Armazenamento de sementes de soja dessecadas e avaliação da qualidade fisiológica, bioquímica e sanitária

• Autor(a) principal: Lacerda, André Luiz De Souza
• Data de Publicação: 2003
• Outros Autores: Lazarini, Edson [UNESP], Sá, Marco Eustáquio De [UNESP], Valério Filho, Walter Veriano [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0101-31222003000400014; http://hdl.handle.net/11449/212618
• topic: soybean; storage; germination; vigour; healthy; soja; armazenamento; germinação; vigor; sanidade

The objective of the study was the evaluation of the physiologic, biochemical and sanitary characteristics of soybeans seeds after dessication with four dessicants, in different times, stored for six months and treated with fungicide. The experiment was carried out, in the Seed Laboratory, at UNESP - Ilha Solteira. The soybean plants of the cultivar IAC-15 were desiccated, in the agricultural year 1997/98, with: paraquat, diquat, paraquat + diquat (mixed in tank) and ammonium glufosinate at rates of 400, 300, 200+150 and 400 g.i.a. ha-1. starting in the R6 stage till R7, at five-day intervals. The seeds were harvested and placed in a dry chamber with relative humidity around 40% and temperature between 17 and 20ºC for six months. The analyses were carried out with non treated seeds and seeds treated with thefungicide thiabendazole (20 g.i.a/100 kg of seeds). The conclusions were: the seeds did not present enough physiologic qualities for commercialization, and the dessicant ammonium glufosinate presented, significantly, smaller germination values. The protein content was not affected by the dessication, however, for the ethereal extract there was reduction in this component in thes dessicated seeds. The product paraquat applied in the first times resulted in larger incidence of Fusarium spp. in the soybean seeds, while, for the Phomopsis spp. smaller indifferent incidence of the times of applications.