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Weather Adjusted Yield Trends for Corn: A Look at Iowa

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Abstract

Yield growth in agricultural crops is of importance to those who make long-term projections of food availability and price levels. Menz and Pardey (1983) found that the trend growth in corn yields was lower in the 1970s than in the previous two decades. Tannura, Irwin, and Scott (2008) cited a number of crop experts and seed companies who believe that improved technology, particularity biotechnology, will increase the rate of yield growth in corn. Yu and Babcock (2010) found that percentage losses due to drought have been reduced over time, offsetting one of the major impediments to stronger yield growth. However, other researchers have argued that climate change will slow or even reverse the rate of yield growth (World Bank 2013).

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  • Lisha Li & Dermot J. Hayes & Chad Hart, 2014. "Weather Adjusted Yield Trends for Corn: A Look at Iowa," Center for Agricultural and Rural Development (CARD) Publications apr-fall-2014-2, Center for Agricultural and Rural Development (CARD) at Iowa State University.
    • Handle: RePEc:ias:cpaper:apr-fall-2014-2
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    File URL: https://www.card.iastate.edu/ag_policy_review/article/?a=25
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    File URL: https://www.card.iastate.edu/ag_policy_review/pdf/fall-2014.pdf
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    1. Alejandro Plastina & Chad Hart, 2014. "Price Expectations and Risk Profiles Drive Commodity Program Choices," Center for Agricultural and Rural Development (CARD) Publications apr-fall-2014-5, Center for Agricultural and Rural Development (CARD) at Iowa State University.
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