Ação De Bioestimulante No Desenvolvimento Inicial Do Milho Doce Submetido Ao Estresse Salino

Cunha, Rafaela Cristina da; Oliveira, Francisco de Assis de; Souza, Maria Williane de Lima; Medeiros, José Francismar de; Lima, Luan Alves; Oliveira, Mychelle Karla Teixeira de

doi:10.15809/irriga.2016v1n01p191-204

Cited by 10 publications

(8 citation statements)

References 15 publications

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“…However, in plants irrigated with high-salinity water, a quadratic behavior was observed, and highest dry matter accumulation (23.31 mg) was found at phytohormone concentration of 27.6 µM L -1 ( Figure 2B). Cunha et al (2016) andSouza Neta et al (2018) observed that the use of the biostimulant Stimulate®, composed of a mixture of substances [0.005% of indolebutyric acid (auxin), 0.009% of kinetin (cytokinin) and 0.005% of gibberellic acid (gibberellin)], was not efficient at mitigating the effect of salinity on sweet corn and gherkin, and found benefits only in plants grown in the absence of salt stress. The opposite was observed in the present study, which may be related to the low concentration of phytohormones in the biostimulant evaluated by these authors.…”

Section: Resultsmentioning

confidence: 99%

Exogenous application of phytohormones mitigates the effect of salt stress on Carica papaya plants

Sá

Brito

Silva

et al. 2020

Rev. bras. eng. agríc. ambient.

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The salinity has complex effects on the physiological, nutritional and hormonal interactions of plants. This study aimed to evaluate the mitigating action of exogenous application of different types and concentrations of phytohormones on Carica papaya under salt stress. The experiment was conducted in greenhouse, using a randomized block design with treatments formed from a 2 x 3 x 5 factorial scheme, relative to two concentrations of salts in the irrigation water (0.6 and 2.4 dS m-1), three types of phytohormones [Auxin = indole-3-acetic acid; Cytokinin = CPPU (N-(2-chloro-pyridyl)-N-phenylurea) and Gibberellin = gibberellic acid(AG3)], and five concentrations of the phytohormone (0, 12.5, 25.0, 37.5 and 50.0 µM L-1), with three repetitions, totaling 90 plots, and the experimental unit consisted of six plants. C. papaya cv. ‘Sunrise Solo’ was grown on polyethylene trays of 162 cells, with capacity for 50 mL. The plants were evaluated for survival percentage and phytomass accumulation until 25 days after sowing. Increase in irrigation water salinity has deleterious effects on C. papaya plants regardless of the application of phytohormones. Exogenous application of gibberellin has a positive effect in mitigating salt stress on C. papaya plants, greater than the effects of auxins and cytokinins. Exogenous application of gibberellin and auxin at concentration of 37.5 µM L-1 mitigates the effects of salinity on C. papaya plants. Exogenous application of cytokinin at concentrations of 12.5 to 50.0 µM L-1 is not viable for C. papaya plants.

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Section: Resultsmentioning

confidence: 99%

Exogenous application of phytohormones mitigates the effect of salt stress on Carica papaya plants

Sá

Brito

Silva

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…As plantas em estresse salino limitam o seu crescimento, pois, a pressão osmótica do meio aumenta com a presença dos sais e, consequentemente, haverá uma redução da água disponível para o vegetal, afetando a divisão celular e o alongamento das células (OLIVEIRA et al, 2014). Cunha et al (2016) observaram que a altura de plantas de milho foi afetada negativamente pela água de maior salinidade. Resultados similares ao do presente trabalho também foram obtidos por Dias et al (2017), que verificaram que o crescimento em altura das plantas de algodão foi prejudicado com o aumento da condutividade elétrica da água de irrigação em diferentes épocas de avaliação.…”

Section: Resultsunclassified

“…De acordo com Prisco e Gomes Filho (2010), essas alterações morfológicas ocorrem em razão do desbalanço hídrico, nutricional e hormonal, causado pelo excesso de sais solúveis presentes na água de irrigação. Cunha et al (2016) em trabalhos com plantas de milho doce, averiguaram que com o aumento da condutividade elétrica da água houve redução no diâmetro caulinar. No entanto, contrariando esse resultado, Sousa et al (2012) verificaram que os níveis crescentes de sais da água de irrigação não exerceram efeitos significativos sobre o diâmetro do colmo em plantas de milho.…”

