Accuracy of a Dose of Tagetes erecta Linnaeus Leaf Powder to Control Root-Knot Nematodes (Meloidogyne spp.) on Tomato (Lycopersicum esculentum Mill.)

Abstract

Tagetes erecta Linnaeus is classified as a nematisidal plant so that it can control root-knot nematodes (Meloidogyne spp.). The purpose of this study was to determine the dose of T. erecta leaf powder, which was effective in controlling root-knot nematodes (Meloidogyne spp.) on tomato. This study used a Completely Randomized Design (CRD) with six treatments and four replications, namely the effectiveness of several doses of T. erecta leaf powder (control/ no treatment, 5 g, 10 g, 15 g, 20 g, 20 g, 25 g each 5 kg of soil). The results showed that the application of T. erecta leaf powder reduced the amount of root-knot, number of eggs and groups of eggs and the number of nematodes in the soil. The most effective dose was 20 g/ 5 kg of soil.