Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 34

Full-Text Articles in Life Sciences

Annual Medicago Ecotypes From North West Libya, M Khalil, C M. Francis, N J. Trotman Nov 1977

Annual Medicago Ecotypes From North West Libya, M Khalil, C M. Francis, N J. Trotman

Technical Bulletins

Nine Medicago species were represented in collections from 10 sites in North West Libya. This report outlines species distribution, maturity characteristics and coumestrol content of the ecotypes collected. Medicago laciniata was the most common species collected but there appeared to be a relationship to soil type amongst other species. M. truncatula predominated on heavier textured soils but M. tornata and M. littoralis were more frequent on sandy soils. The Libyan ecotypes were typically early flowering with a rapid rate of burr maturation. They contained low to moderate levels of the plant oestrogen coumestrol in dry stems. Evaluation work was carried …


The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977 Sep 1977

The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977

The Prairie Naturalist

UPLAND NESTING OF AMERICAN BITTERNS, MARSH HAWKS, AND SHORT-EARED OWLS ▪ H. F. Duebbert and J. T. Lokemoen

ROADSIDE NESTING BY PRAIRIE GROUSE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky

BOHEMIAN WAXWING POPULATIONS AND WINTER ECOLOGY IN NORTH DAKOTA ▪ E. L. Bakke

AGEING ARCHAEOLOGICAL BISON BY DENTAL ANNULI ▪ J. C. Pigage and M. G. McKenna

COMPARISON OF COYOTE AND COYOTE X DOG HYBRID FOOD HABITS IN SOUTHEASTERN NEBRASKA ▪ B.R. Mahan

NOTES

Abnormal Mid-May Occurrence of White-fronted Geese in Sheridan County, North Dakota ▪ D.P. Kibbe and J. A. Roppe

Common Grackle Preys on Spotted Sandpiper Chick ▪ …


The Prairie Naturalist Volume 9, No. 2. June 1977 Jun 1977

The Prairie Naturalist Volume 9, No. 2. June 1977

The Prairie Naturalist

PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson

GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands

YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green


The Prairie Naturalist Volume 9, No. 1. March 1977 Mar 1977

The Prairie Naturalist Volume 9, No. 1. March 1977

The Prairie Naturalist

NESTING BY FERRUGINOUS HAWKS AND OTHER RAPTORS ON HIGH VOLTAGE POWERLINE TOWERS ▪ D. S. Gilmer and J. M. Wiebe

ARTHROPODS CONSUMED BY AN IMMATURE MARBLED GODWIT ▪ R. M. Timm and R. M. Zink

NOTES

Black-headed Grosbeak in Jamestown, North Dakota ▪ R. Lender

Summer Record of Red-breasted Nuthatch in North Dakota ▪ R. Lender

BOOK REVIEWS

Minnesota's Wild Flowers ▪ Staff

In Search of Eagles ▪ J. Lokemoen

Forest and Range Research ▪ Staff

An Economic Analysis of Recycling ▪ Staff


Blueberry Research Progress Report, G R. Benoit, W J. Grant, Amr A. Ismail, Howard Y. Forsythe Jr, Paul R. Hepler, Arlen D. Draper, John M. Smagula, D C. Mcgee, Homer B. Metzger, Stewart Goltz, Alan Langille, Ruth H. True Mar 1977

Blueberry Research Progress Report, G R. Benoit, W J. Grant, Amr A. Ismail, Howard Y. Forsythe Jr, Paul R. Hepler, Arlen D. Draper, John M. Smagula, D C. Mcgee, Homer B. Metzger, Stewart Goltz, Alan Langille, Ruth H. True

Wild Blueberry Research Reports

The 1976 edition of the Blueberry Research Progress Report was prepared for the Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:

