A Review of the Crabhole Mosquitoes of the Genus Deinocerites (Diptera, Culicidae), by J. N. Belkin and C. L. Hogue, Univ. of Calif. Pubs. in Entom., Vol. 14, No. 6, pp. 411-458, 41 figures. University of California Press, Apr. 22, 1959. Price $1.00. - Ecology of the Aspen Parkland of Western Canada, by R. D. Bird. Canada, Department of Agriculture, Publication 1066. - Conference of Biological Editors, Committee on Form and Style. 1960. Style manual for biological journals. Am. Inst. Biol. Sci., 2000 P Street, N.W., Washington, D.C. 92 p. $3 (clothbound). - The Ground-Beetles (Carabidae, excl. Cicindelinae) of Canada and Alaska, part 2, by Carl H. Lindroth. Opuscula Entomologica, Suppl. 20, 200, pp. Undated, but received at Ottawa in September, 1961. Distributed by the Entomological Society of Lund, Zoological Institute, Lund, Sweden. 20 Swedish crowns. - Hypothermia and the Effects of Cold. British Medical Bulletin, Vol. 17, No. 1, xvii + 78 pp. London, British Council, January 1961. Price 20s. - Laboratory Manual for Introductory Entomology, by Clifford J. Dennis, 65 pp., spirally bound. Wm. C. Brown Co., Dubuque, Iowa, 1959. Price $2.00. - Medical Arthropodology Laboratory Guide, by Dorald M. Allred, 84 pp., Spirally Bound. Burgess Publishing Co., Minneapolis, Minn., March 23, 1960. Price $3.00.

1962 ◽  
Vol 94 (5) ◽  
pp. 555-560 ◽  
Author(s):  
J.R. Vockeroth ◽  
W.R.M. Mason ◽  
R.H. Wigmore ◽  
W.J. Brown ◽  
J.A. Downes ◽  
...  
1993 ◽  
Vol 73 (4) ◽  
pp. 749-763 ◽  
Author(s):  
D. H. McCartney

The Aspen Parkland of western Canada constitutes a major portion of the agricultural areas of Manitoba, Saskatchewan and Alberta, with 86% of the forage production and 66% of the beef cattle herd. Although some areas still exist in the natural state, most of the Parkland has been cleared of aspen (Populus tremuloides Michx.) for farming. Introduced pasture species have been seeded, and bromegrass (Bromus inermis L.) and alfalfa (Medicago spp.) have been found to be the most productive. The addition of nitrogen and phosphorus fertilizer has been shown to nearly triple forage production in the presence of adequate moisture and favorable temperatures. Straight nitrogen has resulted in a reduction of the proportion of alfalfa in a mixed sward. The severity and time of grazing have a marked effect on pasture productivity. Bush pastures can be renovated by using selective herbicides, fire and controlled grazing to manage woody brush regrowth or by sod seeding of alfalfa in the depleted stands. Spring-seeded winter cereals can be grazed throughout the growing season or as part of a grazing rotation with perennial forages by extending the grazing season in the fall. Key words: Aspen Parkland, pasture, forage, research, review


2008 ◽  
Vol 88 (1) ◽  
pp. 19-28 ◽  
Author(s):  
D. H. McCartney ◽  
H. A. Lardner ◽  
F. C. Stevenson

Annual ryegrass or Italian ryegrass (Lolium multiflorum) can be used to improve pasture productivity through extension of the grazing season in the Aspen parkland of western Canada. A study conducted at Agriculture and Agri Food Canada Melfort, SK. and Lacombe, AB, showed that weaned calves could successfully graze Italian ryegrass late into the fall as part of the overall backgrounding system. Spring-seeded annual Italian ryegrass produced between 4300 and 6700 kg total dry matter per hectare across all sites and had an average crude protein content of 184 g kg-1 and in vitro DM digestibility of 640 g kg-1. Spring calves were early weaned in late August or conventionally weaned in October and backgrounded on Italian ryegrass pasture or a silage-based ration in drylot pens. The cost of growing Italian ryegrass was $339 ha-1 resulting in a grazing cost per day of $0.31–$0.68 depending upon the number of grazing days per ha. There were no differences in performance of animals backgrounded on Italian ryegrass pasture compared with those backgrounded in the feedlot. The total cost per head for backgrounding early-weaned calves on Italian ryegrass and finished in a feedlot was $398 compared with $429 for early-weaned calves backgrounded and finished in a feedlot, while conventionally weaned calves backgrounded and finished in a feedlot cost $418. Backgrounding calves on Italian ryegrass pasture reduced the number of days in the feedlot along with the associated cost of yardage and stored feed. Backgrounding calves in a feedlot had a yardage charge of $0.40 or higher, which added a cost in addition to stored feed costs of the ration. Backgrounding calves on extended season grazing of Italian ryegrass reduced health problems due to elimination of mixing animals in feedlot pens, less need for stored feed including storage and feeding losses and less labour to feed the cattle and haul manure in the spring. Backgrounding calves on high-quality fall pasture was more economical than backgrounding in a feedlot system. Key words: Background, steer, pasture, economics


2021 ◽  
Author(s):  
Johnny Malciw

This major research paper explores the promotional immigration material created by the Department of Agriculture during Sir John A. Macdonald's time as Prime Minister and within the context of western migration. The paper begins by examining the historiography of Canadian western expansion and continues by exploring the idea of western development as espoused by the business elites in Upper and Lower Canada. Sir John A. Macdonald's National Policy, which focused on increased tariffs, the completion of a transnational railway, and immigration are explored as well. Many attribute the active promotion of Canada to Europeans overseas with Clifford Sifton and the Laurier government. Sifton is known for having envisioned an agricultural paradise in western Canada and the idea of attracting hardworking peasant farmers, yet the contents of the promotional materials produced by the Department of Agriculture contain the same themes.


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