Volume 41, Issue 1, November 2023, Pages 249–257
Tobdem Gaston DABIRE1, Komivi DOSSA2, Schémaeza BONZI3, Younoussa MILLOGO4, and Irénée Somda5
1 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
2 Regional Research Centre for Crop Improvement in Adaptation to Drought 01, P.O. Box 3320 Thiès Escale, Senegal
3 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
4 Université Nazi BONI, Unité de Formation et de Recherches en Sciences et Techniques 01, P.O. Box 1091 Bobo-Dioulasso 01, Burkina Faso
5 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
Original language: English
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Sorghum is the most cultivated cereal in Burkina Faso. However, sorghum is produced extensively without respect for good agricultural and storage practices and the resulting grains are permanently infected by mold species. These mold species cause seeds rot, seedling damping-off and others diseases in field. They also secrete mycotoxins harmful to human health. The main method recommended for their control is seed treatment with chemicals. However, handling pesticides presents high risks of toxicity and ecotoxicity. The search for an alternative method made it possible to identify the essential oil of Cymbopogon citratus which has antifungal properties. This essential oil was then formulated by adsorption on clay in order to facilitate its use in the field. The objective of this study was to test the efficacy of the formulation made with two types of clay against Phoma sorghina and Fusarium moniliforme, the main species of molds encountered, and to evaluate the effect of the formulation on seed germination and seedling growth. Sorghum grains from two varieties were thus coated with the formulations. The grains thus coated were first analyzed to assess the presence of the target molds and then sown in pots containing sterilized fine sand to assess the germination and growth of the seedlings. The formulations significantly reduced grain infection rates from both fungi by more than 70%. The formulation with Sitiéna clay significantly improved germination, plant vigor and root length of both varieties. Field trials are necessary to confirm the efficacy of this formulation and initiate the popularization procedure.
Author Keywords: Cymbopogon citratus, Essential oil, clay, Fusarium moniliforme, Sorghum.
Tobdem Gaston DABIRE1, Komivi DOSSA2, Schémaeza BONZI3, Younoussa MILLOGO4, and Irénée Somda5
1 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
2 Regional Research Centre for Crop Improvement in Adaptation to Drought 01, P.O. Box 3320 Thiès Escale, Senegal
3 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
4 Université Nazi BONI, Unité de Formation et de Recherches en Sciences et Techniques 01, P.O. Box 1091 Bobo-Dioulasso 01, Burkina Faso
5 Université Polytechnique de Bobo-Dioulasso, Institut du Développement Rural, BP 1091, Bobo-Dioulasso, Burkina Faso
Original language: English
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Sorghum is the most cultivated cereal in Burkina Faso. However, sorghum is produced extensively without respect for good agricultural and storage practices and the resulting grains are permanently infected by mold species. These mold species cause seeds rot, seedling damping-off and others diseases in field. They also secrete mycotoxins harmful to human health. The main method recommended for their control is seed treatment with chemicals. However, handling pesticides presents high risks of toxicity and ecotoxicity. The search for an alternative method made it possible to identify the essential oil of Cymbopogon citratus which has antifungal properties. This essential oil was then formulated by adsorption on clay in order to facilitate its use in the field. The objective of this study was to test the efficacy of the formulation made with two types of clay against Phoma sorghina and Fusarium moniliforme, the main species of molds encountered, and to evaluate the effect of the formulation on seed germination and seedling growth. Sorghum grains from two varieties were thus coated with the formulations. The grains thus coated were first analyzed to assess the presence of the target molds and then sown in pots containing sterilized fine sand to assess the germination and growth of the seedlings. The formulations significantly reduced grain infection rates from both fungi by more than 70%. The formulation with Sitiéna clay significantly improved germination, plant vigor and root length of both varieties. Field trials are necessary to confirm the efficacy of this formulation and initiate the popularization procedure.
Author Keywords: Cymbopogon citratus, Essential oil, clay, Fusarium moniliforme, Sorghum.
How to Cite this Article
Tobdem Gaston DABIRE, Komivi DOSSA, Schémaeza BONZI, Younoussa MILLOGO, and Irénée Somda, “Effect of fungicidal formulations based on Cymbopogon citratus essential oil and two contrasted natural clays on seed health and seedling development of naturally pathogen-infested sorghum,” International Journal of Innovation and Applied Studies, vol. 41, no. 1, pp. 249–257, November 2023.
