This studies were carried out to determine the effects on the physical and chemical properties of soil when 5 different pasture species were grown in pots with lime (0 or 300 ㎏/10a) and phosphate (0, 20, 40, 80 ㎏/10a) fertilization in black(B) and very-dark-brown (VOB) volcanic ash soil of Cheju island. The pH was higher in VDB than in B(p$lt;0.01) and was increased by lime (5.53 vs 5.36, p$lt;0.01) or phosphate application (5.12, 5.44, 5.53, and 5.70 for 0, 20. 40 and 80 ㎏ of P₂ 0_5, 10a, respectively, p$lt;0.01). Available phosphate content in soil was higher in VDB than in B (54.3 vs 15.3 ppm, p$lt;0.01) and was not affected by lime application (ranged 33.45-36.11 ppm) but was increased by phosphate application (5.3, 13.4, 41.2 and 79.2 ppm for 0, 20, 40 and 80 ㎏ of P₂O_5/10a, respectively. p$lt;0.01). Ca content was not different between B and VDB, but was increased by lime application from 2.00 to 3.78 milliequivalent/100g soil (p$lt;0.01) or by phosphate application (1.84, 2.63, 3.18 and 3.92 me/100g for 0, 20, 40 and 80 ㎏ of P₂O_5/10a, respectively, P$lt;0.01). Mg content was not different between B and VDB, but was significantly increased by lime or phosphate application (p$lt;0.01). Cation exchange capacity (CEC) was higher (p$lt;0.01) in B (24.6) than in VDB (18.6) and was increased 9% by lime (p$lt;0.01) or phosphate application (20.2, 21.4, 23.4 and 25.3 me/100g for 0. 20. 40 and 80 ㎏ of P₂O_5 /10a, respectively, p$lt;0.01). K and Na contents were not different between the soil types, lime or phosphate application, but were slighty higher in soils applied with no phosphate than with phosphate. Aluminum phosphate (AI-P) and ferric phosphate (Fe-P) were higher in B than in VDB (p$lt;0.01) and were increased by phosphate (p$lt;0.01) but not by lime application.