1. Effect of Plant-Water Stress on "Lowbush" Blueberry Growth, Yield and Quality

2. Insects Affecting the Blueberry

3. The Development of Blueberry Varieties Adapted to Maine

4. Weed Control in Blueberry Fields

5. Pruning of Blueberries

6. Integrated Management of Blueberry Fields

7. The Physiology and Biochemistry of the Development of the Lowbush Blueberry Fruit

8. Survey of Red Leaf Disease of Blueberries

9. Blossom Blight of Blueberries

10. Blueberry Marketing …


Phosphorus And Sulphur Group, J. W. Bowden, R J. Lunt, K F. Longbottom Jan 1977

Phosphorus And Sulphur Group, J. W. Bowden, R J. Lunt, K F. Longbottom

Experimental Summaries - Plant Research

Long Term Trials Stocking and superphosphate trials - 66M30, 68BR7. Maintenance Phosphorus x Sulphur trials - 65A1, 65N5, 65C5, 69WH15, 68B1, 69AL3 and 67N05. Low Rainfall Crops and Pastures. Residual phosphorus trials - 76ES8, 75KA4, 75LG26 and 76NA5. Miscellaneous Cropping Trials. Rate of phosphorus on wheat - 77ES2, 77ME5, 77N03. N. P and seed rates on wheat - 77JE1. Row spacing, phosphorus and seed rate on wheat - 77ME6. Phosphorus on nitrogen build up - 77M033. Rate of super on old land lupins - 77A18 & 19, 77BA13 & 14, 77E20. Pasture Trials. Phosphorus and Sulphur on old land pasture …


Longevity Of Doublegee Seed Under Continuous Pasture, D J. Gilbey Jan 1977

Longevity Of Doublegee Seed Under Continuous Pasture, D J. Gilbey

Experimental Summaries - Plant Research

Locality: Avondale, Wongan Hills and Chapman Research Stations. Background. Since 1974 pegged areas on the three research stations have been under continuous pasture and have been sampled annually to study the fate of the viable doublegee seed population. Each site was sprayed for doublegee control in the growing season before the first samples were taken in late summer of 73/74. The sites were again sprayed in the 1974 growing season except for Wongan Hills. The Wongan Hills site was cropped in 1976 and no further data is available. 74C7, 75WH65, 75WH66, 76AL11, 76C9, 76C6, 77C3, 77GE9, 77LC26, 77ME28, 77M028, 77N034, …


Investigations Of Ryegrass Toxicity, B A. Stynes Jan 1977

Investigations Of Ryegrass Toxicity, B A. Stynes

Experimental Summaries - Plant Research

Investigations of ryeqrass toxicity. Residual effect of nematicide on ryegrass toxicity a season after treatment (Katanning, Gnowangerup) - 76KA30. Survival of Anguina sp. and emergence from galls (Gnowangerup) - 76KA28. Effect of nematicides on the development of toxicity in ryegrass pasture (Gnowangerup) - 77KA22. Table 1. Effect of phenamiphos on the development of nematode and bacterial galls in ryegrass pasture. Effect of burning, cropping and cultivation on ryegrass toxicity (Gnowangerup) - 77KA21. Table 1. The effect of cropping and cultivation on the number of nematode and bacterial galls per gram of threshed ryegrass seed. Table 2. The effect of duration …


Nitrogenous Fertilisers For Cereals - Results From 1977 Trials On Wheat, Oats And Barley, M. G. Mason Jan 1977

Nitrogenous Fertilisers For Cereals - Results From 1977 Trials On Wheat, Oats And Barley, M. G. Mason

Experimental Summaries - Plant Research

Rates of Nitrogen on Wheat, Oats and Barley - Soil Test. In this, the third year of this programme, 44 sites were selected and soil sampled during February - March. Thirty seven of these trials consisted of four replications on wheat only and the other seven consisted of three replications on wheat, oats and barley. All reps were soil sampled separately. In each rep. of the 37 trials, 20 samples were taken to 10 cm depth with pogo stick samplers. In the. other seven trials 50 samples per rep. were taken. In addition, from three holes at random across each …


Cereal Foliage Disease Survey, T N. Khan, A. G. P. Brown Jan 1977

Cereal Foliage Disease Survey, T N. Khan, A. G. P. Brown

Experimental Summaries - Plant Research

Cereal Foliage Disease Survey A dry season reduced disease to insignificant levels (as measured by this survey) in all areas except the south west. Late rains may have produced some damage to wheat by S. nodorum however but this was probably confined to southern areas. In barley net blotch which has been declining re appeared a major disease in 1977 excepting high rainfall areas, where scald continued to be severe. The level of scald infection was considerably lower which may be associated with relatively higher temperatures and low rainfall. Variety Clipper continued to show high degree of tolerance to net …


Barley Yellow Dwarf Virus - Effect On Yield Of Clipper Barley, G D. Mclean, T N. Khan Jan 1977

Barley Yellow Dwarf Virus - Effect On Yield Of Clipper Barley, G D. Mclean, T N. Khan

Experimental Summaries - Plant Research

Barley Yellow Dwarf Virus - Effect on Yield of Clipper Barley 77B4, 77MN6. Location: Manjimup Research Station, Bramley Research Station.


