The <i>Farmdoc</i> Project: This Is Still Your Father's Extension Program

Irwin, Scott H.; Schnitkey, Gary; Good, Darrel; Ellinger, Paul N.

doi:10.1111/j.0002-9092.2004.00623.x

Cited by 9 publications

(9 citation statements)

References 8 publications

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“…Although isobutanol fermentation may theoretically reach up to 80 % of the maximum yield of ethanol fermentation, actual yields achieved in practice may differ depending on the specific fermentation process. A typical modern corn‐ethanol process can attain a fermentation yield of 98 % of the theoretical maximum . Isobutanol yields from proprietary processes are not available in detail, but Gevo announced they achieved 1.80 to 1.85 gallons of isobutanol per bushel of corn in 2015 (about 34.4 % from sugars, or 83.5 % of the theoretical maximum for isobutanol) .…”

Section: Resultsmentioning

confidence: 99%

“…At ypical modern corn-ethanol process can attain af ermentation yield of 98 %o ft he theoretical maximum. [40] Isobutanol yields from proprietary processes are not availablei nd etail,b ut Gevo announced they achieved 1.80 to 1.85 gallons of isobutanol per bushel of corn in 2015 (about 34.4 %f rom sugars,o r8 3.5 %o ft he theoretical maximum for isobutanol). [41] For these fermentation yields (98 and 83.5 %o ft heoretical), the above conversion costs become $2.52 for ethanol and $2.21/$ 3.37 for isobutanol.…”

Section: Comparisonsofa Tj-from-sugarp Rocessesmentioning

confidence: 99%

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The Alcohol‐to‐Jet Conversion Pathway for Drop‐In Biofuels: Techno‐Economic Evaluation

et al. 2018

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The alcohol-to-jet (ATJ) process is a method for the conversion of alcohols to an alternative jet fuel blendstock based on catalytic steps historically utilized by the petroleum refining and petrochemical industry. This pathway provides a means for producing a sustainable alternative jet fuel (SAJF) from a wide variety of resources and offers a near-term opportunity for alcohol producers to enter the SAJF market and for the aviation sector to meet growing SAJF demand. Herein, the technical background is reviewed and selected variations of ATJ processes evaluated. Simulation and modeling were employed to assess some ATJ conversion schemes, with a particular focus on comparisons between the use of an ethanol or isobutanol intermediate. Although the utilization of isobutanol offers a 34 % lower conversion cost for the catalytic upgrading process, the cost of alcohol production is estimated to contribute more than 80 % of the total cost at the refinery. The cost of feedstock and alcohol production has a dominant effect on the overall process economics.

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Section: Resultsmentioning

confidence: 99%

Section: Comparisonsofa Tj-from-sugarp Rocessesmentioning

confidence: 99%

The Alcohol‐to‐Jet Conversion Pathway for Drop‐In Biofuels: Techno‐Economic Evaluation

et al. 2018

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“…Westhoff (2015) extends the analysis in Irwin and Good (2015) to the FAPRI baselines and finds that the projection errors are similar to the USDA baselines across commodities. Irwin and Good (2015) and Westhoff (2015) also compare the commodity price baselines with season-average prices derived from futures markets. In addition, Boussios, Skorbiansky, and MacLachlan (2021) show that USDA baseline projections consistently underestimate corn harvested area and overestimate wheat harvested area.…”

Section: Agricultural Baseline Projectionsmentioning

confidence: 91%

“…Irwin and Good (2015) question the use of USDA baseline projections in Farm Bill program choice decisions by demonstrating that corn, soybeans, and wheat price projections tend toward a steady state, leading to high projection errors. Westhoff (2015) extends the analysis in Irwin and Good (2015) to the FAPRI baselines and finds that the projection errors are similar to the USDA baselines across commodities. Irwin and Good (2015) and Westhoff (2015) also compare the commodity price baselines with season-average prices derived from futures markets.…”

Section: Agricultural Baseline Projectionsmentioning

confidence: 99%

The accuracy and informativeness of agricultural baselines

Bora

Katchova

Kuethe

2022

American J Agri Economics

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Agricultural baselines facilitate policy and investment decisions by governments and market participants by providing long‐term projections about the farm sector. Despite their importance in shaping agricultural policy, the agricultural baselines have not been rigorously evaluated. This study evaluates the accuracy and informativeness of two widely used baselines for the US farm sector published by the United States Department of Agriculture (USDA) and the Food and Agricultural Policy Research Institute (FAPRI) in three steps. First, we examine the average percent errors of the projections and perform tests of bias. Second, we use a testing framework based on the encompassing principle to test the predictive content of the projections for each horizon, determining the longest informative projection horizon. Third, we compare the USDA and FAPRI baseline projections using a multi‐horizon framework that considers all projection horizons jointly. We find that prediction error and bias increase with the horizon's length. The predictive content of the baselines projections for most variables diminishes after 4–5 years. The multi‐horizon comparison suggests that neither USDA nor FAPRI projections have uniform or average superior predictive ability over the other for most variables. Our findings are useful for the agencies producing these baselines and for the policymakers, agricultural businesses, and other stakeholders who use them. The study contributes to the recent literature on long‐term agricultural projections and establishes the groundwork for future research inquiries.

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“…It is indeed timely in this era of globalization where agricultural education and extension must adapt and take advantage of information technological developments. For further reading, I recommend an article by Irwin et al (2006) in the same journal issue where agricultural decision-makers accessed information via a website. In another journal, Yu and Wang (2006) elaborate on how distance education is being used in rural China to bridge the digital divide.…”

Section: Journal Article Reviewmentioning

confidence: 99%

Journal Article Review

2007

The Journal of Agricultural Education and Extension

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The Farmdoc Project: This Is Still Your Father's Extension Program

Cited by 9 publications

References 8 publications

The Alcohol‐to‐Jet Conversion Pathway for Drop‐In Biofuels: Techno‐Economic Evaluation

The Alcohol‐to‐Jet Conversion Pathway for Drop‐In Biofuels: Techno‐Economic Evaluation

The accuracy and informativeness of agricultural baselines

Journal Article Review

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