Nguyen Xuan Hoa and Nguyen Hong Phong
Wood vinegar (Pyroligneous Acid) is mainly composed by acetic acid, acetone, methanol and more 200 organic compounds. There are a lot of studies on the use of wood vinegar in agriculture such as soil improvement, growth stimulation, plant protection, weeds control, etc. Evaluation on efficacy of wood vinegar in controlling nematodes (Meloidogyne incognita và Pratylenchus coffeae) damaging coffee trees was conducted in a trial with 5 treatments at different concentrations of wood vinegar: 0, 1, 2, 3 and 4%. The trial was repeated for 4 times in laboratory conditions. The results showed that the best treatments applied for wood vinegar at 3% and 4% of concentrations could kill 81.10% and 92.37%, respectively for Pratylenchus coffeae as well as 89.66% and 98.07%, respectively for Meloidogyne incognita after 48 hours of application. This shows that wood vinegar is good potential for the control of nematodes damaging coffee.
Key works: Wood vinegar, Meloidogyne incognita, Pratylenchus coffeae