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

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generally distributed throughout the entire Aspen Grove Section and in "prairie bluffs" of trembling aspen in the eastern and central parts of the District. However, correspondingly high larval populations failed to develop and resultant skeletonizing of the foliage was less severe than expected. Damage was most severe on aspen reproduction, but where localized infestations were particularly heavy, the foliage in the entire crown of trees up to 4" D.B.H. was completely skeletonized. The unusually high populations of adults caused light to moderate defoliation early in the season in the Esterhazy, Abernethy, Bulyea, Moosomin, Broadview, Odessa, McLean, Kipling,Froude, Weyburn and Moose Mountain Provincial Park areas. Larval feeding commenced in the latter part of June and by mid-August, patchy to almost continuous skeletonizing of the foliage extended over the entire area from Maryfield and the Moose Mountain Provincial Park, northwest through McLean and Bulyea and eastward to Ituna and Yorkton. In addition, localized moderate to severe infestations developed some distance to the west of the main area in the Trans-Canada Campsite near Besant, and at Elbow, Davidson and Chamberlain. 4.2.9 Forest Tent Caterpillar, Malacosoma disstria Hbn.:- Populations continued to decline in the trembling aspen stands in the Cypress Hills and none were found elsewhere in the District for the first time in several years. In the Cypress Hills Provincial Forest, the old infestation in the Park Block completely subsided and only two small patches of light to moderate defoliation remained in the East Block. One patch, located in sec. 9, tp. 9, rge. 24, W 3rd mer., covered approximately 150 acres and the other in sec. 3, tp. 9, rge. 25, W 3rd mer. was limited to about 30 acres. As shown in Table 2, results of egg surveys carried out in the fall indicate that present low populations will continue to decline and cause no noticeable defoliation of trembling aspen in 1964. TABLE 2 Results of Forest Tent Caterpillar Egg Sampling Southern District of Saskatchewan - 1963 (based on the examination of 3 co-dominant trembling, aspen trees at each sample point) --SampIe Location by Av. d.b.h. Av. Av. Crown Av. No. of Defoliation Point Sec.,Tp. of trees Ht. Depth Egg-bands forecast No. Rge., and Mer. (ins.) (ft2) SallE2111111222§1 - Park Block 1 36-8-26-W3 3.6 24.0 11.4 0 Nil 2 25-8-27-W3 2.8 20.0 10.6 0 Nil 3 21-8-26-W3 3.0 25.6 12.4 0 Nil East Block 4 23-9-25-W3 3.0 21.0 15.0 0 Nil 5 25-9-25-W3 2.0 18.4 9.6 0 Nil West Block 6 36-7-29-W3 4.0 30.0 18.0 0 Nil 7 21-8-30-W3 3.0 27.4 18.4 0 Nil
-45- 4.2.10 Gray Willow Leaf Beetle, Galerucella decora (Say):- Infestations were widespread in the eastern and central sections of the District, and by mid-August severe skeletonizing of the foliage by both larvae and adults of this beetle was common in willow bluffs growing about sloughs in cultivated fields, on pasture lands, and along roadsides. The most extensive and continuous outbreak occurred within a triangular area extending from. Caron west to Chaplin and South to Old Wives Lake, where exceptionally high populations completely skeletonized the foliage on all willows. Localized moderate to severe infestations also were recorded on white elm and green ash plantings in Rowan's Ravine Provincial Park along the east side of Last Mountain Lake, and on willow and ornamental hybrid poplars and Manitoba maples in the Trans-Canada Campsite near Besant. 4.2.11 American Aspen Beetle, gonioctena americana (Schaeff.):- This leaf-eating beetle, which is usually most abundant during late May and June, increased significantly in trembling aspen stands throughout the Cypress Hills Provincial Forest, but it was not recorded elsewhere in the District. The most severe infestations were noted in the Park Block where unusually large numbers of both larvae and adults completely defoliated all aspen up to 5 inches d.b.h. in several small localized patches. Beetles were also numerous throughout aspen stands in the remainder of the Park Block and in the East and West blocks, but feeding was confined to aspen reproduction and defoliation was only light to moderate. 4.2.12 Boxelder Twig Borer, Proteoteras willingana (Kear.):- Larvae of this species bore into the current twigs of Manitoba maple resulting in notable pruning of the ends of the branches the following spring. Counts at permanent sampling points, which are shown in Table 3 showed a further general increase in the incidence of twig borers in shelterbelts in 1963. TABLE 3 Boxelder Twig Borer Population Counts Southern District of Saskatchewan - 1963 (based on the examination of four branches 36 inches long from each crown level of five trees at each sample point.) No. of Twigs Examined and Twig Borer Tree Data Populations Crown Level Av. Av. UPPER Location Av. Crown Crown No. No. No. No. Ht. Depth Width of of of of (ft ft. ft. Twigs Borer Bore Maple Creek 15.0 10.0 6.0 241 20 246 16 232 13 Swift Current 21.0 12.0 7.0 255 28 270 37 304 39 Findlater 23.0 14.0 8.0 286 22 317 20 294 11 Indian Head 24.0 16.0 8.0 372 27 378 27 344 21 Carlyle 25.0 17.0 9.0 432 22 408 26 342 19 Willowbrook 26.0 18.0 12.0 436 22 426 34 . 373 18 Moose Jaw 16.0 12.0 8.0 32 20 2 1 285 15
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 and 44: - 39 - 3.3.10 Flooding by Beaver:-
Page 45 and 46: -41- 4.1 INTRODUCTION Almost ideal
Page 47: 4.2.4 Yellow-headed Spruce Sawfly,
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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