Disease ranks

The disease ranks provided by CSD are assigned using an industry developed protocol that provides a quantitative measure of the relative resistance or susceptibility of cotton varieties to Verticillium wilt (V.rank) and Fusarium wilt (F.rank). All varieties are ranked on a non-linear scale from 0 (completely susceptible) to 200 (immune) depending on their level of resistance compared to a standard that is assigned a rank of 100 (V.rank = Sicala V2, F.rank = Sicot 189). The disease ranks for current varieties are provided in the graphs below. The number following the variety name represents the disease rank and the number in brackets is the number of trials that have contributed to this ranking. The larger number of trial comparisons provides a more accurate rank.

Verticillium resistance rankings (V.ranks)

V.rank ratings by variety. Sicot 746B3F 102(45) Sicot 748B3F 103(40) Sicot 619B3XF 104(15) Sicot 743B3XF 106(17) Sicala 320B3XF 108(8) Sicot 757B3XF 109(8) Sicot 714B3F 112 (17) Sicot 606B3F 114(29) Sicot 761B3XF 115(16) Siokra 253B3XF 117(16)

Data date: 29/5/2026

Fusarium resistance rankings (F.ranks)

F.rank ratings by variety. Sicot 619B3XF 102(8) Siokra 253B3XF 121(8) Sicot 743B3XF 121(8) Sicot 714B3F 128(10) Sicala 320B3XF 130(2) Sicot 748B3F 133(8) Sicot 746B3F 135(8) Sicot 757B3XF 135(2) Sicot 606B3F 144(11) Sicot 761B3XF 148(8)

Data date: 29/5/2026