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Cover crops improve soil health and water quality in Southern Plains agroecosystems. This research supports adaptive crop-livestock systems for climate resilience.

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Area of Science:

  • Agricultural Science
  • Ecology
  • Soil Science

Background:

  • The Southern Plains (SP) is a Long-Term Agroecosystem Research site studying diverse crop-livestock systems.
  • Climate variability impacts forage availability and agricultural productivity in the region.
  • Existing systems often involve tilled winter wheat with various uses.

Purpose of the Study:

  • To assess the impact of land and nutrient management on soil health, water quality, and carbon/water balances.
  • To evaluate diversified, adaptive crop-livestock systems for climate resilience.
  • To develop tools for managing climate, topography, and conservation practices' effects on resources.

Main Methods:

  • Comparison of tilled winter wheat systems with year-round annual cover crop mixes under conservation tillage.
  • Monitoring indicator measurements for soil health, water quality, and biomass.
  • Development and implementation of tools to analyze hydrological structures, greenhouse gas emissions, and resource usage.

Main Results:

  • Cover crop mixes can fill forage gaps, especially under variable weather conditions.
  • Year-round ground cover from cover crops reduces sediment and nutrient runoff.
  • Enhanced soil health and water-holding capacity are observed with cover crop systems.

Conclusions:

  • Incorporating fertilized, rain-fed cover crop mixtures offers a viable strategy for forage production.
  • Conservation tillage with cover crops improves environmental outcomes, including water quality and soil health.
  • Adaptive management strategies are crucial for sustainable agriculture in the face of climate change.