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Articles 13861 - 13890 of 13994
Full-Text Articles in Physical Sciences and Mathematics
Wheatbelt Trace Element Nutrition 1969, J W. Gartrell
Wheatbelt Trace Element Nutrition 1969, J W. Gartrell
Experimental Summaries - Plant Research
1. Rates of Copper and Zinc on Wheat. 2. Rates and Sources of Zinc on Wheat: 3..Zinc Spray Treatments on Wheat.
Nitrogenous Fertilisers For Cereal Grain Crops Results From 1969 Trials With Wheat, Oats, Barley And Linseed, M G. Mason
Nitrogenous Fertilisers For Cereal Grain Crops Results From 1969 Trials With Wheat, Oats, Barley And Linseed, M G. Mason
Experimental Summaries - Plant Research
69ME3, 66ES8, 66ES8, 69GE1, 69GE4, 69GE2, 61M11, 69M1, 69M2, 69ME7, 69TS3,69TS4, 69M3, 68SG4, 69ME2,69ME4, 68JL1, 68JL7, 68JL4, 68JL10, 68JL6, 68JL12, 69GE3, 69BA1, 69BA2, 69BA3, 69TS2, 69NO3, 69ES3, 69NA3, 67LG18, 69LG2, 69C1, 69C2, 67N3, 69N2, 69NO4, 68TS7, 61WH2, 62WH1, 69WH2, 69WH3, 69MO4, 69WH4, 69N1, 69NO2, 61A2, 69A1, 67ES1, 69ES4, 69BR1, 67ES2, 67ES2, 69E1, 69E2, 69AL1, 69MO2, 69MT1, 69MO3, 69NA2, 69NA4,
Nitrogen Use On First Crops After Legume Pasture, M G. Mason
Nitrogen Use On First Crops After Legume Pasture, M G. Mason
Experimental Summaries - Plant Research
Apart from the normal factors affecting response of cereals to nitrogen fertilizers, i.e. length of growing season, rainfall, soil type etc, there are other factors which affect the response after a legume pasture. these factors include length of the previous legume phase and how good was the stand of legumes. Unfortunately for most of the trials in the past, involving the use of nitrogen on first crops after legumes, this information is not available.
Legumes Or Artificial Nitrogen?, N J. Halse
Legumes Or Artificial Nitrogen?, N J. Halse
Journal of the Department of Agriculture, Western Australia, Series 4
Choosing between legumes and artificial nitrogen is not the problem which many farmers are making it.
This article deals with the choice in the mixed cereal and sheep farms of the Western Australian wheatbelt.
List Of Experiment Programmes 1969 -1970, Department Of Agriculture And Food, Western Australia
List Of Experiment Programmes 1969 -1970, Department Of Agriculture And Food, Western Australia
Experimental Summaries - Plant Research
T. Albertsen, maintenance phosphorus and sulphur, continuous cropping with NPS, sulphur status in high rainfall areas. J. Cripps, (jointly with B Luren), experiments at Stoneville research station and on growers’ properties. A.C. Devitt, replacement of legume pasture, evaluation of Midland b, competitive ability of some sub clovers. Evaluation of Dinninup 3. Evaluation of Tornafield medic 1967. Evaluation of some medics 1968. Evaluation of Northam A crossbreds. Effect of phosphate on growth of medics 1968. Effect of Urea on growth of subclover on new land. Effect of Urea on established legume pastures. Pasture species establishment and persistence. Evaluation of pasture species …
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist
EDITORIAL: Restoring Beauty to the Human Environment ▪ Paul B. Kannowski
A REQUIEM FOR THE PRAIRIE ▪ Hugh H. Iltis
BIRDING IN MY BACK YARD ▪ Mrs. George A. Anderson
OCCURRENCE OF THE CECROPIA AND ROCKY MOUNTAIN SILK MOTHS IN SOUTHWESTERN NORTH DAKOTA ▪ James Oberfoell
Bulletin No 3609 - Land Development In The South Eastern Wheatbelt, G T. Halpin, P. Nelson
Bulletin No 3609 - Land Development In The South Eastern Wheatbelt, G T. Halpin, P. Nelson
Bulletins - 3000 - 3999
Interest in the development of light lands in the south-eastern wheatbelt was spurred by the many ex-servicemen seeking farms after the 1939-45 World War.
