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Physiological and sanitary performance of soybean seeds during storage after phosphine fumigation

To maintain the physical, physiological and sanitary qualities of soybean seeds during storage, efficient control of pests must be considered. Fumigation is a technique used to eliminate pests that infest stored seeds, but there is no information on possible toxic effects on the seed and the microor...

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Published in:Journal of seed science 2019-07, Vol.41 (3), p.280-285
Main Authors: Krzyzanowski, Francisco Carlos, Lorini, Irineu, Henning, Ademir Assis, França-Neto, José de Barros
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description To maintain the physical, physiological and sanitary qualities of soybean seeds during storage, efficient control of pests must be considered. Fumigation is a technique used to eliminate pests that infest stored seeds, but there is no information on possible toxic effects on the seed and the microorganisms in the seeds fumigated several times during storage. An experiment was conducted to ascertain its effect on germination, viability, and vigor (tetrazolium, accelerated aging, and seedling length tests) and on the microorganisms associated with the soybean seeds. The study was conducted on soybean seeds which were exposed to three phosphine fumigations over the period of 210 days of storage in a completely randomized statistical design. The treatments were three concentrations of phosphine (PH3.m-3) at 1.0, 2.0 and 3.0 g.m-3 and the control without application of phosphine, applied three times on the same group of the seeds throughout the storage period. The fumigation chambers were made of plastic sheet impermeable to phosphine gas. Seed fumigation did not modify the physiological performance of the soybean seeds. It also did not affect the viability of the fungi and bacteria in the seeds. Resumo: Para manter as qualidades física, fisiológica e sanitária das sementes de soja durante o armazenamento, deve-se considerar o controle eficiente de pragas. O expurgo é uma técnica usada para eliminar pragas que infestam sementes armazenadas, mas não há informações sobre possíveis efeitos fitotóxicos ou efeitos sobre os microrganismos nas sementes expurgadas várias vezes durante o armazenamento. Um experimento foi conduzido para verificar o efeito na germinação, viabilidade e vigor (tetrazólio, envelhecimento acelerado e testes de comprimento de plântulas) e na viabilidade dos microrganismos associados às sementes de soja. O estudo foi conduzido em sementes de soja que foram expostas a três expurgos com fosfina durante o período de 210 dias de armazenamento, em delineamento estatístico inteiramente casualizado. Os tratamentos foram três concentrações de fosfina (PH3) .m-3 a 1,0, 2,0 e 3,0 g.m-3 e o controle, sem aplicação de fosfina, aplicados três vezes nas mesmas sementes ao longo do período de armazenamento. As câmaras de expurgo foram feitas de lona plástica impermeável ao gás fosfina. O expurgo das sementes não modificou o desempenho fisiológico das sementes de soja. Também não afetou a viabilidade dos fungos e das bactérias presentes nas sementes.
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Seed Sci</addtitle><date>2019-07</date><risdate>2019</risdate><volume>41</volume><issue>3</issue><spage>280</spage><epage>285</epage><pages>280-285</pages><issn>2317-1537</issn><issn>2317-1545</issn><eissn>2317-1545</eissn><abstract>To maintain the physical, physiological and sanitary qualities of soybean seeds during storage, efficient control of pests must be considered. Fumigation is a technique used to eliminate pests that infest stored seeds, but there is no information on possible toxic effects on the seed and the microorganisms in the seeds fumigated several times during storage. An experiment was conducted to ascertain its effect on germination, viability, and vigor (tetrazolium, accelerated aging, and seedling length tests) and on the microorganisms associated with the soybean seeds. The study was conducted on soybean seeds which were exposed to three phosphine fumigations over the period of 210 days of storage in a completely randomized statistical design. The treatments were three concentrations of phosphine (PH3.m-3) at 1.0, 2.0 and 3.0 g.m-3 and the control without application of phosphine, applied three times on the same group of the seeds throughout the storage period. The fumigation chambers were made of plastic sheet impermeable to phosphine gas. Seed fumigation did not modify the physiological performance of the soybean seeds. It also did not affect the viability of the fungi and bacteria in the seeds. Resumo: Para manter as qualidades física, fisiológica e sanitária das sementes de soja durante o armazenamento, deve-se considerar o controle eficiente de pragas. O expurgo é uma técnica usada para eliminar pragas que infestam sementes armazenadas, mas não há informações sobre possíveis efeitos fitotóxicos ou efeitos sobre os microrganismos nas sementes expurgadas várias vezes durante o armazenamento. Um experimento foi conduzido para verificar o efeito na germinação, viabilidade e vigor (tetrazólio, envelhecimento acelerado e testes de comprimento de plântulas) e na viabilidade dos microrganismos associados às sementes de soja. O estudo foi conduzido em sementes de soja que foram expostas a três expurgos com fosfina durante o período de 210 dias de armazenamento, em delineamento estatístico inteiramente casualizado. Os tratamentos foram três concentrações de fosfina (PH3) .m-3 a 1,0, 2,0 e 3,0 g.m-3 e o controle, sem aplicação de fosfina, aplicados três vezes nas mesmas sementes ao longo do período de armazenamento. As câmaras de expurgo foram feitas de lona plástica impermeável ao gás fosfina. O expurgo das sementes não modificou o desempenho fisiológico das sementes de soja. 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subjects germination
Glycine max
microorganisms
pests
PLANT SCIENCES
vigor
title Physiological and sanitary performance of soybean seeds during storage after phosphine fumigation
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