Special Issue "Weed Management & New Approaches"

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Weed Science and Weed Management".

Deadline for manuscript submissions: 30 June 2019

Special Issue Editors

Guest Editor
Assist. Prof. Ilias Travlos

Assistant Professor of the Department of Crop Science, Agricultural University of Athens, 75, Iera Odos str., GR11855, Athens, Greece
Website | E-Mail
Interests: weed biology and ecology; herbicide resistance; integrated weed management; agronomy
Guest Editor
Dr. Nicholas Korres

Department of Crop, Soil, and Environmental Sciences, University of Arkansas, USA
E-Mail
Interests: Weed demographics and population dynamics; weed eco-physiological aspects; weed-crop interactions
Guest Editor
Dr. Rafael De Prado

University of Cordoba, Spain
E-Mail
Phone: 34 957 218600
Interests: Herbicide resistance; mechanisms of resistance; weed management

Special Issue Information

Dear Colleagues,

The core of integrated and sustainable weed management is to use a wide range of tools and methods. To sustain agriculture economically and environmentally and meet future food needs, further research is required to improve weed management and evaluate new approaches. Please share your studies on several topics of weed research in this Special Issue. In particular, submissions on the following topics (but not limited to) are invited: 1) Mechanical weed control with particular emphasis in Robotics; 2) Non-chemical weed control with particular emphasis in allelophathic relationships; 3) Nanotechnology and weed control; 4) Image processing and precision weed control; 5) RNAi technology; 6) Herbicide resistant crops and weeds; 7) Biological weed control; 8) Decision support systems; 9) Integrated weed management; 10) Data knowledge discovery and weed science.

Dr. Ilias Travlos
Dr. Nicholas Korres
Dr. Rafael De Prado
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Weed management
  • Mechanical weed control
  • Robotics
  • Non-chemical weed control
  • Allelopathy
  • Nanotechnology
  • Image processing
  • Precision weed control
  • RNAi technology
  • Herbicide resistant crops and weeds
  • Biological weed control
  • Decision support systems
  • Integrated weed management
  • Data knowledge discovery

Published Papers (4 papers)

