Data from: Evaluating Forage Cover Crop Mixes for the Desert Southwest

The research titled "Evaluating Forage Cover Crop Mixes for the Desert Southwest,", aims to enhance soil health, sequester carbon, and provide low-water-use forage alternatives in the Desert Southwest. The study involved on-farm trials with various combinations of grass and broadleaf species planted during different seasons (summer and cool seasons). Key indicators measured included soil health (Permanganate Oxidizable Carbon (POXC), soil respiration, wet aggregate stability) and forage quality (crude protein, total digestible nutrients (TDN), relative feed value (RFV), relative forage quality (RFQ)).

Key Results:

1. Soil Health Improvement: Forage cover crops increased soil health indicators such as Permanganate Oxidizable Carbon (POXC), soil respiration, and wet aggregate stability.
2. Forage Quality: The forage quality of cover crop mixes was comparable to traditional forage crops, with significant levels of crude protein, total digestible nutrients (TDN), relative feed value (RFV), and relative forage quality (RFQ).
3. Water Efficiency: Cover crops used significantly less water compared to traditional forage crops, making them suitable for arid regions with water scarcity.
4. Carbon Sequestration: Increased soil organic matter (SOM) and reduced soil erosion contributed to higher carbon sequestration rates.
5. Economic Viability: The study demonstrated that cover crops could provide additional economic benefits by serving as alternative forage crops while improving environmental sustainability.

Conclusion:

Custom-designed forage cover crop mixes in the Desert Southwest can significantly improve soil health, enhance carbon sequestration, and provide high-quality forage while using considerably less water than traditional forage crops. These findings highlight the potential for cover crops to offer sustainable and economically viable solutions for farmers in arid regions, addressing both environmental and agricultural challenges.