New tetramatos espiroc u00edclicamente replaced with 4 ', 4' - dioxaespiro of formula (i), in which a, B, G, M, N, W, X, y and Z have the meanings cited in the description, several procedures for their Preparation and their use as antiparasitic agents and / or herbicides.The Invention also are subject to Selective herbicides containing agents, on the one hand, tetramatos espiroc u00edclicamente replaced with 4 ', 4' - dioxaespiroy, a compound that improves the Tolerance in crop plants.The present Invention also relates to novel water-soluble espiroc u00edclicamente concentrates tetramatos replaced with 4 ', 4' - dioxaespiroy their enols, procedures for the preparation of these formulations and their use as pesticides and / or herbicides.The present Invention also refers to the Improvement of the action of Plant Protection agents containing in particular tetramatos espiroc u00edclicamente replaced with 4 ', 4' - dioxaespiro - through the addition of Ammonium or phosphonium Salts and eventually promoted the penetration, the corresp Ondientes agentsProcesses for their Preparation and their use in titoprotecci u00f3n as Insecticides and acaricides or / and / or to prevent the growth of unwanted plants.Nuevos tetramatos sustituidos espirocíclicamente con 4'4'-dioxaespiro de la fórmula (i), en la que A, B, G, m, n, W, X, Y y Z tienen los significados citados en la descripción, a varios procedimientos para su preparación y a su uso como agentes antiparasitarios y/o herbicidas. También son objeto de la invención agentes herbicidas selectivos que contienen, por un lado, tetramatos espirocíclicamente sustituidos con 4'4'-dioxaespiroy, por otro, un compuesto que mejora la tolerancia en plantas de cultivo. La presente invención se refiere también a nuevos concentrados hidrosolubles de tetramatos sustituidos espirocíclicamente con 4'4'-dioxaespiroy sus enoles, a procedimientos para la preparación de estas formulaciones y a su uso como pesticidas y / o herbicidas. La presente