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Research

Open AccessArticle Rigput Brome (Bromus diandrus Roth.) Management in a No-Till Field in Spain
Agronomy 2018, 8(11), 251; https://doi.org/10.3390/agronomy8110251
Received: 1 October 2018 / Revised: 31 October 2018 / Accepted: 1 November 2018 / Published: 4 November 2018
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Abstract
The adoption of no-till (NT) in the semi-arid region of Mediterranean Spain has promoted a weed vegetation change, where rigput brome (Bromus diandrus Roth) represents a main concern. In order to avoid complete reliance on herbicides, the combination of several control methods,
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The adoption of no-till (NT) in the semi-arid region of Mediterranean Spain has promoted a weed vegetation change, where rigput brome (Bromus diandrus Roth) represents a main concern. In order to avoid complete reliance on herbicides, the combination of several control methods, without excluding chemical ones, can contribute to an integrated weed management (IWM) system for this species. In this field study, 12 three-year management programs were chosen, in which alternative non-chemical methods—delay of sowing, crop rotation, sowing density and pattern, stubble removal—are combined with chemical methods to manage B. diandrus in winter cereals under NT. Moreover, their effects on weed control and crop productivity were analyzed from the point of view of the efficiency of the control methods, based on a previously developed emergence model for B. diandrus. All management programs were effective in reducing the weed infestation, despite the different initial weed density between blocks. For high weed density levels (60–500 plants m−2), two years of specific managements resulted in ≥99% reduction of its population. For even higher density levels, three years were needed to assure this reduction level. Both the emergence of the weed and the crop yields are mainly driven by the seasonal climatic conditions in this semi-arid area. For this reason, among the non-chemical methods, only crop rotation and sowing delay contributed to an effective weed population decrease as well as an increase in the economic income of the yield. The other alternative methods did not significantly contribute to controlling the weed. This work demonstrates that mid-term management programs combining chemical with non-chemical methods can effectively keep B. diandrus under control with economic gains compared to traditional field management methods in semi-arid regions. Full article
(This article belongs to the Special Issue Weed Management & New Approaches)
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Open AccessArticle Sensitivity Analysis of Alisma plantago-aquatica L., Cyperus difformis L. and Schoenoplectus mucronatus (L.) Palla to Penoxsulam
Agronomy 2018, 8(10), 220; https://doi.org/10.3390/agronomy8100220
Received: 3 August 2018 / Revised: 29 September 2018 / Accepted: 5 October 2018 / Published: 8 October 2018
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Abstract
Determining the intra-specific variability of response to a given herbicide is important for monitoring the possible shifts in the sensitivity of weed populations. This study describes the responses of populations of Alisma plantago-aquatica, Cyperus difformis, and Schoenoplectus mucronatus from Italy, Greece, Portugal,
[...] Read more.
Determining the intra-specific variability of response to a given herbicide is important for monitoring the possible shifts in the sensitivity of weed populations. This study describes the responses of populations of Alisma plantago-aquatica, Cyperus difformis, and Schoenoplectus mucronatus from Italy, Greece, Portugal, and Spain to penoxsulam, an acetolactate synthase (ALS) inhibitor widely used in rice. To evaluate previously evolved resistance to ALS inhibitors, sensitivity to azimsulfuron and bensulfuron-methyl was assessed. Dose-response experiments with penoxsulam were performed in a greenhouse simulating paddy rice field conditions. Log-logistic dose-response curves were used to estimate the ED50, ED80, ED90 and GR50, GR80, and GR90. To calculate the average ED and GR and assess the intra-specific variability, an artificial resampling method was performed. Populations ALSPA 0364, 0365, 0469, 0470, 0471; SCPMU 0371, 0475, 0267; CYPDI 0013, 0431, 0432, 0433 appeared to be resistant to sulfonylureas, while a higher sensitivity to penoxsulam was observed, while populations ALSPA 0363, CYPDI 0223 and SCPMU 9719 proved to be cross-resistant. Regardless of species, ED90 of susceptible populations were below penoxsulam label dose (40 g ai ha−1) while they reached values higher than 320 g ai ha−1 for resistant populations. Average GR50 were generally lower than ED50. Sensitivity variability among susceptible populations is relatively low, allowing for discrimination between susceptible and resistant populations, and previously evolved resistance to sulfonylureas can influence sensitivity to penoxsulam. Full article
(This article belongs to the Special Issue Weed Management & New Approaches)
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Open AccessArticle First Case of Conyza canadensis from Hungary with Multiple Resistance to Glyphosate and Flazasulfuron
Agronomy 2018, 8(8), 157; https://doi.org/10.3390/agronomy8080157
Received: 10 July 2018 / Revised: 13 August 2018 / Accepted: 13 August 2018 / Published: 20 August 2018
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Abstract
Conyza canadensis is a species invading large areas throughout the world, mainly due to its ability to evolve herbicide resistance. In Hungary, extensive areas have been infested by this species due to the difficulty in controlling it with glyphosate. To determine whether poor
[...] Read more.
Conyza canadensis is a species invading large areas throughout the world, mainly due to its ability to evolve herbicide resistance. In Hungary, extensive areas have been infested by this species due to the difficulty in controlling it with glyphosate. To determine whether poor control was a result of misapplication or glyphosate resistance, eight suspected glyphosate-resistant C. canadensis populations from different Hungarian regions were studied. In whole-plant dose-response assays with glyphosate, the LD50 and GR50 values (survival and fresh weight reduction at 50% relative to the untreated control, respectively) indicated that resistance was confirmed in five of the eight populations (H-5 population being the most resistant). Additionally, the shikimic acid accumulation tests corroborated the results observed in the dose–response assays. 11 alternative herbicides from six different modes of action (MOA) were applied at field doses as control alternatives on populations H-5 and H-6 (both in the same regions). The H-5 population showed an unexpected resistance to flazasulfuron (ALS-inhibitor). The ALS enzyme activity studies indicated that the I50 for H-5 with flazasulfuron was 63.3 times higher compared to its correspondent susceptible population (H-6). Therefore, the H-5 population exhibited multiple-resistance to flazasulfuron and glyphosate, being the first case reported in Europe for these two MOA. Full article
(This article belongs to the Special Issue Weed Management & New Approaches)
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Open AccessArticle First Report of Amaranthus hybridus with Multiple Resistance to 2,4-D, Dicamba, and Glyphosate
Agronomy 2018, 8(8), 140; https://doi.org/10.3390/agronomy8080140
Received: 10 July 2018 / Revised: 30 July 2018 / Accepted: 3 August 2018 / Published: 6 August 2018
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Abstract
In many countries, Amaranthus hybridus is a widespread weed in agricultural systems. The high prolificacy and invasive capacity as well as the resistance of some biotypes to herbicides are among the complications of handling this weed. This paper reports on the first A.
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In many countries, Amaranthus hybridus is a widespread weed in agricultural systems. The high prolificacy and invasive capacity as well as the resistance of some biotypes to herbicides are among the complications of handling this weed. This paper reports on the first A. hybridus biotypes with resistance to auxinic herbicides and multiple resistance to auxinic herbicides and the EPSPs inhibitor, glyphosate. Several dose response assays were carried out to determine and compare sensitivity of six population of A. hybridus to glyphosate, 2,4-D, and dicamba. In addition, shikimic acid accumulation and piperonil butoxide effects on 2,4-D and dicamba metabolism were tested in the same populations. The results showed four populations were resistant to dicamba and three of these were also resistant to 2,4-D, while only one population was resistant to glyphosate. The glyphosate-resistant population also showed multiple resistance to auxinic herbicides. Pretreatment with piperonil butoxide (PBO) followed by 2,4-D or dicamba resulted in the death of all individual weeds independent of herbicide or population. Full article
(This article belongs to the Special Issue Weed Management & New Approaches)
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