Abstract: In this paper, a comparison test of peanut kernel number (i.e. one kernel, two kernels, three kernels or four kernels in a hole) planted in border row was carried out in order to increase yield by using marginal effect. The results showed that when three kernels per hole in border row, the yield increased more than the one when two kernels per hole in border row by 11.0% and reached a very significant level.