502 



Index 



Pink-rot, 49, 69, 210. 

 Pip, 304. 

 Piped rot, 361. 

 Piqueria, 407. 

 Piricularia grisea, 295. 



oryzae, 300, 339. 

 Pithiness, 178. 

 Plantain, 135. 



Plasmodiophora brassicse, 168. 

 Piasmopara viticola, 125. 

 Platycodon, 407. 

 Plectodiscella veneta, 102. 

 Plenodomus canker, 57. 



destruens, 248. 



fuscomaculans, 57. 

 Pleospora gramineum, 282. 



pisi, 213. 



tropceoli, 427. 

 Pleurotus, 367. 

 Pleuteus, 367. 



Plum, 87, 88, 90, 96, 97, 98, 367. 

 Poa, 278, 338. 

 Pod black-rot, 135. 

 Pod-blight, 158. 

 Pod-rot, 157. 

 Pod-spot, 152, 201. 

 Podosphsera leueotrichia, 50. 



oxyacanthse, 51, 77, 91. 

 Pole-rot, 259. 

 Pollen-bHght, 395. 

 Polyporus, 361, 367. 



betulinus, 382. 



obtusus, 362. 



pergamenus, 379. 



roseus, 384. 



schweinitzii, 371. 



squamosus, 364. 



sulphureus, 361. 



versicolor, 374, 382. 

 Polystictus, 368. 

 Polythrineium, 328. 

 Pomaceous fruits, 31, 368, 369. 

 Poplar, 88, 359, 365, 367, 368, 369, 



371, 380, 381, 401. 

 Poria, 368, 402. 

 Portulaca, 407. 

 Potassium sulfide, 448. 

 Potato, 10, 22, 23, 24, 25, 26, 87, 



163, 217. 

 Potato spraying, 236. 



seed disinfection, 240. 



Potentilla, 407. 

 Powdery gray-rot, 420. 

 Powdery-mildew, 50, 67, 77, 91, 

 101, 117, 122, 134, 159, 165, 

 173, 187, 195, 213, 241, 242, 

 283, 300, 307, 317, 337, 338, 

 342, 376, 381, 394, 407, 412, 

 420, 421, 426, 429, 431, 435, 

 436, 439. 

 Powdery scab, 224. 

 Power sprayer, 456. 

 Prevention of plant diseases, 12, 13. 



methods, 14. 



historical, 3, 13. 

 Primrose, 429. 

 Primula, 407. 

 Privet, 408, 430. 

 Proprietary fungicides, 449. 

 Pro thallium-blight, 422. 

 Protocoronospora nigricans, 338. 

 Prune, 87. 

 Prunus, 23, 369. 

 Pseudomonas, 199, 294, 408, 422. 



angu latum, 257. 



aptatum, 164, 427. 



avenae, 299. 



campestris, 165. 



citri, 137. 



erodii, 422. 



glycineum, 337. 



juglandis, 404. 



lachrymans, 185. 



maculicolum, 173. 



malvacearum, 349. 



medicaginis, 324. 



phaseoH, 155. 



pisi, 213. 



pruni, 74, 79, 90, 101. 



savastanoi, 147. 



solanacearum, 159, 174, 192, 230, 

 253, 260. 



stewarti, 291. 



tabacum, 257. 



translucens, 282, 319. 



tumefaciens, 87, 104, 350, 369. 

 420. 



woodsii, 416. 

 Pseudopeziza medicaginis, 321. 



ribis, 115. 



trifolii, 331. 

 Pseudotsuga, 368, 373. 



