A crop variety may not perform as promised. A lot can go wrong. Yield expectations often decline. But for a few brief weeks in the spring, none of those restraints yet exist. The crop yield potential is high.
Harvest time can also be a high.
But it can also be a downer if crop yields and quality are poor. Springtime is almost always a plus. The biggest problem with springtime is its brevity. Seasonal problems which follow come too soon.