Related references
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Article
Agriculture, Multidisciplinary
Christopher E. Buddenhagen et al.
Summary: A government research grant and industry co-funding enabled us to provide free tests for herbicide resistance using seedling-based assays. Information about the service was spread through the Foundation for Arable Research and other professionals. We received 248 seed samples suspected of resistance from rural professionals and successfully tested 195 samples from 57 farms, confirming resistance in 77% of cases.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Article
Agriculture, Multidisciplinary
Hossein Ghanizadeh et al.
Summary: Rapid identification of herbicide-resistant weeds is crucial for their management. This study compared the effectiveness of two high-throughput molecular (HTM) assays with a labor-intensive method for detecting glyphosate-resistant weeds. Both HTM assays successfully detected mutations at the targeted codon and showed consistent results with the labor-intensive method. However, the HTM assays overestimated the homozygosity of the resistance allele. Despite this, cost-effective high-throughput detection of resistance is more important than accurately determining the zygosity status when initiating management actions. Overall, the HTM assays are effective and efficient tools for detecting glyphosate resistance in Lolium perenne.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Review
Agriculture, Multidisciplinary
Kerry C. Harrington et al.
Summary: Although New Zealand is experiencing an increase in herbicide-resistant weed populations, the incidence of resistance is much lower compared to Australia. The differences can be explained by the larger size of Australia, resulting in a greater exposure of weeds to herbicides annually. Another factor is the presence of Lolium rigidum in Australian agricultural systems, which is almost absent in New Zealand, but closely related species in New Zealand are also showing resistance.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Article
Agriculture, Multidisciplinary
Michael Roger Trolove et al.
Summary: The use of cover crops can enhance the sustainability of intensive cropping systems by reducing herbicide use and promoting higher yields. A five-year field trial conducted in New Zealand showed that multi-season cover cropping led to effective weed suppression and reduced damage by pests. Legume-based cover crops were found to be more beneficial than grass cover crops, and the switch to larger seeded vetch and lupin/mustard mix in the final season improved weed control and grain yields.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Article
Agriculture, Multidisciplinary
Philip E. E. Hulme
Summary: New Zealand currently has fewer herbicide-resistant crop weeds compared to other developed economies, but these numbers are expected to rise in the future due to similarities in agronomic and environmental conditions. A cluster analysis revealed a group of 11 European countries with similar herbicide-resistant weed assemblages, indicating a potential risk for New Zealand. The analysis identified 27 species of herbicide-resistant weeds within this cluster, including both established crop weeds and species found in seed imports. All eight known herbicide-resistant species in New Zealand were found in this high-risk cluster, confirming the accuracy of the analysis in assessing future risk.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Review
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Daniel J. Bloomer et al.
Summary: In response to consumer preference for chemical-free food and the growing awareness of environmental impacts, New Zealand farming needs to reduce reliance on herbicides and explore alternative technologies for weed management. The emergence of agritechnologies incorporating automation, machine vision, and artificial intelligence, as well as the development of new techniques for weed control, offer viable alternatives that minimize the use of herbicides and work effectively in different crop conditions.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
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Article
Biochemistry & Molecular Biology
Hossein Ghanizadeh et al.
Summary: Resistance to ACCase-inhibiting herbicide pinoxaden in a population of L. perenne is characterized by the concurrent action of cytochrome P-450 activity enhancement and a rare target-site mutation. The resistant population showed different levels of resistance to other herbicides but remained susceptible to clethodim.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2022)
Article
Agriculture, Multidisciplinary
Hossein Ghanizadeh et al.
Summary: Resistance to iodosulfuron, an herbicide targeting acetolactate synthase (ALS), was identified in a population of Lolium perenne L. from Canterbury, New Zealand. The resistance was due to enhanced herbicide metabolism and a target-site gene mutation. This study provides insights into the resistance mechanisms of ALS-inhibiting herbicides in Lolium perenne and highlights the importance of integrated weed management approaches.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2022)
Article
Agronomy
Daniel J. Bloomer et al.
Summary: This study developed a novel electrical weeding technology that can efficiently kill small weeds and seedlings through precise micro-shocks. The PMS technology shows higher energy efficiency compared to commercially available systems, indicating its potential for handheld electric weeders or robotic weeding systems.
Review
Agriculture, Multidisciplinary
Hossein Ghanizadeh et al.
Summary: Herbicide-resistant weeds pose serious threats to agricultural production in New Zealand, with the number of resistant biotypes increasing almost fourfold since 1996 and spreading to different agricultural and non-agricultural sectors. Developing an effective herbicide resistance management strategy requires a good understanding of the extent of the problem and molecular and biochemical aspects of herbicide resistance.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2021)
Article
Multidisciplinary Sciences
Christopher E. Buddenhagen et al.
Summary: A random survey of 87 wheat and barley farms in the Canterbury region of New Zealand revealed that 48% of the farms had herbicide-resistant weeds, with 40% showing resistance to ALS-inhibitors and 23% showing resistance to ACCase-inhibitors. New Zealand's first documented cases of resistance in Phalaris minor (fenoxaprop, clodinafop, iodosulfuron) and Bromus catharticus (pyroxsulam) were identified during the survey.
Article
Multidisciplinary Sciences
Hossein Ghanizadeh et al.
Summary: In order to manage herbicide-resistant weeds, it is essential to confirm their resistance status quickly and effectively. This study evaluated three dCAPS markers for detecting glyphosate resistance in Lolium perenne and found them to be successful in detecting mutations at codon-106 in the target enzyme, providing a quick test for monitoring glyphosate resistance mechanisms.
Article
Agronomy
Nilda R. Burgos
