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Articles 10321 - 10350 of 10365
Full-Text Articles in Physical Sciences and Mathematics
The Prairie Naturalist Volume 5, No.2. June 1973
The Prairie Naturalist Volume 5, No.2. June 1973
The Prairie Naturalist
SOME ASPECTS OF MINK-WATERFOWL RELATIONSHIPS ON PRAIRIE WETLANDS ▪ Robert T. Eberhardt
SUMMER AND FALL FOODS OF MINK ON THE J. CLARK SALYER NATIONAL WILDLIFE REFUGE ▪ Wayne F. Cowan and James R. Reilly
GIANT CANADA GEESE ▪ S. O. Kolstoe
SOME LICHENS OF BOG AND PAPER BIRCH FROM NORTH DAKOTA ▪ Dennis T. Disrud and Thomas D. Trana
A PALEOCENE FOSSIL LOCALITY IN SOUTHEASTERN SASKATCHEWAN: THE SHORT CREEK SECTION ▪ Paul L. Broughton
NOTE: A new orchid for North Dakota ▪ Robert E. Stewart
The Prairie Naturalist Volume 5, No. 1. March 1973
The Prairie Naturalist Volume 5, No. 1. March 1973
The Prairie Naturalist
DATES FOR FIRST FLOWERS ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1972 ▪ Robert N. Randall 7
NORTHERN ENVIRONMENTAL COUNCIL CORPORATE AWARD, 1972—RESPONSE ▪ K. A. Carlson
ALGAL ASSOCIATIONS IN NEARSHORE WATERS OF GOLDEN LAKE, A SHALLOW PRAIRIE LAKE IN EASTERN NORTH DAKOTA ▪ Douglas W. Larson
NOTE
Observations of Wintering Bald Eagles at Garrison Dam, North Dakota ▪ Frank A. Splendoria
Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Of the four time of planting trials twodefinitely showed superiority of earlier seeding (73BA5, 73E6). The two trials in the Southwest (73BR14 and 73MT7) gave highest yields with June sowing compared to May. Three trials (73BR14, 73E6 and 73BA5) appear to have a Variety x Time interaction for plant density, but no definite trend for either Uniharvest or Unicrop although later sowing reduced plant density. Seeding rates in excess of 82 kg/ha gave the highest yields in all trials. The rate of seeding experiments (73BA5 and 73MT7) show that the best crop density for yield (graph) lies between 8 and …
Summary Of 1973 Field Experiments With Advisers, M L. Poole
Summary Of 1973 Field Experiments With Advisers, M L. Poole
Experimental Summaries - Plant Research
SECTION I: Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed. SECTION II: Rapeseed Variety Trials 1973 including times of planting. This report provides a record of two series of trials carried out in 1973. Trials - 73A4, 73AL10, 73AL11, 73AL12, 73BR9, 73BR12, 73BR13, 73ES7, 73ES8, 73GE3, 73JE4, 73JE5, 73KA3, 73KA7, 73M2, 73MO11, 73MO13, 73MT5, 73MT6, 73NA6, 73NA7. Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed, series of 12 trials were set up, mainly in the southern agricultural areas, near previous …
1973 Rates Of Phosphate On Lupin Yield, G Walton
1973 Rates Of Phosphate On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Comments on results New land sites (Graphs 1 & 2) The three sites were very responsive with the point of inflexion about 600 kg/ha super rate (similar to 1972 result). The seed x super rate interaction shows the quicker response to super with .higher seeding rates. Low super bank (800 kg/ha) (GRAPH 3) The two sites showed very little response to super applied. On the Eradu sandplain no response to super for either Unicrop or Wheat. On the Watheroo yellow sandplain ( 73M015) the two lupin cultivers and the wheat gave different responses. High super bank ( >1 OOOkg/ha) (GRAPH …
1973 Lupin Cultivar Comparison, G Walton
1973 Lupin Cultivar Comparison, G Walton
Experimental Summaries - Plant Research
Comparison of lupin varieties - 73LG6, 73LG7, 73LG78, 73A15, 73BA6, 73C3, 73MT8, 73MT20, 73N3.
