Kossuth held on with a 16-14 showing in the first quarter before the Blue Devils found a rhythm and surged ahead on a 21-point second quarter.
Parrish Tice and Baylee Turner put up big numbers for the Aggies, Tuner knocking down 5 of 6 free-throws in the second quarter.
Tice racked up 10-points across the first two periods, also entering the locker room with 83-percent success rate at the line.
Tice finished the night at the leading scorer for the Aggies with 18 points, and led the team with a 79-percent total in free-throws.
The Aggies finished 85-percent on the line, a 24 of 28 total.
Mary Sue Bradley ranked second for the Aggies at 12, with Turner banking on 10-points, all but two from the line.
Jasmine Allen and Shy Agnew turned in top honors for the Blue Devils at 16 and 15 points.
Adallice Young and Maleeka Patterson rounded out double digits for Booneville with 12 and 11.
The Blue Devils finish as the number three seed in 1-3A, with the Aggies falling to number four.
Both teams will hit the road on Tuesday for the first round of the North Half Tournament, with brackets to be determined today.
Division 1-3A matches up with 4-3A for the opening round, made up of teams in the Mississippi Delta.
(G) Booneville 64, Kossuth 50
KHS 14 11 9 16 -- 50
BHS 16 21 15 12 -- 64
KOSSUTH (50): Parrish Tice 18, Marlee Sue Bradley 12, Baylee Turner 10, Carleigh Mills 5, Allison Green 3, Lacy Essary 2.
BOONEVILLE (64): Jasmine Allen 16, Shy Agnew 15, Adallice Young 12, Maleeka Patterson 11, Erica Whitten 5, Dee Friar 4.
3-POINTERS: (K) Marlee Sue Bradley, Baylee Turner, Allison Green, (B) Jasmine Allen 2, Erica Whitten.