Fig. 1. Fractional solar radiation interception of two cultivars of spring barley (Baronesse and Steptoe) in two seeding dates in the Year 2000 (panel A) and 2001 (panel B). In 2000 (2001), each point is the average of four (three) replications. Crops emerged on Day 131 (131) and 164 (173) in 2000 (2001) for the first and the second seeding date (dotted line), respectively.