734 



AGRICULTURAL INDEX 



Potassium — Continued 



Sources of poiussium. C T. Hirst and E. G. 

 Carter. Utah Ag Exp C 22:1-12 '16 



Studies by means of both pot and solution 

 culture of the phosphorus and potassium 

 requirements of the barley plant during its 

 different periods of growth. F. R. Pember. 

 11 R 1 Ag Exp B 169:1-50 '17 



Sec ulso Soils — Potassium content 

 Potassium bitartrate. See Cream of tartar 

 Potassium cyanide 



Conduction of potassium cyanide in plants. 

 J: A. KlJiott. il Phyt 7:443-8 D '17 



Cyanide of potassium. Am Flor 46:706 Ap 

 15 '16 



Poisoning tree parasites with cyanide of po- 

 tassium. M. M. Metcalf. Science (Science 

 Press, Garrison, N.Y. 15c) n s 47:344 Ap 5 

 'IS 



Results of experiments on the use of cyanide 

 of potassium as an insecticide. W. Well- 

 house, il J Boon Entom 9:169-71 P '16 



Similarity in the effects of potassium cyanide 

 and of ether. W. J. V. Osterhout, Bot Gaz 

 63:77-80 Ja '17 

 Potassium in soils. See Soils — Potassium con- 

 tent 

 Potassium permanganate 



Supposed action of potassium permanganate 

 with plant peroxidases. H. H. Bunzell and 

 H. Hasaeibnng. Bot Gaz 63:225-8 Mr '17 

 Potato aphis 



Controlling potato plant lice. Market Growers 

 J 22:241 Mr 15 '18 



Outbreak of the pink and green potato aphis. 

 W. E. Britton and Q. S. Lowry. bibliog il 

 Conn State Ag Exp B 203:290-302 '18 



Pink and green aphid of potato. J. S. Hoviser 

 and others, il Ohio Ag Exp B 317:61-88 '17; 

 Abstract. (/» Ohio vegetable growers' assn. 

 directory, 1918, p. 32-4) n.d. Ohio vegetable 

 growers' assn., Columbus 



Pink and green potato plant louse. J. S. Hou- 

 ser. il Ohio Ag Exp B v 2:261-7 Ag '17 



Plant lice on potatoes. W. R. Brown. Rural 

 N Y 76:1053 S 8 '17 



Potato lice in New Jersey. Rural N Y 76:962 

 Ag 11 '17 



Potato plant lice and their control. W. S. 

 Regan. Mass Ag Exp B 177:135-46 17 



Traitor aphid that robs potatoes. E. M. Patch, 

 il Gard M 27:145 Ap '18 

 Potato association of America 



Its purposes and its woilv. L. D. Sweet. 

 Market Growers J 21:117-18 S 15 '17 



3d annual meeting, Washington, Nov. 13-15, 

 1916. W: Stuart. Market Growers J 19:253- 

 4 D 1 '16 



3d annual meeting, Washington, D.C., Nov. 

 13-15, 1916. C. W. Waid. Ohio F 138:546 

 D 2 '16 



4th annual convention, Washington, D.C., 

 Nov. 9-10. Market Growers J 21:221-3 N 15 

 '17 



4th annual meeting; resolutions. Am Flor 49: 

 1020 N 24 '17 

 Potato black leg 



Black leg disease of potatoes. P. A. Murphy. 

 Sp il '16 Canada Ag 



Black-leg or black stem-rot of potatoes, il 

 J Bd Ag 24:653-6 S '17 



Influence of temperature and precipitation on 

 the blackleg of potato. J. Rosenbaum and 

 G. B. Ramsey. J Ag Research 13:507-13 Je 

 3 '18 



Studies in bacteriosis; blackleg of the potato. 

 S. G. Paine, bibliog J Ag Sci 8:480-94 D '17 



Studies upon the blackleg disease of the po- 

 tato, with special reference to the rela- 

 tionship of the causal organisms. W. J. 

 Morse, bibliog J Ag Research 8:79-126 Ja 15 

 '17 

 Potato bugs. See Colorado potato beetles 



Potato butter 

 Potato butter. Scientific Am Sup (233 Broad- 

 way, N.Y. lOc) 85:191 Mr 23 '18 

 Potato contests 

 Vermont boys champion potato growers. M. R. 