1973 Pasture Species Investigations - High Rainfall Area, D. A. Nicholas
1973 Pasture Species Investigations - High Rainfall Area, D. A. Nicholas
Experimental Summaries - Plant Research
1. Clover cultivar grazing trial - North Bannister 2. Clover cultivar grazing trial - Chowerup 3. Pasture types x stocking rate trial - Denmark Research Station 4. Low oestrogen clover cultivar trial - Mobrup 5. Stocking rate and conservation for steer beef production - Mt. Barker Research Station. 6. Perennial versus annual grass grazing trial – Manjimup Research Station. 68NA1, 701BR15, 72D1, 68BR27, 71MTT46, 72MN5,
1973_Pasture Species Investigations - Wheatbelt, N. R. Mckeown
1973_Pasture Species Investigations - Wheatbelt, N. R. Mckeown
Experimental Summaries - Plant Research
Results from trials comparing the growth and persistence of a number of annual pasture legumes in 1973 are presented in this report. Rainfall conditions during the year are described briefly and a table of annual and growing season rainfall at relevant centres is appended. The experiments are grouped as follows according to average annual rainfall:- Zone A - Average annual rainfall 400 mm. Zone B - Average annual rainfall 345 - 400 mm. Zone C - Average annual rainfall 345 mm. and then further on soil type. 70GE4, 70ME3, 70ME4, 70NA3, 70TS2, 70TS5, 71LG16, 71TS22, 72LG3, 72LG26,
1973 Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
1973 Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Of the four time of planting trials two definitely showed superiority of earlier seeding (73BA5, 73E6). The two trials in the Southwest (73BR14 and 73MT7) gave highest yields with June sowing compared to May. Three trials (73BR14, 73E6 and 73BA5) appear to have a Variety x Time interaction for plant density, but no definite trend for either Uniharvest or Unicrop although later sowing reduced plant density. Seeding rates in excess of 82 kg/ha gave the highest yields in all trials. The rate of seeding experiments (73BA5 and 73MT7) show that the best crop density for yield (graph) lies between 8 …
Progress And Data Available For Investigations, D Tennant
Progress And Data Available For Investigations, D Tennant
Experimental Summaries - Plant Research
This report summarises progress and data available for the following investigations. 1. Fallow Re-assessment. 2. Root Penetration and Distribution in Wheat. 3. Moisture use by Lupins, Rape and Wheat. 4. Variety Investigations in respect of Root Growth. 72M29, 72MO41,
Summary Of Trial Results - 1973, N. R. Mckeown
Summary Of Trial Results - 1973, N. R. Mckeown
Experimental Summaries - Plant Research
Trials in Progress During 1973 observations were made on 11 small plot legume species· trials and 11 grazing trials. In 1974 the small plot trials will remain the same and the grazing trials will be reduced to 8. This report summarizes the results from the grazing trials under the following headings:- Seasonal Conditions. Grazing Experiments. 68M023 - Legume Grazing Management·Trial,. West Moora. 71LG17 - Comparison of Production from Cyprus Medic and Volunteer Pasture. Comparison of Production from Tornafield Medic, Serradella and Subterranean.Clover. 70ME2 - Walgoolan 71WH13 - Wongan Hills 69M017 - Watheroo 69LG24 - Lake Grace. Low Oestrogen Legume Grazing …
1973 Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
1973 Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Comments on results - Of the four time of planting trials two definitely showed superiority of earlier seeding (73BA5, 73E6). The two trials in the Southwest (73BR14 and 73MT7) gave highest yields with June sowing compared to May. Three trials (73BR14, 73E6 and 73BA5) appear to have a Variety x Time interaction for plant density, but no definite trend for either Uniharvest or Unicrop although later sowing reduced plant density. Seeding rates in excess of 82 kg/ha gave the highest yields in all trials. The rate of seeding experiments (73BA5 and 73MT7) show that the best crop density for yield …
Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden
Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden
Experimental Summaries - Plant Research
A total of 53 pasture trials were topdressed. Of these, 37 trials were quantitatively assessed at different times during the growing season. Of the 15 wheat trials sown, only four trials gave useful results because of multiple drilling techniques used on most trials. Until the trial results have undergone comprehensive statistical analysis, no conclusions can be drawn. about the levels of response or "optimum" rates of superphosphate application at individual sites. However, because of the very short growing season in 1972 responses were generally poor. It appears that nil superphosphate application would have been optimum for animal production in the …
1973 Rates Of Phosphate On Lupin Yield, G Walton
1973 Rates Of Phosphate On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Comments on Results - New Land sites (Graphs 1, 2) - The three sites were very responsive with the point of inflexion about 600 kg/ha super rate (similar to 1972 result). The seed x super rate interaction shows the quicker response to super with higher seeding rates. Low Super Bank (800 kg/ha) (GRAPH 3) - The two sites showed very little response to super applied. On the Eradu sandplain no response to super for either Unicrop or Wheat. On the Watheroo yellow sandplain (73M015) the two lupin cultivers and the wheat gave different responses. High Super Bank (>1 OOOkg/ha) …
Progress And Data For Investigation, D Tennant Dr
Progress And Data For Investigation, D Tennant Dr
Experimental Summaries - Plant Research
1. Fallow Re-assessment. 2. Root Penetration and Distribution in Wheat. 3. Moisture use by Lupins, Rape and Wheat. 4. Variety Investigations in respect of Root Growth. 72M9, 73MO41. Locations: Lancelin - 73M041, Wyalkatchem 73N038, Bering Siding - 73N040 (2), Tammin - 73N041, Cunderdin - 73no42, Meckering - 73N043, Bodallin - 73ME26, Walgoolan - 73ME27, Ulva Siding - 73ME29, Shackleton - 73ME30, Yelbeni - 73ME31 (3).
