First report of multiple resistance of goosegrass to herbicides in Brazil

Correia, Núbia M.; Araújo, Lucas da S.; Bueno Júnior, Roni A.

doi:10.51694/AdvWeedSci/2022;40:00012

Brasil

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RESEARCH ARTICLE • Adv. Weed Sci. 40 • 2022 • https://doi.org/10.51694/AdvWeedSci/2022;40:00012 linkcopy

First report of multiple resistance of goosegrass to herbicides in Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Background This manuscript presents data of screening and dose-response curves of a goosegrass population from Primavera do Leste, MT, Brazil, which results in the first official report of multiple resistance of goosegrass to ACCase and EPSPs inhibiting herbicides in Brazil.

Objective Evaluate the control of a goosegrass population from Primavera do Leste, MT, Brazil, suspected of resistance to the glyphosate, fenoxaprop-p-ethyl, and haloxyfop-methyl herbicides, using dose-response curves.

Methods The study was carried out in two stages, the first in Brasília, DF, Brazil, and the second in Piracicaba, SP, Brazil. The first stage consisted in the initial evaluation and identification of resistance, which was confirmed in the second. In the first stage, the herbicides glyphosate, fenoxaprop-p-ethyl, and haloxyfop-methyl were applied to susceptible and resistant goosegrass populations (F1 and F2 generations) with plants with 2 and 3 tillers, using nine rates (0, 0.25, 0.5, 1, 2, 4, 8, 16, and 32 times the recommended rate). In the second stage, the herbicides were applied to susceptible and resistant populations with plants with 4 leaves, using 12 rates (0, 0.03125, 0.0625, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, and 32 times the recommended rate).

Results The high sensitivity of susceptible plants combined with the high resistance level of resistant ones resulted in high resistance factors for fenoxaprop-p-ethyl and haloxyfop-methyl, with values greater than 27.8. The resistance factor for glyphosate ranged from 3.3 to 11, depending on growth stage at application time.

Conclusions The goosegrass population from Primavera do Leste, MT, Brazil, presented resistance to EPSPs (glyphosate) and ACCase (haloxyfop-methyl and fenoxaprop-ethyl) inhibiting herbicides.

Eleusine indica; Fenoxaprop-p-ethyl; Glyphosate; Haloxyfop-p-methyl

Herbicide		Formulation⁽¹⁾	Concentration (g L^-1)	Supplier

Active ingredient	Commercial product
Clethodim	Select 240 EC	EC	240	UPL
Fenoxaprop-p-ethyl	Podium EW	EW	110	Bayer
Glyphosate	Zapp QI 620	SL	620	Syngenta
Haloxyfop-p-methyl	Verdict R	EC	124.7	Corteva
Quizalofop-p-tefuryl	Panther 120 EC	EC	120	UPL

Populations	Herbicides	Control (%)			SDM (g pot^-1)

		15 DAA	30 DAA	40 DAA
Suspected of resistance	Clethodim	85.0 a⁽¹⁾	98.3 a	100.0 a	0.0 a
	Fenoxaprop-ethyl	15.0 d	15.0 d	10.0 d	26.0 c
	Haloxyfop-p-methyl	5.0 d	0.0 d	0.0 d	27.7 c
	Quizalofop-p-tefuryl	83.7 a	99.2 a	100.0 a	0.0 a
	Glyphosate	83.1 a	36.2 c	15.0 d	24.2 c
	Clethodim+glyphosate	82.5 a	63.1 b	23.8 c	15.7 b
	Fenoxaprop+glyphosate	76.8 b	18.8 c	5.0 d	26.7 c
	Haloxyfop+glyphosate	76.2 b	20.0 c	11.2 d	29.0 c
	Quizalofop+glyphosate	86.9 a	77.5 b	56.2 b	12.8 b
	Control	0.0 d	0.0 d	0.0 d	29.6 c
Susceptible	Clethodim	92.5 a	98.2 a	100.0 a	0.0 a
	Fenoxaprop-ethyl	91.9 a	99.2 a	100.0 a	0.0 a
	Haloxyfop-p-methyl	95.0 a	100.0 a	100.0 a	0.0 a
	Quizalofop-p-tefuryl	97.5 a	100.0 a	100.0 a	0.0 a
	Glyphosate	98.1 a	100.0 a	100.0 a	0.0 a
	Clethodim+glyphosate	100.0 a	100.0 a	100.0 a	0.0 a
	Fenoxaprop+glyphosate	98.1 a	100.0 a	100.0 a	0.0 a
	Haloxyfop+glyphosate	95.6 a	98.9 a	100.0 a	0.0 a
	Quizalofop+glyphosate	100.0 a	100.0 a	100.0 a	0.0 a
	Control	0.0 b	0.0 b	0.0 b	29.4 b

