Fig. 1. Percentage endophytism for each hybrid over the course of the growing season in 1997 field studies. Hybrids: 
= Ciba 4494; 
= Ciba Max 454; x = Pioneer 3489; * = Pioneer 34R06.
Fig. 1. Percentage endophytism for each hybrid over the course of the growing season in 1997 field studies. Hybrids: = Ciba 4494; = Ciba Max 454; x = Pioneer 3489; * = Pioneer 34R06.