Bollgard Cotton varieties provide good control for boll/budworm and pink bollworm populations. Bollgard cotton varieties were evaluated at Northern Mexico under Commercial conditions during July to September of 1998 and 1999. The varieties evaluated were DP-33B, DP-35B, DP-90B, DP-32B, DP-5690, all of them from Delta Pine, and Stoneville 239, Stoneville 474, Sure Grow 125 and Fiber Max 963, which are conventional varieties. All bollgard cotton varieties exhibited a good control of boll/budworm and pink bollworm, in which the pest chemical control was reduced in one application, when they were compared to the conventional varieties. The DP-33B and DP-90B cultivars produced the highest yield, which was around 20% greater than conventional varieties. These results iicreased the demand of transgenic cotton varities and expanded their commercial usage.