Ifumbire mvaruganda, ni ukuvuga ifumbire mvaruganda, cyangwa ifumbire mvaruganda muri make, ni ifumbire irimo intungamubiri imwe cyangwa nyinshi zikenewe mu mikurire y’ibihingwa, bikozwe nuburyo bwa shimi na / cyangwa umubiri. Ifumbire mvaruganda isanzwe irimo ifumbire ya azote, ifumbire ya fosifate, ifumbire ya potas, ifumbire mvaruganda n’ifumbire mvaruganda. Ifumbire igira uruhare runini mu musaruro w’ubuhinzi, kuko ishobora kongera umusaruro w’ibihingwa, kuzamura uburumbuke bw’ubutaka, guteza imbere imikurire y’ibihingwa, kugenga imikurire y’ibihingwa, ndetse bikagira n'ingaruka zo kurwanya udukoko n'indwara.