Absorção e translocação de silício em mudas de eucalipto cultivadas em latossolo e cambissolo

Carvalho, Ruy Inácio Neiva de; Neto, Antônio Eduardo Furtini; Curi, Nilton; Resende, Á. V. de

doi:10.1590/s1413-70542003000300001

Cited by 12 publications

(19 citation statements)

References 14 publications

(14 reference statements)

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“…These results are similar to those found by Carvalho et al (2003) in eucalyptus seedlings. These authors have concluded that although responsive to Si, eucalyptus cannot be considered an accumulator species, as most dicotyledons can.…”

Section: Nutrients Plant Partssupporting

confidence: 91%

“…However, for eucalyptus, Carvalho et al (2003) found greater retention of Si in the roots instead of shoots after 60 days. This behavior would possibly occur in coffee plants if the experimental period were greater, since for dicotyledons it is common to find higher accumulation of Si in the roots.…”

Section: Nutrients Plant Partsmentioning

confidence: 78%

“…Difference Difference growth of a monocotyledon such as wheat and rye (Jarvis, 1987 ), and eucalyptus, woody dicotyledon (Carvalho et al, 2003). However, for eucalyptus, Carvalho et al (2003) found greater retention of Si in the roots instead of shoots after 60 days.…”

Section: Nutrients Plant Partsmentioning

confidence: 90%

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Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Cunha

Oliveira²,

Caballero

et al. 2012

Rev. Ceres

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RESUMO Crescimento e absorção de nutrientes pelo cafeeiro cultivado em solução nutritiva com e sem adição de silícioA adubação silicatada do cafeeiro promove alteração da nutrição da planta e de seu crescimento. Assim, a determinação da absorção de silício e sua influência na absorção de macro e micronutrientes pelas plantas são essenciais para avaliar as implicações deste elemento na fisiologia vegetal, bem como no manejo adequado da cultura. O objetivo deste trabalho foi avaliar a absorção de silício por plantas de café e seu efeito no crescimento e na absorção de outros nutrientes. A pesquisa foi conduzida em casa de vegetação do Departamento de Fitotecnia da Universidade Federal de Viçosa, em Viçosa, Minas Gerais, Brasil. O delineamento utilizado foi o inteiramente casualizado, com dois tratamentos (com e sem adição de silício) e três repetições, cada uma delas composta por três plantas. Foram retiradas alíquotas, a cada três dias, das soluções nutritivas e avaliadas as quantidades de silício e potássio absorvidas, bem como o consumo de água por plantas de café, além da concentração de OH -na solução nutritiva. Ao final de 33 dias, as plantas foram avaliadas quanto à massa de matéria fresca e seca de folhas, raízes e caule; altura da parte aérea e comprimento Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon additionIn recent years, the application of silicon (Si) in crops, including coffee, has become a common practice. The objective of this study was to assess the silicon uptake by coffee seedlings and its effects on plant growth, water and macro and micronutrient uptake. The research was conducted using nutrient solution in a greenhouse at the Departamento de Fitotecnia da Universidade Federal de Viçosa, in a completely randomized design with two treatments (with and without silicon) and three replications. Each plot consisted of three plants grown in a 800 mL vessel containing the treatment solutions. At every three days, water consumption, the concentration of OH -and the depletion of Si and K were assessed in the nutrient solutions. After 33 days, the plants were assessed with regard to their fresh and dry weight of leaves, roots and stem, shoot height and total length of the plant (shoot and root). Number of leaves and internodes, and the content and accumulation of silicon, macro, and micronutrients were also determined. The consumption of water, the amount of potassium uptake and, biomass accumulation were greater in plants grown in solution without silicon addition. However, the concentration of OH -in the solution and the amount of silicon uptake were greater in plants grown in solution with added silicon. Silicon accumulation was greater in leaves than in stem and roots. Silicon decreased coffee plant accumulation of phosphorus, potassium, calcium, zinc, copper and iron.

