Produção de feijão caupi em função da salinidade e regulador de crescimento

Oliveira, Francisco de Assis de; Medeiros, José Francismar de; Alves, Rita de Cássia; Lima, Luan Alves; Santos, S. T.; Régis, Lúcia R. de L.

doi:10.1590/1807-1929/agriambi.v19n11p1049-1056

Cited by 32 publications

(23 citation statements)

References 15 publications

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“…On the other hand, the results corroborate reports by several authors for different cultures, such as cowpea (Oliveira et al, 2015) and cotton (Ávila, Barizão, Gomes, Fedri, & Albrecht, 2010).…”

Section: Resultssupporting

confidence: 91%

“…These results demonstrate that the effects of the biostimulant may be modified or inhibited according to the environmental conditions, which was verified by Oliveira et al (2015).…”

Section: Resultssupporting

confidence: 71%

“…Stimulate ® , a product considered to be a plant growth promoter, is partially composed of phytohormones that act to mediate physiological processes (Garcia, Gazola, Merlin, Villas Boas, & Crusciol, 2009). In the literature, the use of this biostimulant has been reported to have several positive results on the growth and yield of crops, but most of the research has focused on grains and cereals (Garcia et al, 2009;Oliveira et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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<b>Gherkin cultivation in saline medium using seeds treated with a biostimulant

et al. 2018

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ABSTRACT. The objective of this study was to evaluate the effects of a biostimulant on gherkin seeds, cultivar Liso de Calcutá, under conditions of salt stress. A split-plot experimental design with five replications was used; the main plot was represented by two levels of irrigation water salinity (0.5 and 3.5 dS m -1 ), and the subplot was composed of five biostimulant doses applied as a seed treatment (0, 5, 10, 15, and 20 mL kg -1). The following variables were evaluated: the number of leaves; number of branches; length of the largest branch; leaf, stem, fruit and total dry matter; number of fruits; average fruit weight; and fruit production. The values of all analyzed variables decreased with an increase in irrigation water salinity regardless of the biostimulant dose, but in the absence of salt stress, biostimulant use led to an increase in the number of leaves and branches, the length of the largest branch and biomass accumulation. Biostimulation was not effective in reducing the effects of salinity on gherkin production, but it increased fruit production regardless of the salinity level.

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Section: Resultssupporting

confidence: 91%

“…These results demonstrate that the effects of the biostimulant may be modified or inhibited according to the environmental conditions, which was verified by Oliveira et al (2015).…”

Section: Resultssupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

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<b>Gherkin cultivation in saline medium using seeds treated with a biostimulant

et al. 2018

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“…The positive effect of Stimulate ® application on the germination speed has also been observed in soybean seeds (Moterle et al, 2011) and jeripape seeds (Prado Neto et al, 2007). Applying Stimulate ® in the production of soybean (Carvalho et al, 2013), bean (Abrantes et al, 2011), cowpea beans (Oliveira et al, 2015) and cotton (Silva et al, 2016) improved the vegetative development of these crops and increased the physicochemical quality of the grain, grain mass, yield and total dry biomass. These morphological aspects result from the physiological changes caused by the application of plant growth regulators and directly reflect the physiological quality of the seeds produced.…”

Section: Resultsmentioning

confidence: 87%

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

Boiago

Coelho

Fernandes

et al. 2019

Acta Sci. Biol. Sci.

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The application of plant growth regulators can manipulate the development of cultivated plants, and their physiological effects may be reflected in the physiological quality of the seeds. This study evaluated the effects of plant growth regulators (PGR) on the physiological quality of crambe seeds produced in the 2014 and 2015 harvests. During crop development, we applied two foliar sprayings of the following treatments: 1) control treatment with distilled water; 2) indole-3-acetic acid 100 mg L-1 (IAA); 3) 3-gibberellic acid P.A. 100 mg L-1 (GA3); 4) commercial PGR Stimulate® 6 mL L-1. The seeds were harvested and evaluated for water content, germination percentage and germination speed index (GSI), electrical conductivity and concentrations of leached Ca, Mg and K ions. Means were compared by Tukey´s and Dunnett tests (p<0.05). Applying Stimulate® increased the germination percentage and the germination speed index, while IAA application showed an opposite effect, increasing the electrical conductivity of crambe seeds. Calcium leaching decreased with IAA application, and all regulators reduced K leaching. We therefore infer that the application of plant growth regulators influences the physiological quality of crambe seeds.

