Response of Soybean Insects to an Autumn-Seeded Rye Cover Crop

Koch, Robert L.; Porter, Paul M.; Harbur, Matthew M.; Abrahamson, Mark; Wyckhuys, Kris A. G.; Ragsdale, David W.; Buckman, Karrie A.; Sezen, Zeynep; Heimpel, George E.

doi:10.1603/en11168

Cited by 31 publications

(26 citation statements)

References 98 publications

(100 reference statements)

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“…But also like Schmidt et al (2007), we found that when the rye was allowed to persist season-long, yields of soybean were significantly reduced by approximately 67% (Table 5), making this strategy unappealing for farmers. In a recent survey of organic soybeans preceded by winter rye cover crops, Koch et al (2012) found that aphids were reduced through cover-cropping and yields were unaffected by the cover crop, but in this study yields were exceptionally low even in the untreated control (<1.35 t per ha). Finally, incorporating wheat into soybeans as an intercrop successfully reduced potato leafhopper, while having no effects on soybean yield (Hammond and Jeffers, 1990;Miklasiewicz and Hammond, 2001).…”

Section: Speciescontrasting

confidence: 67%

“…Pests are often a symptom of producing crops under monoculture conditions, and efforts to increase the diversity of vegetation within cropland often increase natural enemy populations and reduce pest intensity (Andow, 1991;Tillman et al, 2004;Broad et al, 2009;Lundgren and Fergen, 2010;Letourneau et al, 2011;Lundgren and Fergen, 2011;Koch et al, 2012). Sources of this vegetation diversity may be in the form of low levels of weeds or the use of cover crops or ground covers.…”

Section: Introductionmentioning

confidence: 99%

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Insect communities in soybeans of eastern South Dakota: The effects of vegetation management and pesticides on soybean aphids, bean leaf beetles, and their natural enemies

et al. 2013

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Section: Speciescontrasting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Insect communities in soybeans of eastern South Dakota: The effects of vegetation management and pesticides on soybean aphids, bean leaf beetles, and their natural enemies

et al. 2013

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“…Other research has shown that non-crop plants (i.e. cover crops) preceding soybeans can affect soybean aphid abundance (Koch et al 2012(Koch et al , 2015Lundgren et al 2013). It is not clear how corn, the typical crop preceding soybeans, affects aphid abundance relative to other crop species.…”

Section: Discussionmentioning

confidence: 99%

Preceding crop affects soybean aphid abundance and predator–prey dynamics in soybean

Lundgren

Hesler

Anderson

2017

J Applied Entomology

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Crop rotations alter the soil environment and physiology of the subsequent crop in ways that may affect the abundance of herbivores and their natural enemies. Soybean aphids are a consistent pest of soybean throughout North America, but little work has focused on how preceding crops may affect pest-predator dynamics. In a replicated experiment over three years, we examined how two preceding crops (spring wheat or an oat/pea mixture) affected seasonal soybean aphid pressure and the ratio of aphids to their predator community. Peak aphid populations were reduced by 40% and 75% in years 1 and 2 by planting spring wheat before soybeans (relative to the oat-pea mixture). Aphid densities were unaffected by preceding crop in the third year of study (aphids were at threshold in this year). Predators responded positively to aphid population increases and were unaffected by preceding crops. Additional research on how crop rotations can be used as a tool to manage soybean aphids warrants further attention. 670

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“…host plant resistance and biological control) have been examined, although these have not yet become widely adopted or implemented (Ragsdale et al , ; Hodgson et al , ). An additional management tactic that has received some attention is the use of increased plant diversity within fields via cover crops and living mulches to suppress populations of A. glycines (Costamagna & Landis, ; Schmidt et al , ; Koch et al , ; Lundgren et al , ).…”

Section: Introductionmentioning

confidence: 99%

On-farm evaluation of a fall-seeded rye cover crop for suppression of soybean aphid (Hemiptera: Aphididae) on soybean

et al. 2015

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1 Cover crops offer environmental and agricultural benefits, but adoption remains low. Soybean growers have indicated that the adoption of rye as a winter cover crop would increase, if it was shown to offer suppression of a key soybean pest, the soybean aphid Aphis glycines. 2 We performed an on-farm evaluation of two cropping systems utilized in organic production and reduced-herbicide input production. One system includes a rye cover crop, whereas the other does not. 3 At six and five location-years in Minnesota, A. glycines and predator populations, respectively, were measured and compared between the systems with and without rye. 4 The system with the rye cover crop significantly suppressed A. glycines populations on soybean at five of six location-years. Predators appeared to respond more to prey abundance than to plant diversity. An exposure analysis examining biological control potential revealed no differences between soybean with and without rye at any location-year. 5 Insect control can be added to the multiple benefits of rye winter cover crops.

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Response of Soybean Insects to an Autumn-Seeded Rye Cover Crop

Cited by 31 publications

References 98 publications

Insect communities in soybeans of eastern South Dakota: The effects of vegetation management and pesticides on soybean aphids, bean leaf beetles, and their natural enemies

Insect communities in soybeans of eastern South Dakota: The effects of vegetation management and pesticides on soybean aphids, bean leaf beetles, and their natural enemies

Preceding crop affects soybean aphid abundance and predator–prey dynamics in soybean

On-farm evaluation of a fall-seeded rye cover crop for suppression of soybean aphid (Hemiptera: Aphididae) on soybean

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