Take-All Of Cereals And Cereal Seed Dressings, G D. Macnish Jan 1977

Take-All Of Cereals And Cereal Seed Dressings, G D. Macnish

Experimental Summaries - Plant Research

Take-all of cereals. Take-all surveys. Effect of nitrogen sources on take-all: 76LG25 Wheat, 77MT19 Wheat, 77JE31 Barley, 77MT17 Barley, 77LG20 Oats, 77JE5 Wheat, 77LG6 Wheat, 77E4 Wheat, 77ES6 Wheat, 77GE10 Wheat. Effect of rates of (NH4)2 SO4 and Na NO3 on take-all - 77E6 Wheat, 77ES Wheat. Effect of rates of (NH4)2 SO4 on take-all - 77LG7 Wheat, 77JE6 Wheat. Soil pH and take-all - 77LG25 Cleaning crops and take-all control - 76E6, 76N5, 76M47, 76A7, 76LG27. Spray-fallow and time of planting - 76GE35 9 76LG26, 76LG26, 76LG38. Effect of rates of sowing on take-all - 77JE7. Long term rotations …


Minimum Tillage Trials 1977, G. A. Pearce Jan 1977

Minimum Tillage Trials 1977, G. A. Pearce

Experimental Summaries - Plant Research

Minimum tillage trials 1977. Locations: Wongan Hills R.S., Avondale, Merredin, Mt. Barker, Esperance. Sites: At each station two sites were used, the first was under crop in 1976 and the trial will be repeated each year on the same area. The second site was under pasture in 1976 and was due to be cropped in 1977 as part of the normal district practice. The trials will be planted on a similar pasture site in 1978. Results. Apart from crop yields, weed counts (before spraying) and crop plant numbers were taken. Other measurements were made by various research officers and reported …


Summary Of 1977 Field Trials, M. L. Poole Jan 1977

Summary Of 1977 Field Trials, M. L. Poole

Experimental Summaries - Plant Research

Competition between wheat and annual ryegrass at six rates of seeding wheat, six ryegrass densities and five rates of nitrogen fertiliser (Wongan Hills Research Station) - 77WH6. Time of removal of annual ryegrass from a wheat crop (Wongan Hills Research Station)- 77WH7. Effect of different tillage systems on establishment and yield of wheat (Merredin Research Station) - 77M52. Rapeseed variety trial (Lancelin) - 77MO30. Shedding losses in rapeseed (Mount Barker Research Station) - 77MT25. Time of germination of ryegrass on wheat yield (Wongan Hills Research Station) - 77WH47. Sunflower agronomy trial (Bramley research Station) - 77B5. Other trials: 1. Co-operative …


Planting Systems Investigations, D Tennant Jan 1977

Planting Systems Investigations, D Tennant

Experimental Summaries - Plant Research

Planting systems investigation. l. Planting depths. 2. Soil water (0-lOcm) near planting. 3. Mineralised N near planting. Planting systems investigation. Two trials were initiated on each of five Research Stations in collaboration with G.A. Pearce and J.E. Holmes. Details in respect of treatments, operations, fertilisers, rainfall, yields and weed populations are provided by these officers in their respective reports. For the purposes of this report, attention is drawn to two findings of a preliminary study of similar planting systems in 1976. TABLE 1. DepthS of planting (cm). Means of 40 to 80 estimates - 77A16, 77E18, 77M13, 77MT15, 77WH17. TABLE …


Field Crop And Pasture Experiments, P. Mcr. Wood Jan 1977

Field Crop And Pasture Experiments, P. Mcr. Wood

Experimental Summaries - Plant Research

Black spot of peas (Ascochyta I Mycosphaerella complex) Sclerotinia and Phomopsis infection of lupins (Mount Barker Research Station) - 77MT41. Resistance of lupins to Phomopsis - Avondale, Mt. Barker, Wongan Hills.


Long Term Rotation Trials 1977, I Rowland Jan 1977

Long Term Rotation Trials 1977, I Rowland

Experimental Summaries - Plant Research

W56H, 66M29, 67C13, 67N4, 68E5, 68SG5,73SG16.

Lupins, Barley, Clover.


