Annual District Reports: Forest Insect and Disease Survey ... - NFIS

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4. ANNUAL DISTRICT REPORT SOUTHERN DISTRICT OF SASKATCHEWAN 1963 by V. Hildahl CANADA DEPARTMENT OF FORESTRY FOREST ENTOMOLOGY LABORATORY WINNIPEG, MANITOBA March, 1964
-41- 4.1 INTRODUCTION Almost ideal weather throughout most of the spring, summer and fall produced one of the best-growing and longest frost-free seasons on record in southern Saskatchewan. Foliage development on most tree species was delayed about a week by cool, wet weather during early May, but normal temperatures and above-average precipitation in June and July accelerated growth. The season ended with above-normal temperatures and generally light rainfall in all sections. Owing to staff shortages during the current season, Forest Insect and Disease Survey investigations were greatly reduced in the District. Work consisted primarily of sampling and recording major pests, and of carrying out special studies considered essential to the overall Survey program. The latter included: (1) egg-mass and defoliation surveys of the spruce budworm; (2) egg-band sampling of the forest tent caterpillar; and (3) larval population sampling of the fall cankerworm and boxelder twig borer. Totals of 119 insect and 11 disease samples were submitted to the Forest Entomology Laboratory, Winnipeg and the Forest Pathology Laboratory, Saskatoon, respectively. Although the number of major insect problems remained much the same, there were important changes in the status of some of them. The occurrence of large numbers of adults of the aspen leaf beetle in late May and early June caused considerable concern to Park Officials and private individuals, but resultant larval populations failed to develop fully and skeletonizing of aspen foliage was patchy and much less severe than expected. The continued decline of forest tent caterpillar infestations in the Cypress Hills Provincial Forest was partly off-set by a substantial increase in populations of the American poplar beetle resulting in almost complete defoliation of trembling aspen in localized areas of the Park Block. Boundaries of the localized outbreak of the spruce budworm in the Battle Creek Valley of the Cypress Hills remained unchanged, but larval populations were notably lower and caused only light to moderate defoliation of white spruce. Spider mites occurred commonly on planted white spruce throughout the District, but due to the cool, wet weather during the early part of the season, damage was less conspicuous. Several new local infestations of the fall cankerworm were recorded on shelterbelt and town plantings of Manitoba maple and white elm in the west-central part' of the District, and the yellow-headed spruce sawfly was noticeably more abundant on ornamental white spruce throughout the eastern sections. The most important tree disease condition was continuing mortality resulting from the extreme drought in 1961. Observations in August and September of this year indicated that mortality of trembling aspen had increased as much as 25 per cent in some prairie "bluffs" where previous damage had been particularly severe. Associated again with the drought-weakened and dying trees were new and widespread attacks of Cytospera canker. Spraying with 2 1 4-D for weed control in field crops caused considerable damage to the shoots and foliage of Manitoba maple and some other tree species in adjacent shelterbelts.
Page 1 and 2: LIBRARY PEST RESEARCH LABORATC4RY N
Page 3 and 4: TABLE OF CONTENTS Subject 1. Summar
Page 5 and 6: 1. SUMMARY OF FOREST INSECT AND DIS
Page 7 and 8: 3 generally confined to the Aspen G
Page 9 and 10: 1.2 SUMMARY OF FIELD OPERATIONS Sur
Page 11 and 12: the larval drop-tray method) was re
Page 13 and 14: 2. ANNUAL DISTRICT REPORT SOUTHERN
Page 15 and 16: 2.2 INSECT CONDITIONS 2.2.1 Larch S
Page 17 and 18: - 13 - southwest of Jackfish Point
Page 19 and 20: skeletonizing of the foliage of tre
Page 21 and 22: —17— 2.2.14 Other Noteworthy In
Page 23 and 24: - 19 - 2.2.14 Other Noteworthy Inse
Page 25 and 26: - 21 - TABLE 3 Degree of Injury to
Page 27 and 28: 3. ANNUAL DISTRICT REPORT EASTERN D
Page 29 and 30: 3.2 INSECT CONDITIONS 3.2.1 Larch S
Page 31 and 32: -27- 3.2.6 White-pine Weevil, Pisso
Page 33 and 34: -29- TABLE 1 Forest Tent Caterpilla
Page 35 and 36: - 31 - 3.2.11 American Aspen Beetle
Page 37 and 38: - 33- 3.2.19 Other Noteworthy Insec
Page 39 and 40: -35- 3.2.19 Other Noteworthy Insect
Page 41 and 42: -37- 3.3 TREE DISEASE CONDITIONS 3.
