Data/hora: 16/06/2024 06:44:59

Provedor de dados: | 65
País: | Brazil
Título: | Endozoochorous dispersal of seeds of weedy rice (Oryza sativa L.) and barnyardgrass (Echinochloa crus-galli L.) by cattle
Autores: | Viero,João Luis Carricio; Schaedler,Carlos Eduardo; Azevedo,Eduardo Bohrer de; Santos,João Vitor Ail dos; Scalcon,Ricardo de Mello; David,Diego Bitencourt de; Rosa,Fabiane Quevedo da.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | Endozoochory; Feces; Paddy rice; Seed ingestion; Ruminants.
Resumo: | ABSTRACT: The objective of this study was to evaluate endozoochory dispersal, recuperation, and germination of weedy rice (Oryza sativa L.) and barnyardgrass (Echinochloa crus-galli L.) seeds passed through the digestive system of cattle. The experiment was divided into two phases: first, the daily seed recuperation rate was determined after passing through the digestive system of six steers. Each animal was dosed individually with 1000 weedy rice seeds and 13,818 barnyardgrass seeds, and these seeds were subsequently collected from feces. In the second phase, seed germination and emergence rate after passing or not passing through the digestive system of cattle were determined in two types of substrates (fecal plaque and soil) in a 2×2 factorial design. Seed recuperation in feces showed sigmoid behavior with maximum recovery on the second day after dosage. The recuperation of the species in the feces was 50.9% and 23.4% for weedy rice and barnyardgrass, respectively, which shows that both have potential endozoochory dispersal. However, seed germination of these species reduced after they passed through the digestive system, and they presented inferior emergence in the fecal plaque compared to the soil. The quarantine period for animals that ingest weedy rice and barnyardgrass seeds should be at least 6 and 7 days, respectively.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800201
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20170650
Formato: | text/html
Fonte: | Ciência Rural  v.48 n.8 2018
Fonte: | info:eu-repo/semantics/openAccess