O alto teor de silício no solo inibe o crescimento radicular de cafeeiros sem afetar as trocas gasosas foliares

Ribeiro, Rafael Vasconcelos; Silva, Leandro da; Ramos, Rômulo Augusto; Andrade, Cristiano Alberto de; Zambrosi, Fernando César Bachiega; Pereira, Sérgio Parreiras

doi:10.1590/s0100-06832011000300028

Cited by 14 publications

(7 citation statements)

References 36 publications

(56 reference statements)

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“…These results agree with those obtained by Ribeiro et al (2011), who applied calcium silicate to coffee plants and found that the highest calcium silicate dose (6 mg ha -1 ) provided a reduction in coffee plant root systems without compromising the functionality and development of the plant aerial parts.…”

Section: Analysis Phytotechnicalsupporting

confidence: 91%

<b>Effects of silicon on the growth and genetic stability of passion fruit

et al. 2016

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ABSTRACT. The objective of this study was to determine the silicon concentration that would provide good growth in passion fruit plants. Passion fruit seeds were sown in polystyrene. After 60 days, when they were approximately 15 cm tall, the plants were transplanted into polyethylene pots containing 1.1 kg Tropstrato® substrate. Treatments consisted of four concentrations (0, 0.28, 0.55, and 0.83 g pot -1 ) of silicon applied as a silicic acid solution 1%. This solution was applied around the stem of the plants (drenched), with the first application being administered 15 days after transplanting. In total, three applications were made at intervals of 15 days. After the last application, the plants were subjected to chemical analysis to determine the silicon concentration and to X-ray microanalysis and flow cytometry. Phytotechnical analyses were performed during the applications. The use of silicon in concentrations of 0.28 and 0.55 g pot -1 provides better growth of the passion fruit, and the absorption and deposition of the silicon in the passion fruit leaves are proportional to the availability of this element in the plant. The roots of the passion fruit plant are silicon accumulators, and the DNA stability and amount are preserved in the silicon-treated passion fruit plants. ) de silício, na forma de solução de ácido silícico a 1%. Esta solução foi aplicada ao redor do caule das plantas (drench), sendo a primeira aplicação realizada 15 dias após o transplantio das plantas. No total, foram realizadas três aplicações, em intervalos de 15 dias. Após a última aplicação, as plantas foram submetidas à análise química de concentração de silício, microanálise de raios-X e citometria de fluxo. As análises fitotécnicas foram realizadas no decorrer das aplicações. O uso do silício nas concentrações 0,28 e 0,55 g vaso -1 , proporciona melhor crescimento das plantas de maracujazeiro, a absorção de silício e sua deposição nas folhas de maracujazeiro são proporcionais à disponibilidade desse elemento para a planta, o maracujazeiro é uma planta acumuladora de silício nas raízes e a estabilidade da quantidade de DNA é preservada nas plantas de maracujazeiro tratadas com silício.Palavras-chave: citometria de fluxo, ácido silícico, Passiflora edulis.

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Section: Analysis Phytotechnicalsupporting

confidence: 91%

<b>Effects of silicon on the growth and genetic stability of passion fruit

et al. 2016

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“…Similar results were found by [15] for elephant grass. However, the fresh and dry masses of the roots were lower in the silicon treatments of both cultivars, a result similar to that found by [16] in coffee trees, where silicate fertilization decreased root dry mass accumulation.…”

Section: Resultssupporting

confidence: 86%

Response of Moderate Pest Resistant and Susceptible Cultivar of Sugarcane to Silicon Application

Vilela¹,

Moraes²,

Coelho³

et al. 2014

AJPS

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In this study, the effects of a silicon (Si) application on the biomass, chlorophyll level and silicon level of sugarcane moderate pest resistance (RB72454) and susceptible (SP801842) cultivars were tested. Investigations were also carried out to assess the effect of silicon on Diatraea saccharalis infestation. The experiments were conducted in a greenhouse using the treatments consisting moderate pest resistant and susceptible culivar, with or without silicon application. The silicon was applied to the soil around the plants. The experiment was laid in complete randomized design with 4 treatments and 10 replicates. The data were subjected to an analysis of variance, and the averages were compared using the Tukey test (p ≤ 0.05). Significant changes were observed in the fresh and dry masses of the aerial portions and the root system, as well as in the plant chlorophyll and silicon levels. The silicon content increased in the susceptible variety which was significantly equal for moderate resistance variety. Chlorophyll content increased in silicon treated cultivars. Sixty days after the last application, 10 adult D. saccharalis moths were released onto each pot. However, due to the low infestation, the effects of silicon on the insect incidence could not be determined. One can conclude that silicon is beneficial for the growth of the aerial portions of sugarcane and causes a significant increase in chlorophyll levels.

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“…For the variable RDM21d, the results found were adjusted to a negative quadratic model, where the increase in Si doses had its minimum point at 104 g of Si 100 kg -1 of seeds, although, not compromising the shoot development (Table 1). Similar effect was observed by Ribeiro et al (2011) in coffee seedlings and Farias Júnior et al (2009) in rice, when the plants were supplied with elevated Si doses.…”

Section: Resultssupporting

confidence: 81%

Silicon Added to Common Bean Seeds: Physiologic and Sanitary Effects

Migliorini¹,

Martins²,

Carvalho³

et al. 2019

JAS

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The objective of this study was to evaluate the effect of the of common bean seeds coating with different doses of Si, supplied by the carbonized rice hulls, in its physic, physiologic and sanitary attributes, as well determine the amount of this element absorbed in plants. The experiment was conducted in Laboratory of Seed Analysis belonging to the Universidade Federal de Pelotas-Brazil, during the crop season 2014/2015. For this, common bean seeds of cultivar BRS Expedito were treated at doses of 0, 45, 90, 135 and 180 grams of Si 100 kg-1 of seeds, using a completely randomized experimental design with four replicates The use of different doses of carbonized rice hulls in the seed coat does not alter the physical quality and does not negatively affect the physiological quality of the seeds. Crescent doses of carbonized rice hulls up to 101 g of Si 100 kg-1 of seeds increase the seedlings vigor evaluated by the total dry mass and length of shoot at 21 days after seeding, as well as the Si amount in roots. The root dry mass at 21 days after seeding presents growth reduction with the increase of doses until 104 g of Si 100 kg-1 of seeds, although, without compromising the shoot development and the element accumulation. The different Si doses supplied by the carbonized rice hulls do not control pathogens associated to seeds.

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O alto teor de silício no solo inibe o crescimento radicular de cafeeiros sem afetar as trocas gasosas foliares

Cited by 14 publications

References 36 publications

<b>Effects of silicon on the growth and genetic stability of passion fruit

<b>Effects of silicon on the growth and genetic stability of passion fruit

Response of Moderate Pest Resistant and Susceptible Cultivar of Sugarcane to Silicon Application

Silicon Added to Common Bean Seeds: Physiologic and Sanitary Effects

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