제주 토양에서 시용한 가축분 중 양분의 유효화율

Abstract

This study was conducted to determine effects of composted livestock manure application on soil nutrient change. PVC pot (30 x 100cm) was filled with either volcanic ash soil (Gujwa series) or non- volcanic ash soil (Aewol series) and the 20 cm surface soils were applied with composted livestock manures of cattle pig and poultry at the rates of 0, 50, 100 and 150 ton/ha, respectively. After 210 days soils samples of phosphate, potassium, calcium, and magnesium affected by application of the compost. The applied composted were equivalent to the application of organic matter of 23~111 ton/ha and nitrogen of 80~450 ton/ha. Availability rate of phosphate after the application of composted livestock manures ranged from 1.6 to 91.7% according to the different composted. It was much higher in the non-volcanic ash soil than in the volcanic ash soil. Availability rate of potassium fractional recorvery rate change ranged from 22 to 94% according to the different manures. It was larger in the composted. Availability rate of calcium 38 to 93% and 9~90% in volcanic ash soil and non-volcanic ash soil, respectively, It was higher in the composted manures followed by cattle and composted pig manures. Availability rate magnesium ranged from 12 to 41% and 1~9% in volcanic ash soil and non-volcanic ash soil, respectively. The rate was higher in the composted poultry manure followed by pig and composted cattle manures.