Edward Perry

Associate Professor @kstateagecon

[Jisang Yu @DrJisangYu]

Happy to see my paper with @EdPerry285 is published online. Here, we find that greater premium subsidies attract farms with low-risk into crop insurance:

https://t.co/EkM5SLhCzm

[Edward Perry @EdPerryKSU]

New paper on the impacts of GE crop adoption on applied pesticide toxicity in U.S. corn and soybeans. @kstateagecon
https://t.co/wzrHjRMEwC

[Edward Perry @EdPerryKSU]

Birds versus bees: Here are the winners and losers in the great pesticide trade-off https://t.co/m09mkkNyGU

[Nature Communications @NatureComms]

US crop insurance database show that crop production risk will rise in response to warmer temperatures. https://t.co/HaAmhQ9R4U

[Jisang Yu @DrJisangYu]

Our paper (w/ @EdPerry285 and @TackJesse), which uses crop insurance data to assess the impacts of temperature on overall/cause-specific crop yield losses, is finally out @NatureComms. @kstateagecon

[K-State Ag Economics @kstateagecon]

Congrats to Dr. @EdPerry285 on winning the @AAEA_Economics 2020 Quality of Research Discovery Award for his paper, “Valuing Product Innovation: Genetically Engineered Varieties in U.S. Corn and Soybeans.”

[Edward Perry @EdPerryKSU]

Paper on neonicotinoids is now out in JEEM: https://t.co/bfD19xgOXa
Thread below still applies.

[Edward Perry @EdPerryKSU]

Recent work w/GianCarlo Moschini on #neonicotinoid use in U.S. maize. Using ~89K surveys from '98-'14, we assess the impact of neonic adoption on trad. #insecticide use. We find a ban, as in EU, would not be a risk-free answer to falling #bee pop. Thread https://t.co/ShxAxJ8vi4

[Edward Perry @EdPerryKSU]

@mattsclancy @davidfickling @nphendricks Enjoyed the thread. Another related paper this year studied yield trend differences between the U.S. & EU as a result of GM: https://t.co/8PtM3YP7qK
Contra NYT, they found corn & soy yields have diverged between U.S. & EU since GM ban.

[Matt Clancy @mattsclancy]

Ciliberto, Moschini and @EdPerry (2019) take a completely different approach. Rather than looking at measures of yield, they look at farmer choices. CMP assume farmers are rational, and buy the seeds that maximize profit. https://t.co/PL7UV0Yhfd

[Edward Perry @EdPerryKSU]

2) Despite ubiquity of neonics, hazard quotient measures of insecticide use fell for mammals, fish, & birds. This was due to lower LD50 ratings & app. rates for neonics compared to organo & pyr. Bee levels were comparable to 1990s in '14, though risk now primarily from neonics.

[Edward Perry @EdPerryKSU]

Recent work w/GianCarlo Moschini on #neonicotinoid use in U.S. maize. Using ~89K surveys from '98-'14, we assess the impact of neonic adoption on trad. #insecticide use. We find a ban, as in EU, would not be a risk-free answer to falling #bee pop. Thread https://t.co/ShxAxJ8vi4

[Edward Perry @EdPerryKSU]

1) Neonic seed treatments intro'd in maize in '04. Rapidly adopted, along with GE insect resistant traits (CB & RW). We estimate that neonics reduced #pyrethroid & #organophosphate use by 52% & 47%, resp. GE maize also reduced insecticide use, but by less than neonics.

[Edward Perry @EdPerryKSU]

@mattsclancy @dclingi Classex (https://t.co/9GnvAaORBO) is a pretty amazing platform for online experiments. I use it for my class of 150+. It can be used on a smartphone or computer. Everything is already set up. It's based on Bergstrom's Experiments text. You have to register though (for free).

[Scott Irwin @ScottIrwinUI]

1. Some observations based final US average estimate of the corn yield for 2018. First, 176.4 bpa represents the 5th straight year of above trend yields. Is this just good weather or a signal that rate of growth in trend yields has ticked up?

[Edward Perry @EdPerryKSU]

@KansasBowhunter @SpacePlowboy No. More=better control. Clustering @ 32 oz is what's of interest-why not choose 30 oz? Plus, @ 32 w/5 lb implied acre rate is 1.25 lb/ac. Why is this rate almost never observed w/other concs? Storage savings that high? Same for 3 lb and 3.7 lb. Keep in mind this is 10 yrs ago.

[Edward Perry @EdPerryKSU]

Great synopsis by @mattsclancy on my recent paper w/G. Moschini & D. Hennessy in JEBO. After glyphosate went off patent in 2000, products w/higher concentration levels entered. We study how farmers used these products & find evidence of historical inertia
https://t.co/SDMmx3wfQu

[Matt Clancy @mattsclancy]

Very cool paper from @EdPerry285, David Hennessy, and GianCarlo Moschini forthcoming in JEBO. Are firms (specifically farms) as rational as we like to assume? Maybe not! Thread: https://t.co/EOrU3geqrB