This study performed to conduct a test to increase the amount of appropriate organic matter input to organic upland soil, soil fertility, and its effect on the chemical changes and yield of corn in soil due to organic use. The pH level of the T1, T5, and T6 treatment zones where livestock excreta was used was raised to 6.0-6.5, the optimal range of the soil in Korea, and it was confirmed that the pH value was appropriate. Electrical Conductivity (EC), organic content (OM), and total nitrogen (T-N) were also identified as a trend of continuous increase. The quantity of corn gradually increased from 74.1% to 96.4% over the four-year period with the use of organic materials compared to the beginning of the test, and the utilization efficiency of nitrogen has also increased. The results of the study were found to have been able to examine the increase in quantity and changes in soil chemistry through crop cultivation using organic materials such as natural materials, green manure crops , and livestock manure compost, and it is also believed that the changes due to various factors such as soil environment, soil microbes, and climate conditions need to be made through continuous research.

Abstract
1. 서 론
2. 연구방법
    2.1. 시험구 조성 및 처리내용
    2.2. 토양 화학성 및 식물체 분석
    2.3. 작물의 생육, 수량조사 및 통계분석
3. 결과 및 고찰
    3.1. 옥수수의 생육특성 및 수량
    3.2. 유기자원 시용에 따른 토양화학성 변화
4. 결 론
REFERENCES

• 공민재(농촌진흥청 국립농업과학원) | Minjae Kong (National Academy of Agricultural Science, RDA, Jeonju 54875, Korea)
• 안필균(농촌진흥청 국립농업과학원) | Philgyun An (National Academy of Agricultural Science, RDA, Jeonju 54875, Korea)
• 정정아(농촌진흥청 국립농업과학원) | Junga Jung (National Academy of Agricultural Science, RDA, Jeonju 54875, Korea)
• 이초롱(농촌진흥청 국립농업과학원) | Chorong Lee (National Academy of Agricultural Science, RDA, Jeonju 54875, Korea)
• 이상민(농촌진흥청 국립농업과학원) | Sangmin Lee (National Academy of Agricultural Science, RDA, Jeonju 54875, Korea)
• 안난희(농촌진흥청 국립농업과학원) | Nanhee An (National Academy of Agricultural Science, RDA, Jeonju 54875, Korea) Corresponding author