Glyphosate- and Imazapic-Resistant Chloris virgata Populations in the Southeastern Cropping Region of Australia
Abstract
:1. Introduction
2. Material and Methods
2.1. Seed Collection
2.2. Herbicide Screening
2.3. Statistical Analyses
3. Results and Discussion
3.1. ACCase-Inhibitors
3.2. Glyphosate
3.3. Imazapic
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Herbicide | Highly Resistant a | Moderately Resistant b | Slightly Resistant c | Susceptible d |
---|---|---|---|---|
–––––––––––% of the population––––––––––– | ||||
Clethodim | 0 | 0 | 0 | 100 |
Glyphosate | 57.5 | 27.5 | 5 | 10 |
Haloxyfop | 0 | 0 | 0 | 100 |
Imazapic | 2.5 | 85 | 12.5 | 0 |
Population | LD50 | RI | GR50 | RI |
---|---|---|---|---|
––g a.e. ha−1–– | ––g a.e. ha−1–– | |||
7/17 | 1692 | 9.0 | 355 | 2.8 |
11/17 | 1351 | 7.2 | 262 | 2.0 |
12/19 | 1979 | 10.6 | 308 | 2.4 |
3/21 | 1789 | 9.6 | 662 | 5.1 |
12/21 | 187 | 1.0 | 129 | 1.0 |
19/21 | 2689 | 14.4 | 471 | 3.7 |
25/21 | 262 | 1.4 | 148 | 1.1 |
Population | LD50 | RI | GR50 | RI |
---|---|---|---|---|
––g a.i. ha−1–– | ––g a.i. ha−1–– | |||
9/17 | 59 | 1.0 | 4 | 1.0 |
11/17 | 85 | 1.4 | 44 | 11.0 |
7/19 | 135 | 2.3 | 64 | 16.0 |
12/19 | 95 | 1.6 | 15 | 3.8 |
12/21 | 65 | 1.1 | 15 | 3.8 |
16/21 | 92 | 1.6 | 24 | 6.0 |
19/21 | 83 | 1.4 | 22 | 5.5 |
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Chauhan, B.S.; Mahajan, G. Glyphosate- and Imazapic-Resistant Chloris virgata Populations in the Southeastern Cropping Region of Australia. Agronomy 2023, 13, 173. https://doi.org/10.3390/agronomy13010173
Chauhan BS, Mahajan G. Glyphosate- and Imazapic-Resistant Chloris virgata Populations in the Southeastern Cropping Region of Australia. Agronomy. 2023; 13(1):173. https://doi.org/10.3390/agronomy13010173
Chicago/Turabian StyleChauhan, Bhagirath Singh, and Gulshan Mahajan. 2023. "Glyphosate- and Imazapic-Resistant Chloris virgata Populations in the Southeastern Cropping Region of Australia" Agronomy 13, no. 1: 173. https://doi.org/10.3390/agronomy13010173