Decreased pest pressure is sometimes associated with more diverse agroecosystems, including the addition of a rye cover crop (Secale cereale L.). However, not all pests respond similarly to greater vegetational diversity. Polyphagous pests, such as true armyworm (Mythimna unipuncta Haworth), black cutworm (Agrotis ipsilon Hufnagel), and common stalk borer (Papaipema nebris Guenee), whose host range includes rye have the potential to cause injury to crops following a rye cover crop. The objectives of this study were to compare the abundance of early-season insect pests and injury to corn (Zea mays L.) from fields with and without a rye cover crop on commercial farms. Fields were sampled weekly to quantify adult and larval pests and feeding injury to corn plants from mid-April until corn reached V8 stage, during 2014 and 2015. Measurements within fields were collected along transects that extended perpendicularly from field edges into the interior of cornfields. Adult true armyworm and adult black cutworm were captured around all cornfields, but most lepidopteran larvae captured within cornfields were true armyworm and common stalk borer. Cornfields with a rye cover crop had significantly greater abundance of true armyworm and greater proportion of injured corn. Both true armyworm abundance and feeding injury were significantly greater in the interior of cornfields with rye. Common stalk borer abundance did not differ between cornfields with or without rye cover. Farmers planting corn following a rye cover crop should be aware of the potential for increased presence of true armyworm and for greater injury to corn.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/jee/tow101 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Disentangling Sources of Momentum Fluctuations in Xe+Xe and Pb+Pb Collisions with the ATLAS Detector.
Phys Rev Lett
December 2024
CERN, Geneva, Switzerland.
High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.
View Article and Find Full Text PDFImpact of tillage, cover crop, and in situ bioreactors on nutrient loss from an artificially drained Midwestern Mollisol.
J Environ Qual
December 2024
USDA-ARS National Laboratory for Agriculture and the Environment, Ames, Iowa, USA.
Nutrient losses via subsurface tile cause environmental degradation of aquatic ecosystems. Various management practices are primarily aimed at reduction of nitrate leaching in tile discharge; however, studies on leaching of other nutrients are limited. A replicated plot experiment was initiated in 2016 as part of the Long-Term Agroecosystem Research (LTAR) network Croplands Common Experiment to quantify the effectiveness of management practices on leaching of NO-N, total P, K, and S from drained soils.
View Article and Find Full Text PDFSoil health improvements under cover crops are associated with enhanced soil content of cytokinins.
Plant Biol (Stuttg)
December 2024
Department of Environmental and Life Sciences, Trent University, Peterborough, Ontario, Canada.
Cytokinins (CKs) are phytohormones produced by plants and other soil life. including bacteria, fungi, insects, and earthworms. These organisms can release CKs to the soil, which may have positive implications for soil health and plant growth.
View Article and Find Full Text PDFFirst report of Triticale leaf rust caused by in Canada.
Plant Dis
December 2024
University of Alberta, Faculty of Agricultural, Life and Environmental Sciences, Edmonton, Alberta, Canada.
Triticale (× Triticosecale), was initially produced by crossing wheat (Triticum) with rye (Secale). Although still a minor crop in Canada, triticale grain is used both as human food (in bread, pastry products, and the brewing industry) and as livestock feed (Larter 2015). In September 2023 typical leaf rust samples were observed and collected in winter Triticale at Lacombe, Alberta.
View Article and Find Full Text PDFAssessing universal considerations in infant mortality across the globe: A descriptive observational study of sudden infant death syndrome knowledge and reduction coverage on YouTube.
Health Promot Perspect
October 2024
Department of Pediatric Nursing, Johns Hopkins Children's Center, Baltimore, MD, USA.
Article Synopsis
- Sudden unexpected infant death (SUID), primarily from sudden infant death syndrome (SIDS), is a major cause of infant mortality, but there has been no focused study on SIDS content on YouTube despite its prevalence on platforms like Instagram and Twitter.
- This observational study, conducted between December 2023 and January 2024, analyzed the top 100 SIDS-related videos on YouTube, identifying that most were produced by organizations, with a strong emphasis on risk factors and prevention measures.
- The findings suggest the need for enhanced clinical and public health strategies to better utilize digital content to address SIDS risk factors and promote awareness, especially outside the United States, to ultimately reduce infant mortality rates worldwide.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!