Italian ryegrass [Lolium multiflorum Lam.] density and N fertilization on wheat [Triticum aestivum L.] yield in Argentina

Mostrar otras versiones (1)

Italian ryegrass [Lolium multiflorum Lam.] is an important and troublesome weed in cereal crops in Argentina. It is present in 46 percent of the wheat fields of the most important cropped area and its control is mainly performed by selective grass herbicides that represent a significant percentage o...

Descripción completa

Guardado en:
Detalles Bibliográficos
Otros Autores: Scursoni, Julio Alejandro, Palmano, Mauro Rubén, Notta, Agustín de, Delfino, Diego
Formato: Artículo
Lenguaje:Inglés
Materias:
ITALIAN RYEGRASS [LOLIUM MULTIFLORUM]
ITALIAN RYEGRASS-WHEAT COMPETITION
N FERTILIZATION
ALTERNATIVE AGRICULTURE
CROP PRODUCTION
CROP YIELD
FECUNDITY
FERTILIZER APPLICATION
GRASS
GROWTH RATE
HERBICIDE
MANAGEMENT PRACTICE
SEEDLING EMERGENCE
SPATIOTEMPORAL ANALYSIS
WEED CONTROL
WHEAT
ARGENTINA
LOLIUM
LOLIUM MULTIFLORUM
TRITICUM AESTIVUM
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2012Scursoni.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
Descripción
Sumario:Italian ryegrass [Lolium multiflorum Lam.] is an important and troublesome weed in cereal crops in Argentina. It is present in 46 percent of the wheat fields of the most important cropped area and its control is mainly performed by selective grass herbicides that represent a significant percentage of total production cost. Designing weed management strategies is necessary to reduce the dependence on herbicides. This requires improving our knowledge of the effect of different management practices such as N fertilization on weed-crop interactions. Given the importance of achieving a sustainable and efficient use of herbicides, field experiments were carried out at wheat field crops in Argentina between 2004 and 2006. The main objective was to evaluate the competitive effect of ryegrass at different densities on wheat yield and its components with different nitrogen fertilization levels. In addition, the effect of N fertilization on weed emergence, growth and fecundity was also studied. N fertilization increased ryegrass competitiveness. Ryegrass densities of 100 plants m -2 reduced wheat yield by 30 percent and 20 percent with and without N fertilization, respectively. N fertilization did not modify seedling emergence dynamics but increased ryegrass growth and fecundity. Individual fecundity was 190 and 118 seeds per plant on the average of fertilized and non-fertilized plots, respectively.
ISSN:0261-2194

Ejemplares similares