Volume 52

Table of Contents
Volume 52 (1), 1972

B. BERKENKAMP, L. FOLKINS, and JOAN MEERES Crown and root rot of birdsfoot trefoil in Alberta Pages 1-3
L.S. THOMPSON and J.A. CUTCLIFFE Incidence of green petal disease in some strawberry cultivars and selections in Prince Edward Island, 1970-71 Pages 4-5
G.J. GREEN Air-borne rust inoculum over Western Canada in 1971 Pages 6-7
D.J. SAMBORSKI Leaf rust of wheat in Canada in 1971 Pages 8-10
G.J. GREEN Stem rust of wheat, barley, and rye in Canada in 1971 Pages 11-14
GEORGE FLEISCHMANN Crown rust of oats in Canada in 1971 Pages 15-16
J.W. MARTENS and P.K. ANEMA Stem rust of oats in Canada in 1971 Pages 17-18
H.W. JOHNSTON and L.S. THOMPSON Cereal diseases in the Maritime Provinces, 1971 Page 19
H. A. H. WALLACE Cooperative seed treatment trials – 1971 Pages 20-24
J. DREW SMITH Snow mold of turfgrass in Saskatchewan in 1971 Pages 25-29
L.C. CALLBECK Screening of potato fungicides in 1971 Pages 30-31
ROBERT SEWELL Plant-parasitic nematodes from Canada and abroad, 1970 Page 32

Volume 52 (2), 1972
L.F. GATES and C.D. MCKEEN Reaction of susceptible and resistant tomato genotypes to tobacco mosaic virus in southwestern Ontario Pages 33-38
J. DREW SMITH and C.R. ELLIOTT Didymella stem eyespot of Festuca spp. in northern Alberta and British Columbia in 1970 and 1971 Pages 39-41
V.R. WALLEN and A.B. EDNIE Prevalence, distribution, and importance of dwarf bunt of winter wheat in Ontario, 1970-71 Pages 42-44
MORGAN S. CHIANG and RENE CRETE Screening crucifers for germplasm resistance to clubroot, Plasmodiophora brassicae Pages 45-50
B. BERKENKAMP Losses from foliage diseases of forage crops in central and northern Alberta in 1971 Pages 51-55
J. NIELSEN Occurrence in western Canada of collections of loose smut, Ustilago avenae, virulent on oat varieties with resistance from Victoria Pages 56-57
W.G. KEMP, J. WIEBE, and Z.A. PATRICK Squash mosaic virus in muskmelon seed distributed commercially in Ontario Pages 58-59
R.E. XIANNEMAN, Jr. and R.P. SINGH Seed production in the virus indicator plant Scopolia sinensis Pages 60-61
B. BERKENKAMP Diseases of rapeseed in central and northern Alberta in 1971 Pages 62-63
L.F. GATES and BART BOLWYN Southern leaf blight of corn in southwestern Ontario in 1971 Pages 64-69
A.T. BOLTON and W.L. SEAMAN Southern leaf blight of corn in eastern Ontario in 1971 Pages 70-71
W.E. SACKSTON and J.W. SHEPPARD Survey for southern leaf blight of corn in Quebec in 1971 Pages 72-74
G.R. WEBSTER, W.R. ORCHARD, and E.J. HAWN Paratylenchus projectus in alfalfa fields in central and northern Alberta Pages 75-76

