Open AccessIn vitro activities of fungicides based of plants essentials oils (NECO, ASTOUN and FERCA) and phosphorous acid on Phytophthora katsurae (Pythiaceae), causal agent of the premature nut fall and the heart rot of the coconut tree, in Côte d’Iv
Author(s) -
Koua Serge Béranger N’Goran,
Camara Brahima,
Aya Carine N’Guessan,
Nahawa Kone,
Marie-Solange Tiébré,
Ouattara Katinan Etienne,
S. Aké
Publication year - 2022
Publication title -
international journal of biological and chemical sciences
Language(s) - English
Resource type - Journals
eISSN - 1997-342X
pISSN - 1991-8631
DOI - 10.4314/ijbcs.v15i5.22
Subject(s) - fungicide , phytophthora , horticulture , mycelium , biology , chemistry
The present study aimed at evaluating the antifungal activities of NECO, ASTOUN and FERCA fungicides based of plants essentials oils against Phytophthora katsurae a major constraint in coconut plantations in Côte d'Ivoire. In vitro, the inhibition properties of these fungicides was evaluated at different concentrations 50, 100, 250, 500, 1000, 1500, 2000 and 2500 ppm and compared to a synthetic fungicide (phosphorous acid) at 1, 5, 10, 25, 50, 100 and 150 ppm on the radial growth of the mycelium of an isolated pathogen from a diseased nut. The mycelial growth was measured every day during 10 days in the Petri dishes. The results showed inhibition rates ranging from 1.48% to 100%. The biopesticides NECO and ASTOUN were effective against Phytophthora katsurae at respectively 149.14 and 272.38 ppm compared to phosphorous acid. NECO was fungitoxic at 2500 ppm and fungistatic at 1500 and 2000 ppm. Phosphorous acid was simply fungicidal at 150 ppm. Based on these results, these fungicides based of plants essentials oils could be used as biological control of Pnhytophthora katsurae in coconut plantations in Côte d'Ivoire.