Buglossoides arvensis L.

Abstract

Buglossoides arvensis L. (=Lithospermum arvense (L.) I.M. Johnston) comúnmente conocida como "Yuyo moro" o "Mijo de sol", es una Boraginaceae anual facultativa de invierno. En nuestro país su creciente expansión se atribuye a la expansión de la siembra directa en el sur bonaerense propiciando condiciones favorables tanto para la generación y perpetuación del banco de semillas en el suelo como para su emergencia e implantación. Las semillas presentan dormición fisiológica condicional dependiendo de factores ambientales al momento de formación y maduración de las mismas en las plantas madre. Su efecto como maleza está asociado a las mermas de rendimiento producidas en cereales de invierno, y a la pérdida de calidad comercial por aporte de "materia extraña en la comercialización". El control químico de la especie está basado fundamentalmente en el uso de herbicidas pertenecientes a la familia de las sulfonilureas.Buglossoides arvensis L. (=Lithospermum arvense (L.) I.M. Johnston) commonly known as ?Yuyo moro? or ?Mijo de sol?, is an annual winter facultative Boraginaceae. In our country its growing expansion is own to the direct seeding expansion in the south of Buenos Aires province, which promotes proper conditions for the generation and perpetuation of the seed bank in the soil as well as for their emergence and implantation. The seeds present conditional physiologic dormancy depending on environmental factors at the moment of their formation and maturation in the mother plants. The effect of this plant as weed is associated to the performance decreases produced in winter cereals and to the commercial quality loss by contribution of ?strange matter in the commercialization?. The species? chemical control is mainly based on the use of herbicides belonging to the sulfonilureas family.Buglossoides arvensis L. (=Lithospermum arvense (L.) I.M. Johnston) commonly known as "Yuyo moro" or "Mijo de sol", is an annual winter facultative Boraginaceae. In our country its growing expansion is own to the direct seeding expansion in the south of Buenos Aires province, whilch promotes proper conditions for the generation and perpetuation of the seed bank in the soil as well as for their emergence and implantation. The seeds present conditional physiologic dormancy depending on environmental factors at the momento of their formation and maturation in the mother plants. The effect of this plant as weed is associated to the performance decreases produced in winter cereals and to the commercial quality loss by contribution of "strange matter in the commercialization". The spesies´ chemical control is mainly based on the use of herbicides belonging to the sulfonilureas family.