Previous attempts to develop this area had been frustrated by poor crop yields, and by the poor carrying capacity of those volunteer pastures which developed on cleared land.
Research into reasons for the poor crop results was begun in 1948-49 with trials sown by Messrs Smith and Halpin between Borden and Lake Grace. The results clearly showed the important role played by copper and zinc in successful crop growth. Since then, field trials have been conducted …
The Prairie Naturalist Volume 1, No. 3. September, 1969
The Prairie Naturalist Volume 1, No. 3. September, 1969
The Prairie Naturalist
EDITORIAL: A VOICE FOR CONSERVATION ▪ Paul B. Kannowski
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1968 ▪ Robert N. Randall
SOME ENVIRONMENTAL MANAGEMENT PROBLEMS AND PROPOSED SOLUTIONS ▪ Laurence R. Jahn
SOME PLANTS OF WESTERN MINNESOTA ▪ O. A. Stevens
MORTALITY OF MIGRATORY BIRDS AT GRAND FORKS, NORTH DAKOTA FOLLOWING A MOSQUITO CONTROL OPERATION IN MAY, 1969 ▪ Robert W. Seabloom, Lewis W. Oring and James R. Reilly
NESTING OF THE UPLAND PLOVER ON THE MISSOURI COTEAU ▪ K. F. Higgins, H. F. Duebbert and R. B. Oetting
NOTE
Albino sparrows discovered at Hazen, North Dakota ▪ Larry L. Kruckenberg and …
The Prairie Naturalist Volume 1, No. 2. May, 1969
The Prairie Naturalist Volume 1, No. 2. May, 1969
The Prairie Naturalist
EDITORIAL: North Dakota's Naturalist-at-Large ▪ Paul B. Kannowski
WETLAND VEGETATION OF THE TURTLE MOUNTAINS, NORTH DAKOTA ▪ Robert L. Burgess and Dennis T. Disrud
RAPID METHOD OF FILTRATION OF MARSH WATERS ▪ V. A. Adomaitis and J. A. Shoesmith
NOTES
Additional distribution records of the false map turtle and the short-horned lizard in North Dakota ▪ Dennis J. Gemmell
Summer record of the snowy owl in North Dakota ▪ Donald R. Johnson
Long-billed curlews in LaMoure County, North Dakota ▪ Gary L. Krapu
Isolation And Partial Characterization Of The Toxic Substance From Eremocarpus Setigerus Benth, Shuliang Lee
Isolation And Partial Characterization Of The Toxic Substance From Eremocarpus Setigerus Benth, Shuliang Lee
Loma Linda University Electronic Theses, Dissertations & Projects
The work on the active substance of Eremocarpus setigerus Benth has been previously performed by Naito and Noller. However, the investigation was not complete. Therefore we isolated and tested this substance by steam distillation and thin layer chromatography technique. A yellow sticky toxic substance was isolated with Rf values of 0.15 in benzene system and 0.57 in benzene-absolute ethanol (95:5 v/v) system.
The toxic substance which is free of halogen, nitrogen, and sulfur, is soluble in ethyl ether, ethanol, and concentrated sulfuric acid. It has a maximum absorption in the ultraviolet region that indicates the presence of unsaturation. Its infrared …
The Prairie Naturalist Volume 1. No.1. March 1968
The Prairie Naturalist Volume 1. No.1. March 1968
The Prairie Naturalist
EDITORIAL: Another Milestone ▪ John T. Lokemoen
NESTING OF THE COMMON SNIPE IN NORTH DAKOTA ▪ Robert E. Stewart and Harold A. Kantrud
SCIENCE WRITING — A PROBLEM ▪ Soren O. Kolstoe
INSECTICIDES: A DOUBLE-EDGED SWORD ▪ Richard D. Urban
NOTES
Why I like the Badlands ▪ Wayne Hecker
White-faced ibis in McIntosh County, North Dakota ▪ Harold F. Duebbert
Cinnamon teal observations in North Dakota ▪ A. T. Klett and John T. Lokemoen
Trumpeter swan in Kidder County, North Dakota ▪ Lewis M. Cowardin and James C. Bartonek
Specimen records of greater scaup ▪ Charles W. Dane and Harold …
The Certified Strains Of Subterranean Clover : Their Origin, Potential Use And Identification, B J. Quinlivan, C. M. Francis, M. L. Poole
The Certified Strains Of Subterranean Clover : Their Origin, Potential Use And Identification, B J. Quinlivan, C. M. Francis, M. L. Poole
Journal of the Department of Agriculture, Western Australia, Series 4
SUBTERRANEAN CLOVER originated in the countries surrounding the Mediterranean Sea and in parts of Western Europe.
