Evaluation of fungicidal action of four products on external fungal biota of grains.
Corn, the main crop in Argentina, is normally harvested and stored in silo bags above the safe storage moisture content for 3-6 months, and faces high risk of quality losses. The evaluation of fungicidal/fungistatic products that could potentially be used to protect wet grain stored in silo bags, ha...
| Main Authors: | , , , , , , |
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| Format: | info:ar-repo/semantics/documento de conferencia |
| Language: | Inglés |
| Published: |
University of Manitoba, Canadá
2021
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| Online Access: | http://hdl.handle.net/20.500.12123/10485 |
| _version_ | 1855036399264202752 |
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| author | Alvarez, Estefanía Cardoso, Marcelo Leandro Bartosik, Ricardo Enrique Castellari, Claudia Carla De La Torre, Diego Erreguerena, Ignacio Antonio Abadia, María Bernadette |
| author_browse | Abadia, María Bernadette Alvarez, Estefanía Bartosik, Ricardo Enrique Cardoso, Marcelo Leandro Castellari, Claudia Carla De La Torre, Diego Erreguerena, Ignacio Antonio |
| author_facet | Alvarez, Estefanía Cardoso, Marcelo Leandro Bartosik, Ricardo Enrique Castellari, Claudia Carla De La Torre, Diego Erreguerena, Ignacio Antonio Abadia, María Bernadette |
| author_sort | Alvarez, Estefanía |
| collection | INTA Digital |
| description | Corn, the main crop in Argentina, is normally harvested and stored in silo bags above the safe storage moisture content for 3-6 months, and faces high risk of quality losses. The evaluation of fungicidal/fungistatic products that could potentially be used to protect wet grain stored in silo bags, has not been widely studied. Thus, the objective of this study was to make a preliminary in-vitro comparative evaluation of four different fungicidal treatments in corn: 1) propionic acid (3 L/t); 2) a quaternary ammonium compound (3 L/t, diluted 1:25 with water); 3) sulfur dioxide (initial dose: 15% v/v); 4) phosphine (initial dose: 6.6 g/m3) along with their respective controls (non-treated). In treatments 1 and 2 (liquids) corn was sprayed with the product and then stored in a sterilized glass jar. In treatment 3, sulfur dioxide was injected into a previously sealed glass jar. In treatment 4, glass jars were placed inside a plastic drum of 60 L capacity with two aluminum phosphide tablets (0.2 g phosphine each) and closed. Both liquids and the phosphine treatments had an exposure time of 15 d (at 25 ± 1°C), while in the sulfur dioxide treatment, three exposure times were evaluated (5 min, 5 and 24 h, all at the same temperature). After the various treatments, the fungal biota (molds and yeasts) was evaluated. The results showed that the propionic acid treatment achieved a total control of fungal biota. Treatment with sulfur dioxide showed a reduction of 2-3 log10 (CFU/g DM) compared to non-treated samples. Finally, the quaternary ammonium compound and phosphine treatments only achieved a reduction in the number of colonies of 1 log10 (CFU/g DM). Based on the results of this study, propionic acid seems to be a good solution for improving the storability of wet corn in silo bags. Nevertheless, more information should be generated at laboratory and full scales. |
| format | info:ar-repo/semantics/documento de conferencia |
| id | INTA10485 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Manitoba, Canadá |
| publisherStr | University of Manitoba, Canadá |
| record_format | dspace |
| spelling | INTA104852024-04-22T10:18:35Z Evaluation of fungicidal action of four products on external fungal biota of grains. Alvarez, Estefanía Cardoso, Marcelo Leandro Bartosik, Ricardo Enrique Castellari, Claudia Carla De La Torre, Diego Erreguerena, Ignacio Antonio Abadia, María Bernadette Granos Fungicidas Ácido Propiónico Dióxido de Azufre Fosfina Hongos Grain Fungicides Proponic Acid Sulphur Dioxide Fosfin Fungi Corn, the main crop in Argentina, is normally harvested and stored in silo bags above the safe storage moisture content for 3-6 months, and faces high risk of quality losses. The evaluation of fungicidal/fungistatic products that could potentially be used to protect wet grain stored in silo bags, has not been widely studied. Thus, the objective of this study was to make a preliminary in-vitro comparative evaluation of four different fungicidal treatments in corn: 1) propionic acid (3 L/t); 2) a quaternary ammonium compound (3 L/t, diluted 1:25 with water); 3) sulfur dioxide (initial dose: 15% v/v); 4) phosphine (initial dose: 6.6 g/m3) along with their respective controls (non-treated). In treatments 1 and 2 (liquids) corn was sprayed with the product and then stored in a sterilized glass jar. In treatment 3, sulfur dioxide was injected into a previously sealed glass jar. In treatment 4, glass jars were placed inside a plastic drum of 60 L capacity with two aluminum phosphide tablets (0.2 g phosphine each) and closed. Both liquids and the phosphine treatments had an exposure time of 15 d (at 25 ± 1°C), while in the sulfur dioxide treatment, three exposure times were evaluated (5 min, 5 and 24 h, all at the same temperature). After the various treatments, the fungal biota (molds and yeasts) was evaluated. The results showed that the propionic acid treatment achieved a total control of fungal biota. Treatment with sulfur dioxide showed a reduction of 2-3 log10 (CFU/g DM) compared to non-treated samples. Finally, the quaternary ammonium compound and phosphine treatments only achieved a reduction in the number of colonies of 1 log10 (CFU/g DM). Based on the results of this study, propionic acid seems to be a good solution for improving the storability of wet corn in silo bags. Nevertheless, more information should be generated at laboratory and full scales. EEA Balcarce Fil: Alvarez, Estefanía. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Cardoso, Leandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Bartosik, Ricardo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Bartosik, Ricardo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Castellari, Claudia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: De la Torre, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Erreguerena, Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Abadía, María Bernadette. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. 2021-10-14T11:00:29Z 2021-10-14T11:00:29Z 2021-08 info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/10485 eng info:eu-repo/semantics/restrictedAccess application/pdf University of Manitoba, Canadá Proceedings of the 11th International Conference on Controlled Atmosphere and Fumigation in Stored Products. Canadá, 22-27 august de 2021 |
| spellingShingle | Granos Fungicidas Ácido Propiónico Dióxido de Azufre Fosfina Hongos Grain Fungicides Proponic Acid Sulphur Dioxide Fosfin Fungi Alvarez, Estefanía Cardoso, Marcelo Leandro Bartosik, Ricardo Enrique Castellari, Claudia Carla De La Torre, Diego Erreguerena, Ignacio Antonio Abadia, María Bernadette Evaluation of fungicidal action of four products on external fungal biota of grains. |
| title | Evaluation of fungicidal action of four products on external fungal biota of grains. |
| title_full | Evaluation of fungicidal action of four products on external fungal biota of grains. |
| title_fullStr | Evaluation of fungicidal action of four products on external fungal biota of grains. |
| title_full_unstemmed | Evaluation of fungicidal action of four products on external fungal biota of grains. |
| title_short | Evaluation of fungicidal action of four products on external fungal biota of grains. |
| title_sort | evaluation of fungicidal action of four products on external fungal biota of grains |
| topic | Granos Fungicidas Ácido Propiónico Dióxido de Azufre Fosfina Hongos Grain Fungicides Proponic Acid Sulphur Dioxide Fosfin Fungi |
| url | http://hdl.handle.net/20.500.12123/10485 |
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