Can be applied to all species, as long as the plant has a reasonable diameter in which to apply the herbicide (>ca. 2cm), although this can be less effective in species that regenerate from the root.
Cut down the plant, as close to the ground as possible, and paint/pulverize immediately the stump with the most appropriate herbicide in the right concentration. This mixture depends on the species and on the local conditions.
The peripheral area of the stump – sapwood (xylem) and phloem – should be well-applied with the herbicide. The herbicide should be applied avoiding runoff to the soil.
Could be used a dye (which doesn’t react with the herbicide) to better control the treated plants.
The dilution of the herbicide should be made “fresh” and have consideration to the constitution of the water that is used.
If subsequent sprouting occurs (from the stump or the root), the sprouts should be eliminated when they reach a height of 25 to 50 cm by a new cut, by pulling or by foliar application of herbicide.
The application should be made on windless days to avoid any impact on other species, or on soil or water.
Reasonable efficiency in impeding the formation of stump sprouts, as long as the active principle and the concentration of the herbicide are adequate for the species (depending on several factors).
Cost reduction in the subsequent interventions, specifically in respect to the removal of stump sprouts.
It makes possible the use of manual equipment and consequent cost reduction in manual labour.
Applicable to trees of all diameters.
The results are very variable in terms of the rate of root sprouts.
Very complex and quite possibly dangerous operation, requiring specific training and procedural obligations. Requires skilled labor.
Requires specific PPE’s and advanced technical knowledge, in the case of using manual equipment.
Climatic conditions and terrain accessibility can affect the operation, consideration of local conditions on the use of phytocide.
The efficiency of this method may be greatly affected by local conditions (for example, by the composition of the water used to dilute the herbicide) and by the inconsistencies in the application techniques (time between the cut and application) and herbicide storage.
Safe distances, safe handling of the manual equipment, caution during the high fire danger period, specific training for the handling of phytocides.
Periodical sharpening of the cutting tools and devices; maintenance of the manual equipment; maintenance of the PPEs and the herbicide application equipment.
Personal Protective Equipment (PPE)
Gloves, protective clothing, helmet with hearing and eye protection, safety glasses, cut-resistant chainsaw boots, reflective clothing, protection equipment against chemical agents.
Pruning shears, lopper, saw, chainsaw, brushcutter, brush, sprayer, herbicide(s), adjuvants (wetting agents, dyes, etc).