| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000455209 |
| ISSN: | 0103-9016 |
| Autores: | Cechin, Joanei1 Schmitz, Maicon Fernando1 Hencks, Jonas Rodrigo2 Vargas, Andres Antonio Monge3 Agostinetto, Dirceu1 Vargas, Leandro4 |
| Instituciones: | 1Universidade Federal de Pelotas, Departamento de Fitossanidade, Capao do Leao, Rio Grande do Sul. Brasil 2Universidade Estadual de Maringa, Departamento de Agronomia, Maringa, Parana. Brasil 3Universidad de Costa Rica, Centro para Investigaciones en Granos y Semillas, San José. Costa Rica 4Empresa Brasileira de Pesquisa Agropecuaria, Trigo, Passo Fundo, Rio Grande do Sul. Brasil |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 3 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Italian ryegrass (Lolium multiflorum Lam.) is a weed broadly found in fields cultivated with wheat and barley crops. Seed inputs into the soil before harvesting winter crops increase seed bank, ensuring survival. This study evaluated the persistence of Italian ryegrass seeds subjected to burial depths over time. Experiments were carried out in the field for two years in randomized block experimental design with four repetitions. Dormant seeds harvested from mother-plants were put in nylon bags containing soil. Previously, seed viability was evaluated in a 1 % tetrazolium solution, and 50 viable seeds by repetition were buried at 0.5, 5.0, 10, and 20 cm depths. Seed persistence was evaluated by the percentage of deteriorated and remaining seeds, non-dormant seeds, abnormal seedlings, and viable and non-viable dormant seeds at 0, 30, 60, 90, 180, 360, 540, and 720 days after burial (DAB). Seed persistence increased at 10 and 20 cm of burial depth compared to seeds in the soil layers up to 5 cm. Moreover, burial depth at 10 and 20 cm showed lower percentage of deteriorated seeds (10 % lower) compared to 0.5 cm at 360 DAB. For non-dormant seeds, a higher percentage was found at 90 DAB, regardless of seed burial depth. Dormancy breakage occurred until 180 DAB, and more rapidly at 10 and 20 cm depths. At 540 DAB, more than 95 % of seeds were unviable, demonstrating short persistence of Italian ryegrass in the soil seed bank |
| Disciplinas: | Agrociencias |
| Palabras clave: | Fitotecnia, Lolium multiflorum, Profundidad de siembra, Bancos de semillas |
| Keyword: | Crop husbandry, Lolium multiflorum, Sowing depth, Seed banks |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
