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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2010.5
- 수록면
- 28 - 57 (30page)
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초록· 키워드
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South Dakota is an important agricultural state in the United States with annual cash receipts from agricultural products exceeding $9 billion dollars. This production is possible because of large areas of productive soils. This publication describes the general characteristics and qualities of the major soil groups recognized in South Dakota. The soil forming factors are briefly described, soil classification is introduced, and the genesis of typical Udalf and Ustoll soils are discussed. Soil management issues impacting the use of SD soils are considered. Long-term (>70 yrs) cultivation has significantly reduced surface soil organic carbon levels (>30% reduction) when compared to non-cultivated soil. Soil test phosphorus levels significantly increased in cultivated fields due to commercial P fertilization. The major long-term production problems for SD soils are conservation of soil moisture, organic matter and nitrogen losses, fertility management, and wind and water erosion control.
목차
INTRODUCTION
MAJOR SOIL REGIONS
SOIL FORMING FACTORS
REGIONAL DISTRIBUTION OF SOUTH DAKOTA SOILS
Cool Very Dry Plain (frigid, Aridic/Typic Ustolls, Ustepts, and Ustorthents)
Warm, Very Dry Plain (mesic, Aridic/Typic Ustolls, Usterts, Ustepts, and Ustorthents)
GENESIS AND PROPERTIES OF SOUTH DAKOTA SOILS
SOIL MANGEMENT PROBLEMS
SUMMARY
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2014-521-000669437