Navigating a Critical Juncture for Sustainable Weed Management

  title={Navigating a Critical Juncture for Sustainable Weed Management},
  author={David A. Mortensen and J. Franklin Egan and Bruce D. Maxwell and Matthew R. Ryan and Richard G. Smith},
Agricultural weed management has become entrenched in a single tactic—herbicide—resistant crops—and needs greater emphasis on integrated practices that are sustainable over the long term. In response to the outbreak of glyphosate-resistant weeds, the seed and agrichemical industries are developing crops that are genetically modified to have combined resistance to glyphosate and synthetic auxin herbicides. This technology will allow these herbicides to be used over vastly expanded areas and will… 

Herbicide-Resistant Crop Biotechnology: Potential and Pitfalls

Herbicide-resistant crops are an important agricultural biotechnology that can enable farmers to effectively control weeds without harming their crops. Glyphosate-resistant (i.e. Roundup Ready) crops

Strategies for Reduced Herbicide Use in Integrated Pest Management

The persistence of weeds in crop production systems leads to significant yield reductions, diminishing profitability, and ultimately translating to higher consumer prices. Chemical weed control has

Integrated weed management systems with herbicide-tolerant crops in the European Union: lessons learnt from home and abroad

Based on the experience gained in countries where CHT or GMHT crops are widely grown and the increased familiarity with their management, five actions are proposed to facilitate the integration of HT crops in IWM systems within the European Union.

An ecological future for weed science to sustain crop production and the environment. A review

Sustainable strategies for managing weeds are critical to meeting agriculture’s potential to feed the world’s population while conserving the ecosystems and biodiversity on which we depend. The

Integrating Insect, Resistance, and Floral Resource Management in Weed Control Decision-Making

Managing agricultural pests with an incomplete understanding of the impacts that tactics have on crops, pests, and other organisms poses risks for loss of short-term profits and longer-term negative

Ecologically sustainable weed management: How do we get from proof-of-concept to adoption?

This work examines three approaches likely to prove useful for addressing current and future challenges from weeds: diversifying weed management strategies with multiple complementary tactics, developing crop genotypes for enhanced weed suppression, and tailoring management strategies to better accommodate variability in weed spatial distributions.

Weed Management for Healthy Crop Production

This chapter deals with the potential, limitation, and impacts of the recent trend of changing agricultural practices induced by predicated climatic changes on weed management in crop production

An ecological perspective on managing weeds during the great selection for herbicide resistance.

Barry Commoner's laws of ecology are used as a conceptual frame for a review of some of the fundamental concepts of ecological weed management.

Nonconventional Weed Management Strategies for Modern Agriculture

Abstract Weeds are a significant problem in crop production and their management in modern agriculture is crucial to avoid yield losses and ensure food security. Intensive agricultural practices,

Herbicide Resistant Crops and Weeds: Implications for Herbicide Use and Weed Management

Development of crop varieties resistant to multiple herbicides is being pursued as one strategy to respond to HR weeds and debates remain over the potential of this approach relative to a more comprehensive integrated weed management strategy to successfully delay resistance.



Effects of landscape composition on spread of an herbicide-resistant weed

An empirically-derived simulation model was developed to explore GR Conyza canadensis spread in relation to characteristics of the agricultural landscape and found large-scale reliance on glyphosate for weed management has increased high-fitness habitat and will result in rapid spread of glyphosate-resistant weeds.

Glyphosate-Resistant Crops and Weeds: Now and in the Future

Glyphosate-resistant (GR) crops represent more than 80% of the 120 million ha of transgenic crops grown annually worldwide. GR crops have been rapidly adopted in soybean, maize, cotton, canola, and

Management Strategies for Herbicide-resistant Weed Populations in Australian Dryland Crop Production Systems

The continued evolution of herbicide resistance more than justifies continuing research and development efforts to produce integrated strategies and smarter herbicide use so as to achieve sustainable weed management.

Dicamba Resistance: Enlarging and Preserving Biotechnology-Based Weed Management Strategies

This work describes the development of soybean and other broadleaf plant species resistant to dicamba, a widely used, inexpensive, and environmentally safe herbicide, and will augment current herbicide resistance technologies and extend their effective lifetime.

Perspectives on Glyphosate Resistance

Information obtained in the development of glyphosate-resistant crops suggests that target-site alterations that decrease the herbicidal activity of glyphosate also may lead to reduced survival of a weed.

Robust crop resistance to broadleaf and grass herbicides provided by aryloxyalkanoate dioxygenase transgenes

Results show that single AAD transgenes can provide simultaneous resistance to a broad repertoire of agronomically important classes of herbicides, including 2,4-D, with utility in both monocot and dicot crops.

Rotation Design: A Critical Factor for Sustainable Crop Production in a Semiarid Climate: A Review

The concept of “fallow” has been a prominent management tactic in semiarid regions of the world, enabling producers to compensate for low precipitation. However, fallow phases lead to soil

Influence of Weed Management Practices and Crop Rotation on Glyphosate-Resistant Horseweed (Conyza canadensis) Population Dynamics and Crop Yield-Years III and IV

Spring-applied, residual herbicide systems were the most effective at reducing season-long in-field horseweed densities and protecting crop yields since the growth habit of horseweed in this region is primarily as a summer annual.

Evolution in action: plants resistant to herbicides.

Understanding resistance and building sustainable solutions to herbicide resistance evolution are necessary and worthy challenges to herbicides sustainability in world agriculture.

Maximizing arthropod‐mediated ecosystem services in agricultural landscapes: the role of native plants

It is predicted that the success of insect conservation programs using flowering plants to increase AMES on farmland will depend on landscape context, with the greatest success in landscapes of moderate complexity.