Stalk borer degree days (base 41° F), January 1 through May 27, 2005. The top number shows accumulated base 41° F degree days. The bottom number shows expected date for 10 percent migration to occur.
Stalk borer degree days (base 41° F), January 1 through May 27, 2005. The top number shows accumulated base 41° F degree days. The bottom number shows expected date for 10 percent migration to occur.
Links:
[1] http://www.ipm.iastate.edu/ipm/icm/node/35
