Corn crop at 79% good-to-excellent. USDA’s May 29 Crop Progress report provided the first subjective, visual-based observations of the condition of the U.S. corn crop. Based on observations from approximately 3,600 respondents, as of May 27, 79 percent of the 18-state corn area is in good-to-excellent condition the second-highest initial rating since 1991 and the highest level since 1994.