Fungicidas no manejo da ferrugem da soja, processos fisiológicos e produtividade da cultura

Alves, Viviane Moreira; Juliatti, Fernando Cézar

doi:10.1590/0100-5405/167203

Cited by 17 publications

(15 citation statements)

References 11 publications

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“…In a study conducted by Alves and Juliatti (2018), they confirmed that the combination of the same compounds used in this study (Piraclostrobin + Fluxapiroxade + Prothioconazole + Trifloxystrobin + Cyproconazole + Picoxystrobin) provided ample control of pathogens when added with mancozeb. In this study it was not necessary to use mancozeb for the whole pathogen population to be contained.…”

Section: Journal Of Agricultural Studiessupporting

confidence: 76%

Evaluation of Fungicides to Control Asian Rust and Anthracnose in Soybean

Pereira

Martins

Lima

et al. 2019

JAS

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Soybean (Glicine max L.) is one of the most important crops from the economic standpoint for Brazil and due to the favorable climate for the development of fungal diseases, requires special needs. The fungal diseases with the greatest economic impact on Brazilian culture are Asian rust, caused by the fungus Phakopsora pachyrhizi and Anthracnose, caused by Colletotrichum truncatum. Together, without proper control, they can be devastating. Fungicides represent a high cost to producers, however, necessary for productivity losses do not decrease production. In this way, obtaining a combination of fungicides that provides results for the control of the diseases, from the beginning of the infestation period, with a satisfactory cost benefit is of the utmost importance to Brazilian producers. The objective of this study was to evaluate the combination of six commercial fungicides (APROACH PRIMA®, SPHERE MAX®, FOX®, FUSÃO®, ELATUSTM and ORKESTRA) and sequential applications in the control of anthracnosis and asian rust at the soybean cultivar “Monsoy 5947 IPRO”; besides establishing the best cost benefit for the application of these fungicides. The results show that all evaluated treatments presented statistically significant result, and suggest the use of Orkestra®/Aproach Prima®/Sphere Max® fungicides in sequential applications for the control of Asian rust and anthracnose in the region of Assis Chateaubriant, Paraná, Brazil.

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Section: Journal Of Agricultural Studiessupporting

confidence: 76%

Evaluation of Fungicides to Control Asian Rust and Anthracnose in Soybean

Pereira

Martins

Lima

et al. 2019

JAS

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“…Products composed of mixtures of triazoles, strobilurins and carboxamides have been the most widely used, what has led to the emergence of resistant populations of P. pachyrhizi (Godoy 2012). However, it is important to know the effects of the application of protective fungicides, such as mancozeb, on the physiological processes of plants and in the absence of Asian soybean rust (Alves & Juliatti 2018).…”

Section: Abstract Resumomentioning

confidence: 99%

Effect of adding fungicide to mixtures of triazoles and strobilurins in the control of downy mildew and Asian soybean rust

Zuntini

Alvarez

Theodoro

et al. 2019

Pesqui. Agropecu. Trop.

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Fungicides used to control the Asian soybean rust are composed almost entirely of mixtures involving the systemic (triazoles) and meso-systemic (strobilurins) modes of action. However, to control the soybean downy mildew, only protective fungicides are available. The present study aimed to evaluate the effectiveness of fungicides with different modes of action in the control of downy mildew and Asian soybean rust. A field experiment was carried out in a randomized block design, with seven treatments [negative control; difenoconazole at V7 + (azoxystrobin + cyproconazole) at R2 and R5.1; (tebuconazole + carbendazim) at V7 + (azoxystrobin + tebuconazole) at R2 and R5.1; carbendazim and mancozeb at V7 + (azoxystrobin + tebuconazole) at R2 and R5.1; (tebuconazole + carbendazim) at V7 + mancozeb in V7 + (azoxystrobin + tebuconazole) at R2 and R5.1; (tebuconazole + carbendazim) at V7 + (azoxystrobin + tebuconazole) at R2 and R5.1 + mancozeb at R2 and R5.1; (tebuconazole + carbendazim) at V7 + azoxystrobin + tebuconazole at R2 and R5.1 + mancozeb at R2 and R5.1 + carbendazim at R5.1] and four replicates. The following variables were evaluated: disease severity based on diagrammatic scales, phytotoxicity, product effectiveness, defoliation, number of pods per plant, number of seeds per pod, 1,000-seed weight and yield. The treatments with mancozeb addition showed to be more efficient in reducing the severity of mildew and Asian soybean rust and defoliation, providing increased seed yields for the crop. For the soybean downy mildew, the treatments with addition of mancozeb to benzimidazole, strobilurins and triazoles were more efficient in reducing the severity and for the control.

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“…Rios et al (2010), when artificially inoculating soybean plants with P. pachyrhizi uredospore, observed reductions in the protective and healing effects of fungicides as the applications were performed farther from inoculation. Alves and Juliatti (2018) in a work with the application of mancozeb and systemic fungicides concluded that the effect of adding protective fungicides with systemic fungicides varied according to the interaction between these molecules. However, the applications made by Alves and Juliatti (2018) started when the plants were in the R1 stage, and, in general, the preventive applications of fungicides are more efficient in controlling rust compared to eradicating applications (AUGUSTI et al, 2014), and the protective fungicides, when applied under ideal conditions, remain on the leaves and inhibit the germination of spores in a range of hosts and in a non-specific way, acting in several fungal cell sites (REIS, 2014;ZAMBOLIM et al, 2008), therefore, being more efficient when applied preventively.…”

Section: Resultsmentioning

confidence: 99%

Fungicide management in the Asian soybean rust

Neto¹,

Souza

Bertoncello³

et al. 2021

R. Agrogeoambiental

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Asian soybean rust is the major crop disease and the management of the use of the fungicide is important for effective control. The objective of this work was to evaluate the management of fungicides with sequential applications to control Asian soybean rust. The experimental design used was a randomized block with four replications and eight treatments with different combinations of fungicides from the following chemical groups: triazole, strobilurin, carboxamide, and dithiocarbamate. The applications were carried out with backpack spray equipment at constant pressure (CO2) and a spray rate of 200 L ha-1. The severity of rust, the area under the disease progress curve, control efficiency, mass of 1,000 grains, and productivity were evaluated. The protective fungicide mancozeb, in mixtures with systemic fungicides, were more effective for the control of Asian soybean rust than the systemic fungicides applied without the protective fungicide.

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Fungicidas no manejo da ferrugem da soja, processos fisiológicos e produtividade da cultura

Cited by 17 publications

References 11 publications

Evaluation of Fungicides to Control Asian Rust and Anthracnose in Soybean

Evaluation of Fungicides to Control Asian Rust and Anthracnose in Soybean

Effect of adding fungicide to mixtures of triazoles and strobilurins in the control of downy mildew and Asian soybean rust

Fungicide management in the Asian soybean rust

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