Ca, Mg, Na, K and P contents of 3 plant tissues obtained by H2SO4‐H2O2‐Li2SO4‐Se peroxidation digestion were compared with those determined by mixed acid (HNO3‐H2S04‐HC104) and dry ashing procedures. Differences between methods were not consistent between elements or tissue types but the mixed acid digestion generally yielded higher Ca, Mg and P values than did dry ashing and peroxidation. Tissue K contents estimated by both wet digestion techniques were not significantly (P ≤0.05) different. Differences in Na values between digestion methods were highly inconsistent between tissue types and the precision of the Ma data was poor. N contents determined by peroxidation digestion and a conventional Kjeldahl method agreed closely.