The effect of two benzimidazole fungicides, 2-(4-thiazolyl) benzimidazole (thiabendazole) and methyl l-(butylcarbamoyl)-2-benzimidazole carbamate (benomyl) on growth and foliar element accumulation of 'Penncross' and 'Seaside' cultiyars of. Agrostis palustris Huds. and 'Merion' cultivar of Poa pratensis L: was investigated ina series ,of greenhouse and field plot experiments. In the greenhouse, soils.with varying concentrations of the materials were seeded. with 'Penncross,' and 'Merion.In the field a 2 year old plant ing of the 'Seaside' cultivar (Agrostis palustris) was sprayed with thiabendazole, and benomyl formulations. Criteria employed for determining growth effectswere dry weight of foliage, dry weight of roots, and macro-and micro-element accumulation by the. foliage, Dry foliar weights of both Poa and Agrostis were increased by soil amendment with benomyl and thiabendazole, With Agrostis benomyl soil amendment increased foliar Κ and decreased P, Ca, Mg, Mn, B, and Na.Thiabendazole amendment increased Κ while decreasing Mg, Μn, and Na.In the field repeated foliar spray applications of benomyl increased Κ and Mg and decreased Cu and B.