[Influence of different factors on the effect of Express in winter cereals and spring cereals]

agricultural soils application date avena sativa azote biomasa biomass biomasse botanical composition cereal crops chemical control composition botanique contenido de agua en el suelo crop yield cultivos de cereales cultivos de invierno cultivos de primavera culture d'hiver culture de printemps date d'application escarda especies field experimentation herbicidas herbicide herbicides hordeum vulgare humus lutte chimique malezas mauvaise herbe nitrogen rendement des cultures rendimiento de cultivos secale cereale soil types soil water content sol agricole species spring crops suecia sweden teneur en eau du sol tipos de suelos triticum aestivum type de sol weed control weeds winter crops