ABSTRACT The experiment of the effect of Bio Foliar Feeding and Abitonik concentration to yield soybean (Glycine max (L) Merril) was carried out at Kedung Sari Village sub district North Magelang from 23 August until 25th Novem- ber 1992. The soil type was Latosol with altitude 380 m. The experiment design used was factorial with Rando- mized Complete…