INDEX. 15 



Bulletin 

 Pine— No. Page. 



lodgepole, destruction by sheep grazing 738 7-25 



western yellow — ■ 



area and timber stand, National Forests, Northwest 738 1-2 



reproduction in Central Idaho, effect of grazing, bulletin 



by W. N. Sparhawk 738 1-31 



seedling, destructidn by sheep grazing 738 7-25 



Pinus ponderosa. See Pine, western yellow. 



Pitting, sugar beet, cost 726 40-41 



Planting — 



beet, dates, methods, and seed quantity per acre 748 ' 3, 20-21, 



35-36 



deep, injurious effects on apple trees 730 38-39 



sugar-beet, methods, distance, and cost 735 18 



Plants, desert, as emergency feed for live stock, bulletin by E. 0. 



Wooton 728 1-31 



Plowing — ■ 



beets, farm practices, Michigan and Ohio 748 12-13, 32 



sugar beet — 



disking and rolling, costs 726 17-25 



practices, cost per acre, etc 735 11-1 3 



Poison — 



use against — 



boll weevil, nature, application and effectiveness 731 2-15 



sugar-cane moth borer 746 43-47 



Poisoning — 



cotton-boll weevils, experiments, bulletin by B. R. Coad 731 1-15 



weevil, material, machinery, time and cost for cotton 731 11-15 



Pollination, fig, methods, and studies 732 10-15 



Popenoe, Wilson, bulletin on "The Avocado in Guatemala " 743 1-69 



Populus — ■ 



aurea. See Aspen. 

 tremuloides . See Aspen. 



Potassium sulphid, use in treatment of infested sugar cane 746 50-52 



Potatoes, storage, handling, temperature, storage period, etc 729 4 



Poultry — 



dressed, storage, preparation, packing, temperature, storage 



period, etc 729 8-9 



feeding on avocados 743 5 



Power, selection for creameries 747 28-31 



President Wilson — 



message to farmers 728 28-31 



remarks on work of Agriculture Department 732 48 



Prices, cotton, average received by growers, Dec. 1, 1916, and 1917, 



by States 733 8 



Pruning, fig trees, directions 732 32 



Pryor, W. L., bulletin on "Length of cotton lint, crops 1916 and 



1917" 733 1-8 



P Minus ruficornis, habits 737 7 



Ptinidae — 



family, classification and synonymy 737 4-5 



spp., tobacco beetles, food habits, injuries, and names 737 7 



Ptinus — 

 fur — 



occurrence and food habits, note 737 7 



origin and food habits 737 7 



serricornis. See Tobacco beetle. 

 Publications — 

 list, on — 



fig production 732 41-43 



sugar beets 726 60 



See also subjects of publications. 

 Pumps, belt-driven, steam requirements 747 26-27 



Quio te, occurrence and availability as emergency stock feed 728 10 



Rainfall, Michigan and Ohio, beet-growing sections 748 6-7 



