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Climatic influence on corn sowing date in the Midwestern United States
Author(s) -
Choi YongSang,
Gim HyeonJu,
Ho ChangHoi,
Jeong SuJong,
Park Seon Ki,
Hayes Michael J.
Publication year - 2016
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.4799
Subject(s) - sowing , precipitation , environmental science , agriculture , air temperature , climate change , climatology , period (music) , geography , atmospheric sciences , agronomy , meteorology , ecology , biology , physics , archaeology , geology , acoustics
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.