1973 Long Term Rotation Trials, Ian Rowland
1973 Long Term Rotation Trials, Ian Rowland
Experimental Summaries - Plant Research
The results shown are the yield of grain harvested from crops grown after various lengths of pasture ley. Experiments - W56H, 66M29, 67BA6, 68E5, 68SG5, 69GE20,
The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972
The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972
The Prairie Naturalist
THE SANDHILL CRANE WITH EMPHASIS ON ASPECTS
RELATED TO NORTH DAKOTA ▪ Douglas H. Johnson and Robert E. Stewart
SIZE AND COLORATION CHARACTERISTICS OF NEOTENIC SALAMANDERS IN DEVILS LAKE, N. D. ▪ Douglas W. Larson
BIRDS' EGGS: AN AID TO NATURE APPRECIATION ▪ S. O. Kolstoe
BIRD MORTALITY AT FOUR TOWERS IN EASTERN NORTH DAKOTA — FALL 1972 ▪ Michael Avery and Tom Clement
POPULATION IRRUPTION OF THE LEAST WEASEL (Mustela nivalis) IN EAST CENTRAL NORTH DAKOTA ▪ John T. Lokemoen and Kenneth F. Higgins
The Prairie Naturalist Volume 4, No. 2. June 1972
The Prairie Naturalist Volume 4, No. 2. June 1972
The Prairie Naturalist
EDITORIAL: Coordination: A Step for Environmental Protection ▪ Paul B. Kannowski
AN ANALYSIS OF BARN OWL AND GREAT HORNED OWL PELLETS FROM WESTERN NEBRASKA ▪ Eric A. Rickart
SUMMER OBSERVATIONS OF THE SHORT-EARED OWL IN THE RED RIVER VALLEY ▪ W. J. Walley
ADDITIONAL GLAUCOUS GULL RECORD FOR NORTH DAKOTA ▪ B. J. Rose
MIGRATION OF BIRDS IN NORTH DAKOTA DURING FALL 1971 ▪ Douglas H. Johnson, John T. Lokemoen and Paul F. Springer
WIDGEONGRASS BALLS ON ALKALI LAKES ▪ George A. Swanson and Paul F. Springer
A PROBABLE INSTANCE OF SONGBIRD COLLISION MORTALITY ▪ R. Wayne Weier
MUNICIPAL FLOODPLAIN …
The Prairie Naturalist Vol. 4, No.1. March, 1972
The Prairie Naturalist Vol. 4, No.1. March, 1972
The Prairie Naturalist
EDITORIAL: Advertising by Power Suppliers ▪ William A. Buresh
FIRST FLOWERS OF TREES, SHRUBS AND VINES IN THE FARGO, NORTH DAKOTA AREA ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1971 ▪ Robert N. Randall
ENVIRONMENTAL LEGISLATION IN NORTH DAKOTA—EXPECTATIONS AND REALITIES ▪ Paul B. Kannowski
SEASONAL NOTES ON PLANKTON ALGAE OF EAST STUMP LAKE, NORTH DAKOTA ▪ Dean W. Blinn
A SKUNK WITH A GLASS COLLAR ▪ Peter W. Rakowski
SPRING MIGRATION OF BIRDS IN NORTH DAKOTA IN 1971 ▪ Paul F. Springer, Douglas H. Johnson and John T. Lokemoen
NOTE
Red throated loon observed on Lake Ashtabula, …
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist
EDITORIAL: Badlands-Old and New ▪ Paul B. Kannowski
SEASONAL INVESTIGATIONS OF ALGAE FROM DEVILS LAKE, NORTH DAKOTA ▪ Richard Verch and Dean W. Blinn
THE VASCULAR FLORA OF PEMBINA COUNTY, NORTH DAKOTA ▪ Rays E. Willenbring and William T. Barker
LET'S EAT WILD ▪ Alan M. Cvancara
SURF SCOTER IN NORTH DAKOTA ▪ Harold A. Kantrud
SNOW GOOSE-CANADA GOOSE HYBRIDS ▪ David C. McGlauchlin
NOTES
Cowbird parasitism of an upland plover nest ▪ Kenneth F. Higgins
Birds sighted within one hour from one observation point in Burleigh County, North Dakota ▪ William A. Buresh
Golden-winged warbler in Burleigh County, North …
The Prairie Naturalist Volume 3, No.2. June, 1971
The Prairie Naturalist Volume 3, No.2. June, 1971
