Bioestimulantes derivados de Ascophyllum nodosum associados ao glyphosate nas características agronômicas da soja RR

Andrade, Christiano Lima Lobo de; Silva, Alessandro Guerra da; Melo, Gabriel Bressiani; Ferreira, Ranier Vieira; Moura, Isabela Cristina Sousa; Siqueira, Gabriel Gonçalves Costa

doi:10.7824/rbh.v17i3.592

Cited by 12 publications

(15 citation statements)

References 13 publications

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“…Assim como ocorreu com o parâmetro massa fresca, a dose de 1000 mL.ha -1 de extratos de algas foi superior estatisticamente quando avaliou-se a massa seca total das plantas, atingindo um peso de 21,91 g. Em contrapartida a dose de 500 mL.ha -1 foi igual estatisticamente a testemunha que não recebeu a aplicação, tendo respecitvamente os pesos de 17,17 g e 16,67 g. Tal resultado encontra suporte em trabalho realizado por Andrade et al (2018) na cultura da soja, onde ao avaliar o uso de bioestimulantes à base de extratos de algas aplicados após a capina química com o herbicida glifosato e o seus efeitos em produtividade, notou-se incrementos significativos em número de vagens totais e em produtividade de grãos, mostrando o elevado potencial de redução de estresses abióticos e em promoção de crescimento dos extratos de algas da espécie Ascophyllum nodosum. Entretanto Galindo et al (2019) ao avaliar o efeito de extratos de algas na cultura do trigo irrigado não obteve incrementos significativos em produtividade, havendo apenas incrementos nas concentrações foliares de enxofre, manganês e clorofila, quando comparados com a testemunha.…”

Section: Tratamentosunclassified

Efeitos do fertilizante a base de extratos de algas marinhas no crescimento inicial do cafeeiro

Pedro¹,

Franco²,

Ribeiro³

et al. 2022

RSD

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A cultura do café é exigente nutricionalmente, assim sendo é fundamental buscar fertilizantes eficientes na disponibilização de nutrientes. O aumento na demanda pelo consumo de cafés especiais, rastreabilidade e práticas sustentáveis faz com que agricultores busquem novas tecnologias para a implantação de suas lavouras, sendo os produtos promotores de crescimento vegetal de origem natural bastante relevantes do ponto de vista ambiental, em especial aqueles à base de extratos de algas, entretanto é necessário avaliar sua eficiência agronômica em diferentes culturas. Nesse sentido objetivou-se avaliar o efeito do extrato de algas da espécie Ascophyllum nodosum no crescimento inicial dos cafeeiros. A pesquisa foi realizada em Cordislândia-MG, de maneira direcionada com três tratamentos aplicados via foliar com pulverizador manual de 5 L, utilizando diferentes doses de um fertilizante à base de extratos de algas, sendo: T1 – 0 testemunha, T2 – 500 mLha-1 (do produto comercial) e T3 –1000 mLha-1 (do produto comercial), aplicados 4 vezes, com intervalo de 40 dias entre as aplicações. O experimento foi instalado em Delineamento em Blocos Casualizados (DBC), contendo 3 tratamentos e 7 repetições, onde cada parcela foi constituída por 8 mudas de café, totalizando 21 unidades experimentais. Foram avaliados os parâmetros: índice de área foliar, comprimento da parte aérea, comprimento do sistema radicular, diâmetro do caule, massa fresca total, massa seca total e a relação do sistema radicular com parte aérea. Os tratamentos que receberam as aplicações foliares dos extratos líquidos comerciais da alga Ascophyllum nodosum na dose de 1000 mL.ha-1 obtiveram incrementos significativos em comprimento de parte aérea, índice de área foliar, massa fresca total, massa seca total e relação do sistema radicular com parte aérea, diferindo estatisticamente do tratamento controle e do tratamento 2, onde a dose aplicada foi de 500 mL.ha-1.

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Section: Tratamentosunclassified

Efeitos do fertilizante a base de extratos de algas marinhas no crescimento inicial do cafeeiro

Pedro¹,

Franco²,

Ribeiro³

et al. 2022

RSD

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“…The levels and proportions of hormones in the composition of growth regulators influence the efficiency of these in the plant physiology, also as in carbon allocation (Castro and Vieira, 2001;Andrade et al, 2018), which may explain the influence only of the observed light radiation availability and production of biomass and essential oil. The ability to grow rapidly when shaded is a mechanism of acclimatization of the plants with a strategy to escape shading, can be attributed to a greater investment in cell elongation (Osunkoya and Ash, 1991;Moraes Neto et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

Different levels of irradiance and plant regulators modify the leaf structure and essential oil production of Lippia origanoides H.B.K (Verbenaceae)

de,

Mielke,

et al. 2023

Afr. J. Plant Sci.