Therefore it is not surprising that it grows well in the agricultural districts of Western Australia, for these regions have a typically Mediterranean climate with cool wet winters and hot dry summers.
West Midlands Development : Cereals For The West Midlands, Department Of Agriculture, Western Australia
West Midlands Development : Cereals For The West Midlands, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
THE sandplain soils and climate of the West Midlands area are primarily suited to grazing.
However, the place of cereals is receiving a great deal of attention in view of their advantages in the early stages of development, and the need for the diversification of farm production.
West Midlands Development : Pastures For Sandplain Soils, Department Of Agriculture, Western Australia
West Midlands Development : Pastures For Sandplain Soils, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
TRIALS at the Badgingarra Research Station have indicated that many pasture species will grow in the West Midlands area.
Choice of the species most suited to any particular locality will be influenced by soil type, rainfall, grazing characteristics and possible ill-effects on stock.
The following species have been recommended.
The Phosphorus Fertilisers : How They Compare, Walter Jacob Cox
The Phosphorus Fertilisers : How They Compare, Walter Jacob Cox
Journal of the Department of Agriculture, Western Australia, Series 4
ALTHOUGH 'double' or 'concentrated' superphosphate was first commercially manufactured in 1872 it was not until the 1950's that it became a major commercial fertiliser. In 1965 it accounted for about 15 per cent, of the world production of phosphatic fertilisers.
Wheat In Development Programmes For New Esperance Farmers, R J. Doyle, G. D. Oliver
Wheat In Development Programmes For New Esperance Farmers, R J. Doyle, G. D. Oliver
Journal of the Department of Agriculture, Western Australia, Series 4
IN the December, 1967, issue of the Journal of Agriculture, we reported on five development budgets for the Esperance region.
The aim of the exercise was to find out if a new settler concentrating on sheep, with $20,000 available for development after acquisition of land, could make a reasonable living for himself and his family while developing his farm.
N-P Compound Fertilisers, M G. Mason, W. J. Cox, R. N. Glencross
N-P Compound Fertilisers, M G. Mason, W. J. Cox, R. N. Glencross
Journal of the Department of Agriculture, Western Australia, Series 4
FARMERS were able to buy the two compound fertilisers N-P Compound Fertiliser 28:14 and N-P Compound Fertilser 24:24 in the 1967 season.
West Midlands Development : Development Techniques, Department Of Agriculture, Western Australia
West Midlands Development : Development Techniques, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Most clearing in the West Midlands is carried out by chaining, though the method chosen will depend on the country being cleared and on the resources of the farmer.
West Midlands Development : Fertilizers For The West Midlands, Department Of Agriculture, Western Australia
West Midlands Development : Fertilizers For The West Midlands, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
FARMING the light lands of the West Midland area would be impossible without fertilisers.
Most light land areas are inherently very low in phosphate and also require nitrogen.
The nitrogen can come from fertiliser for cereal crops, or can be built up by growing appropriate legume pasture plants such as clovers and lupins.
West Midlands Development : The Interpretation Of Lands Department Soil Maps Of The West Midlands Area, T C. Stoneman
West Midlands Development : The Interpretation Of Lands Department Soil Maps Of The West Midlands Area, T C. Stoneman
Journal of the Department of Agriculture, Western Australia, Series 4
Before most Crown land in the West Midlands area was released, Lands Department survey parties examined and mapped the soils using a soil classification system based on technical advice from the Department of Agriculture.
