Volume 41Table of Contents Volume 41 (1), 1961Cereal rusts in Canada in 1960 G. J. GREEN and D. J. SAMBORSKI Pages 1-21Improving the protective fungicidal activity of nickel sulfate against leaf rust of wheat and crown rust of oats. F.R. FORSYTH and F. JURSIC Pages 22-30 Volume 41 (2), 1961A summary of the prevalence of plant diseases in Canada in 1960 D.W. CREELMANNew and noteworthy diseases Pages 31-33The weather and its influence of plant disease Pages 34-38Phenological data Pages 39-40Diseases of cereal crops Pages 41-48Diseases of forage and other field crops 49-61Diseases of vegetables and field crops Pages 62-86Diseases of fruit crops Pages 87-101Diseases of trees and shrubs Pages 102-109Diseases of herbaceous ornamentals Pages 110-118Host index Pages 119-121 Volume 41 (3), 1961Diseases of apple in British Columbia that are caused by viruses or have characteristics of virus diseases. MAURICE F. WELSH and F.W.L. KEANE Pages 123-147Potato wart investigations in Newfoundland. 0.A. OLSE Pages 148-155Grey speck of oats in Alberta. W.P. CAMPBELL and W.P. SKOROPAD Pages 156-161Germination of rape seed after burial in soil of subgermination moisture content. T.C. VANTERPOOL and E.J. DOSMAN Pages 161-164Soil fumigation for the control of the northern root-knot nematode, Meloidogyne hapla on celery . J. L. TOWNSHEND Pages 164-166Urea-formaldehyde (UFC -85) for the control of potato scab. L. V. BUSCH Pages 167-168A large culture plate for agar diffusion assays, seed treatment evaluation, and mass production of spores. L. T. RICHARDSON Pages 169-170The susceptibility of potato varieties to storage rots caused by Fusarium sambucinum Fckl. F6 Wr. and Fusarium caeruleum(Lib.) Sacc. G. W. AYERS Pages 170-171The susceptibility of potato varieties to wilt caused, by Verticillum albo-atrum Reinke & Berth. G.W.AYERS Pages 172-173Control of plum pocket disease in Nova Scotia. C.O. GOURLEY Page 174The control of late blight and gray mold in tomatoes in Nova Scotia. K.A. HARRISON Pages 175-178Susceptibility of Saia and Fulghum oat varieties to some strains of barley yellow dwarf virus. HARVEY C. SMITH Pages 178-181News Pages 182-183 Volume 41 (4), 1961Investigations of chrysanthemum viruses in Canada I. Chrysanthemum rosette virus W.G. KEMP Pages 183-190Repression de la f létrissure de la gourgane, Fusarium oxysporum Schlecht f. fabae Yu & Fang LOUIS J. COULOMBE Pages 191-193Seed treatments for onion smut control in Manitoba W, C. MCDONALD Pages 194-198Epidemiology of Fusarium storage rot of potatoes in Prince Edward Island G.W. AYERS and G.C. RAMSAY Pages 199-202Introduction of a virus to McIntosh apple from an imported clone of Granny Smith MAURICE F. WELSH and F.W.L. KEANE Pages 203-209An assessment of apple virus indexing results F. W.L. KEANE and MAURICE F. WELSH Pages 210-217Strawberry viruses FRANCES C. MELLOR and RANDAL E. FITZPATRICK Pages 218-255A review of the taxonomy and nomenclature of some low-temperature forage pathogens W.C. MCDONALD Pages 256-260Variation in isolates of Didymella applanata A.T. BOLTON and J.B. JULIEN Pages 261-264Curly-top, a virus disease of florists’ geranium In Ontario W.G. KEMP Pages 265-268Les pétales verts du fraisier et la phyllodie du trèfle ladino RENE O. LACHANCE and J. DUNCAN Pages 269-273A new host record of a rust in Canada H. N. W. TOMS Page 274 Volume 41 (5), 1961Resistance to pre-emergence damping-off in garden peas W.C. McDONALD and H.H. MARSHALL Pages 275-279Gloeosporium album and G. malicorticis on apples in – Nova Scotia C. L. LOCKHART and R.G. ROSS Pages 280-285Internal sprouting of potatoes L.V. BUSCH Pages 286-287Discovery of the sugar-beet nematode in western Canada C.E. LILLY, A.M. HARPER and E. J. HAWN Page 288An occurrence of Heterodera trifolii Goffart, 1932 in the Niagara Peninsula, Ontario J. L. TOWNSHEND and R.H. MULVEY Page 290Experiments on the chemical control of snow-mold in turf S.G.FUSHTEY Pages 291-296The crown-gall organism in Nova Scotia C.O. GOURLEY and K.A. HARRISON Pages 297-298The occurrence of Pyrenophora teres on barley straw in Alberta L.J. PIENING Pages 299-300Co-operative seed-treatment trials – 1961 J.E. MACHACEK and H.A.H. WALLACE Pages 301-305Effects of high surface-soil temperatures on cereals and flax T.C. VANTERPOOL Pages 306-309Forecasting late blight of potato in the Montreal area in 1961 THOMAS SIMARD Pages 310-313Spraying potatoes according to two methods of forecasting late blight THOMAS SIMARD and JACQUES SIMARD Pages 314-316Fairy rings in Alberta J. B. LEBEAU and E. J. HAWN Pages 317-320La tache argentée dans la province du Quebéc JACQUELIN SANTERRE Pages 321-324The hypersensitive reaction of certain potato varieties to infection with virus X JAMES MUNRO Pages 325-328La rouille du pommier J.B. JULIEN Page 329The causes and distribution of mosaic diseases of wheat in Canada in 1961 J.T. SLYKHUIS Pages 330-343Barley yellow dwarf survey in Canada – 1961 HARVEY C. SMITH Pages 344-352Vegetable diseases on muck soils in the Montreal area in 1961 JACQUES SIMARD, RENE CRETE and THOMAS SIMARD Pages 353-356Some records of plant-parasitic nematodes encountered in Canada in 1961 R.H. MULVEY Pages 357-360Epidemiology of potato late blight in the province of Quebec in 1961 HENRI GENEREUX Pages 361-362Diseases of field beans in western Ontario in 1961 G.H. CLARK and R.N. WENSLEY Page 363A survey for bacterial blight in registered field bean crops in southwestern Ontario M.D. SUTTON, W.L. SEAMAN and V.R. WALLEN Page 3641961 pea disease survey in the Ottawa valley V.R. WALLEN Page 365Storage diseases of tomatoes in Nova Scotia in 1961 C.L. LOCKHART Page 3661961 seed-treatment survey in the prairie provinces F. J, GREANEY Pages 367-368Cereal diseases encountered at illustration stations in north and central Alberta in 1961 W.P. CAMPBELL, L.J. BIENlNG and D. W. CREELMAN Pages 369-370Alfalfa diseases in central British Columbia in 1961 E. J. HAWN Page 371Rape diseases in Saskatchewan in 1961 T.C. VANTERPOOL Pages 372-373Tobacco diseases in Ontario in 1961 Z.A. PATRICK and L. W. KOCH Pages 374-375Plant-parasitic nematodes in southwestern Ontario in 1961 W.B. MOUNTAIN and R. M. SAYRE Pages 376-377