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Evaluating Impacts on Soil Health and Long-Term Sustainability of Cover Crops in Maize-Soybean Systems
Evaluating Impacts on Soil Health and Long-Term Sustainability of Cover Crops in Maize-Soybean Systems
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103109
- ISBN
- 9798291583159
- DDC
- 630
- 서명/저자
- Evaluating Impacts on Soil Health and Long-Term Sustainability of Cover Crops in Maize-Soybean Systems
- 발행사항
- [Sl] : Iowa State University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 111 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Licht, Mark A.;McDaniel, Marshall D.
- 학위논문주기
- Thesis (Ph.D.)--Iowa State University, 2025.
- 초록/해제
- 요약This dissertation investigates the impacts of cover crops, specifically cereal rye, on soil health and the sustainability of maize-soybean systems in the Midwest US through multiple long-term experiments. It evaluates inexpensive do-it-yourself (DIY) soil health measurement methods against standard laboratory techniques for key indicators such as soil organic carbon, water holding capacity, aggregate stability, and microbial biomass. DIY methods did not always match standard values; however, they reliably reflected treatment trends and offered cost-effective monitoring alternatives. Another study validates the Robel Pole methodology as a rapid, non-destructive tool to estimate cereal rye biomass accumulation, facilitating timely cover crop management decisions. Finally, through a three-year split-plot experiment across hillslope positions and nitrogen rates, maize yield drag following cereal rye was found to vary with landscape position and be influenced by nitrogen availability, soil organic matter, and phosphorus levels. Random forest modeling identified nitrogen application rate, cover crop biomass, soil test phosphorus, and soil organic matter as key predictors of maize yield, highlighting complex interactions affecting productivity. The findings of this experiment emphasize the need for site-specific nitrogen management and integrated nutrient strategies to optimize cover crop benefits while minimizing yield penalties, advancing sustainable intensification of cropping systems by combining practical monitoring tools with nuanced agronomic insights.
- 일반주제명
- Agriculture
- 일반주제명
- Soil sciences
- 일반주제명
- Plant sciences
- 일반주제명
- Agronomy
- 키워드
- Cereal rye
- 키워드
- Cover crops
- 키워드
- Soil health
- 기타저자
- Iowa State University Agronomy
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103109
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■007cr#unu||||||||
■020 ▼a9798291583159
■035 ▼a(MiAaPQ)AAI31935979
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a630
■1001 ▼aVictorio Pessotto, Mila.▼0(orcid)0000-0002-5785-0458
■24510▼aEvaluating Impacts on Soil Health and Long-Term Sustainability of Cover Crops in Maize-Soybean Systems
■260 ▼a[Sl]▼bIowa State University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a111 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Licht, Mark A.;McDaniel, Marshall D.
■5021 ▼aThesis (Ph.D.)--Iowa State University, 2025.
■520 ▼aThis dissertation investigates the impacts of cover crops, specifically cereal rye, on soil health and the sustainability of maize-soybean systems in the Midwest US through multiple long-term experiments. It evaluates inexpensive do-it-yourself (DIY) soil health measurement methods against standard laboratory techniques for key indicators such as soil organic carbon, water holding capacity, aggregate stability, and microbial biomass. DIY methods did not always match standard values; however, they reliably reflected treatment trends and offered cost-effective monitoring alternatives. Another study validates the Robel Pole methodology as a rapid, non-destructive tool to estimate cereal rye biomass accumulation, facilitating timely cover crop management decisions. Finally, through a three-year split-plot experiment across hillslope positions and nitrogen rates, maize yield drag following cereal rye was found to vary with landscape position and be influenced by nitrogen availability, soil organic matter, and phosphorus levels. Random forest modeling identified nitrogen application rate, cover crop biomass, soil test phosphorus, and soil organic matter as key predictors of maize yield, highlighting complex interactions affecting productivity. The findings of this experiment emphasize the need for site-specific nitrogen management and integrated nutrient strategies to optimize cover crop benefits while minimizing yield penalties, advancing sustainable intensification of cropping systems by combining practical monitoring tools with nuanced agronomic insights.
■590 ▼aSchool code: 0097.
■650 4▼aAgriculture
■650 4▼aSoil sciences
■650 4▼aPlant sciences
■650 4▼aAgronomy
■653 ▼aCereal rye
■653 ▼aCover crops
■653 ▼aSoil health
■653 ▼aMaize-soybean systems
■690 ▼a0473
■690 ▼a0481
■690 ▼a0479
■690 ▼a0285
■71020▼aIowa State University▼bAgronomy.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0097
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356967▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
