most species. The objective of this work was to evaluate combinations of regional substrates of the Brazilian Northeast in the acclimatization and morphological development of minirose (Rosa chinensis 'Minima') seedlings. The experiment was carried out in a greenhouse using seedlings with 30 days of in vitro culture. The treatments were constituted by: 1) dry coconut powder; 2) 75% dry coconut powder + 25% rice husk; 3) 50% dry coconut powder + 50% rice husk; 4) 75% dry coconut powder + 25% charcoal rice husk; 5) 50% dry coconut powder + 50% carbonized rice husk; 6) 100% vermiculite; 7) 50% vermiculite + 50% dry coconut powder; 8) commercial substrate; 9) 75% sand + 25% dry coconut powder and 10) 50% sand + 50% dry coconut powder. After 21 days, the following characteristics were evaluated: survival percentage, leaf number, shoot height, dry matter of shoot and root and total dry matter. The regional materials tested showed a good choice of substrates to be used in the acclimatization of minirose seedlings. The vermiculite presented the worst results in the characteristics evaluated. Dry coconut powder as substrate should be used in mixtures with other materials to provide better acclimatization conditions. The use of 50% dry coconut powder + 50% rice husk provided a best development and growth of minirose seedlings (Rosa chinensis 'Minima') than other tested substrates

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“…As médias obtidas para relação DP/DE (1,92 µm) estão relacionadas a forma elíptica apresentada pelos estômatos. Resultados similares foram obtidos para espécies do gênero Cymbidium in vitro (BOSA et al, 2003). Diferente do observado em C. mucugensis subsp.…”

Section: Resultsunclassified

In vitrohaderning in different enviroment and acclimatization of microplants ofComanthera mucugensisGiul. subsp.mucugensis

Lima-Brito

Albuquerque

Resende

et al. 2016

Revista Ciência Agronômica

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Enraizamento e aclimatização de plantas micropropagadas de gipsofila

Cited by 12 publications

References 9 publications

Controlled-release Fertilizers Improved Croton Growth and Reduced Nitrogen Leaching

Controlled-release Fertilizers Improved Croton Growth and Reduced Nitrogen Leaching

Regional Substrates of the Brazilian Northeast on Acclimatization and Development Morphological of Minirose

In vitrohaderning in different enviroment and acclimatization of microplants ofComanthera mucugensisGiul. subsp.mucugensis

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