Factors affecting furfural as a nematicide on turf

Area of Science:

• Plant Pathology
• Nematology
• Turfgrass Science

Background:

• A novel furfural-based nematicide, Multiguard Protect EC, is now available for turfgrass management in the U.S.
• Belonolaimus longicaudatus is a significant nematode pest affecting turfgrass health.

Purpose of the Study:

• To evaluate the efficacy of furfural against Belonolaimus longicaudatus.
• To determine optimal concentrations and exposure times for furfural nematicide.
• To assess factors influencing furfural's practicality in turfgrass systems.

Main Methods:

• Greenhouse experiments were conducted using in vitro, soil solution, and spray application methods.
• Belonolaimus longicaudatus were exposed to varying furfural concentrations.
• Nematode populations were assessed on bermudagrass and creeping bentgrass, with and without organic thatch.

Main Results:

• In vitro exposure to furfural reduced Belonolaimus longicaudatus populations, with near elimination at concentrations ≥ 720 ppm.
• Increasing furfural concentrations in soil solution also reduced nematode numbers.
• Thatch presence slightly decreased nematicide effectiveness.
• Spray applications were less effective, with significant reduction only at the highest rates.

Conclusions:

• Furfural demonstrates significant nematicidal activity against Belonolaimus longicaudatus, particularly at higher concentrations and when applied directly to soil.
• Application method and the presence of organic matter can influence furfural efficacy in turf.
• Further research may optimize furfural use for effective nematode management in turfgrass.