Statewide soybean foliar fungicide evaluation in 2020 Mueller, Daren 2021-04-30T19:54:29.000 2021-08-14T03:55:25Z 2021-08-14T03:55:25Z Wed Jan 01 00:00:00 UTC 2020 2021-04-30 2020-12-02
dc.description.abstract <p>With support from the soybean checkoff through the United Soybean Board, Iowa State University researchers evaluated foliar fungicides on soybean in 2020. Because dry weather affected all seven field locations, this year was really an evaluation of fungicides largely in the absence of disease. Seventeen fungicides were tested at the R3 (beginning pod) growth stage, at the recommended label rate. Unlike the previous few years, frogeye leaf spot (<em>Cercospora sojina</em>) <em>was</em> only identified at the <a href="">McNay Memorial Research and Demonstration Farm</a> (Chariton), and was very low severity (1%). No frogeye leaf spot was observed at the other six Iowa State research farms — <a href="">Northwest Research and Demonstration Farm</a> (Sutherland), <a href="">Northern Research and Demonstration Farm</a> (Kanawha), <a href="">Northeast Research and Demonstration Farm</a> (Nashua), <a href="">Central Iowa Research Farms</a> (Ames), <a href="">Armstrong Memorial Research and Demonstration Farm</a> (Lewis), and <a href="">Southeast Research and Demonstration Farm</a> (Crawfordsville). The main foliar disease observed in 2020 was Septoria brown spot (<em>Septoria glycines</em>), although this was at very low levels (<3% in lower canopy) at all the locations.</p>
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dc.identifier archive/
dc.identifier.articleid 3671
dc.identifier.contextkey 22727175
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cropnews/2658
dc.language.iso en
dc.relation.ispartofseries Integrated Crop Management News
dc.source.bitstream archive/|||Fri Jan 14 23:03:25 UTC 2022
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agriculture
dc.title Statewide soybean foliar fungicide evaluation in 2020
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isSeriesOfPublication 6c8d0b1a-8ab6-4a4b-bfd0-00466ede7d16
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