Minnesota Plant Diseases. 



429 



Sulphate, 



of iron copper and alum- 

 inum, 239 

 of magnesium, 240 

 Sulphide of potassium, 220 

 Sulphur and lime, 227 

 for downy mildew of onion, 334 

 Sulphur for asparagus rust, 319 

 for onion smut, 320 

 for powdery mildew of cu- 

 cumber, 325 

 for powdery mildew of rose, 379 

 for powdery mildew of 



strawberry, 324 



for powdery mildew of 



vines, 366 



flowers of, 227 



fungus (Fig. 124), 17s, 252, 253 

 Sulphuric acid and iron sul- 

 phate, 221 

 for anthracnose of grape, 367 

 Sumacs, leaf curl fungi on, 121 

 Sun scalds, wounds of, 47 

 Sunflowers, downy mildew of, 112 

 powdery mildew of, 396 

 rusts of (Fig. 206), 



160, 373, 374, 375, 389 

 Susceptibility toward disease, 206 

 Sweet William, sterile-fungus 



rot of, 329 



Swimming spores of fish mold 



(Fig. 33), 72 



Synchytrium anemones, 398, 399 



decipiens (Fig. 211), 398 



taraxaci, 399 



Tamaracks, scaly Lentinus rot, 267. 



Tanning and bacteria, 196 



Tape worms, degeneration in, 10 



Taphrina, species of, 272 



Tar ringing, to prevent insect 



wounds, 205 



spots and allies, 142 



spots of maple (Fig. 133), 



268, 269 

 spots of maple and willow, 136 

 spots of willow (Fig. 133), 270 

 to cover wounds, 205 



used against timber rot, 87 



Temperature, influence on bac- 

 teria, 192 

 Terfeziacete, 123 



Texas fever of cattle, slime 



molds of, 198 



Thalictrum, rust of, 390 



Thelephora laciniatum, 172, 243 



terrestris, 243 



Thelephoracex (Fig. 82), 171 



Thorn trees, leaf rust of, 349 



Threads, sterile, in cup of cup 



fungi (Fig. 62), . 141 



sucker, 61 



Thrush, caused by yeast allies, 120 



Ties, railroad, gill fungus on 



(Fig. 116), 236 

 railroad, rot of (Fig. 116), 



87, 236, 239 



Tilletia tritici (Fig. 147) 295, 296 



Timber rots, 235, 260 



birch-fungus, 254 



bird's-nest fungi, 187 



club fungus, 244 



coral fungus, 244 



creeping pore fungus, 253 



dry rot, 245 



elm Pleurotus, 265 



false tinder fungos, 250 



fatty Pholiota, 262 



flattened pore fungus, 251 



gill fungus, 179 



green cup fungus, 267 



green mold. 270 



hairy pore fungus, 259 

 methods of attack upon 



wood cells (Fig. 38), 85,86 



Nectria of red knot, 271 



oak Dasdalea, 257 



parchment pore fungus, 258 



partridge wood rot, 242 



pine Lenzites, 266 



pitch-stemmed pore fungus, 259 



prevention of, 237, 238, 239, 240 



ring scale of pine, 256 



scaly Lentinus, 267 



scaly pore fungus, 254 



scurfy Pholiota, 263 



shoe string fungus, 260 



smooth shelf, 172 



Stereum wood rot, 240 



sulphur fungus, 252 



tinder fungus, 251 



Trametes wood rot, 256 



use of cresote to prevent, 239 



