Climatic influence on corn sowing date in the Midwestern United States

Yong Sang Choi, Hyeon Ju Gim, Chang Hoi Ho, Su Jong Jeong, Seon Ki Park, Michael J. Hayes

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

This study investigated the climatic influence on the corn sowing date in the Midwestern United States by comparing the survey data of corn cultivation with meteorological records in nine states for the last 36 years (1979–2014). The results show that the year-to-year changes in the sowing date were significantly affected by springtime air temperature and precipitation in the nine states, although large state-to-state differences were found in the degree of sowing date–meteorology relationship. We determined that the 36-year climatological warm period (CWP) with daily mean temperatures ≥10 °C plays an important role in the state-to-state differences. For the states with longer CWPs, the influence of air temperature (precipitation) was generally weaker (stronger). This observed counteractive relationship should be considered for crop modelling for more effective assessment of the impact of climate change on agriculture.

Original languageEnglish
Pages (from-to)1595-1602
Number of pages8
JournalInternational Journal of Climatology
Volume37
Issue number3
DOIs
StatePublished - 15 Mar 2017

Keywords

  • climatic influence
  • corn (maize)
  • sowing date
  • the Midwestern United Sates

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