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The quality and quantity of secondary metabolites produced by plants can be influenced by biotic and abiotic factors, since the biochemical and physiological processes that coordinate the synthesis of these compounds are influenced by these. Plant regulators can also interfere with plant growth and terpene biosynthesis in aromatic species, which is why they are widely used in agriculture. Lippia origanoides H.B.K is an aromatic shrub that has glandular trichomes on the leaf, which secrete and accumulate essential oil used in the production of culinary seasonings and in the cosmetic and pharmaceutical industry. The objective of this research was to evaluate the effects of plant regulators associated with different levels of light availability in L. origanoides exposed to levels of 100, 50, 35 and 25% of irradiance. The increase in irradiance in plants treated with plant regulator caused changes in the structure and leaf dry biomass, density of glandular trichomes and essential oil content in the 100% full sun treatment. The treatments did not influence the chemical profile of the essential oil, which presented thymol as the major component. However, the application of bioregulators in full sun increased the production of essential oil demonstrating an excellent option for increasing the production.

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“…Even if it is a "RR" soybean cultivar, physiological damage caused by the application of glyphosate may occur. The effects will vary according to the cultivar, dose and formulation of the herbicide, environmental conditions at the time and after application (Andrade et al, 2018;Andrade et al, 2020). According to Andrade et al (2018), the biofertilizer is used to minimize these effects, as it promotes plant growth indirectly and assists the growth of meristems in the plant, however, this was not evidenced on the experiment.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, there are studies, aiming the reduction of the phytotoxic effects, using some products such as foliar fertilizers or biofertilizers in association with the herbicide (Du Jardin, 2015; Andrade et al, 2018;Andrade et al, 2020). These biofertilizers or biostimulants have varied compositions, usually containing amino acids such as L. glutamic acid, which can indirectly reduce oxidative stress effects, as they are a precursor to other amino acids, such as arginine and proline (Du Jardin, 2015;Andrade et al, 2018). These amino acids are correlate with the reduction of stress in the plant, with proline being an amino acid also used in the biosynthetic precursor rout of the chlorophyll molecule (Sharma et al, 2012;Povero et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

‘BMX Ativa’ soybean responses after application of biofertilizer associated or not with glyphosate

Galon

Babinski

Forte

et al. 2021

Agraria

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Even with the development of glyphosate-resistant soybean, there are cases in which harmful effects of intoxication occur, especially when the herbicide is applied in mixture with other products. The objective of this work was to verify the efficiency of biofertilizer as a glyphosate stress reducer in the soybean "BMX Ativa". The experiment was installed in a randomized block design, in a 3 × 5 + 1 factorial scheme, with four replications. In factor A, soybean development stages (V4, V8 and V4 + V8) were allocated, and in factor B the application of 0.1 L ha-1 of biofertilizer, 1,080 and 2,160 g ha-1 of a.e. of glyphosate, applied in isolated mode and/or mix in tank, plus one control without application as an additional treatment. The evaluated variables were phytointoxication, number of grains per plant, number of pods per plant, thousand grains mass and soybean grain yield. The application of double the dose of glyphosate (2,160 g ha-1) alone or in mixture with the biofertilizer in stages V4, V8 and V4 + V8 caused visual injuries to soybean 'BMX Ativa' until 28 days after application, but without affect the productive characteristics of the crop. The biofertilizer did not affect soybean plants and neither mitigate the negative effect of the highest dose of glyphosate.

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Bioestimulantes derivados de Ascophyllum nodosum associados ao glyphosate nas características agronômicas da soja RR

Cited by 12 publications

References 13 publications

Efeitos do fertilizante a base de extratos de algas marinhas no crescimento inicial do cafeeiro

Efeitos do fertilizante a base de extratos de algas marinhas no crescimento inicial do cafeeiro

Different levels of irradiance and plant regulators modify the leaf structure and essential oil production of Lippia origanoides H.B.K (Verbenaceae)

‘BMX Ativa’ soybean responses after application of biofertilizer associated or not with glyphosate

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