Growth and gas exchanges of arugula plants under silicon fertilization and water restriction

Jesus, Edmar Gonçalves de; Fátima, Reynaldo Teodoro de; Guerrero, Amaralina Celoto; Araújo, Josinaldo Lopes; Brito, Marcos Eric Barbosa

doi:10.1590/1807-1929/agriambi.v22n2p119-124

Cited by 14 publications

(16 citation statements)

References 12 publications

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“…At 60 DAI there was an increase up to the dose of 9.08 mL L -1 , decreasing in subsequent doses ( Figure 3C). The results obtained in the present study corroborate those observed by Jesus et al (2018) in arugula, when they found that the application of silicon increased the rate of transpiration.…”

Section: Resultssupporting

confidence: 92%

Physiological responses of beet plants irrigated with saline water and silicon application

Filho¹,

Silva²,

Gonçalves³

et al. 2020

Com. Sci.

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Although not considered an essential element, silicon can be used to increase crop productivity, especially under stress conditions. In this sense, the objective was to evaluate the gas exchange of beet plants irrigated with saline water depending on the application of silicon. The experiment was conducted in a randomized block design, in a 5 x 5 factorial, referring to five levels of electrical conductivity of irrigation water (ECw): (0.5; 1.3; 3.25; 5.2 and 6.0 dS m-1) and five doses of silicon (0.00; 2.64; 9.08; 15.52 and 18.16 mL L-1), with six beet plants as an experimental unit. The effect of treatments on beet culture was evaluated at 30 and 60 days after irrigation with saline water from measurements of internal carbon concentration, stomatal conductance, net photosynthesis rate, instantaneous water use efficiency and instantaneous carboxylation efficiency using the LCpro+Sistem infrared gas analyzer (IRGA). Irrigation with saline water reduced the gas exchange of beet plants at 60 days after irrigation, but at 30 days after irrigation, the use of saline water increased stomatal conductance, transpiration rate and internal carbon concentration. The application of silicon decreased stomatal conductance, internal carbon concentration and efficiency in the use of water, but increased the rate of net photosynthesis, the rate of transpiration and instantaneous efficiency of carboxylation at 30 and 60 days after irrigation.

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Section: Resultssupporting

confidence: 92%

Physiological responses of beet plants irrigated with saline water and silicon application

Filho¹,

Silva²,

Gonçalves³

et al. 2020

Com. Sci.

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“…for the fresh and dry mass of the stem, reaching reductions of 59.8 and 97.1%. These results indicate that the application of Si promotes the development in plants under water deficit in function of promoting improvements in nutritional balance, providing a greater accumulation of Si in the cell wall and favoring the accumulation of biomass [28,12].…”

Section: Resultsmentioning

confidence: 81%

“…This effect suggests that decreasing water availability reduces leaf emission and mass production. Thus, the Si applied to plants with low water availability promotes improvements due to the deposition of Si in the roots, leaves and stem, reducing water loss through transpiration [12].…”

Section: Resultsmentioning

confidence: 99%

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Fluorescence and Growth of Eggplant under Irrigation Levels and Silicon Doses

Fátima

Nóbrega

Carreiro

et al. 2019

JEAI

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Aims: The study was conducted to evaluate the fluorescence and growth of eggplant under influence of water deficit and silicon doses. Study Design: The design was a randomized complete block design, in a 5 x 2 factorial arrangement, with four replications and one plant per plot, totaling 40 experimental units. Length and Place of Study: The research was implemented between September and November 2016, in a greenhouse of the Center of Science and Technology Agrifood, at the Federal University of Campina Grande (UFCG / CCTA), Campus of Pombal-PB, Brazil. Methods: Doses of 0, 75, 150, 225 and 300 mg L-1 of silicon and the irrigation slides of 50 and 100% of real evapotranspiration - ETr were used, which were obtained by weighing the pots daily in order to keep the weight close to the field capacity. Results: The use of 50% level of the ETr provides reductions of 5.58; 7.92 and 6.84% of fluorescence in the initial, maximum and quantum yield of the photosystem. The fresh and dry mass of the stem presented the maximum productivity (140.8 and 48.1 g) in the plants irrigated with 100% Etr and treated with doses of 106 and 110 mg L-1 of Si. Conclusion: The fluorescence and biomass of the eggplant plants is reduced with the decrease in irrigation level; while the application of silicon does not result in increment in the fluorescence and dry mass of the leaf. The 100% irrigation level of the ETr associated with the application of 108 mg L-1 of silicon resulted in the best results in stem mass accumulation.

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“…Para tanto, determinou-se o peso dos vasos na capacidade de campo (P cc ) a partir da saturação por capilaridade, seguida de drenagem até peso constante, sendo considerado o P cc , e diariamente procedia-se à pesagem do peso atual (P a ) de cada vaso. Com esses dados e usando-se a equação 1, determinou-se a ETr com a divisão da subtração desses valores pela área do vaso (JESUS et al, 2018). As plantas que recebiam 50% da ETr recebiam 50% do volume de água aplicado nas plantas sob lâmina de 100% da ETr.…”

Section: Methodsunclassified

Adubação Silicatada Como Atenuante Do Estresse Hídrico No Crescimento E Trocas Gasosas Do Alface

Fátima

Jesus

Guerrero

et al. 2019

Reveng

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A insuficiencia hidrica consiste em um dos principais fatores limitantes da agricultura nas regiões semiaridas. Com isso, o emprego de tecnologias que permitam amenizar os efeitos ocasionados por esse fator se torna essencial para que ocorra a expansão da agricultura nessa região. Diante disso, objetivou-se estudar o crescimento e as trocas gasosas de plantas de alface sob adubação silicatada e estresse hídrico. O experimento foi em casa de vegetação, usando-se o delineamento experimental de blocos ao acaso com quatro repetições, em esquema fatorial 5x2, com cinco doses de silício (0, 50, 100, 150 e 200 mg L-1) e duas lâminas de irrigação [50 e 100% da evapotranspiração real (ETr) baseada em lisimetria de pesagem], com quatro repetições, totalizando 40 unidades experimentais. A aplicação do Si foi feita via foliar, utilizando-se produto comercial composto por 0,75% de Si e 0,15% de Molibdênio. As doses de silício influenciaram nas variáveis fisiológicas das plantas sob estresse hídrico, destacando-se a dose estimada de 125 mg L-1. A aplicação da dose estimada de 109 mg L-1 de Si apresentou benefícios para as plantas submetidas a lâmina de 100% da ETr nas variáveis morfológicas estudadas. A lâmina de irrigação de 100% da ETr proporcionou maior crescimento das plantas de alface em relação às plantas irrigadas com a lâmina de 50% da ETr.

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Growth and gas exchanges of arugula plants under silicon fertilization and water restriction

Cited by 14 publications

References 12 publications

Physiological responses of beet plants irrigated with saline water and silicon application

Physiological responses of beet plants irrigated with saline water and silicon application

Fluorescence and Growth of Eggplant under Irrigation Levels and Silicon Doses

Adubação Silicatada Como Atenuante Do Estresse Hídrico No Crescimento E Trocas Gasosas Do Alface

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