Section: Resultsunclassified

Estresse Salino E Cobertura Vegetal Morta Na Cultura Do Milho

Sousa

Rodrigues

Sales

et al. 2019

RBAI

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Objetivou-se avaliar a influência da salinidade da água de irrigação e da cobertura vegetal morta no crescimento inicial da cultura do milho. O experimento foi conduzido no período de setembro a outubro de 2017 na Fazenda Experimental Piroás, da Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Redenção-CE. O delineamento experimental foi inteiramente casualizado (DIC) em esquema fatorial 5 x 2, correspondendo a cinco níveis de salinidade da água de irrigação (1,0; 2,0; 3,0; 4,0 e 5,0 dS m -1 ) versus dois tipos de cobertura (presença e ausência de cobertura vegetal morta), com 5 repetições. As variáveis analisadas foram o número de folhas, a altura de planta, o diâmetro do caule, a área foliar, o comprimento da raiz, a massa seca da parte aérea, a massa seca da raiz e a massa seca total. O uso da cobertura vegetal morta exerce efeito atenuador, promovendo aumento no comprimento de raiz e possibilita maior número de folhas de plantas de milho irrigadas com água de baixa e alta salinidade. A altura de planta, a área foliar e o diâmetro do caule reduziram quando as plantas de milho foram irrigadas com água salina. A salinidade da água de irrigação afeta a produção da massa seca da parte aérea, a massa seca da raiz e a massa seca total das plantas de milho.

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“…With the increase in its exploitation by producers, the adoption of new technologies such as the use of biostimulants, stands as a good option to optimize production in different crops (Cunha et al, 2016). The application of biostimulants can morphologically change the plant organs, in which their growth and development are inhibited, in a way that meristematic activity is influenced, resulting in a more uniform formation and harvest of the seeds (Jesus Rodrigues et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Maize Yield Under Fertilization With Bio-Stimulants, Sulfur, and Zinc in the State of Paraíba, Brazil

Silva¹,

Silva²,

Silva³

et al. 2022

JAS

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Maize (Zea mays) is a cereal widely used in human and animal feeding worldwide, with great socioeconomic importance. This study aimed to evaluate the growth, productivity, and absorption of macro and micronutrients of maize under the application of biostimulant, sulfur, and zinc in a Gleisolo Háplico soil in a microclimate region of the semiarid state of Paraíba, Brazil. The experiment was carried out in a complete randomized block design, a 2x2x2 factorial scheme with eight treatments, and four replications was used. The first factor corresponded to treatment with biostimulant (Presence and absence); the second to sulfur (Presence and absence); and the latter to zinc (Presence and absence). Growth, yield, and macro and micronutrient absorption data were evaluated. Data were submitted to analysis of variance and the means compared by the Tukey test at 5% probability. The number of rows per ear and ear diameter responded positively when the biostimulant was used. Maize under foliar fertilization with zinc nitrate did not show yield increase. The application of sulfur promoted an increase in almost all variables, including yield. The combined application of the three products influenced only the number of rows per ear. The application of sulfur separated or together with biostimulant provided an increase in the absorption of some nutrients by the leaf such as copper, N and K. As a result of fertilization with sulfur, which provided an increase in leaf absorption, mainly of N, also promoted a significant increase in all student variables, including grain productivity.

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Ação De Bioestimulante No Desenvolvimento Inicial Do Milho Doce Submetido Ao Estresse Salino

Cited by 10 publications

References 15 publications

Exogenous application of phytohormones mitigates the effect of salt stress on Carica papaya plants

Exogenous application of phytohormones mitigates the effect of salt stress on Carica papaya plants

Estresse Salino E Cobertura Vegetal Morta Na Cultura Do Milho

Maize Yield Under Fertilization With Bio-Stimulants, Sulfur, and Zinc in the State of Paraíba, Brazil

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