Reflections on 14 years as Editor‐in‐Chief

Marshall, E. J. P.

doi:10.1111/wre.12350

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…The approximated optimum germination temperature of false jagged-chickweed (22°C) in this study was almost in accordance with the estimated optimal temperature (20°C) for a seed lot of false jagged-chickweed collected from Alborz province, Iran, where the maximum germination was 74% (Deihimfard et al 2018). The difference in final germination of false jagged-chickweed between the present study and the study by Deihimfard et al (2018) is not surprising, as variability between different seed collections exists (Marshall 2019). It was also reported that variability in germination is common among populations and seeds collected in different years (Andersson and Milberg 1998).…”

Section: Effects Of Constant Temperature On Seed Germination Traitssupporting

confidence: 47%

Journal of Plant Protection Research

Moeini,

Keshtkar,

Sasanfar

et al. 2021

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False jagged-chickweed (Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey.) is an invasive weed species distributed in many regions of Iran. Scientific knowledge about the biology and ecology of false jagged-chickweed is rare. In a series of laboratory experiments, the effect of chilling treatments, potassium nitrate (KNO 3 ), gibberellic acid (GA 3 ), concentrations, temperature regimes, and sowing depths on seed germination and breaking seed dormancy of false jagged-chickweed was studied. In two field experiments the phenology of false jagged-chickweed and winter wheat (Triticum aestivum) was also compared. Chilling treatment for 15 days, a KNO 3 concentration of 30 µmolar and a GA 3 concentration of 144 µmolar increased germination percentage and germination rate. However, chilling treatment for 15 days did not increase germination rate as well as the KNO 3 and GA 3 treatments. A quadratic polynomial model predicted that the optimum temperature giving the maximum germination percentage was 22°C. Seedlings emerged in a range of sowing depths from 0 to 8 cm, while no seedling emergence occurred at sowing depths greater than 10 cm. Based on a Gaussian model, the optimum sowing depth was predicted to be 3.9 cm. False jagged-chickweed required higher growing degree days (GDD) for seedling emergence than winter wheat, while the flowering stage of false jagged-chickweed occurred earlier than winter wheat. Results achieved in the present study are of interest not only for studying other life cycle aspects of this species but also as basic information for developing management strategies.

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Section: Effects Of Constant Temperature On Seed Germination Traitssupporting

confidence: 47%

Journal of Plant Protection Research

Moeini,

Keshtkar,

Sasanfar

et al. 2021

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“…In the 50th edition of Weed Research the then Editor‐in‐Chief Dr E J P Marshall wrote that ten years before he had ‘noted the approach of the post‐herbicide era’ (Marshall, 2019). Considering Weed Research, along with other weed science journals, have been dedicated to herbicide science for most of their existence (some still are), this could be considered a provocative statement.…”

Section: Introductionmentioning

confidence: 99%

Redefining weeds for the post‐herbicide era

Merfield

2022

Weed Research

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In the 50th edition of Weed Research the Editor-in-Chief introduced the concept of 'the post-herbicide era'. This appears increasingly prescient as herbicides continue to face ever-increasing legislative restrictions and evolved resistance. They are also an important enabler of intensive agriculture which is a key contributor to the planetary crises, such as climate change and biodiversity loss. Integrated weed management (IWM) is the clear direction of travel for both weed science and practice, and is increasingly being holistically integrated into overall crop management. However, most definitions of 'weeds' date from the era of intensive agriculture, so may not be suitable for the post-herbicide era and IWM. It is argued that deciding if a plant is a weed is fundamentally a 'value judgement', so weeds are, therefore, ethical and social constructs, and not a scientific concept. The proposed definition is 'A plant, or population of plants, in a specific time and place, causing significant harm, either immediately or in the longer term, based on a holistic analysis of both their positive and negative attributes'. Thus, plants are defined as weeds on a case-by-case basis, that is, at a specific time and place, which counters the belief that a particular plant species are weeds. Significant harm is the value statement at the heart of the definition. As seedbanks and living plants persist from year to year and plants can become invasive, a caveat about the harm being in the future is required. The analysis of harm must also be holistic, for example, consider all ecosystem services that the plants provide. 'Other plants' or 'aliae plantae' are suggested to describe non-crop plants that are not weeds that this definition creates.

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Weed Science—The Future

Zimdahl,

Basinger

2024

Fundamentals of Weed Science

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Reflections on 14 years as Editor‐in‐Chief

Cited by 3 publications

References 11 publications

Journal of Plant Protection Research

Journal of Plant Protection Research

Redefining weeds for the post‐herbicide era

Weed Science—The Future

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