CHEMICAL CONTROL OF Conyza canadensis (L.), IN MIXTURES OF HERBICIDES WITH GLYPHOSATE IN COFFEE CROP

Silva, Carlos Alberto da; Miranda, Gustavo Rabelo Botrel; Alves, Alberto Donizete; Goulart, Roseli dos Reis

doi:10.25186/cs.v13i2.1430

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…This was confirmed in the present experiment when the positioning of a systemic product in the first application (chlorimuron + glyphosate and glyphosate alone) occurred; longer control was obtained than that in the saflufenacil + glyphosate contact product treatment application. Silva et al (2018) evaluated the effectiveness of herbicide control in Conyza canadensis using glyphosate + saflufenacil (1440 g a.i. ha -¹ + 56 g a.i.…”

Section: Resultsmentioning

confidence: 99%

Management strategies for Anredera cordifolia in coffee culture

Silva,

Coeti,

Ferrari

et al. 2023

Rev. bras. eng. agríc. ambient.

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Coffee plantations installed at high altitudes and near forested areas have been highly infested with Anredera cordifolia. The objective of this work was to evaluate the effectiveness of different pre- and post-emergence herbicide treatments on A. cordifolia after mechanical mowing. A field experiment was carried out in a coffee plantation with natural infestation of A. cordifolia in a completely randomized design with a split-plot scheme and four replicates, in which the main plot an herbicides application and the subplot was the days after the initial application (DAI). The treatments were as follows: saflufenacil + glyphosate (70 + 960 g a.i. ha-1); chlorimuron + glyphosate (80 + 960 g a.i. ha-1); metsulfuron + glyphosate (6 + 960 g a.i. ha-1); flumioxazin + glyphosate (25 + 960 g a.i. ha-1), and glyphosate (960 g a.i. ha-1); with sequential application of glyphosate (960 g a.i. ha-1); glyphosate + indaziflam (960 + 75 g a.i. ha-1); indaziflam (75 g a.i. ha-1); and a control without herbicide application. Mechanical control, followed by the application of the treatments flumioxazin + glyphosate and metsulfuron + glyphosate in the first application and sequential application of indaziflam, proved to be effective. Control of this weed should be based on the removal of its plant residues from the field to reduce the regrowth and germination of aerial tubers.

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Section: Resultsmentioning

confidence: 99%

Management strategies for Anredera cordifolia in coffee culture

Silva,

Coeti,

Ferrari

et al. 2023

Rev. bras. eng. agríc. ambient.

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“…The intensity of damage caused by weeds is influenced by the competitive potential of the plants (Silva et al, 2018). The predominance of species in the Poaceae and Asteraceae families in the evaluations can be explained by the interactions between climatic conditions and the characteristics related to the biology of the plants.…”

Section: Resultsmentioning

confidence: 99%

Phytosociology of weeds on Cerrado Mineiro coffee growing farms

Rodrigues¹,

Carvalho²,

Gonçalves³

et al. 2022

Advances in Weed Science

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Background: Phytosociological surveys of weeds in agricultural regions, such as the coffee growing Cerrado Mineiro Denomination, are essential for understanding the predominant species in a cultivation area.Objective: This study aimed to determine the predominant weed species in coffee crops in Cerrado Mineiro through phytosociological surveys during two periods of the year. Methods: 26 coffee farms in 12 municipalities within the Cerrado Mineiro Denomination of Origin of were visited. The inventory square method was used for the phytosociological surveys. In each area, 40 m 2 was evaluated and divided into two study periods (summer and winter). Calculations of the variables were performed using the following data: frequency, density, abundance, importance value index, similarity coefficient, rarefaction curve, Shannon index, and hierarchical grouping analysis using Jaccard's similarity. Results: In the summer (rainy period), 54 species from 16 families were found, with Poaceae, Asteraceae, and Amaranthaceae predominating. In winter (dry season), 56 species from 16 families were found, predominantly Asteraceae, Poaceae, and Brassicaceae. There was a predominance of 17 and 16 species, with similarity levels (Jaccard) of 45.58% and 40.78% for summer and winter, respectively. Conclusions: The weed community in the Cerrado Mineiro coffee plantation is dominated by two main families, Poacaeae and Asteraceae, with Eleusine indica (summer) and Conyza spp. (winter) being the species with the highest importance values.

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“…In this way, C. benghalensis finds favorable conditions for its full development, causing strong interference in the coffee crops, especially in young coffee plantation (Dias et al, 2005). This infestation can be even more damaging when it is established in the period from October to March (stage of grains filling) and in plantation in formation when located in the projection of the coffee canopy (Silva et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

CHEMICAL CONTROL STRATEGIES OF Commelina benghalensis IN COFFEE CROP

Silva

Barbosa

Ferrari

et al. 2019

C.Sci.

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<p> The present study aims to evaluate the control of C. benghalensis by herbicides applied in post-emergence and in pre-emergence sequentially in the infesting weed in the coffee crop. Two field experiments were carried out in a coffee crop, with natural infestation of C. benghalensis, the experimental design of both was completely randomized with 4 replicates. The first experiment, involving a single application of herbicides in post-emergence presented the following treatments: (1) saflufenacil (70 g i.a. ha-1); (2) glufosinate (400 g i.a. ha-1); (3) carfentrazone (20 g i.a. ha-1); (4) flumioxazin (120 g i.a. ha-1); (5) metsulfuron (6 g i.a. ha-1), and (6) witness (without application of herbicide). In the second experiment, the treatments were: (1) saflufenacil (70 g i.a. ha-1); (2) carfentrazone (20 g i.a. ha-1); (3) flumioxazin (120 g i.a. ha-1); (4) metsulfuron (6 g i.a. ha-1), all these treatments with a sequence of indaziflam (75 g i.a. ha-1), at 21 days after the application of the treatments (DAT) of pos-emerging; (5) Witness (without application of herbicides). In the first experiment the herbicides safluenacil and flumioxazin presented the best percentages of control in post-emergence with 90 and 85.25% respectively, at 7 DAT, keeping the control superior to 80% at 21 DAT. In the second experiment, the treatments saflufenacil and flumioxazin with indaziflam sequential, presented control of 80% and 82.5% respectively at 28DAA (Days After Application). The herbicides saflufenacil and fluxioxazin represent an option for the control of C. benghalensis in post-emergence and favor the performance of the sequentially applied indaziflam herbicide. </p>

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CHEMICAL CONTROL OF Conyza canadensis (L.), IN MIXTURES OF HERBICIDES WITH GLYPHOSATE IN COFFEE CROP

Cited by 5 publications

References 13 publications

Management strategies for Anredera cordifolia in coffee culture

Management strategies for Anredera cordifolia in coffee culture

Phytosociology of weeds on Cerrado Mineiro coffee growing farms

CHEMICAL CONTROL STRATEGIES OF Commelina benghalensis IN COFFEE CROP

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