36 



Phosphates, relative value of different .. .R 8-128, 9-190, 10-14 and 16,13-101, 

 14-13 and 24. 



For barley, R 8-131, 9-192 



For cabbages, R 13-102, 14-27 



For corn, R 10-16 



For oats, R 14-26 



For rye, R 8-13 1, 9-192 



For soy beans, R 9-193 



For turnips (Swedes), R 10-15 



Phosphatic slag, R 9-218 



Analyses of R 13-68, 17-108 



As a source of phosphoric acid, R 13-68 



Notes on R 17-107 



Phosphatic slag and nitrate of soda vs. ground bone for oats and corn, 

 R 8-142. 



Phosphoric acid, determination of available, in soils under cultivation, 

 R 11-127. 



Effect of, on yield of corn, R 15-131 



In cooperative soil tests, R 14-36 



Phosphoric acid manuring, Spe. B. May, '90-22 



Phosphoric acid, potassium oxide and nitrogen in fruits, R 9-246 



Phylloeciis flai'iveiitris, (See Currant stem girdler) 



Phyllosticta acericolor, (See Maple leaf blight) 



Phyllosticta sphoeropsoidea, R 16-10 



Physiological disorders of shade trees, R 1 1-153 



Phytono/iuts nigrirosfris, (See Clover head beetle) 



PhytopJitJiora infestans, (See Potato l)light and Downy mildew of tomato) 



Pieris rapae, (See Cabbage butterfly) 



Pigs, feeding experiments with R 9-126, 10-77. 11-27 



Rations for growing R 11-41 



Wheat vs. rye meal for R 8-7 1 



Pilobolus crystalhniis. (See Rose, black spot of) 



Pitchy carpet beetle {Attagemis picciis), B 5-6 



Plant bed cloth, a substitute for glass, B 1-8 ; R 1-13 



Plant diseases, nature of H 9-57 



Plant lice (Aphides), R 10-103, 16-107, i7-"3 



On rose bushes, B 19-1 19 



Treatment of greenhouse plants for B 96-12 



Plants, ash analyses of B 89-8 



Fungous diseases of B 6-9 



Number of varieties tested, R 8-50 



Over-feeding of R 1 1-154 



Plasmopara cubensis, (See Downy mildew) 



Plowrightia morbosa, (See Plum wart) 



Plum, directions for spraying (See Spraying calendar) 



Literature relating to diseases of R 17-33 



Pruning, B 66-16 



