Can Herbicide Resistance Evolve due to Factors Other than a Repeated use of Technology? Argentina, A Case to Consider

Rubione, Claudio

doi:10.1564/v28_oct_05

Cited by 5 publications

(7 citation statements)

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“…A. palmeri in Argentina is suspected to have originated from the USA and introduced to the Latin American country via crop seed imports [19,26]. Yet, the P106S mutation identified in A. palmeri VM1 was not present in any of the 920 plants from 115 populations from Midwestern and Southern USA.…”

Section: Discussionmentioning

confidence: 99%

“…Resistance within and between adjacent fields can be transferred by seeds and by the copious amounts of A. palmeri pollen that can travel to distances of up to 300 metres and potentially farther [17]. Long-distance spread, on the other hand, is generally achieved by the transfer of seeds in farm machinery, animal feed, manure and, especially, crop seed contaminations [18,19]. In the USA alone, Palmer amaranth is present in at least 28 States, with Northernmost regions being represented by North Dakota and Minnesota [15].…”

Section: Introductionmentioning

confidence: 99%

“…The A. palmeri populations are suspected to have been introduced to soybean fields as a contaminant of seed import from the USA [26]. In a relatively short period of time, it has expanded to a large proportion of soybean production systems, with most populations being resistant to glyphosate [19,27]. A. palmeri is considered a real threat to soybean agro-systems in the country, requiring increasingly complicated and costly alternative herbicides and cultural methods for effective weed control [27].…”

Section: Introductionmentioning

confidence: 99%

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Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Kaundun

Jackson

Hutchings

et al. 2019

Plants

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The mechanism and expression of resistance to glyphosate at different plant growing temperatures was investigated in an Amaranthus palmeri population (VM1) from a soybean field in Vicuña Mackenna, Cordoba, Argentina. Resistance was not due to reduced glyphosate translocation to the meristem or to EPSPS duplication, as reported for most US samples. In contrast, a proline 106 to serine target-site mutation acting additively with EPSPS over-expression (1.8-fold increase) was respectively a major and minor contributor to glyphosate resistance in VM1. Resistance indices based on LD50 values generated using progenies from a cross between 52 PS106 VM1 individuals were estimated at 7.1 for homozygous SS106 and 4.3 for heterozygous PS106 compared with homozygous wild PP106 plants grown at a medium temperature of 24 °C day/18 °C night. A larger proportion of wild and mutant progenies survived a single commonly employed glyphosate rate when maintained at 30 °C day/26 °C night compared with 20 °C day/16 night in a subsequent experiment. Interestingly, the P106S mutation was not identified in any of the 920 plants analysed from 115 US populations, thereby potentially reflecting the difference in A. palmeri control practices in Argentina and USA.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Kaundun

Jackson

Hutchings

et al. 2019

Plants

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“…In our simulations, when variation associated with spray nozzles was considered, the added value was limited; in the best case, weed control quality was similar to non-IWM programmes, while the poorer cases were more detrimental than non-IWM programmes. Other barriers for IWM adoption include lack of direct economic benefit and sustained support from the government, availability and cost of cover crop seeds, the short window between harvest and sowing making it impractical to introduce cover crops, higher water consumption, and the lack of transportation and channels to sell less popular and profitable commodities [15,38,39]. Since IWM focuses on the causes of weed problems rather than simply reacting to existing weed populations [14], it requires growers to have sufficient understanding of agro-ecology and ecological diversity [15].…”

Section: Discussionmentioning

confidence: 99%

Modelling the Effect and Variability of Integrated Weed Management of Phalaris minor in Rice-Wheat Cropping Systems in Northern India

et al. 2021

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Phalaris minor Retz. (littleseed canarygrass) is the most problematic and herbicide-resistant weed in the rice-wheat cropping system in India. As such, it poses a severe threat to wheat yield and food security. A number of herbicidal and agronomic practices have been identified for the effective control of P. minor. These include crop rotation, crop establishment methods, herbicide spray technology, sowing time, weed seed harvest and effective herbicide mixtures. A population model of P. minor was built based on the life cycle of the species, herbicide resistance mechanisms and the effects of weed control practices. The model simulated the interactions of these factors and provided the best management recommendations for sustainably controlling this noxious weed species. Model results indicate that integration of chemical and non-chemical control methods was the most effective and sustainable strategy. For example, the integration of a happy seeder (a tractor-mounted mulching and sowing machine) with an effective post-emergence herbicide reduced the probability of weed control failure by 32% compared to the scenario with a rotavator and the same herbicide. Similarly, more conventional crop establishment methods such as a rotavator and conventional tillage could be accompanied by pre- or post-emergence applications of herbicide mixtures. Adoption of good herbicide spray technology and weed seed harvest delayed the onset of resistance evolution by up to four years. Furthermore, effective crop rotation such as the inclusion of sugarcane in place of rice in the summer season reduced the risk of resistance evolution by 31% within the 10 year simulation period. In addition to the scenarios using representative parameter values, the variability of model predictions was investigated based on some field experiments. The model provided a powerful tool for promoting Integrated Weed Management and the sustainable use of herbicides. Pragmatic ways of dealing with uncertainty in model prediction are discussed.

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“…Several studies have suggested that farm operators have less incentive to adopt herbicide resistance management practices on land that is rented than on land that is owner‐operated . This is because, while resistance management may be economically beneficial in the long run, it can often be more expensive initially.…”

Section: Introductionmentioning

confidence: 99%

Do farmers manage weeds on owned and rented land differently? Evidence from US corn and soybean farms

Frisvold

Albright

Ervin

et al. 2020

Pest Management Science

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BACKGROUND: It has been frequently argued that growers have less incentive to manage the evolution and spread of herbicide-resistant weeds on leased than on owned land. This is because resistance management provides long-term rather than short-term benefits that operators may be less assured of capturing on land they do not own. Yet, empirical evidence supporting this argument has been lacking.RESULTS: This study reports on results from a large-scale national survey of weed management and other crop production practices on US agricultural fields. Up to 11 weed management practices were compared across owner-operated versus renteroperated fields. Analysis of survey data from corn and soybean fields did not support the hypothesis that adoption of resistance management practices is lower on rented acres. In most instances, there were no statistically significant differences in herbicide use or weed management practices on rented versus owned land. This was true at both national and regional levels of analysis. Where there were significant differences, practices associated with greater herbicide resistance management were, as often as not, more prevalent on rented than owned land.CONCLUSIONS: A useful area of future research would be to test for land tenure differences in resistance management using multivariate analysis to control for confounding effects. Unobserved farmer or land characteristics may be confounding results and masking land tenure effects. Results here, however, suggest that these other effects are dominating any obvious disincentive effects of land leasing on resistance management. Of greater concern, the adoption of key resistance management practices was low on both owned and rented land.

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Can Herbicide Resistance Evolve due to Factors Other than a Repeated use of Technology? Argentina, A Case to Consider

Cited by 5 publications

References 0 publications

Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Evolution of Target-Site Resistance to Glyphosate in an Amaranthus palmeri Population from Argentina and Its Expression at Different Plant Growth Temperatures

Modelling the Effect and Variability of Integrated Weed Management of Phalaris minor in Rice-Wheat Cropping Systems in Northern India

Do farmers manage weeds on owned and rented land differently? Evidence from US corn and soybean farms

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