Summer 1977, Daniel I. Levy, John R. Hall Iii, Tom Gentle, Carl F. Gortzig Jan 1977

Summer 1977, Daniel I. Levy, John R. Hall Iii, Tom Gentle, Carl F. Gortzig

Turf Bulletin

  1. Solar Energy: Wave of the Future? (page 3)
  2. Turfgrass Nutrition: Current Thinking and Future Challenges (7)
  3. Make Wine--Not Waste--with Whey (12)
  4. Potted Florist Crops for Everyday Use (15)
  5. UMass Turfgrass Research Fund (19)


Winter 1977, K. W. Brown, R. L. Dubie, Brian M. Silva, J. F. Wilkinson Jan 1977

Winter 1977, K. W. Brown, R. L. Dubie, Brian M. Silva, J. F. Wilkinson

Turf Bulletin

  1. Influence of Management and Season on Fate of N Applied to Golf Greens (page 3)
  2. Potassium: The Mystery Element (9)
  3. Effect of IBDU and UF Rate, Date and Frequency of Application on Merion Kentucky Bluegrass (14)


Fall 1977, Edwin B. Seay, Brian M. Silva Jan 1977

Fall 1977, Edwin B. Seay, Brian M. Silva

Turf Bulletin

  1. Municipal Golf Course Can be Profitable (page 3)
  2. An Overview of Nitrogen With Emphasis on Its Effects on Turfgrasses (7)
  3. The Ideal Par 3 Hole (11)
  4. UMass Turfgrass Research Fund (20)


Spring 1977, Neal Weaver, Joseph Troll, Robert N. Carrow, John Griffin Jan 1977

Spring 1977, Neal Weaver, Joseph Troll, Robert N. Carrow, John Griffin

Turf Bulletin

  1. Thomas Jefferson (page 3)
  2. Herbicide Evaluation for Crabgrass Control--1976 (9)
  3. Fourty-Sixth Annual Turf Conference and First Industrial Show Program (10)
  4. Dollar Spot Fungicide Control Trial--1976 (13)
  5. All About Gardening (14)
  6. Herbicide Trials on Broadleaf Weeds and a Phytotoxicity Test--1976 (17)
  7. Helminthosporium Leaf Spot Fungicide Control Trial--1976 (17)
  8. Microbes--Cleaner-uppers for Polluted Waters (18)


Ryegrass Disease Could Spread, Department Of Agriculture, Western Australia Jan 1977

Ryegrass Disease Could Spread, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

The disease annual ryegrass toxicity kills sheep and cattle grazing pastures which contain infected annual ryegrass. In Western Australia the first confirmed outbreak was in 1968 in the Gnowangerup area.

The disease has noe spread over a range of 450 kilometres and with a total area of perhaps 100 000 hectares. because annual ryegrass is the major sown pasture grass in W.A. the disease could spread throughout the South-West.

There are some precautions that can be taken.


Lupin Trials, J Moore Jan 1977

Lupin Trials, J Moore

Experimental Summaries - Plant Research

Trials in lupins this year concentrated on testing herbicide for post emergence use in lupins. Of the 20 herbicides tested 12 did not cause significant decreases in crop density and/or yield. However, weed control was often poor and the herbicide phytotoxicity tended to vary between sites. (Chapman, Badgingarra and Avondale). The Chapman and Avondale trials were not harvested because of drought. Trials in 1978 should determine if any of the herbicides tested can safely be recommended. Lupins - summary. Post emergence lupin herbicides (Badgingarra Research Station) - 77BA36. Post emergence herbicides for lupins (Chapman Research Station) - 77C18. Post emergence …


Pasture Species Investigations - High Rainfall Area 1976, D A. Nicholas Jan 1977

Pasture Species Investigations - High Rainfall Area 1976, D A. Nicholas

Experimental Summaries - Plant Research

Contents Clover cultivar grazing trial (N. Bannister) - NOT in this document. Perennial versus annual grass grazing trial (Manjimup Research Station) - 72MNS. Pasture types x stocking rate trial (Denmark Agricultural High School) - 72D1. Clover cultivar evaluation trial (Denmark Research Station) - 8. The final yield sampling in December was not obtained through cattle having broken into the area. Clover cultivar evaluation trial (Karridale) - 77BU10. Clover cultivar evaluation trial (Denmark Research Station) - 77D5, 77DF, Clover cultivar evaluation trial (Wellstead) - 77AL22. Clover cultivar Evaluation Trials. Location: Esperance District - 77ES27 - R.L. Stead, Dalgup; 77ES28 - E.L.D., …


Evaluation Of Herbicides For Suppression Of Rhizome Growth From Johnsongrass (Sorghum Halepense L.) In Corn And Soybeans, John Oakes Jan 1977

Evaluation Of Herbicides For Suppression Of Rhizome Growth From Johnsongrass (Sorghum Halepense L.) In Corn And Soybeans, John Oakes

Masters Theses & Specialist Projects

Johnsongrass (Sorghum halepense L.) presents a serious problem in the production of corn and soybeans in Kentucky.

