Performance of RR soybean submitted to postemergence application of glyphosate with a foliar elicitor product

Constantin, Jamil; Braz, Guilherme Braga Pereira; Oliveira, Rubem Silvério de; Andrade, Christiano Lima Lobo de; Pereira, Bruno César Silva; Machado, Fellipe Goulart

doi:10.1590/1808-1657000492019

Cited by 3 publications

(2 citation statements)

References 21 publications

(27 reference statements)

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“…Research by J. Constantin et al (2020) established that the introduction of herbicides can reduce the photosynthetic activity of soybeans, in particular, due to a decrease in the amount of chlorophyll in the leaves and an increase in the concentration of reagents herbicide application). The actual weediness of crops was evaluated in points according to the visual-quantitative method of A.G. Maltsev.…”

Section: Introductionmentioning

confidence: 99%

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2023

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Section: Introductionmentioning

confidence: 99%

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2023

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Section: Introductionmentioning

confidence: 99%

Herbicide influence on the agrocenose of soy and its photosynthetic activity in the western Forest Steppe of Ukraine

Shuvar,

Korpita

2023

UBSRAS

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The use of herbicides can significantly affect the processes of plant photosynthesis, as it leads to inhibition of pigment production, impairs the transport of electrons in the respiratory chain and carbon fixation. The purpose of the study is to determine the effect of herbicide application on weediness and photosynthetic activity of soybeans. On the basis of a field study in the conditions of the Educational and Scientific Center of the Lviv National University of Nature Management, the dependence of soybean yield on the level of weediness of the culture was established. The highest yield of soybeans - 29.0 t/ha was obtained in the application of the herbicide Primekstra TZ Gold 500 SC c.s. (4.5 l/ha), the smallest – 27.3 t/ha among the experimental variants was obtained with the post-emergence application of the herbicide Pulsar s.c. (1 l/ha). Application of herbicide Primekstra TZ Gold 500 SC c.s. did not affect the intensity of photosynthesis, and the number of pigments in soybean leaves was not significantly different from the indicator in the control. The use of drugs Kommand k.e. and Pulsar s.c. led to a slight decrease in the number of pigments in the first days after application and their gradual stabilization. Use of the herbicide Concur c.s. had the effect of weakening photosynthetic activity and reducing the number of pigments. This indicates that the active substance metribuzin is not absolutely selective with regard to the effect on soybean plants, that is, in the case of its use, there is a probability of suppressing the culture. The practical significance of the obtained results lies in revealing the possibilities for choosing effective herbicides with increased selective phytotoxicity, which provide effective control of the number of weeds with a minimal probability of a negative impact of herbicides on the soybean agrocenosis

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Agronomic Performance of RR® Soybean Submitted to Glyphosate Application Associated with a Product Based on Bacillus subtilis

et al. 2022

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Despite the great benefits arising from the adoption of Roundup Ready® (RR®) soybean, there are reports about the lack of selectivity of glyphosate for this crop. The use of growth-promoting microorganisms can help attenuate the injuries caused by herbicides. The objective of this work was to evaluate the agronomic performance of RR® soybean submitted to the post-emergence application of glyphosate both isolated and in association with Bacillus subtilis. The experiment was carried out in a completely randomized block design, with four replications. The treatments consisted of the post-emergence applications of glyphosate (1296 g a.i. ha−1), glyphosate (2592 g a.i. ha−1), glyphosate/glyphosate (1296/1296 g a.i. ha−1), glyphosate + B. subtilis BV02 (1296 + 42 g a.i. ha−1), glyphosate + B. subtilis BV02 (2592 + 42 g a.i. ha−1), and glyphosate + B. subtilis BV02/glyphosate + B. subtilis BV02 (1296 + 42/1296 + 42 g a.i. ha−1). The application of glyphosate (2592 g a.i. ha−1) and the sequential application of glyphosate provides higher levels of intoxication. The association of B. subtilis BV02 with glyphosate (2592 g a.i. ha−1) prevented losses in the values of relative chlorophyll a and b and the total chlorophyll index. The soybean yield was reduced when the plants were submitted to a sequential application of glyphosate.

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Performance of RR soybean submitted to postemergence application of glyphosate with a foliar elicitor product

Cited by 3 publications

References 21 publications

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Herbicide influence on the agrocenose of soy and its photosynthetic activity in the western Forest Steppe of Ukraine

Agronomic Performance of RR® Soybean Submitted to Glyphosate Application Associated with a Product Based on Bacillus subtilis

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