Soilless farming system design impacts the diversity and composition of microbiota.

Different soilless farming system designs significantly influence microbial load and bacterial community composition, with drip irrigation systems showing the highest microbial counts.

• Why it matters: Understanding how system design affects microbial communities is crucial for optimizing plant health and ensuring food safety in controlled environment agriculture, yet this relationship remains poorly characterized.
• What they did: The study evaluated five soilless systems—DWC, KR, NFT, EF, and DI—by analyzing microbial load and bacterial communities in nutrient solutions and on bok choy leaves over two growing cycles, using microbial counts and community profiling.
• The result: Microbial communities varied notably by system type and cycle, with Acidovorax detected universally, highlighting the need for further research into microbial roles in plant health and food safety within hydroponic systems.