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Modeling the relationship between estimated foliar fungicide use and soybean yield losses due to foliar fungal diseases in the United States

Published on Aug 22, 2019in bioRxiv
路 DOI :10.1101/744581
Ananda Y Bandara1
Estimated H-index: 1
(PSU: Pennsylvania State University),
Ananda Y. Bandara1
Estimated H-index: 1
(PSU: Pennsylvania State University)
+ 3 AuthorsPaul D. Esker21
Estimated H-index: 21
(PSU: Pennsylvania State University)
Abstract
Fungicide use in the United States to manage soybean diseases has increased in recent years. The ability of fungicides to reduce disease-associated yield losses varies greatly depending on multiple factors. Nonetheless, historical data are useful to understand the broad sense and long-term trends related to fungicide use practices. In the current study, the relationship between estimated soybean yield losses due to selected foliar diseases and foliar fungicide use was investigated using annual data from 28 soybean growing states over the period of 2005 to 2015. At a national scale, a significant quadratic relationship was observed between total estimated yield losses and total fungicide use (R2 = 0.123, P
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#1Ananda Y Bandara (PSU: Pennsylvania State University)H-Index: 1
#2Dilooshi K. Weerasooriya (PSU: Pennsylvania State University)H-Index: 1
Last. Paul D. Esker (PSU: Pennsylvania State University)H-Index: 21
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ABSTRACT Soybean (Glycine max L. Merrill) is a key commodity for United States agriculture. Here we analyze the economic impacts of 23 common soybean diseases in 28 soybean-producing states in the U.S., from 1996 to 2016. From 1996 to 2016, the total estimated economic loss due to soybean diseases in the U.S. was 81.39 billion, with 8.98 billion and $12.41 billion accounting for the northern and southern U.S. losses, respectively. Across states and years, soybean cyst nematode, charcoal rot, ...
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#1Febina M. Mathew (South Dakota State University)H-Index: 4
#2Emmanuel Byamukama (South Dakota State University)H-Index: 4
Last. Carl A. Bradley (UK: University of Kentucky)H-Index: 21
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#1Guirong Zhang (UIUC: University of Illinois at Urbana鈥揅hampaign)H-Index: 4
#2Tom W. Allen (MSU: Mississippi State University)H-Index: 8
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Isolates of Cercospora kikuchii, a soybean (Glycine max) pathogen causing Cercospora leaf blight and purple seed stain, were tested to determine baseline sensitivities (n = 50) to selected quinone outside inhibitor (QoI) fungicides by conducting radial growth assays on fungicide-amended media. Baseline effective fungicide concentration to inhibit 50% of fungal radial growth (EC50) values were compared with EC50 values for isolates collected in 2011 (n = 50), 2012 (n = 50), and 2013 (n = 36) thro...
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Frogeye leaf spot, caused by Cercospora sojina Hara, is a foliar disease affecting soybean (Glycine max (L.) Merr.), often managed by applications of quinone outside inhibitor (QoI) fungicides. In 2013 and 2014, 634 C. sojina monoconidial isolates were collected from soybean fields throughout Mississippi. Initially, in vitro bioassays were performed to evaluate the sensitivity of 14 of 634 isolates plus a baseline. Resistant and sensitive isolates were characterized by determining the effective ...
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Frogeye leaf spot of soybean, caused by the fungus Cercospora sojina, reduces soybean yields in most of the top-producing countries around the world. Control strategies for frogeye leaf spot can rely heavily on quinone outside inhibitor (QoI) fungicides. In 2010, QoI fungicide-resistant C. sojina isolates were identified in Tennessee for the first time. As the target of QoI fungicides, the cytochrome b gene present in fungal mitochondria has played a key role in the development of resistance to ...
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