The trial of any action under this chapter may be had at any general, special, or adjourned term of district court, held or called in the county in which such action may be pending, and such action may be tried at any such term. If issue is not joined prior to the commencement of any regular, special, or adjourned term, the plaintiff nevertheless may require said cause to be tried on such day thereof as the court may order, but plaintiff shall serve upon the opposite party, or parties, a seven days’ notice of trial, specifying the date of trial, as fixed by order of the court.