PROBLEM TO BE SOLVED: To provide a cropping simulating program for intuitively and simply presenting a highly accurate replant failure determination. SOLUTION: This cropping simulating program comprises setting a cropping area of wheat and barley as fb, on a 2007 field f1 where wheat and barley are wholly cropped, and as the year 2008 is a future year, assuming that cropping items the same as those of the year 2007 are cropped in the same area as fb, setting a cropping area of the year 2008 as fa, and obtaining an overlapped area fab of the cropping areas fa and fb, and an overlapped area fabc of the overlapped area fab and a cropping area fc of wheat and barley of the year 2006, and an overlapped area fabch of the overlapped area fabc and a cropping area fh of wheat and barley of the year 2005. As the overlapped area fabch exists, it is found out that wheat and barley are cropped in the same area for 4 years in a row, and it is determined that the overlapped area fabch in which wheat and barley are cropped for 4 years in a row has replant failure because of exceeding the limit year (=3) of continuous cropping. COPYRIGHT: (C)2009,JPO&INPIT
