1056 



Journal of Agricultural Research 



Vol. VI 



Page 



Phleum pratense — 



analysis of, for phosphorus 493 



host plant of Puccinia graminis avenae 815 



host plant of Puccinia phleipratensis 815 



infection of, by Puccinia graminis 813-816 



inoculation of, with Puccinia graminis 



avenae 813-816 



results of inoculation of, with Puccinia gra- 

 minis 814 



Phoma socio, description of 86 



Phorodon humuli, host insect of Aphidoletes 



meridionalis 884 



Phosphate — 



effect of, added to soil, on yield 495-497 



mineral — 

 comparison of productive powers of . . . . 497-502 

 experimental work on availability for 



plants 489-491 



for plant nutrition, availability of 485-514 



influence of size of particles on availability 



of phosphorus in 507-508 



rock, effect of fermenting dextrose on avail- 

 ability of phosphorus in 502-507 



Tennessee brown rock, availability of phos- 

 phorus in, for plants 492-497 



Piemeisel, F. J., and Stakman, E. C. (paper) 



Infection of Timothy by Puccinia graminis 813-816 

 Pine, western yellow, Hypoderma deformans, 



an undescribed needle fungus of 277-288 



Pinus ponderosa — 



host plant of Hypoderma deformans 277-288 



host plant of Razoumofskya campylopoda . . . 284 



Pisum sativum, impermeable seeds in 762 



Planosarcina ureae, life cycle of 688-694 



Plum curculio, parasite of 847-853 



Plumeria sp., host plant of Aleurothrixus 



floccosus 466 



Pomelo. See Citrus decumana. 

 Pool, V. W., and McKay, M. B. (paper) 

 Climatic conditions as Related to Cercos- 



pora beticola 21-60 



Poplar. See Populus deltoides. 



Populus deltoides, host plant of Fusarium 



radicicola 299 



Potato — 

 experiments with clean seed, on new land 



in southern Idaho 573-575 



Irish. See Solatium tuberosum. 



sweet. See Ipomoea batatas. 



tuber, effect of certain species of Fusarium 



on the composition of 183-196 



Potter, R. S., and Snyder, R. S. (paper) 



Soluble Nonprotein Nitrogen of Soil 61-64 



Powdery-dryrot of Solanum tuberosum, con- 

 trol of 817-832 



Pratt, O. A. (paper)— 

 A Western Fieldrot of the Irish Potato 



Tuber Caused by Fusarium radicicola. . 297-310 

 Control of Powdery-Dryrot of Potatoes 



Caused by Fusarium trichothecioides . . 817-832 

 Experiments with Clean Seed Potatoes on 



New Land in Southern Idaho 573 - 575 



Production of Clear and Sterilized Anti-Hog- 

 Cholera Serum (paper) 333-338 



Progressive Oxidation of Cold-Storage Butter 



(paper) 927-952 



Protozoa in soil, effect of carbon bisulphid on . 3 



Page 

 Prunus spp., food plant of Orn ix geminatella . . 294 

 Pseudomonas — 

 citri — 



causal organism of Citrus canker 74-75 



description of 75-78 



life history of 78-80 



ejjusa, effect of arsenic compounds upon . . 401-402 

 Pseudolsuga laxifolia, oviposition of Megas- 



iigmus permatrophus in the seed of 65-68 



Psidium guajava — 



host plant of Aleurothrixus floccosus 466 



host plant of Trialeurodes floridensis 470 



Puccinia — 

 graminis — 

 avenae, parasite of Phleum pratense. . . . 813-816 



infection of timothy by 813-816 



length of urediniospores of 815 



phleipratensis — 



length of urediniospores of 815 



parasite of Phleum pratense 815 



Pyrus spp., food plant of Ornix geminatella. . . 294 

 Pythium debaryanum — 



causal organism of potato leak 629-636 



cultural studies of 630-632 



growth of, in Solanum tuberosum 635 



inoculation experiments with 632-634 



isolation of 566, 629 



morphology of 629-630 



Quaintance, A. I,., and Baker, A. C. (paper) 

 Aleyrodidae, or White Flies, Attacking the 

 Orange, with Descriptions of Three New 

 Species of Economic Importance 459-473 



Rand, F. V., and Enlows, E. M. A. (paper) 

 Transmission and Control of Bacterial 

 Wilt of Cucurbits 417-434 



Rape as Material for Silage (paper) 527-533 



Rape. See Brassica napus. 



Ration, experimental, with hard palates of 

 cattle 643 



Razoumofskya — 



campylopoda, parasite of yellow pine 284 



laricis, in Oregon 285-286 



Rectangular-beam theory, application of, to 

 design of slabs under concentrated load- 

 ing 233 



Red clover. See Trifolium pratense. 



Reed, J. C, Buckley, J. P., jr., and Holland, 

 E. B. (paper), Determination of Stearic 

 Acid in Butter Fat " 101-113 



Refrigeration, effect of, on pupae of Ceratitis 

 capilata 253-259 



Relation of Carbon Bisulphid to Soil Organ- 

 isms and Plant Growth (paper) 1-20 



Relative Water Requirement of Corn and 

 Sorghums (paper) 473-484 



Reproduction in the domestic fowl, studies of 

 the physiology of 977-1042 



Respiration Calorimeter, A, Partly Auto- 

 matic, for the Study of Metabolic Activity 

 of Small Magnitude (paper) 703-720 



Rhizopus — 

 nigricans — 



causal organism of potato leak 628-629 



isolation of 566 



parasite of Colocasia esculenta 554 



