RESUMOO tratamento de sementes de soja com fungicidas vem sendo utilizado como importante ferramenta no controle de patógenos. Nesse trabalho, objetivou-se estudar o desempenho de sementes de soja tratadas com fungicidas e peliculizadas, antes e após o armazenamento. Foram utilizados cinco lotes de sementes, cultivar Monsoy 6101, submetidos aos tratamentos: thiabendazole+thiram sem polímero, carbendazin+thiram sem polímero, sem fungicida (testemunha) sem polímero, além desses tratamentos realizados via peliculização (com polímero). A qualidade fisiológica e sanitária das sementes foi avaliada inicialmente e após seis meses de armazenamento em condições ambientais, pelas seguintes determinações: teor de água, teste de germinação, emergência em bandeja, teste de frio e de sanidade. Conclui-se que a peliculização, em associação com fungicidas, não afeta a qualidade fisiológica das sementes de soja e o tratamento de lotes de sementes de soja com os fungicidas thiabendazole+thiram e carbendazin+thiram melhora seu desempenho e qualidade sanitária.Termos para indexação:Glycine max, thiabendazole, thiram, carbendazin, polímeros. ABSTRACTThe treatment of soybean seeds by fungicides has been used as an important tool in pathogen control. The objective of this work was to verify the performance of soybean seeds treated with fungicide and film coating, prior and after storage. Five seed lots, cultivar Monsoy 6101, were treated with thiabendazole+thiram without polymer, carbendazin+thiram without polymer, without fungicide (control), without polymer, and treatments by film coating (with polymer). The physiological and sanitary quality of the seeds was evaluated initially and after six months storage, under environmental conditions, according to the following characteristics: water content, test of germination and emergence on tray, blotter test and cold test. The film coating associated with fungicides does not affect the physiological quality of soybean seeds and the soybean seed treatment with the fungicides thiabendazole+thiram and carbendazin+thiram improves performance and sanitary quality.
RESUMOO objetivo neste trabalho foi avaliar o desempenho de sementes de soja [Glycine max (L.) Merrill] tratadas com fungicidas em associação à peliculização, durante o armazenamento. Sementes da cultivar Pintado foram tratadas com thiram+thiabendazole e parte das sementes não receberam esse tratamento. As sementes foram ainda submetidas à peliculização com os polímeros AGL 205 ou AGL 202 e parte das sementes não foram peliculizadas. Posteriormente, as sementes foram acondicionadas em embalagens de papel multifoliado e armazenadas durante nove meses sob condições ambientais, sendo que as qualidades fisiológica e sanitária das sementes foram avaliadas inicialmente e a cada três meses de armazenamento pelas seguintes determinações: teor água das sementes; teste de germinação; teste de frio; emergência em areia/solo em bandeja; teste de envelhecimento acelerado; e sanidade. Conclui-se que as sementes de soja tratadas com thiram+thiabendazole têm um melhor desempenho durante o armazenamento. Os polímeros não afetam a qualidade fisiológica das sementes e promovem melhor aderência dos fungicidas, sem alterar os efeitos dos mesmos. Termos para indexação:Glycine max, polímeros, tratamento químico, thiabendazole, thiram. ABSTRACTThe objective of this work was to avaluate the performance of soybean seeds treated with fungicides in association with film coating during storage. Seeds of the cultivar Pintado were used, being submitted or not to application of thiram+thiabendazole and / or to film coating with the polimers AGL 205 or AGL 202. Later, the seeds were packed into multilayer paper packages and stored for nine months under non-conditioned warehouse conditions. Physiological and sanitary qualities of the seeds were evaluated initially and at every three months of storage by of the following determinations: seed water content; germination test; cold test; emergence in sand/soil substrate test; accelerated aging test; and sanity test. Soybean seeds treated with thiram+thiabendazole had the best performance during storage. The polymers did not affect the physiological quality of the seeds and promoted better adherence of the fungicides, without affecting their effects.
The purpose of this study was to follow the progression of gross and histologic lesions and apoptosis events in Lawsonia intracellularis-infected enterocytes through the course of the disease, proliferative enteropathy (PE). Thirty 5-week-old pigs were divided into 2 groups: 20 challenged and 10 control animals. Groups of 3 pigs, 2 challenged and 1 control, were euthanized at 1, 3, 5, 8, 11, 15, 19, 24, 29, and 35 days after inoculation. Complete necropsies were performed with gross evaluation. Tissue samples from different sites of the gastrointestinal tract and other visceral organs were collected for routine histologic staining and for immunohistochemistry (IHC) for L. intracellularis. In addition, caspase-3, terminal deoxyuridine nick-end labeling assay, and electron microscopy were performed in ileum samples. Macroscopic and histologic lesions suggestive of PE were first detected 11 days after infection and continued through day 24. L. intracellularis antigen was first detected in the intestine by IHC on day 5 after inoculation, and the bacterium was first detected by transmission electron microscopy on day 15. Positive IHC staining for [L. intracellularis] and enterocyte proliferation, but no gross lesion, were detected on day 29. All 3 pigs euthanized on day 35 were grossly and histologically normal and IHC negative. Hyperplastic crypts in challenge pigs had more apoptotic cells on days 15, 19, and 24 postinfection ( P < .05) compared to control pigs. Our results demonstrated the progression of lesions and infection by L. intracellularis and that inhibition of enterocyte apoptosis is not involved in the pathogenesis of proliferative enteropathy.
