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Kristine T. Nemec and Jonathan G. Lundgren USDAARS, Brookings, South Dakota

Nemec adaptive management for ecosystems

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69th SWCS International Annual Conference “Making Waves in Conservation: Our Life on Land and Its Impact on Water” July 27-30, 2014 Lombard, IL

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Page 1: Nemec   adaptive management for ecosystems

Kristine T. Nemec and Jonathan G. LundgrenUSDA‐ARS, Brookings, South Dakota

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Source: Agweb.com

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Plant diversity in        agroecosystems

More efficient control of      pests and diseases but not always 

(Bone et al. 2009, Danne et al. 2009, Ratnadass et al. 2012)

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3x higher squash bee density in no‐tillage squash and pumpkin farms than in tilled farms(Shuler et al. 2005)

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1. Set goals2. Take action3. Measure progress towards goals4. Adjust objectives and strategies based on what is 

learned

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Pesticide costs = ~$20‐$50/acre for traditional corn/soybean rotation (Iowa State University 2014, U. of Illinois 2014)

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Source: Purdue Extension Entomology

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1. Set goals2. Take action3. Measure progress towards goals4. Adjust objectives and strategies based on what is 

learned

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S.. Wortman, UNL

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1. Set goals2. Take action3. Measure progress towards goals4. Adjust objectives and strategies based on what is 

learned

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Record control measures: dates weather conditions pest levels application 

U. of Minnesota

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National no‐till conference

No‐till  on the Plains ManDak no‐till conference

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1. Set goals2. Take action3. Measure progress towards goals4. Adjust objectives and strategies based on what 

is learned

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Adaptive management can be applied at the farm‐level scale to improve populations of beneficial insects to improve crop yields and reduce pest damage

More research is needed on the responses of beneficial insects to different cover cropping practices