106 THE CROWN-GALL AND HAIRY-ROOT OF THE APPLE TRER. 
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Orchards, importance of choosing high-grade trees....................-..---- 165 
recommendations as/toi methods) teie sce. 454 44 a ee 69-70, 74 
scion, selectionjol stocks 5.22228: ue eee ee ee ey ee 52, 53, 67-68 
Packing for rootigrakis, exqueriuments axe 55 5 5 ee ee 47, 48, 67, 73 
Paddock, Wendell, on nursery anspection = -5.- 5 ee ne oe eee 44 
Paper, waxed, use in wrapping root grafts, method........................-..- 61 
Peach crown-gall. See Crown-gall, peach. 
Pear, occurrence of wurzelkropi in Germany. _-.....:_..7...2. 7... "Si eel 11 
Pirus mals simensis, satkected soy «crowvaas alls eee er eee eee 11 
Planting, root grafts at various oe LIMES; tes Ss SOREN eee ae! 21,67, 71, 73:30 
Plates, descriptions i. gee eases ee ne Se eet ae 99-100 
Popenoe, E. A., experiment with sale trees affected with galls.............. oo 
statement as to attempts of Kansas growers to prevent disease. 58 
Propagation by budding recommended for certain varieties of apple........... 73-74 
method, relation to.diséasés.- 25. stesso ee ee 1 
methods recommended for different sections.........-.........2: 19 
use of diseased cuttings of apple........ Moke igs SCs ys Pe ne 15 
Pruning, knife, factor in spread of crown-gall and hairy-root, experiment...... 55 
Publications on the communicability of crown-gall and hairy-root............ 44-46 
Raha, Use: in Wrappil CmrOOtiaEAhtS=— sees 5 oe assets eer eee i ee 64 
Rambo apple. See Apple, Rambo. 
Recommendations) of bulletimis 222%: 22a oes eee eee 73-74 
Red June apple. See Apple, Red June. 
Ribes, occurrence of crown-gall in Holland=:.22 2.2 22295958 eee 11 
Rolfs, F.M., Stewart, F.C., and Hall, F. H., statement regarding trees affected 
with: disease: icc. 24s 508 Sane Essen eee ee ee ee 30, 32 
Rome Beauty apple. See Apple, Rome Beauty. 
Root galls. See Hairy-root, variant names. 
erafted trees. See Trees, root-graited. 
crafting. See Grafting, root. 
orafts. See Graits, root. 
knots. See Hairy-root, variant names. 
rot, confusion with crown-calles.22 es he ee ee es 33, 37 
Roots, development in trees irom diseased stock.----- 2-222 222s ee 35 
relation,of growth to hairy-root.222: 2 -222--) s-ce ee) ee ee 48-49 
to.injury drom“hainy-rootss.2 <4 5-222 seen See nee 40 
seedling selection for grafting factor in control of hairy-root..........-- 60 
selection of upper and lower for root grafts, results..............-.-.-.-- 80 
Rubber, use in wrappine root, eralts: 5225-625 6-22 se ae ee eee 61 
Salome apple. See Apple, Salome. 
Sand, use for packing Toot oralts i225 2225.55. See ee eee 67,73 
eandcten: E. P., observations on crown- -gall Scchg ale ee Geta a ne eee 31-32 
Schrenk, Be ena von, investigations: 2 sc). s1 2s ee ae eS Se ee eee 10 
Scion orchards. See Orchards, scion. 
Scions from different localities, susceptibility to crown-gall and hairy-root..... 43, 86 
diseased trees, relation to crown-gall and hairy-root....- 35, 52-538, 87-88 
young and old ‘trees, results of mSe222-= 2c 3) Se eee ae 25, 26, 82 
point of oriem of hamy-toot 2: 222520" ae. ee eee 43 
selection, factor in control of crown-gall and hairy-root.. 42, 52, 53, 59-60, 71, 73 
washing in copper-sulphate solution, experiments............-------- 92 
Scott winter apple. See Apple, Scott winter. 
Seedlings, apple. See Apple, seedlings. 
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