RESUMOO uso de produtos fitossanitários aplicados via sementes é uma prática rotineira para a cultura do milho. No entanto, a crescente preocupação com o meio ambiente e com a segurança humana torna necessário o desenvolvimento de tecnologias que venham reduzir os riscos com a manipulação destes fitoprotetores, sendo este um dos principais objetivos do uso de polímeros. Assim, com este trabalho, objetivou-se avaliar a qualidade fisiológica e sanitária de sementes de milho submetidas a tratamentos fitossanitários em associação com diferentes polímeros, durante o armazenamento. Para tanto, as sementes de milho dos híbridos AG9010 e AG122 foram tratadas ou não com inseticida carbofuran (nome comercial: Furazin) na dosagem de 1,5 L/100 kg de sementes e em mistura com o fungicida fludioxonil (nome comercial: Maxin) na dosagem de 100 mL/100 kg de sementes. Durante o tratamento das sementes foram utilizados ou não os polímeros 1519 na dosagem de 50 mL/100 kg de sementes e 1080 na dosagem de 100 mL/100 kg de sementes. As sementes foram acondicionadas em embalagens de papel multifoliado e armazenadas durante seis meses sob condições ambientais. A qualidade das sementes foi avaliada antes e após o armazenamento, por meio das seguintes determinações: teste de germinação, teste de frio, teste de emergência em bandeja, determinação de sementes infestadas, índice de velocidade de emergência e teste de sanidade. Conclui-se que a peliculização não afeta a qualidade fisiológica das sementes de milho e a aplicação de Furazin e/ou Maxin, sobre as sementes de milho, é tecnicamente viável. Sementes de milho de alta qualidade inicial podem ser tratadas e armazenadas por seis meses, sem que haja comprometimento de sua qualidade fisiológica. Termos para indexação:Peliculização, Zea mays, inseticida, fungicida, fludioxonil, carbofuran. ABSTRACTThe use of phytosanitary chemicals applied via seeds is a routine practice for corn crop, nevertheless, the growing concern about environment and human security make it necessary to develop new technologies which can reduce the handling risks of these phytoprotectors, therefore, this is one of the main objectives of polymer use. Thus, this work was intended to evaluate the physiological and sanitary quality of corn seeds submitted to phytosanitary treatments in association with different polymers during storage. So, the corn seeds of the hybrids AG9010 e AG122 were treated or not with the insecticide carbofuran (Furazin) at the dosage of 1.5 L/100 kg of seeds and in mixture with the fungicide fludioxonil (Maxin) at the dosage of 100 mL/100 kg of seeds. Over the treatment of the seeds, polymers 1519 were utilized or not at the dosage of 50 mL/100 kg of seeds, and polymer 1080 at the dosage of 100 mL/100 kg of seeds. The seeds were packed into multifoliated paper packages and stored for six months under environmental conditions, seed quality being evaluated before and after storage by means of the following determinations: germination test, coiled test, tray germination test, infested seed determina...
The study investigated the influence of chia consumption on inflammation, oxidative stress, and lipid profiles in female ovariectomized rats fed a high-fat diet.
Insecticide treatment, film coating and rizobium soybean seed inoculationThe treatment of soybean seeds with chemical products to control pests may impair seed quality and the establishment of the rizobium-plant symbiosis. The aim of this work was to evaluate the performance of soybean seeds treated with insecticides and film coating, as well as the nodulation and plant growth. Soybean seeds were treated with insecticides and polymer in a 6x2 factorial scheme. The insecticides used in the treatments were carbosulfan, clotianidina, fipronil, imidacloprid, tiametoxan and a control without insecticides. Insecticides were applied with and without the polymer, as well as the control. Seeds were evaluated by the germination test, cold test and seedling emergence. In addition, they were inoculated with the strains BR86 and BR96, separately, and sowed in Leonard pots. During the flowering, the plants were evaluated using the number and dry matter of nodules and of the aerial part. The insecticide treatments can Recebido para publicação em abril de 2009 e aprovado em setembro de 2010 1 Parte da tese apresentada à Universidade Federal de Lavras pelo primeiro autor para obtenção do título de doutor.
RESUMO -Objetivando avaliar as alterações que ocorrem durante o período de dormência das sementes de arroz irrigado, conduziram-se três experimentos sob diferentes condições de armazenamento. Sementes da cultivar Rio Grande, com alta intensidade de dormência pós-colheita, foram acondicionadas em sacos de papel multifoliado e armazenadas por um período de 12 meses, em câmara fria e seca (10ºC e 50% de umidade relativa) em armazém convencional em três localidades. Trimestralmente foram feitas avaliações por meio do teor de água, teste de germinação, alterações nos
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