[Factors influencing the effect of a glyphosate herbicide against Elymus repens in stubblefields]

cereal crops chemical control clima climat climate crop yield cultivos de cereales date de traitement elymus repens escarda fecha de tratamiento field experimentation glifosato glyphosate herbicidas herbicide herbicides humus lutte chimique malezas perennes mauvaise herbe vivace oil crops perennial weeds plantas oleaginosas precipitation rendement des cultures rendimiento de cultivos soil types suecia sweden tipos de suelos treatment date type de sol weed control