Populations	A1	A2	LD₅₀ (kg ha^-1)	p	R²	RF
	Control - 15 DAA
Susceptible	0.0000012	96.26	0.022	4.05	0.99	-
R-_F1	y= 47.00x + 9.96		0.850	-	0.88	38.64
R-_F2	y= 45.17x + 10.21		0.880	-	0.89	40.00
	Control - 30 DAA
Susceptible	-0.00000041	97.66	0.026	24.17	0.99	-
R-_F1	6.50	87.78	1.280	5.41	0.92	49.23
R-_F2	y= 40.33x + 3.84		1.140	-	0.94	43.85
	Control - 45 DAA
Susceptible	-0.00000061	98.09	0.027	25.11	0.99	-
R-_F1	5.77	87.92	1.310	4.81	0.92	48.52
R-_F2	y= 37.04x + 3.64		1.250	-	0.94	46.29
	SDM - 45 DAA
Susceptible	31.85	1.08	0.025	6.94	0.99	-
R-_F1	31.20	0.96	1.340	3.77	0.90	53.60
R-_F2	30.24	1.94	1.230	2.49	0.93	49.20

Populations	A1	A2	LD₅₀ (kg ha^-1)	p	R²	RF
	Control - 15 DAA
Susceptible	0.00019	100.15	0.0026	0.60	0.99	-
R-_F1	2.76	82.08	0.1700	4.15	0.97	65.38
R-_F2	-1.34	91.60	0.2500	1.50	0.97	96.15
	Control - 30 DAA
Susceptible	0.00000105	100.01	0.0088	4.14	1.00	-
R-_F1	y= 48.98x + 5.43		0.9100	-	0.91	103.41
R-_F2	y= 46.72x + 3.06		1.0000	-	0.96	113.64
	Control - 45 DAA
Susceptible	-0.000000028	100.00	0.0100	5.47	1.00	-
R-_F1	y= 48.79x + 3.98		0.9400	-	0.96	94.00
R-_F2	y= 46.44x + 0.40		1.0700	-	0.99	107.00
	SDM - 45 DAA
Susceptible	32.24	0.61	0.0072	4.17	0.99	-
R-_F1	y= -16.44x + 33.04		1.0000	-	0.92	138.89
R-_F2	y= -16.03x + 36.87		1.1500	-	0.87	159.72

Populations	A1	A2	LD₅₀ (kg ha^-1)	p	R²	RF
	Control - 15 DAA
Susceptible	0.0048	100.32	0.08	1.32	0.99	-
R-_F1	-4.44	98.00	0.62	2.05	0.98	7.75
R-_F2	4.55	97.16	0.82	3.56	0.99	10.25
	Control - 30 DAA
Susceptible	0.000063	100.03	0.18	3.64	1.00	-
R-_F1	-1.32	103.17	1.16	1.65	0.97	6.44
R-_F2	4.20	99.75	1.12	3.49	0.99	6.22
	Control - 45 DAA
Susceptible	0.000012	100.01	0.21	4.76	1.00	-
R-_F1	12.41	101.27	2.34	5.04	0.92	11.14
R-_F2	1.55	99.58	1.17	3.96	0.99	5.57
	SDM - 45 DAA
Susceptible	31.46	0.81	0.19	5.38	0.99	-
R-_F1	32.97	-0.82	1.79	1.84	0.93	9.42
R-_F2	30.22	1.12	1.09	6.74	0.96	5.74

Populations	A1	A2	LD₅₀ (kg ha^-1)	p	R²	RF
	Fenoxaprop-p-ethyl - control
Susceptible	-0.74	100.71	0.00098	-0.10	0.95	-
R-_F1	-1.19	115.47	0.63000	-2.17	0.94	640.20
R-_F2	-0.83	124.92	0.56000	-2.41	0.96	568.33
	Fenoxaprop-p-ethyl - SDM
Susceptible	1.03	100.09	0.00014	0.49	0.96	-
R-_F1	1.50	96.23	0.43000	-0.12	0.90	318.45
R-_F2	0.65	101.06	0.53000	-31.97	0.93	395.03
	Haloxyfop-p-methyl - control
Susceptible	NA	NA	<0.00019	NA	-	-
R-_F1	-2.55	101.78	0.05000	8.88	0.99	>27.84
R-_F2	-4.32	100.39	0.05000	8.66	0.99	>27.84
	Haloxyfop-p-methyl - SDM
Susceptible	NA	NA	<0.00019	NA	-	-
R-_F1	9.01	101.79	0.06000	-0.28	0.98	>33.65
R-_F2	18.11	112.04	0.06000	0.32	0.99	>31.03
	Glyphosate - control
Susceptible	-2.90	100.01	0.14000	-1.02	0.99	-
R-_F1	-2.49	100.28	0.58000	-1.85	0.98	4.05
R-_F2	-2.94	99.41	0.52000	-1.80	0.99	3.62
	Glyphosate - SDM
Susceptible	4.31	102.14	0.14000	0.80	0.97	-
R-_F1	2.86	104.37	0.47000	0.57	0.99	3.33
R-_F2	6.84	100.49	0.46000	2.23	0.98	3.28

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[TFN1] ⁽¹⁾ EC: emulsifiable concentrate, EW: oil in water emulsion, SL: soluble concentrate