980 



EXPERIMENT STATION RECORD. 



f Vol. 40 



Pollination — Page. 



controlled, in Nicotiana 131 



improved technique 027 



rOle of insects in 655 



Polychro8\8 botrana, remedies 1(57 



Poli/nrma imitatrix n.sp., descrip- 

 tion 760 



Polyneuritis, studies 563.564 



(See also Antipolyneurltic sub- 

 stances.) 



Polyponis xulijhureus on alder 84-1 



Pomologieal instruction 19G 



Poitillia faponiea larva?, fumigation. 250 

 Poplar — 



Don r, studies 861 



leaf-miner In New Jersey 758 



Poria hi/polatcrita, notes 5-'i 



Pork, home butchering and curi 



X.J 77_ 



Porthetrta dispar. Oi] 



moth.) 



Porto Rico Station, report 97 



Portulaca, inheritance studies. 131 



Potash — 



deposits of Alsace 



determination 112. 309, 800 



determination, preparation of 



perchloric acid for 13 



fertilizers, unbalanced, . 021 

 from blast furnaces and cement 



works ISS 



from bracken fern 321 



from desert lakes and alunitcs. 128 



from feldspar 134 



from greensand 209. 428 



from hemp pulp I 



from kelp 128 



from olive-oil residue 



from Pimm* tiutgnit 321 



from Bearles Lake 128 



from sunflower Btems 242 



from water hyacinth 347 



from wood ashes 820 



growing wheat without 134 



mines and works • 1 128 



of feeding stuffs, digestibility, 



Tex 769 



production in California 725 



production in Nebraska 320 



production in 1917 723 



production in United States 



51C, 517 

 residues in Bag) rstown soil, 



condition 26 



scarcity, relation to cotton 



yields 880 



eoil, utilizing 



solubility In moscovite 812 



use on cotton, corn and pota- 

 toes, Tex 516 



v. phosphate fertilizers 824 



Potassium — 



chlorld, effect on wheat 244 



chlorld, fertilizing value, Tex__ 510 



chlorld, preparation 801 



content of spinach 451 



cyanld, toxic action on Parame- 

 cium and Didinlum 455 



Potassium — Continued. Page. 



deficiency, effect on oat plant 324 



determination in blood 116 



effect on hydration and growth. 818 



ferrocyanid, toxicity in soils 720 



nitrate, preparation 801 



platinic chlorid, rapid reduction 711 

 salts, influence on nitric-nitro- 



gen accumulation 722 



sulphate, fertilizing value 515. 720 



sulphate, fertilising value, Tex. 518 



--ulphate, preparation B0J 



Potato — 



A ^ociation of America, proceed- 

 ings 



• tie, behavior in deserts 



beetle, Colorado, remedies, Eans. 330 



beetle, remedies, Minn 7.".4 



black canker or w;irt 848 



black scurf, treatment 



black scurf, treatment, Minn 7.".4 



blackleg, r. it 449 



disease* new, in Hawaii 



diseases, conference on 



diseases in New Jersey. N.J 717 



dl- otes 50 844 v !7 



diseases, notes. Can 154 



d I - OS .".14 



dll . Mont 449 



d; . W.ish 74«'. 



early blicht, remedies, Kans 330 



rly blight, studies 



farms in New Jersey 



I 1 ontrol In 



Pusarium blight under irriga- 

 tion B47 



lal • 1 -17 



late blight, notes, Can 154 



leaf burn, relation to leaf- 

 hopper 353 



leaf roll, effect on prodad 2.">l 



f roll, studies ."47. 513 



mosaic disease, notes s 17 



plant, ( .imposition at various 



st aces 240 



plant Ions , pink and green 450 



products, feeding valve, i.s.d.a. 



Rhlzoi'tonia. tr ea tm ent 841 



rust spot, internal sis 







scab organism as affected by 



m i.lity 0.14 



scab, treatment v <7 



lb, treatment, Minn ' 



stalk «li- todies 49 



starch, color reaction 411 



tuber moth In California SB 



wart, black, notes 



wart iu Pennsylvania, Pa 



wart In Pennsylvania, I'.s IVA. I 



543 



wart, resistant strains 690 



wilt, studies 51 



Potatoes — 



culture, Looks on 



culture experiments 484, 626, I 



culture experiments. Can ' 



culture experiments, Minn 1 



