Data/hora: 12/06/2024 12:27:08

Provedor de dados: | 95
País: | Brazil
Título: | Physiological potential of Brachiaria brizantha cv. Marandu seeds kept in contact with phosphatic fertilizers
Autores: | Peres,Amanda Ribeiro; Vazquez,Gisele Herbst; Cardoso,Renata Danielle.
Data: | 2012-01-01
Ano: | 2012
Palavras-chave: | Phosphorus; Seed-fertilizer mixture; Exposure period; Vigor.
Resumo: | The effect of mixture of seeds of Brachiaria brizantha, cv. Marandu, with different sources, granulometry, and phosphatic fertilizer doses during various periods of exposure on the physiological potential of the seeds has been assessed. The treatments consisted in seed exposure during periods of 0, 3, 6, 12, 24, 36, 48, 72, 96, and 120 h to the following fertilizers: ground granulated single superphosphate (SS), and powdered (SSp); and ground granulated ammonium monophosphate (AMP), at doses of 40 and 80 kg P2O5 ha-1. Tests of germination, tetrazolium, moisture content, and vigor (first count, electrical conductivity, emergence, emergence speed, and fresh mass of seedlings) were performed. It has been concluded that seed physiological potential of B. brizantha cv. Marandu is reduced with increase on the exposure period to phosphatic fertilizer. Such effect, however, is dependent on the product source, granulometry, and dose. SSp was the most harmful to seeds, followed by SSp and AMP, respectively. Moreover, considering a 60% germination rate as acceptable, it may be inferred that seeds can be kept in contact with AMP and SSp, in dose of 80 kg of P2O5 ha-1, respectively, for periods of 71.2 and 16.2 hours.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300009
Editor: | Associação Brasileira de Tecnologia de Sementes
Relação: | 10.1590/S0101-31222012000300009
Formato: | text/html
Fonte: | Revista Brasileira de Sementes  v.34 n.3 2012
Fonte: | info:eu-repo/semantics/openAccess