The Prairie Naturalist
EDITORIAL: Environmental Rights ▪ Paul B. Kannowski
RIVER BASINS PLANNING ▪ H. A. Hendrickson
WATER RESOURCE PLANNING GONE AMUCK ▪ Charles H. Stoddard
THE INTERACTION OF CITIZENS' GROUPS AND GOVERNMENT AGENCIES WITH RESPECT TO ENVIRONMENTAL PROBLEMS ▪ Robert L. Burgess
WORDS AND MEANINGS ▪ Paul T. Crary
ENFORCEMENT OF NORTH DAKOTA ENVIRONMENTAL LAWS AND REGULATIONS ▪ Robert E. Beck
BIRDS OBSERVED IN NORTH DAKOTA DURING THE WINTER OF 1970-71 ▪ John T. Lokemoen and Paul E. Springer
STATUS OF CLARK'S NUTCRACKER IN NORTH DAKOTA ▪ Lewis W. Oring and Robert W. Seabloom
WINGED ANTS AS FISH FOOD ▪ Charles H. …
The Prairie Naturalist Volume 3, No.1 March, 1971
The Prairie Naturalist Volume 3, No.1 March, 1971
The Prairie Naturalist
EDITORIAL: One House for Natural Resource Management ▪ Paul B. Kannowski
CHECKLIST OF BIRDS IN NORTH DAKOTA ▪ Robert E. Stewart
ADDITIONAL INFORMATION ON THE WOOD DUCK IN NORTH DAKOTA ▪ Edmund A. Hibbard
NOTES ON DANDELIONS ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1970 ▪ Robert N. Randall
THE EROSION OF ONE OF MAN'S MOST PRECIOUS NATURAL RESOURCES: HIS FREEDOM OF CHOICE ▪ Gordon L. Iseminger
NOTEWORTHY PLANTS OF THE NORTH DAKOTA PRAIRIE COTEAU FOREST ▪ W. Carter Johnson
NOTE — Duck mortality caused by wind ▪ Harold Kantrud
Trial Results 1971, M L. Poole
Trial Results 1971, M L. Poole
Experimental Summaries - Plant Research
This report summarizes data for the following trials:
Trial 1. Rape varieties x time of seeding - Mt Barker R.S.
Trial 2. Rape varieties x time of seeding - Gibson
Trial 3. Rape varieties x time of seeding - Badgingarra R.S.
Trial 4. Rape harvesting trial-moisture content - Mt. Barker R.S.
Trial 5. Time of seeding x rates of seeding safflower
Trial 6. Time of seeding x rates of seeding sunflower
Trial 7. Depth control drill trial on rape.
Trial 8. Method of seeding trial on rape.
Trial 9. Sandblast trial - EDRS - Failed.
Trial 10. Rape varieties x …
Maintenance P And S For Pastures In The Low Rainfall Areas., Tony Albertsen
Maintenance P And S For Pastures In The Low Rainfall Areas., Tony Albertsen
Experimental Summaries - Plant Research
Maintenance P and S for pastures in the low rainfall area. To determine the best rates of Gypsum and a Phosphate Fertiliser required to maintain optimum pasture growth on old land. Stocking rate and rate of super on Cyprus Barrel Medic Pasture 66M30. To determine if topdressing annual medic pasture on heavy wheatbelt land increases carrying capacity or animal production per head. Also to determine the relationship between super rate and animal production. Continuous Cropping with N.P.S. To determine the number of continuous cropping on different soil types using N.P. and S fertilisers. 69NO1 T. HENDERSON· QUELAGETTING 1970, ·1971 MEAN …
1971 Field Experimental Results, T. O. Albertsen
1971 Field Experimental Results, T. O. Albertsen
Experimental Summaries - Plant Research
Maintenance P and S for pastures in low rainfall areas
66MO6, 67MO1, 68NO5, 68TS1, 65A1, 65C5, 69WH1,66KA7, 66LG1, 68LG1, 65N5, 67GE2, 67NO5, 66NA3, 66ME3, 66NO9.
