Three essays on biofuel, weather and corn yield

dc.contributor.advisor Bruce A. Babcock
dc.contributor.author Peng, Yixing
dc.contributor.department Economics
dc.date 2018-08-11T18:21:38.000
dc.date.accessioned 2020-06-30T02:58:01Z
dc.date.available 2020-06-30T02:58:01Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2015
dc.date.embargo 2016-03-24
dc.date.issued 2015-01-01
dc.description.abstract <p>This dissertation is to study the competition of biofuels to meet the U.S. renewable fuels standards (RFS) and its impact on biofuel and corn prices, and the impacts of weather and soil moisture on corn yield in the Midwest. Chapter 2 illustrates the hierarchical competition of U.S. corn ethanol, Brazilian sugarcane ethanol and biodiesel to meet the RFS mandates and explained the evidenced two-way trade of ethanol between the U.S. and Brazil using a computable trade model of ethanol related markets between the U.S. and Brazil. And we estimate the impact of RFS on biofuel prices, agricultural commodity prices using a stochastic partial equilibrium model. Chapter 3 develops a linear spline fixed effect model to estimate the impact of climate variables on corn yield by adding in soil moisture as an explanatory variable. Recent two drought years 2011 and 2012 are included that facilitates estimation of corn yield response to extreme conditions. Daily soil moisture data in the Upper Mississippi River Basin Area from 1980 to 2012 is simulated from the crop model EPIC, which has very comprehensive interactions between hydrology, weather, soil, crop and plant environment controls. Bayesian Markov Chain Monte Carlo approach is applied to estimate the parameters and the thresholds simultaneously. Including recent two drought years 2011 and 2012 to have more drought observations in the modern eras, Chapter 4 revisits previous literature using the our extended data and then constructs yield response functions allowing the yield deviation from weather variables to change over time. Null hypotheses that the marginal and total weather impacts of adverse weather conditions remain constant are then tested.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/14626/
dc.identifier.articleid 5633
dc.identifier.contextkey 8049386
dc.identifier.doi https://doi.org/10.31274/etd-180810-4178
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/14626
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/28811
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/14626/Peng_iastate_0097E_15145.pdf|||Fri Jan 14 20:23:43 UTC 2022
dc.subject.disciplines Economics
dc.subject.keywords Economics
dc.subject.keywords biofuels
dc.subject.keywords corn yield
dc.subject.keywords drought tolerance
dc.subject.keywords RFS mandates
dc.subject.keywords soil moisture
dc.subject.keywords weather impact
dc.title Three essays on biofuel, weather and corn yield
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 4c5aa914-a84a-4951-ab5f-3f60f4b65b3d
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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