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Abstract
Insects are one of the major causes of grain losses. Fumigation methods or controlled atmosphere (CA) treatments usually require sophisticated technologies that are not affordable in subsistence farming. This study focused in testing an inexpensive and effective modified atmosphere (MA) chamber using standard liners and soaked grain as O2 scavenger. Freshly harvested wheat (14% m.c.) was bagged in 35 kg plastic raffia bags (non-hermetic). A stack of 13 [ver mas...]
dc.contributor.authorBartosik, Ricardo Enrique
dc.contributor.authorCardoso, Marcelo Leandro
dc.contributor.authorDe La Torre, Diego
dc.contributor.authorAbadia, María Bernadette
dc.contributor.authorTulli, María Celia
dc.contributor.authorTaher, Hernán Ignacio
dc.contributor.authorMaciel, Gisele
dc.date.accessioned2021-10-14T11:30:33Z
dc.date.available2021-10-14T11:30:33Z
dc.date.issued2021-08
dc.identifier.urihttp://hdl.handle.net/20.500.12123/10487
dc.description.abstractInsects are one of the major causes of grain losses. Fumigation methods or controlled atmosphere (CA) treatments usually require sophisticated technologies that are not affordable in subsistence farming. This study focused in testing an inexpensive and effective modified atmosphere (MA) chamber using standard liners and soaked grain as O2 scavenger. Freshly harvested wheat (14% m.c.) was bagged in 35 kg plastic raffia bags (non-hermetic). A stack of 13 bags was assembled inside a polyethylene liner of 70-micron thickness and dimensions of 1.0 m x 1.0 m x 1.8 m. The liner was closed by twisting, folding, and tying the opening with a rope. The airtightness was tested by a pressure decay test (PDT). Four treatments were evaluated, including a control (only dry grain) and three treatments with soaked grain as oxygen scavenger. Oxygen and CO2 concentrations were measured with a portable gas analyzer. Results indicated that the respiration rate of soaked grain was 120 to 150 times greater that that of dry wheat. The incorporation of a small quantity of soaked grain as oxygen scavenger (1% dry matter) resulted in a reduction of the oxygen concentration to less than 2%, creating a lethal atmosphere for insects. The PDTs of the chambers were from 0.15 to more than 19 min. The variability in the final O2 and CO2 concentration achieved in all the treatments was quite low in spite of the variability of the PDT. This would suggest that the effect of incorporating oxygen scavengers was of a much larger magnitude than the differences in airtightness observed. This study demonstrated that an effective MA chamber can be created using standard 70-micron polyethylene liner, a simple sealing method and sacrificing only small portion of soaked grain as oxygen scavengereng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherUniversity of Manitoba, Canadáes_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceProceedings of the 11th International Conference on Controlled Atmosphere and Fumigation in Stored Products. Canada, 22-27 august de 2021es_AR
dc.subjectAlmacenamiento Atmósfera Controladaes_AR
dc.subjectControlled Atmosphere Storageeng
dc.subjectControl de Plagas (prod alm)es_AR
dc.subjectStorage Products Pest Controleng
dc.subjectAgricultura de Subsistenciaes_AR
dc.subjectSubsistence Farmingeng
dc.subjectTrigoes_AR
dc.subjectWheateng
dc.titleTesting of an inexpensive modified atmosphere chamber for small farmers using soaked grain as oxygen scavengeres_AR
dc.typeinfo:ar-repo/semantics/documento de conferenciaes_AR
dc.typeinfo:eu-repo/semantics/conferenceObjectes_AR
dc.typeinfo:eu-repo/semantics/acceptedVersiones_AR
dc.description.origenEEA Balcarcees_AR
dc.description.filFil: Bartosik, Ricardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.es_AR
dc.description.filFil: Bartosik, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.description.filFil: Cardoso, Leandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.es_AR
dc.description.filFil: De la Torre, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.es_AR
dc.description.filFil: Abadía, Bernadette. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.es_AR
dc.description.filFil: Tulli, María Celia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.es_AR
dc.description.filFil: Taher, Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.description.filFil: Maciel, Gisele. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.subtypeponencia


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