If you are looking for a specific titled or about this topic, the most relevant study is:
: Researchers spread mature rice panicles onto white paper and fix them with adhesive tape to photograph them for structural and seed-count analysis using specialized software. 2. Traditional Sericulture (Silk Farming)
In the context of historic and traditional silk production, specialized beds are prepared for silkworms.
In landscaping and civil engineering, "spread mature" is a procedural instruction for soil restoration.
