EXHIBIT 21 SUBSIDIARIES OF LINDSAY MANUFACTURING CO. Ownership Percentage ---------- Lindsay International Sales Corporation -- Delaware 100% Lindsay Transportation, Inc. -- Nebraska 100% Lindsay Foreign Sales Corporation -- Virgin Islands 100% Lindsay -- Irrigation Pty., Ltd. -- Australia (Inactive) 100% Lindsay DISC, Inc. -- Delaware (Inactive) 100% Lindsay Europe SA -- France 100% Irrigation Specialists, Inc. -- Delaware 100% Lindsay America do Sul Ltda. -- Brazil 100% LMC Professional Supply, Inc. -- Delaware (Inactive) 100% 44