Evaluation of nematocidal effects of some herbal extracts against root-knot nematodes (Meloidogyne spp.) on coffee plants in greenhouse

Tran Ngo Tuyet Van, Le Thi Kim Kieu, Le Thi Thu Tra

The Central Laboratory

In recent years, coffee production has moved towards sustainable development, many pesticide manufacturers are turning to produce biological pesticides. From the positive results in evaluating the effectiveness of some herbal extracts to the nematodes Meloidogyne spp. damaging the roots of coffee plants in the laboratory. Experiments are conducted to evaluate effectiveness against nematodes Meloidogyne spp. damage to the roots of coffee plants under greenhouse conditions. The trial was arranged in a completely randomized design (RCD) including 4 treatments and 1 control with 3 replications. Each replication had 20 coffee trees. The results showed that the treatment formula with 0.02% cinnamon bark extract was the most effective formula against soil and root nematodes. It got 71.88% and 67.81% as based on control nematodes in roots and soil after 3 months. At the same time, the growth criteria (height, leaf pair), the percentage of plants with yellow leaves, and the percentage of swollen roots of this formula are also the best.