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Agronomy
Special Issues
Agriculture and Crop Protection: Relationship with Climate Change
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Agriculture and Crop Protection: Relationship with Climate Change

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 8063

Special Issue Editor

Prof. Singarayer Florentine

E-Mail Website
Guest Editor
Federation University Australia

Special Issue Information

Dear Colleagues,

As the global human population is projected to increase to an estimated 8 to 10 billion by 2050, the demand for essential foodstuffs will increase significantly by 59–98%. Whilst farmers across the globe will be expected to meet this demand, it is recognized that the agricultural sector in general is already facing appreciable problems, with a range of elements such as insect pests, climate change disruptions, reduction in the areas of fertile land, and herbicide-resistant weeds. It has been estimated that approximately 200,000 species of plants have been identified and recorded across the world and, of these, 4% (approximately 8000 species) have been categorized as agronomic weeds. Furthermore,  global temperatures are predicted to increase by 1.5 °C –5.9 °C during this century, and this change is likely to significantly impact average rainfall and temperatures. As a result, it is predicted that water deficit will be perhaps the most severe threat to sustainable agriculture because of the effects that these conditions have on climate change. In this respect, invasive weeds, which have traits better adapted to drought stress than crops, add to concerns regarding crop sustainability. In this Special Issue, we would like to provide an opportunity for researchers working in this space to publish their work in a high-impact journal.

Prof. Singarayer Florentine
Guest Editor

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 submissions that pass pre-check are 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 2600 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

  • weeds
  • agronomy
  • climate change
  • herbicide resistance
  • elevated CO2

Published Papers (2 papers)

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Research

17 pages, 5341 KiB  
Article
Estimating Pesticide Inputs and Yield Outputs of Conventional and Organic Agricultural Systems in Europe under Climate Change
by Livia Rasche
Agronomy 2021, 11(7), 1300; https://doi.org/10.3390/agronomy11071300 - 26 Jun 2021
Cited by 11 | Viewed by 4162
Abstract
Simulating organic agriculture is a considerable challenge. One reason is that few models are capable of simulating crop-pest interactions and the yield losses they cause. Here, a recently developed process-based crop-pest model (Pest-EPIC) was used to simulate conventional and organic agriculture in the [...] Read more.
Simulating organic agriculture is a considerable challenge. One reason is that few models are capable of simulating crop-pest interactions and the yield losses they cause. Here, a recently developed process-based crop-pest model (Pest-EPIC) was used to simulate conventional and organic agriculture in the European Union for the years 1995–2100. Yields and pesticide application rates were calibrated against FAOSTAT and Eurostat data. Results indicate that current pesticide application rates may be sufficient to control pests and diseases even at the end of the century. The range of simulated yield differences under organic and conventional agriculture under current conditions (e.g., wheat 21–55% (mean 34%) lower yields; potatoes 20–99% (mean 56%) lower yields) closely matched recorded values. Under climate change, the gap between yields under conventional and organic management will remain constant for some crops (e.g., at 3 t/ha for potatoes), but others—susceptible to a larger number of pests and diseases—may experience a widening of the yield gap (e.g., increase of yield difference from 0.8 to 1.6 t/ha for wheat). The presented results-dataset may in future be a valuable resource for integrated assessments of agricultural land use and policy planning, but the inherent uncertainty is still very high. Full article
(This article belongs to the Special Issue Agriculture and Crop Protection: Relationship with Climate Change)
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18 pages, 23120 KiB  
Article
Amaranthus retroflexus L. (Redroot Pigweed): Effects of Elevated CO2 and Soil Moisture on Growth and Biomass and the Effect of Radiant Heat on Seed Germination
by Sandra Weller, Singarayer Florentine, Muhammad Mansoor Javaid, Amali Welgama, Aakansha Chadha, Bhagirath Singh Chauhan and Christopher Turville
Agronomy 2021, 11(4), 728; https://doi.org/10.3390/agronomy11040728 - 9 Apr 2021
Cited by 9 | Viewed by 3236
Abstract
Amaranthus retroflexus L. (Amaranthaceae), Redroot pigweed, is native to North America, but has become a weed of agriculture worldwide. Previous research into competition with food crops found it significantly reduces yields. Additionally, taxonomy, biomass allocation, physiological responses to light intensity, water stress, elevated [...] Read more.
Amaranthus retroflexus L. (Amaranthaceae), Redroot pigweed, is native to North America, but has become a weed of agriculture worldwide. Previous research into competition with food crops found it significantly reduces yields. Additionally, taxonomy, biomass allocation, physiological responses to light intensity, water stress, elevated CO2, and herbicide resistance have been investigated. To extend other research findings, we investigated growth and biomass yield in response to (i) soil moisture stress, and (ii) drought and elevated CO2. Additionally, we investigated seed germination rates following exposure to three elevated temperatures for two different time periods. Overall, moisture stress reduced plant height, stem diameter, and number of leaves. Elevated CO2 (700 ppm) appeared to reduce negative impacts of drought on biomass productivity. Heating seeds at 120 °C and above for either 180 or 300 s significantly reduced germination rate. These results inform an understanding of potential responses of A. retroflexus to future climate change and will be used to predict future occurrence of this weed. The finding that exposing seeds to high temperatures retards germination suggests fire could be used to prevent seed germination from soil seed banks, particularly in no-till situations, and therefore may be used to address infestations or prevent further spread of this weed. Full article
(This article belongs to the Special Issue Agriculture and Crop Protection: Relationship with Climate Change)
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