Which statement about injection pressures is true?

Which statement about injection pressures is true?

• A. Best injection pressure range is 10-40 psi
• B. Best injection pressure range is 5-15 psi
• C. Best injection pressure range is 20-60 psi
• D. Best injection pressure range is 40-80 psi

Answer: (A)

The main idea is finding a safe, effective pressure to push the injection solution into the plant’s vascular system without causing damage. For trunk or stem injections in ornamental and turf trees, a moderate range around 10 to 40 psi provides that balance: it’s high enough to overcome resistance in the xylem so the solution moves into the plant, but not so high that it risks rupturing tissue, causing backflow around the injection site, or damaging vessels. Pressures below this range may not drive the solution into the vascular system well enough, while pressures above it increase the risk of tissue injury and inefficiency. Start at the lower end and adjust as needed based on the plant and equipment guidance. That’s why the statement describing 10–40 psi as the best range is considered true.

The main idea is finding a safe, effective pressure to push the injection solution into the plant’s vascular system without causing damage. For trunk or stem injections in ornamental and turf trees, a moderate range around 10 to 40 psi provides that balance: it’s high enough to overcome resistance in the xylem so the solution moves into the plant, but not so high that it risks rupturing tissue, causing backflow around the injection site, or damaging vessels. Pressures below this range may not drive the solution into the vascular system well enough, while pressures above it increase the risk of tissue injury and inefficiency. Start at the lower end and adjust as needed based on the plant and equipment guidance. That’s why the statement describing 10–40 psi as the best range is considered true.