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“…é uma das leguminosas mais consumidas nas regiões Norte e Nordeste do Brasil, representando uma importante fonte de proteína, energia, fibras e minerais, além de gerar emprego e renda para a população (OLIVEIRA et al, 2015).…”

Section: Introductionunclassified

Modelos De Determinação De Área Foliar Em Feijão Caupi

Oliveira¹,

Lima²,

Moreira³

et al. 2016

Nucleus

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RESUMO:O feijão caupi é uma das leguminosas mais consumidas nas regiões Norte e Nordeste do Brasil, representando uma importante fonte de proteína, energia, fibras e minerais. Com o objetivo de obter equações que, por meio de parâmetros lineares dimensionais das folhas, que permitam estimar a área foliar do feijão caupi, das cultivares BRS Potengi e BRS Tracuateua, foi conduzido um experimento na Universidade Federal Rural da Amazônia no Campus de Capitão Poço -PA. A área foliar foi determinada pelo método dos discos. Ajustaram-se modelos lineares, lineares sem intercepto, quadráticos, cúbicos, logarítmicos, exponenciais e potenciais entre área foliar e o comprimento, a largura e seus produtos (comprimento x largura), sendo eliminados os que apresentaram coeficiente de determinação menor do que 0,90. A estatística utilizada para avaliar o desempenho dos modelos foi o coeficiente de correlação de Pearson (r), o de determinação (R²), a raiz do quadrado médio do erro, o erro absoluto médio, o índice d de Willmott e o índice de Camargo e Sentelhas (CS). Para a cv BRS Potengi as medidas de área foliar podem ser estimadas com boa precisão a partir de equações quadráticas, cúbicas, potencial e linear e, para a cv BRS Tracuateua os modelos matemáticos de melhor desempenho foram o linear, quadrático e potencial.Palavras-chave: BRS Potengi. Coeficiente de determinação. Dimensões do limbo foliar. SUMMARY:The cowpea is one of the most widely consumed legumes in the North and Northeast of Brazil, representing an important source of protein, energy, fiber and minerals. In order to obtain equations through linear dimensions of leaves, to estimate the leaf area of the cowpea, the BRS Potengi and BRS Tracuateua, an experiment was conducted in the Amazonia Federal Rural Universidade in Capitão Poço Campus -PA. The leaf area was determined by the discs. Set up linear, linear without intercept, quadratic, cubic, logarithmic, exponential and potential between leaf area and length, width and the product (length x width), being eliminated those who had coefficient of determination lower than 0,90. The statistic used to evaluate the performance of the models was the Pearson correlation coefficient (r), the determination (R²), the root mean square error, mean absolute error, d index Willmott and Camargo index and Sentelhas (CS). For BRS Potengi the leaf area measurements can be estimated with good accuracy from quadratic equations, cubic, potential and linear and for BRS Tracuateua mathematical models to better performance were linear, quadratic and potential.Keywords: BRS Potengi. Determination coefficient. Dimensions of the leaf blade. INTRODUÇÃOO feijão caupi (Vigna unguiculata (L.) Walp.) é uma das leguminosas mais consumidas nas regiões Norte e Nordeste do Brasil, representando uma importante fonte de proteína, energia, fibras e minerais, além de gerar emprego e renda para a população (OLIVEIRA et al., 2015).No estado do Pará é cultivado, tradicionalmente, por pequenos agricultores no qual foi introduzido principalmente por imigran...

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Produção de feijão caupi em função da salinidade e regulador de crescimento

Cited by 32 publications

References 15 publications

<b>Gherkin cultivation in saline medium using seeds treated with a biostimulant

<b>Gherkin cultivation in saline medium using seeds treated with a biostimulant

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

Modelos De Determinação De Área Foliar Em Feijão Caupi

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