The present disclosure provides robust fertilizer particles suitable for fertigation. A composition comprising mineral oil, primary alkylamines and water-insoluble particles may coat fertilizer particles and make them suitable for fertigation. Furthermore, the coated particles display reduced dusting tendency. The coating composition may be applied as a thin, single, continuous layer covering the particle core. The coating may avoid surface film problems when the particles are dissolved in water, even if the very hydrophobic mineral oil is less dense than water. It may be counterintuitive to include water-insoluble particles in a fertilizer particle for fertigation, however the claimed particles may be dissolved to make a fertigation solution that avoid problems in tanks, nozzles and piping of the fertigation systems.