Police are urging farmers in West Lindsey to review the security of their plant equipment after a number of thefts in the area.
In the last 48 hours a tractor and JCB have been stolen from a farm near Caenby Corner and a tractor has been taken from land off High Street, Marton.
The vehicles have been recovered but no arrests have been made.
Officers are urging farmers not to leave their vehicles in unlocked outbuildings or in fields overnight.
Call Lincolnshire Police to report crime or give information on 101.
Or give information anonymously by calling Crimestoppers on 0800 555 111.