Stocking rate and rate of super on Cyprus barrel Medic pasture
66M30.
Continuous cropping with N.P.S.
69NO1, 60NA1, 69ME1,69TS1.
Super rates for wheat
71GE5, 71GE6, 71GE40, 71J22, 71N15
Gypsum rates on rape
71GE31, 71TS24, 71TS25, 71NO22, 71NA22,71NA23, 71KA1, 71KA14, 71BY1, 71BR15, 71AL9.
Rates of phosphorus and sulphur on rape and wheat
71A16
The Prairie Naturalist Volume 2, Nos. 3 And 4 September–December, 1970
The Prairie Naturalist Volume 2, Nos. 3 And 4 September–December, 1970
The Prairie Naturalist
EDITORIAL: Ecology and Environmental Education ▪ Keith R. Stamm
PEOPLE IN PERIL ▪ Thomas L. Kimball
MEN IN MAN'S ENVIRONMENT ▪ Robert L. Burgess
ENERGY AND MAN'S ENVIRONMENT ▪ Dale Henegar
MINERALS AND SOILS IN MAN'S ENVIRONMENT ▪ Wilson M. Laird
WATER IN MAN'S ENVIRONMENT ▪ Norman Peterson
THE ATMOSPHERE IN MAN'S ENVIRONMENT ▪ Gene A. Christianson
WHY ENVIRONMENTAL EDUCATION IN THE LIFE SCIENCES? ▪ James R. Reilly
ECOLOGICAL EDUCATION IN THE PHYSICAL SCIENCES ▪ William P. Eastwood
MASS MEDIA AND ENVIRONMENTAL EDUCATION ▪ Richard Palmer
THE JUDGMENT OF THE JACKAL ▪ C. Benson Thomerson
THE ROLE OF COLLEGES AND …
The Prairie Naturalist Volume 2, No.2 June, 1970
The Prairie Naturalist Volume 2, No.2 June, 1970
The Prairie Naturalist
EDITORIAL: Ecocide on the Sheyenne? ▪ Paul B. Kannowski
NEW RECORDS OF VASCULAR PLANTS IN NORTH DAKOTA ▪ Robert E. Stewart
SOME LOCAL NATIVE PLANT LOSSES AND SOME SAL V AGE ▪ O. A. Stevens
CHRISTMAS BIRD COUNTS IN NORTH DAKOTA ▪ Robert N. Randall
ENVIRONMENTAL DESIGN IN COMMUNITY PLANNING ▪ Cameron Man
DISTRIBUTION OF THE SCIRPUS VALIDUS COMPLEX IN NORTH DAKOTA ▪ Richard L. Ward
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist Volume 2, No. 1. March, 1970
The Prairie Naturalist
EDITORIAL: Speaking of Ecologists ▪ Paul B. Kannowski
NEEDED: AN ETHICAL BASIS FOR ENVIRONMENTAL POLICY ▪ Gordon L. Iseminger
THE POPULATION PARADOX ▪ Gary L. Pearson
THE ENVIRONMENTAL CRISIS—A CALL TO ACTION ▪ Glen A. Sherwood
NORTH DAKOTA—1970 ▪ Philip B. Aus
Work Completed Or In Progress 1970, R Weir
Work Completed Or In Progress 1970, R Weir
Experimental Summaries - Plant Research
1. Yield selection characteristics - 70WH5, 70M15. 2. Sorghum development - 70GL2, 70GL9. 3. Moisture stress effects on wheat - 69GL15, 70GL3, 70GL8. 4. Flower abortion of Lupins - 70GL18, 70GL19, 70GL20, 70GL21, 70GL22. 5. Salarimeter Readings
The Control Of Algae, G R W Meadly
The Control Of Algae, G R W Meadly
Journal of the Department of Agriculture, Western Australia, Series 4
CONDITIONS in areas of still, stored water in Western Australia can easily become ideal for the development of algae and control measures may become necessary in farm dams and swimming pools.