Development of RR soybean in function of glyphosate doses and Bradyrhizobium inoculation

Bossolani, João William; Poloni, Nádia Maria; Lazarini, Edson; Bettiol, João Víctor Trombeta; Filho, João Alberto Fischer; Negrisoli, Matheus Mereb

doi:10.1590/1807-1929/agriambi.v22n12p854-858

Cited by 5 publications

(5 citation statements)

References 18 publications

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“…Plant height is directly influenced by the amount of nitrogen and other nutrients absorbed through the root system, allowing greater photosynthetic capacity for the crop (Hungria, 2011). In this case, inoculation with B. japonicum directly influences the increase in the height of soybean plants (Bossolani et al, 2018). This result supports those described by Bizarro (2008), in which inoculant application increased the SDW of soybean plants.…”

Section: E Esupporting

confidence: 91%

Resposta do cultivo de soja a fixação de nitrogênio em solo contaminado com cobre

Andreola

Stumm²,

Fontanive³

et al. 2022

Semina: Ciênc. Agrár.

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O cobre (Cu) é um metal pesado que nas doses adequadas é essencial para as plantas, mas em doses elevadas potencialmente pode ser tóxico às espécies agrícolas. Contudo, a utilização de bactérias fixadoras de nitrogênio pode ser uma alternativa para o cultivo de soja em área contaminado com cobre. A tolerância ao excesso de Cu pelas raízes se dá com a imobilização do Cu na parede celular, exclusão ou restrição da absorção, compartimentalização no vacúolo com complexos solúveis. Objetivou-se neste trabalho determinar a influência do uso de bactérias fixadoras no desenvolvimento, resposta fisiológica e na bioacumulação de cobre na soja cultivada em solo contaminado. O delineamento experimental foi inteiramente casualizado em arranjo fatorial 7 x 2, sendo, sete doses de cobre (0, 80, 160, 240, 320, 400 e 480 mg de cobre kg -1 de solo), duas inoculações (com Bradyrhizobium japonicum e sem inoculação - testemunha), com 8 repetições. Avaliou-se a altura da parte aérea, diâmetro do colo, número de grãos por planta, massa seca da parte aérea e sistema radicular, área foliar, área superficial específica de raízes, teores de cobre na parte aérea, radicular e grãos, índice de translocação e tolerância, fator de bioconcentração, coeficiente de bioacumulação, parâmetros da clorofila, número e massa seca de nódulos. A inoculação com B. japonicum proporciona incrementos nos caracteres fisiológicos, na altura de planta, área superficial específica de raízes e no rendimento de grãos da soja em solo contaminado com cobre. A soja apresenta baixa eficiência em translocar o cobre para parte aérea, porém seu teor no grão inviabiliza sua recomendação de cultivo em solo contaminado com este metal.

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Section: E Esupporting

confidence: 91%

Resposta do cultivo de soja a fixação de nitrogênio em solo contaminado com cobre

Andreola

Stumm²,

Fontanive³

et al. 2022

Semina: Ciênc. Agrár.

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“…The relationship between herbicide application and symbiotic nitrogen fixation may have different effects depending on the crop variety, as well as the symbiotic strains used. Bossolani et al [65] evaluated the effect of glyphosate doses on Bradyrhizobium strains (Bradyrhizobium elkanii-SEMIA 5019-and Bradyrhizobium japonicum-SEMIA 5079) and biological nitrogen fixation in soybean plants (BMX Potência RR). The authors reported that the inoculated RR soybean did not present alteration in the leaf chlorophyll index by the application of glyphosate, and regardless of the Inoculation, the soybean plants were able to recover from the application of glyphosate, not impairing their development.…”

Section: Change In the Rate Of Nitrogen Fixation By Symbiotic Bacteriamentioning

confidence: 99%

Herbicides versus Nitrogen Cycle: Assessing the Trade-Offs for Soil Integrity and Crop Yield—An In-Depth Systematic Review

Brochado,

Silva,

Lima

et al. 2023

Nitrogen

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The interaction of herbicides in the nitrogen cycle and their consequences on soil health and agricultural production are essential topics in agronomic research. In this systematic review article, we have synthesized recent studies on this subject. The results revealed that the indiscriminate use of herbicides can have negative effects on vital processes in the nitrogen cycle, such as reduced enzymatic activity and microbial respiration. Moreover, herbicides alter the soil microbial composition, affecting nitrogen cycling-related activities. Symbiotic nitrogen fixation is also impaired, resulting in a reduction in the population of nitrogen-fixing bacteria and a decrease in the availability of this nutrient in the soil. These effects compromise soil fertility and the release of nitrogen to plants. Therefore, sustainable agricultural practices must be adopted, considering nitrogen cycling efficiency and the preservation of soil and natural resources. This understanding is crucial for guiding appropriate management strategies aimed at minimizing the negative effects of herbicides on the nitrogen cycle and ensuring soil health and agricultural productivity.

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“…At 28 DAT, in general, the use of glyphosate plus biofertilizer or isolated glyphosate, even in high doses, caused insignificant intoxication, thus showing the plant's ability to recover. According to Bossolani et al (2018), this is because the isomorphism of the EPSPs enzyme is not altered by the product, occurring a decrease in the physiological activity of the plant after application, which recovers in a few days. Forte et al (2019), applied 1,080 and 2,160 g ha -1 of glyphosate to the cultivar 'BMX Ativa' with 3 trifoliate leaves and they did not observe intoxication at 28 DAT, thus confirming the recovery capacity of soybean, a result similar to the present study.…”

Section: Resultsmentioning

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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Development of RR soybean in function of glyphosate doses and Bradyrhizobium inoculation

Cited by 5 publications

References 18 publications

Resposta do cultivo de soja a fixação de nitrogênio em solo contaminado com cobre

Resposta do cultivo de soja a fixação de nitrogênio em solo contaminado com cobre

Herbicides versus Nitrogen Cycle: Assessing the Trade-Offs for Soil Integrity and Crop Yield—An In-Depth Systematic Review

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

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