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Agriculture
Special Issues
Insect Ecology and Innovative Crop Management
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Insect Ecology and Innovative Crop Management

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Systems and Management".

Deadline for manuscript submissions: closed (10 June 2023) | Viewed by 2424

Special Issue Editor

Prof. Dr. Christian Nansen

E-Mail Website
Guest Editor
Department of Entomology and Nematology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
Interests: optical sensing; cold plasma; pest management and lighting technologies; pesticide performance assessments
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

For the last several decades, the narrative around reducing heavy reliance on pesticides as the go-to solution in the management of crop pests (arthropods, nematodes, diseases, weeds, and vertebrates) has largely been driven by (negative) concerns about factors such as adverse environmental impacts, the exposure of agricultural workers, and pesticide residues on food products. The importance of these and several other concerns, both short- and long-term, has not diminished, but there may be an opportunity to promote a more positive message by show-casing opportunities of the use and deployment of ecological discoveries and innovative solutions. Accordingly, we are seeking mini-reviews, full reviews, opinion pieces, and standard research articles for a Special Issue highlighting the importance and relevance of ecological concepts, methods, innovative technologies, and approaches in 21st century crop management. It is paramount that we, as a collective group of fundamental and solution-driven scientists involved in crop management, appreciate and take advantage of past and recent ecological concepts and methods. Additionally, robotics, optical sensors, nano-technologies, molecular research, advanced environmental control, cold plasma, data-driven forecasting, and machine learning are just some of the many innovative research areas being deployed across the agricultural sector, and which are enabling new approaches to crop management. With a focus on why and how reliance on pesticides in crop management can be replaced with modern, innovative, and integrated tactics, we can promote more sustainable farming practices. Equally important, we can entice and attract new generations of scientists from a wide range of academic disciplines to pursue meaningful and rewarding careers in pest management and sustainable food production.

Dr. Christian Nansen
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. Agriculture 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

  • innovative technologies
  • precision pest management
  • smart farming
  • digital agriculture
  • insect pest ecology

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Published Papers (1 paper)

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Research

13 pages, 1739 KiB  
Article
Can Insects Assess Environmental Risk? Movement Responses and Nymph Emergence in Response to Insecticides
by Purushottam Gyawali, Heather Kim, Delaney Ruth Vance, Haleh Khodaverdi, Anil Mantri and Christian Nansen
Agriculture 2023, 13(3), 723; https://doi.org/10.3390/agriculture13030723 - 21 Mar 2023
Viewed by 2053
Abstract
In natural habitats, there is a strong evolutionary selection pressure on herbivorous insects to avoid danger and choose suitable host plants. Similar selection pressures may drive movement and choices of oviposition hosts by herbivorous insects living in agricultural cropping systems, in which insecticides [...] Read more.
In natural habitats, there is a strong evolutionary selection pressure on herbivorous insects to avoid danger and choose suitable host plants. Similar selection pressures may drive movement and choices of oviposition hosts by herbivorous insects living in agricultural cropping systems, in which insecticides are often used. In this study, we quantified movement responses and nymph emergence (collectively referred to as bio-responses) of western-tarnished plant bug (Lygus hesperus Knight (Hemiptera: Miridae)) individuals when exposed to environments associated with a perceived “risk” (experimental insecticide treatments and their corresponding controls). We introduce a novel analytical approach in which treatments (risk environments) are ranked in ascending order based on bio-responses (movement or nymph emergence). Consequently, linear regression coefficients were generated and used to interpret bio-responses of Lygus individuals in different life stages to risk environments. Initially, we predicted movement by Lygus individuals to be positively associated with environmental risk and nymph emergence to be negatively associated with environmental risk. Overall, based on a comprehensive combination of no- and two-choice bioassays, we found that: (1) In no-choice bioassays, movement parameters (both total distance moved and movement percentage) by all three life stages were lowest in low-risk environments and highest when Lygus individuals were exposed to either malathion or Grandevo. Accordingly, environments involving malathion or Grandevo were considered high-risk. (2) No-choice movement bioassays also revealed that Lygus males moved significantly more (based on comparison of regression intercepts) than other life stages, and that they responded significantly more (based on comparison of regression slopes) than conspecific females and nymphs. (3) In two-choice movement bioassays, neem elicited the most consistent movement responses by Lygus individuals, and adult life stages showed the strongest response. Two-choice movement bioassays also revealed that Lygus adults, compared to nymphs, were more likely to spend time in low-risk areas of the test arenas. (4) Nymph emergence was markedly lower in no-choice compared to two-choice bioassays, and in two-choice bioassays, Grandevo and malathion elicited especially biased nymph emergence from low-risk beans. To our knowledge, this is the first study in which movement bioassays have been used to quantify and characterize behavioral responses by Lygus life stages to environments associated with varying degrees of risk. The novel analytical approach presented in this study provides a high degree of complementarity to more traditional performance-testing methods used to evaluate responses to insecticides. Furthermore, we believe that this analytical approach can be of considerable relevance to studies of animal phenomics and behavioral studies of animals more broadly, in which adaptation and fitness parameters are examined in response to environmental risk and heterogeneity. Full article
(This article belongs to the Special Issue Insect Ecology and Innovative Crop Management)
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