Fuente: WIPO "tomato" The invention relates to a composition comprising sulfur and a 2nd active ingredient (ai), in a ratio of 1000:1 – 1:100 (w/w; sulfur: 2nd ai). The invention further relates to a method for protecting a plant or plant part against a pest and/or for treating a plant and/or plant part and/or soil that is affected by a pest, comprising providing sulfur and 2nd ai. The invention further provides a use of sulfur for enhancing the activity of a 2nd ai against nematodes, fungi and/or oomycetes. The invention further provides a use of sulfur and 2nd ai.