Which statement best differentiates Macroinfusion from Microinfusion?

Which statement best differentiates Macroinfusion from Microinfusion?

• A. Macroinfusion uses trunk injection; Microinfusion injects into leaves.
• B. Macroinfusion uses a plastic tubing harness; Microinfusion uses a feeding needle.
• C. Macroinfusion is a granular method; Microinfusion is a spray.
• D. Macroinfusion is for soil; Microinfusion is for vascular delivery.

Answer: (B)

Macroinfusion and Microinfusion differ by how the infusion solution is connected to and delivered into the plant. Macroinfusion uses a plastic tubing harness that attaches around the trunk to route the solution into the tree’s vascular system, delivering larger volumes. Microinfusion uses a feeding needle to insert a tiny delivery point into tissue, providing precise, smaller-volume delivery directly into the vascular pathway. This apparatus-based distinction is the clearest way to tell them apart—the other descriptions describe forms of application (granular, spray) or incorrectly emphasize soil or leaf targets, which don’t capture how each method interfaces with the plant’s internal transport system.

Macroinfusion and Microinfusion differ by how the infusion solution is connected to and delivered into the plant. Macroinfusion uses a plastic tubing harness that attaches around the trunk to route the solution into the tree’s vascular system, delivering larger volumes. Microinfusion uses a feeding needle to insert a tiny delivery point into tissue, providing precise, smaller-volume delivery directly into the vascular pathway. This apparatus-based distinction is the clearest way to tell them apart—the other descriptions describe forms of application (granular, spray) or incorrectly emphasize soil or leaf targets, which don’t capture how each method interfaces with the plant’s internal transport system.