Non-chemical weed management: Harnessing flame weeding for effective weed control

Area of Science:

• Agricultural Engineering
• Agronomy
• Sustainable Agriculture

Background:

• Weed management is crucial for crop yield.
• Traditional methods like manual and mechanical weeding are labor-intensive and costly.
• Flame weeding presents a potential alternative for efficient weed control.

Purpose of the Study:

• To design and evaluate an ergonomically optimized, hand-pulled flame weeder.
• To determine the optimal operating parameters (pressure and speed) for the flame weeder.
• To compare the effectiveness, efficiency, and cost of flame weeding against traditional methods.

Main Methods:

• Field testing of the flame weeder at varying operating pressures (20, 30, 40 psi) and forward speeds (1.00, 1.25, 1.50 km/h).
• Assessment of plant damage, survival, weight preservation, weed control effectiveness, soil temperature, and resource consumption.
• Comparative analysis of flame weeding with manual and mechanical weeding at optimized settings.

Main Results:

• Optimal performance achieved at 1 km/h and 40 psi, yielding 91.1% weed control efficiency.
• Survival rate: 27.3%, weight preservation: 32.5%, soil temperature increase: 40.74°C.
• Flame weeding demonstrated a field capacity of 0.0755 ha/h with 94.94% field efficiency.

Conclusions:

• The developed flame weeder is effective for weed management, with optimal settings identified.
• Flame weeding is significantly faster (94.82%) and more cost-effective (50.42% cheaper) than manual weeding.
• This technology offers a promising, efficient, and economical solution for sustainable weed control in agriculture.