The implications of red rice on food security

Durand‐Morat, Alvaro; Nalley, Lawton Lanier

doi:10.1016/j.gfs.2018.08.004

Cited by 54 publications

(31 citation statements)

References 44 publications

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“…Infestations of this species can cause up to an 80% loss in harvest for cultivated rice and is often cited as a major limiting factor for rice production. In the United States alone, estimates of production loss due to weedy rice could feed an additional 12 million people annually (Durand-Morat et al, 2018). Management efforts for weedy rice have ranged from manual removal to large scale herbicide application.…”

Section: Introductionmentioning

confidence: 99%

Weedy Rice From South Korea Arose From Two Distinct De-domestication Events

Vigueira

Olsen²,

Wagner

et al. 2020

Front. Agron.

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Section: Introductionmentioning

confidence: 99%

Weedy Rice From South Korea Arose From Two Distinct De-domestication Events

Vigueira

Olsen²,

Wagner

et al. 2020

Front. Agron.

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“…Another option is to allow a field to go fallow for a certain period with multiple herbicide burndowns, often with glyphosate, in an effort to reduce the red rice seed bank. Following Durand-Morat, Nalley and Thoma [32], we estimate the benefit of the CL technology via a counterfactual scenario in which there is no regimen to control red rice. We assume that a rice producer will rotate into another crop when the red rice infestation is such that producing rice is no longer economically profitable (a producer cannot cover their variable costs), which is associated with a yield loss of 38% or more based on the University of Arkansas' Cooperative Extension cost of rice production for 2002-2014 [35].…”

Section: Methodsmentioning

confidence: 99%

“…Yield loss and milling dockage penalties are a function of the initial infestation rate of red rice in a producer's field. We follow Durand-Morat, Nalley, and Thoma [32] and use three different initial red rice infestation rates r: light, moderate, and heavy, obtained from Burgos et al [36] and associated with the presence of 1, 4, and 10 mature red rice plants m −2 , respectively. Figure 1 illustrates the three-yield loss (YL tr ) scenarios by initial infestation rates r over time and highlights how quickly (in growing seasons) a producer would reach the 38% yield loss threshold, which we assume would trigger rotation out of rice because they could not cover their variable costs.…”

Section: Yield Lossmentioning

confidence: 99%

“…While GM rice is currently not available commercially in the United States, Durand-Morat, Nalley, and Thoma [32] found that the adoption of CL rice in the United States expanded rice supply by 5.7 million tons or 6% from 2002 to 2014 and generated environmental benefits of around $457 million. That being said, there is no literature about the cost-benefit of CL adoption for rice producers in the United States.…”

Section: Introductionmentioning

confidence: 99%

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Economic Benefits of Controlling Red Rice: A Case Study of the United States

Durand‐Morat

Nalley

2019

Agronomy

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Red rice (O. sativa) is one the most prevalent and damaging weed problems in direct seeding rice systems worldwide and can cause significant losses in rice productivity and quality. Red rice has been a problem in the United States for decades, and it is a growing problem in Asia, where 90 percent of the global rice production occurs. Unlike for other crops, where genetically engineered (GE) herbicide tolerant varieties are available, to date, Clearfield (CL) and Provisia rice are the only technologies available to selectively control red rice using chemical herbicides in commercial rice fields. We develop a counterfactual scenario without CL rice and ascertain the yield and quality losses due to red rice infestation in the Mid-South of the United States. Our findings suggest that even with the higher costs of CL rice, relative to non-CL rice, that the returns are $0.15, $0.36, and $0.54 more for every dollar invested than non-CL rice with a light, moderate, and heavy initial red rice infestation rate, respectively. These results imply that the higher upfront costs for CL rice are offset by more than proportional higher profits relative to their non-CL rice counterparts.

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“…Red rice is one of the most damaging weeds of rice cultivations in several regions of the world (Durand-Morat et al, 2018). Rice and red rice are genetically similar and belong to the same species, Oryza sativa L., and thus red rice cannot be selectively controlled with herbicides in rice cultivations (Burgos et al, 2008;Kanapeckas et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal evolution of imidazolinone-resitant red rice in 'Clearfield' rice cultivations

Kalsing¹,

Goulart

Mariot

et al. 2019

Pesq. agropec. bras.

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The objective of this work was to evaluate the distribution of imidazolinone-resistant (IMI-R) red rice (Oryza sativa) populations, the frequency of alleles conferring resistance to IMI, and the adoption of agronomic practices applied to red rice control, across growing seasons and production regions of the state of Rio Grande do Sul (RS), Brazil. In the experiment, 1,008 red rice populations were screened for resistance to IMI, 760 IMI-R red rice plants were genotyped for the acetolactate synthase (ALS) alleles conferring resistance to IMI, and 40 'Clearfield' rice growers were surveyed. IMI-R red rice populations were widespread throughout RS since the 2006/2007 growing season, with a higher initial frequency in the Depressão Central and Fronteira Sul production regions. The occurrence of IMI-R red rice ranged from 1.6 to 3.5 years after 'Clearfield' rice release. Gly654Glu was the most frequent ALS mutation in IMI-R red rice populations, which shows a gene flow from the most used 'Clearfield' rice cultivars to the red rice plants. Crop rotation systems and certified seed were used by only 30% of the surveyed growers of 'Clearfield' rice, with lower percentages in the production regions where IMI-R red rice appeared faster.

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The implications of red rice on food security

Cited by 54 publications

References 44 publications

Weedy Rice From South Korea Arose From Two Distinct De-domestication Events

Weedy Rice From South Korea Arose From Two Distinct De-domestication Events

Economic Benefits of Controlling Red Rice: A Case Study of the United States

Spatial and temporal evolution of imidazolinone-resitant red rice in 'Clearfield' rice cultivations

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