superfosfato triplo como via de distribuição de sementes de brachiaria brizantha para renovação de pastagens na amazônia triple superphosphate as a means to distribute brachiaria brizantha seeds for pasture renovation in the amazon region

Clicks: 275
ID: 202965
2009
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Abstract
Objetivou-se estudar o efeito de dez tempos de contato (0, 3, 6, 12, 24, 36, 48, 72, 96 e 120 horas) do fertilizante químico granulado superfosfato triplo com sementes de Brachiaria brizantha, cv. Marandu, na sua qualidade fisiológica (germinação e vigor). O delineamento experimental utilizado foi o inteiramente casualizado, com quatro repetições, tanto para a condição de laboratório quanto para a condição de viveiro. O tempo de contato do fertilizante com as sementes teve efeito significativo sobre todas as variáveis analisadas, portanto, provavelmente o resíduo do ácido fosfórico do fertilizante teve influência direta e negativa na germinação e no vigor, comprovada pelos resultados de germinação, primeira contagem, teor de água, condutividade elétrica, emergência e índice de velocidade de emergência. Assim, para obtenção de uma população adequada de plantas, pode-se misturar as sementes da forrageira com o superfosfato triplo, desde que a semeadura seja imediata, o que diminui as perdas na qualidade fisiológica.
This study aimed to determine the effect of 10 contact times of a granular triple superphosphate chemical fertilizer with Brachiaria brizantha, cv. Marandu seeds on seed physiological quality (germination and vigor). Contact times were: 0, 3, 6, 12, 24, 36, 48, 72, 96, and 120 hours. A completely randomized experimental design was used, with four replicates, under both laboratory and nursery conditions. In all variables studied, a significant effect of the treatments employed was observed: as contact time with the fertilizer increased, the phosphoric acid residue from the fertilizer probably had a direct and negative effect on germination and vigor, as observed by germination, first count, water content, electric conductivity, emergence, and emergence velocity index results. Therefore, in order to obtain an adequate population of plants, the forage seeds can be mixed with the triple superphosphate since seeding is performed immediately, reducing physiological quality losses.
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lima2009revistasuperfosfato Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Eduardo do Valle Lima;José Cláudio de Sousa Tavares;Eliane Carvalho Silva;Patrícia da Silva Leitão-Lima
Journal european journal of lipid science and technology
Year 2009
DOI
10.1590/S1516-35982009000500003
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500003
Keywords
emergence contact time vigoranimal culture

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