Town have won just six times in 18 games at home this season, with the Tractor Boys failing to find the amount of consistency required to mount a sustained assault on the play-offs.
Magilton - whose side are only six points away from the top six - has targeted games at Portman Road as vital, especially after two impressive showings on the road against Wolves and Reading in the last week.
"We need more of the same, after two terrific performances, on home soil over the rest of the season," he told the club's official website.
"If we are to finish in the play-offs, our form at Portman Road over the next five games we have left is going to hold the key.
"The fans have been left frustrated as much as we have been by the way our results have gone at home but we need everyone to be right behind the players now."