Area under disease (Mycosphaerella pinodes) progression curve (AUDPC) on stipules calculated between end of flowering (EF) and the physiological maturity (PM) and as a function of node position in (a) 1999 and (b) 2000 and as a function of height in (c) 1999 and (d) 2000 for four spring pea cultivars (Athos, Bridge, Obelisque and Solara).