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Section: Nutrients Plant Partssupporting

confidence: 91%

Section: Nutrients Plant Partsmentioning

confidence: 78%

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Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Cunha

Oliveira²,

Caballero

et al. 2012

Rev. Ceres

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“…Analisando-se a relação entre o teor de Si na parte aérea e na raiz de eucalipto, Carvalho et al (2003) observaram a retenção desse elemento nas raízes, pois a relação PA/R começou a reduzir-se a partir de 60 dias após o sua transplantio, indicando diminuição da eficiência de sua translocação com o aumento da idade das plantas. De maneira semelhante, Pozza (2004) verificou que a cultivar de café Mundo Novo apresentou maior relação PA/R para N, P, K, Ca, Mg, S, B, Mn e Si, justificando a maior capacidade de translocar esses nutrientes das raízes para a parte aérea.…”

Section: Relação Do Acúmulo De Nutrientes Entre a Parte Aérea E As Raunclassified

Aumento da eficiência nutricional de tomateiros inoculados com bactérias endofíticas promotoras de crescimento

Barretti

Souza

Pozza³

et al. 2008

Rev. Bras. Ciênc. Solo

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RESUMOBactérias endofíticas promotoras de crescimento podem aumentar a eficiência nutricional das plantas, favorecendo sua produção. O objetivo deste trabalho foi avaliar a influência de 10 isolados de bactérias endofíticas, previamente selecionados como agentes promotores do crescimento de plantas, sobre a eficiência de absorção, utilização e translocação de nutrientes em plantas de tomateiros em casa de vegetação. Para a introdução das bactérias endofíticas em plântulas de tomateiro cv. Santa Clara, utilizou-se o corte do hipocótilo. Cinqüenta e cinco dias após o transplantio das seções de parte área, as plantas foram coletadas para a determinação da matéria seca da parte aérea e dos teores de macro e micronutrientes. Os teores de N, P, K, Ca, Mg, Cu e Zn na parte aérea e os de N, P, Mg e Mn nas raízes das plantas inoculadas diferiram da testemunha sem inoculação. As bactérias endofíticas

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“…The second reason is that soluble Si acts as a modulator of host resistance to pathogens, activating some defense mechanisms (Ma and Yamaji, 2006). SiO 2 combines with water molecules (2H 2 O), forming H 4 SiO 4 which can be considered as a "water deposit" (Carvalho et al, 2003), being important during periods of water stress by providing water to the plants, since water is the most limiting factor for plant growth in tropical regions (Stape et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Do the nutrition and physiology of eucalyptus seedlings respond to silicon (Si) supply?

Mateus¹,

Ferreira²,

Toledo³

et al. 2017

Aust J Crop Sci

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In Brazil, Eucalyptus plantations are found, generally in soils with naturally low chemical fertility. Silicon (Si) can improve photosynthesis, decrease plant transpiration and increase water use efficiency (WUE). This study aimed to evaluate the effect of Si supply at five rates (0, 0.25, 0.50, 0.75 and 1.00 mmol L −1 ) for growing Eucalyptus clone IPB8 seedlings (E. urophylla × E. grandis) in Clark's nutrient solution in a greenhouse. Plant growth, nutritional status, gas exchange, leaf water potential (Ψ w ), leaf area (LA), inclination angle of leaves and stomatal density (SD) were measured. There was no significant response in Eucalyptus seedling growth due to Si application, which was related to the absence of benefits provided by Si in plant nutritional status and physiology. The efficiency of assimilation (EA), efficiency of translocation (ET) and efficiency of utilization (EU) did not show significant results either. The low ET indicates that Si was highly accumulated in the root (75.4 % in relation to total Si absorbed by plants), which may also have contributed to the lack of the benefits expected. Despite that, Si application promoted higher rates of photosynthesis when compared to plants with 0 mmol Si L −1 , increasing the total dry matter production by up to 28 % at an Si rate 0.50 mmol L −1 , which also provided a trend of higher growth, EU, LA and SLA, showing it to be the best rate for this Eucalyptus species.

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Absorção e translocação de silício em mudas de eucalipto cultivadas em latossolo e cambissolo

Cited by 12 publications

References 14 publications

Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Growth and nutrient uptake of coffee seedlings cultivated in nutrient solution with and without silicon addition

Aumento da eficiência nutricional de tomateiros inoculados com bactérias endofíticas promotoras de crescimento

Do the nutrition and physiology of eucalyptus seedlings respond to silicon (Si) supply?

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