A Venturi effect can help cure our trees.

Area of Science:

• Plant Physiology
• Arboriculture
• Pest Management

Background:

• Xylem sap transport in woody plants relies on water potential gradients.
• Trunk injection (or infusion) enables internal delivery of pesticides, beneficial in urban settings.
• Traditional drilling methods for trunk injection cause significant plant damage.

Purpose of the Study:

• To introduce a novel, drill-free instrument for tree trunk injection.
• To evaluate the efficacy and plant-friendliness of this new method.

Main Methods:

• A manual, drill-free instrument with a perforated, lenticular-shaped blade was developed.
• The instrument enters the trunk by separating woody fibers with minimal friction.
• The blade design enhances sap velocity for natural liquid uptake.

Main Results:

• The drill-free method minimizes damage to the xylem vessels.
• The instrument facilitates efficient uptake of injected liquids to the leaves.
• Plant tissues naturally close injection ports, and cambial activity aids healing.

Conclusions:

• The drill-free trunk injection method offers a less invasive alternative to traditional techniques.
• This approach improves the targeted delivery of pesticides in trees.
• The method shows promise for sustainable pest management in urban and other environments.