Various rates of the thiocarbamates, dinitroanilines, carbamates, amides, ureas, and triazines were used in association with the crops corn (Zea mays L.) and soybeans (Glycine max L.) to determine the degree of suppression on rhizomatous johnsongrass infesting the previously named crops.

Suppression was determined by selecting areas within each treated plot, counting the number of culms, then harvesting johnsongrass rhizomes. Dry weights of rhizomes were then determined as a measure of rhizome suppression.

Results show that of …


Miscellaneous Crop Trials - High Rainfall Districts, M. W. Perry Jan 1977

Miscellaneous Crop Trials - High Rainfall Districts, M. W. Perry

Experimental Summaries - Plant Research

1. High Rainfall Miscellaneous Crop Trials - 77BU3, 77BU11, 77DE2. 77HA1, 77HA6, 77MA2, 2. Standard Alternative Crop Trials - 77BA16, 77MT20, 77NA27, 77NA28. 3. L. cosentinii Establishment and Regeneration - 77MO20, 77GE31, 77TS22. Plant density x time of planting on L. Consentinii - 77BA15. 4. L. consentinii seeding rates - 77BR11. 5. Seeding Rates for High Rainfall Cereals - 77BR11.


Rye Grass Control, J Holmes Jan 1977

Rye Grass Control, J Holmes

Experimental Summaries - Plant Research

Rye grass control: Time of spraying two chemicals. Location: Katanning property, Mr Schaffer. Time of Spraying Hoegrass - 77LG28. Location: Newdegate Research Station. Annual rye grass control. Time of Spraying Two Herbicides - 77Mo32. Location: T. Reynolds, North Miling. Rates and Time of Spraying Hoegrass - 77Na50. Location: J. Lynch, Hyden. Time of Spraying Two Herbicides - 77Es35. Location: R. Kirby, Salmon Gums. Efficiency of Ryegrass Herbicides - 77WZ1. Location: Newdegate Research Station. Aerial spraying trial - ryegrass control - 77No44. Location at property of M. Lourdes, Minivale. Aerial spraying ryegrass - 77Na60. Location: B. Ballard, Noman Lake. Ryegrass control …


Lupin Cultivar Comparison, G H. Walton Jan 1977

Lupin Cultivar Comparison, G H. Walton

Experimental Summaries - Plant Research

1. Lupin cultivar comparison - L. cosentinii cv. CB49 and L. angustifo1ius cv Marri - 77A20. - L. albus cv Ultra and L. angustifolius cultivars, BRAMLEY R.S. - 77B1(A), 77B1(B). 2. Field pea cultivar comparison - AVONDALE R.S. - 77A22. 3. Lupin and cereal mixtures - 77MO19, 4. Undersowing of subclover pasture - 77NA25. Plant competition in mixtures of lupin and cereal (Lancelin) - 77MO19. Undersowing lupin and wheat crops with sub. clover (Cuballing) - 77NA25. Polycultures of wheat and lupin (Crossman) - 77NA26, 77MO18. Expt no: 76JE7, 77A20, 77A21, 77A22, 77B1(A), 77B1(B), 77GE30, 77MO17, 77MO18, 77MO19, 77NA25, 77NA26, 77TS21.


Fallow Re-Assessment (Merredin Research Station), D Tennant Jan 1977

Fallow Re-Assessment (Merredin Research Station), D Tennant

Experimental Summaries - Plant Research

Fallow Re-assessment - (Merredin Research Station) - 72M29. Table 1: Growing season rainfall and yields at Merredin.


Septoria Diseases Of Wheat, A. G. P. Brown Jan 1977

Septoria Diseases Of Wheat, A. G. P. Brown

Experimental Summaries - Plant Research

The Effect of Septoria nodorum on Yield of 125 Wheat Cultivars. The aim of this experiment was as described for that of 1976. There were some modifications to the treatments which were as follows: (a) Most of the cultivars were 'new' and (b) Three levels of Septoria attack were set up:- 1. Low: cover sprayed throughout the season with the fungicide Difolatan. 2. Moderate: inoculated with Septoria three times, followed at heading out by cover spraying with Difolatan. 3. Severe: inoculated four times no fungicide. The 125 entries were sown as hill plots with the three Septoria environments as main …