Evaluation of Pathogenicity of <i>Bipolaris</i> and <i>Curvularia</i> spp. on Dwarf and Ultradwarf Bermudagrasses in Florida

Fig. 6. Comparison of foliar disease ratings at five days after inoculation with B. cynodontis, B. hawaiiensis, C. geniculata, C. lunata, and the control at 20 and 30°C for combined experiments and cultivars. Bars with the same letter within temperature regime do not differ significantly at P ≤ 0.05 as determined by Fisher’s protected LSD test using square root transformation of the disease rating values. Rating scale as follows: 1 = no symptoms, 2 = 0 to 2 mm leaf tip die-back, 3 = 2 to 4 mm leaf tip die-back and/or less <1% chlorotic leaf lesions, 4 = leaf tip die-back plus <5% chlorotic leaf lesions, 5 = leaf tip die-back plus 5 to 50% leaf lesions, and 6 = >50% leaf necrosis and blighting of leaves.

Image from Plant Health Progress article:
Evaluation of Pathogenicity of Bipolaris and Curvularia spp. on Dwarf and Ultradwarf Bermudagrasses in Florida