 Tolstrup. Hoard's D 55:644 My 3 '18 



Potato dry rot. See Potato late blight 

 Potato early blight 



Alternaria on datura and potato. R. D. 



Rands, bibliog il Phyt 7:327-38 O '17 

 Early blight of potato and related plants. 

 R. D. Rands, bibliog Wis Ag Exp Research 

 B 42:1-48 '17 

 Potato flour 

 Imperishable potatoes. L. D. Sweet. Review 

 of Reviews (30 Irving Place, N.Y. 25c) 58: 

 77-8 Jl '18 

 More food: best way to take care of it; man- 

 ufacture of potato flour a coming industry. 

 D. H. Anderson. Irr Age 33:145 Jl '18 

 Potato gravy eye. See Potatoes — Diseases and 



pests 

 Potato growers' associations 



Potato growers' associations in Ontario. F. C. 

 Hart. {In Report, Ontario ag. and exp. 

 union, 1916, p. 43-5) '17 Ontario ag. dept., 

 Toronto 

 Steuben county potato growers' association. 

 M. B. Dean. Rural N Y 77:1219 O 26 '18 



See also names of associations, e.g. Michi- 

 gan potato growers' association, New York 

 state potato growers' association. Potato 

 association of America 



Potato late blight 



Conditions influencing the distribution of 

 potato blight in India. Jehangir Fardunji 

 Dastur. Ag J of India Sci Congress No 1917: 

 90-6 



Fighting late blight on potatoes, il O Judd 

 Farmer 62:1 Je 16 '17 



Getting rid of potato blight. O Judd Farmer 

 64:625 Je 15 '18 



Hibernation of phytophthora infestans in the 

 Irish potato. I. E. Melhus. bibliog il J Ag 

 I-iesearch 5:71-102 O 11 '15 



Hibernation of potato blight. Gard Chron 

 (Lond) 64:80 Ag 24 '18 



Late blight and rot of potatoes. P. A. Murphy. 

 13p il '16 Canada Ag 



Late blight of potatoes. D. C. Babcock. il 

 Ohio Ag Exp B V 2:255-6 Ag '17 



Late potato blight in Iowa. A. T. Erwin. la 

 Ag Exp B 163:287-305 '16 



On the reappearance of mildew (phytoph- 

 thora infestans) in the haulm of the po- 

 tato. J. Eriksson. Int R Sci & Prac Ag 

 7,no 11:1709-11 N '16 



Potato crop and blight. B. F. Lutman. Rural 

 N Y 75:707 My 6 '16 



Researches on the germination of the late 

 blight of potato. Int R Sci & Prac Ag 7, no 

 2:305-6 F '16 



Potato leak 

 Disease of potatoes known as leak. L. A. 



Hawkins, bibliog il J Ag Research 6:627-40 



Jl 24 '16 

 Experiments in the control of potato leak. 



L. A. Hawkins. U S Ag B 577:1-5 '17 

 Potato machinery 

 Potato machinery. C. R. White, il N Y Ag 



Dept Rep 1916,pt 2:378-83 '17; Same. N Y 



Farms & Markets Dept Ag B 102:101-6 D 



•17 



From N Y Ag Dept Bulletin 77 

 Potato mattery-eye. See Potatoes — Diseases and 



pests 

 Potato powdery scab 



Contribution to the life history of spongo- 



spoia subterranea. L. O. Kunkel. bibliog 



il J Ag Research 4:265-78 Je '15 

 Influence of moisture and temperature upon 



infection by spongospora subterranea. G. B. 



Ramsey. Phyt 8:29-31 Ja '18 

 Powdery .scab of potatoes. J Ag (Quebec) 



19:205 Mr '16 

 Powdery scab (spongospora subterranea) of 



potatoes. I. E. Melhus. 11 U S Ag B 82:1-16 



'14 

 Spongospora subterranea and phoma tuberosa 



on the Irish potato. I. E. Melhus and others. 



bibliog il map J Ag Research 7:213-54 O 30 



'16 