Volume 52 (3), 1972
G.W. AYERS Races of Plasmodiophora brassicae infecting crucifer crops in Canada Pages 77-81
H. WINSTON JOHNSTON Control of powdery mildew of wheat by systemic seed treatments Pages 82-84
C.O. GOURLEY Apioporthe vepris on red raspberry in Nova Scotia Pages 85-88
J.C. SUTTON, A. BOOTSMA, and T.J. GILLESPIE Influence of some cultural practices on yellow leaf blight of maize Pages 89-92
C.G. MORTIMORE and L.F. GATES Effects of reducing interplant competition for light and water on stalk rot of corn Pages 93-96
C.O. GOURLEY and R.W. DELBRIDGE Sclerotinia sclerotiorum on horsechestnut trees Pages 97-98
L.W. CARLSON Fungicidal control of poplar leaf spots in Alberta and Saskatchewan Pages 99-101
C.F. MARKS, J.L. TOWNSHEND, J.W. POTTER, Th.H.A. OLTHOF, P.W. (JOHNSON, and J. LOUNSBERY Plant-parasitic nematode genera associated with crops in Ontario in 1971 Pages 102-103
C. L . LOCKHART Control of nematodes in peat with formaldehyde Page 104
K.G. PROUDFOOT and RAY F. MORRIS Chemical control of the golden nematode, Heterodera rostochiensis: Greenhouse observations on the use of DPX 1410 as a potato seed piece treatment Pages 105-106
P.W. JOHNSON and W.E. KAYLER Stem and bulb nematode found in Erieau Marsh, Kent County, Ontario Page 107
C.C. BERNIER Diseases of rapeseed in Manitoba in 1971 Page 108
R.G. PLATFORD, C.C. BERNIER, and A.C. FERGUSON Lawn and turf diseases in the vicinity of Winnipeg, Manitoba Pages 108-109
R.S. DICKHOUT and D.J. ORMROD *First record of Septoria digitalis* in Canada** Page 109
W.I. ILLMAN Glomerella cingulata from Alabama-grown tomatoes offered for Sale at Ottawa Page 110
CORRECTIONS
	J.Drew Smith and C.R. Elliott. Didymella stem eyespot of Festuca spp. in northern Alberta and British Columbia in 1970 and 1971. Vol. 52:39-41. Page 111
	L.F. Gates and Bart Bolwyn Southern leaf blight of corn in southwestern Ontario in 1971. Vol. 52:64-69. Page 111

Volume 52 (4), 1972
W.A.F. HAGBORG, A.W. CHIKO, G. FLEISCHMANN, C.C. GILL, G.J. GREEN, J.W. MARTENS, J.J. NIELSEN, and D.J. SAMBORSKI Losses from cereal diseases in Manitoba in 1971 Pages 113-118
C.L. LOCKHART and R.W. DELBRIDGE Occurrence and pathogenicity of Godronia cassandrae f. vaccinii on lowbush blueberry in Nova Scotia Pages 119-121
J.W. MARTENS, G. FLEISCHMANN, and R.I.H. MCKENZIE Effects of natural infections of crown rust and stem rust on yield and quality of oats in Manitoba Pages 122-125
J.T. MILLS Cooperative seed treatment trials – 1972 Pages 126-129
J.T. MILLS Interactions among biotic variables affecting Cochliobolus sativus as a pathogen of cereals Pages 130-136
R.B. SMITH, J.A. BARANYAY, and E.V. MORRIS Three new host records for dwarf mistletoes in British Columbia Pages 137-138
J.M. POWELL Additional collections of Tuberculina maxima on pine stem rusts in western Canada Page 139
C.L. LOCKHART and R.W. DELBRIDGE Control of storage diseases of carrots by washing, grading, and postharvest fungicide treatments Pages 140-142
R.A.A. MORRALL, D.L. MCKENZIE, L.J. DUCZEK, and P.R. VERMA A qualitative survey of diseases of some specialty crops in Saskatchewan in 1970 and 1971: sunflower, safflower, buckwheat, lentil, mustards, and field pea Pages 143-148
HOWARD HARDING Foliage diseases of alfalfa in northern Saskatchewan: a note on the 1972 survey and the differential reactions of nine varieties Pages 149-150
L.C. CALLBECK Screening of potato fungicides in 1972 Pages 151-152
K..A. PIROZYNSKI and J. DREW SMITH *A septoria disease of Koeleria macrantha* in Alberta and Saskatchewan** Pages 153-155
MICHIO SUZUKI Winterkill patterns of forage crops and winter wheat in P.E.I. in 1972 Pages 156-159
G.J. GREEN Air-borne rust inoculum over western Canada in 1972 Pages 160-161
G.J. GREEN Stem rust of wheat, barley, and rye in Canada in 1972 Pages 162-167
D.J. SAMBORSKI Leaf rust of wheat in Canada in 1972 Pages 168-170
J.W. MARTENS Stem rust of oats in Canada in 1972 Pages 171-172
D.J. SAMBORSKI and R.I.H. MCKENZIE Crown rust of oats in Canada in 1972 Pages 173-174
AUTHOR INDEX TO VOLUME 52 Pages 175-177