Inhibitory Effect of Nitrapyrin on Three Genera of Ammonia-Oxidizing Nitrifiers

Abstract

Five strains of Nitrosomonas and one each of Nitrosospira and Nitrosolobus were examined for sensitivity to the nitrification inhibitor nitrapyrin. Considerable variation in sensitivity was observed, with some strains about five times more resistant than others. Sensitivity to nitrapyrin varied more with strain than with genus.