Data on yield, test weight, and rusts attack intensity marks, in the two regional wheat trials at La Platina Exp. Sta. (Santiago) are given. The trials were artificially inoculated with *Puccinia recondita *and *P. graminis; P. striiformis *infection was natural. Marks for *P. striiformis *varied from 0 to 40%; for *P. recondita*, from 0 to 100%; and for *P. graminis*, from 1 to 100%. Spearmans range correlations were: r = -0.71 and -0.67, for the sum of the three rusts and yield; r = -0.55 and -0.46, for the sum of the three rusts and test weight; also, partial correlations between marks for each rust and yleld and test weight are presented. Correlations between yield and test weight were r = 0.81 and 0.60. For each percentage unit increase in the leve) of total rust infection, yield decreased in 0.14% and 0.13%, when comparing the wheats in thethirdwith higher yields with those in de third with lower yields, in each trial, respectively. |