By reducing reliance on synthetic inputs, organic agriculture can build soil health through integrated nutrient cycling practices. A recent study published in Agriculture, Ecosystems & Environment demonstrates this, showing that incorporating poultry into organic vegetable systems can improve fertility, water filtration dynamics, and crop yields.

Across a three-year period, researchers compared three organic production systems: a standard vegetable-cover crop rotation and two systems integrating poultry. They measured a variety of soil health indicators, including nutrient availability, water infiltration, and earthworm abundance. 

Results indicated that integrating poultry into vegetable rotations can have many soil health benefits. Systems with poultry had increased nutrient availability, and improved water infiltration that resulted in production gains, with lettuce yields increasing by up to 96% compared to systems without poultry integration. Specifically, plant-available nitrogen increased by 88%, phosphorus by 30% and potassium by 29% compared to the non-integrated control. Poultry-based systems also improved soil physical properties, with water infiltration rates increasing by over 100% while supporting greater earthworm abundance, indicating better soil structure and resilience to stress. Importantly, the timing of poultry integration influenced outcomes. The system in which poultry followed a summer cover crop delivered the greatest overall soil health benefits. 

Together, these improvements highlight the potential of evidence-based livestock integration in organic farming. By cycling nutrients on-farm, reducing waste, and improving ecosystem function, these systems align closely with the holistic principles of organic agriculture, offering practical benefits, such as diversified revenue streams for growers. 

Photos by Zoe Richardson and Josiah Nicklas on Unsplash