25/ 7/ 2| wheat, winter, hard|1.007|Heat Unit Index| 25/10/ 3| corn, grain, 100|1.003|Heat Unit Index| 10/10/ 4| sunflower|1.005|Heat Unit Index| 25/ 7/ 2| wheat, winter, hard|1.006|Heat Unit Index| 25/10/ 3| corn, grain, 100|1.002|Heat Unit Index| 10/10/ 4| sunflower|1.006|Heat Unit Index|