Abstract: Spraying boom support for agricultural sprayers, whether trailed, self-propelled and/or airborne, which includes identical articulated arms arranged on either side of the sprayer. Said arms are extended transversely to the direction of advance of the sprayer, and are coupled in an articulated manner to a central support section of the chassis of said sprayer. Each articulated arm is comprised of bar sections formed by a composite material consisting of a reinforcing agent selected from carbon fiber, fiberglass, aramid fiber, boron fiber or a combination thereof, and a matrix of epoxy, vinyl ester, phenolic, polyester resins or thermoplastic material. At its ends, the bar sections have metal nodes that make up the joints and links, also fulfilling the role of taking the concentrated loads of them and distribute them in the bar sections of composite material.