Page 43: - 39 - 3.3.10 Flooding by Beaver:-
Page 47 and 48: 4.2.4 Yellow-headed Spruce Sawfly,
Page 49 and 50: -45- 4.2.10 Gray Willow Leaf Beetle
Page 53 and 54: - 49 - August and early September i
Page 55 and 56: -51- TABLE 4 (cont.) Location ate S
Page 57 and 58: -53- 5.1 INTRODUCTION Field surveys
Page 59 and 60: - 55 - 5.2.5 Spruce Needleworm, Dio
Page 61 and 62: -57- TABLE I (cont.) Av. d.b.h. Av.
Page 63 and 64: -59- 5.2.14 Bark Beetles and Wood B
Page 65 and 66: —61— 5.2.15 Other Noteworthy In
Page 69 and 70: -65- 5.3.6 Spruce Mistletoe, Arceut
Page 71 and 72: - 67 5.3.12 Other Noteworthy Diseas
Page 73 and 74: - 69 - 6.1 INTRODUCTION Surveys of
Page 75 and 76: -71- lakes, and along the Wolverine
Page 77 and 78: I TABLE -73- Area Type of collectio
Page 81 and 82: -77- 6.3 TREE DISEA SE CONDITIONS 6
Page 83 and 84: - 79 - Other forest insects and dis
Page 85 and 86: 7. ANNUAL DISTRICT REPORT HUDSON BA
Page 87 and 88: - 83 - 7.2 INSECT CONDITIONS 702.1
Page 89 and 90: - 85 - The boundaries of the infest
Page 91 and 92: - 87 - TABLE 1 (cont.) Av. Location
Page 93 and 94: -89- 7.2.10 Other Noteworthy Insect
Page 95 and 96:
7,2.10 Other Noteworthy Insects (co
Page 97 and 98:
- 93 -. 7.2.10 Other Noteworthy Ins
Page 99 and 100:
- 95 - TABLE 2 (cont.) Place ate De
Page 101 and 102:
8 . ANNUAL DISTRICT REPORT PRINCE A
Page 103 and 104:
-99- Defoliation ranging from light
Page 105 and 106:
- 101 - 8.2.8 Sawflies on Jack Pine
Page 107 and 108:
- 103 - 8.2.11 Grey Willow-leaf Bee
Page 109 and 110:
- 105- 8.2.16 Other Noteworthy Inse
Page 111 and 112:
- 107 - 8.3.3 A Canker on Trembling
Page 113 and 114:
-109- 8.3.6 Spruce Needle Rust, Chr
Page 115 and 116:
9. ANNUAL DISTRICT REPORT NORTHERN
Page 117 and 118:
- 113 - Lake Athabaska south to the
Page 119 and 120:
TABLE 1 Results of Forest Tent Cate
Page 121 and 122:
- 117 - 9.2.13 Other Noteworthy Ins
Page 123 and 124:
-119- 9.2.13 Other Noteworthy Insec
Page 125 and 126:
10. ANNUAL DISTRICT REPORT MEADOW l
Page 127 and 128:
-12 3 - Cocoons wore collected for
Page 129 and 130:
Location Location Type of Collectio
Page 131 and 132:
-127- TABlE 2 Results of Boxelder T
Page 133 and 134:
-129- 10.2.12 Other Noteworthy Inse
Page 135 and 136:
- 131 - 10.3.6 Other Noteworthy Dis
Page 137 and 138:
- 133 - 11.1 INTRODUCTION Forest in
Page 139 and 140:
- 13 5 - in the Hoey-Wakaw-Crystal
Page 141 and 142:
- 137 - 11.3 TREE DISEASE CONDITION
Page 143 and 144:
BIOLOGY RANGER DISTRICTS MANITOBA I
Page 145 and 146:
BIOLOGY RANGER DISTRICTS MANITOBA I
Page 147 and 148:
BIOLOGY RANGER DISTRICTS MANITOBA 1
Page 149 and 150:
BIOLOGY RANGIER DISTRICTS MANITOBA
Page 151 and 152:
147 INDEX TO INSECT SPECIES Achaeto
Page 153 and 154:
Magdalis albicollis Malacosoma amer
Page 155:
-151- Flammula alnicola 39, 131 pin
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