Bulletin No 3547 - Kimberley Research Station - Progress Report 1968, Western Australian Department Of Agriculture
Bulletin No 3547 - Kimberley Research Station - Progress Report 1968, Western Australian Department Of Agriculture
Bulletins - 3000 - 3999
Rivers flowing to the Gulf of Carpentaria and the Timor Sea have been estimated by hydrologists to carry about three times the water transported annually over the Murray drainage system and the South Eastern slopes which, together, comprise the highly settled agricultural areas of South Eastern Australia.
In 1945, the North Australian Development Committee recommended research in the Ord-Victoria rivers region as a first step toward ultimate agricultural development of this Northern potential and, in 1946, the Kim- berley Research Station commenced operations under the joint control of the Commonwealth Scientific and Industrial Research Organization and the Western Australian Department …
Water Blooms, T E H Aplin
Water Blooms, T E H Aplin
Journal of the Department of Agriculture, Western Australia, Series 4
WHEN a body of water becomes discoloured with a super-abundance of free-floating, microscopic plant or, in rare cases, animal life, it is said to develop a "water bloom."
This article discusses some aspects of the appearance of water blooms, particularly those caused by algae, and with the effects that certain toxic algae have on livestock.
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Land grading in the South West Irrigation Areas with modern earth moving equipment first commenced in 1949.
The advantages of land grading are well recognised by farmers and this season grading operations were carried out on 208 farms.
The Hamel Nursery, K S. Cole
The Hamel Nursery, K S. Cole
Journal of the Department of Agriculture, Western Australia, Series 4
A LITTLE known, but highly productive use of irrigation water occurs at the Forestry Department Nursery, Hamel.
Seedlings of trees and shrubs are raised during the summer for sale the following winter.
Sales are made to the farming community and many trees are used by the Forest Department in its reafforestation programmes.
Phalaris Staggers : Prevention By Cobalt Bullets, Bryan J. Gorddard, P. P. Mann, A. J. Hadlow
Phalaris Staggers : Prevention By Cobalt Bullets, Bryan J. Gorddard, P. P. Mann, A. J. Hadlow
Journal of the Department of Agriculture, Western Australia, Series 4
FARMERS in the south west of Western Australia are familiar with the use of cobalt for the prevention of ill-thrift and deaths due to cobalt deficiency in sheep and cattle.
Less common is the use of cobalt for the prevention of chronic phalaris poisoning, known as phalaris staggers.
This condition is well known in eastern Australia, but only isolated cases have been recorded in W.A. no doubt due to the relatively small area sown to phalaris in this state.
Recommendations For The Establishment Of Harbinger Medic In The Northern Wheatbelt, R J. Parkin
Recommendations For The Establishment Of Harbinger Medic In The Northern Wheatbelt, R J. Parkin
Journal of the Department of Agriculture, Western Australia, Series 4
Harbinger is an early-maturing medic that has met with success on some soil types, especially in the northern wheatbelt.
Similar to Cyprus barrel medic but best suited to different soil types, harbinger adds to the range of pasture legumes available for sowing in under 16 in. annual rainfall areas.
The Australian Field Cricket, J A. Button
The Australian Field Cricket, J A. Button
Journal of the Department of Agriculture, Western Australia, Series 4
THE Australian field cricket, or the black field cricket as it is sometimes known, is a native of Australia and is widely distributed throughout the south western, south and south eastern sections of the continent.
Isolation Of A Toxic Substance From Centaurea Repens, Merton E. Sprengel
Isolation Of A Toxic Substance From Centaurea Repens, Merton E. Sprengel
Loma Linda University Electronic Theses, Dissertations & Projects
A poisonous steroid-type compound was isolated from Centaurea repens. After extraction with absolute ethanol, removal of the solvent, addition of 2% HCl to precipitate the pigments, and filtering, the pH was adjusted to 9 with aqueous anunonia. This solution was exhaustively extracted with chloroform, evaporated to dryness, and extracted with ethyl ether.
This fraction was chromatographed on silica-gel plates, using 10:1 1,2-dichloroethane-methanol as the developer. The band at Rf 4.2 was removed and found toxic to mice. Labored, slow, gasping respiration and frequent involuntary muscular contractions became apparent within a few minutes following the intraperitoneal injection into each animal. Death …
Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton
Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton
Journal of the Department of Agriculture, Western Australia, Series 4
High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.
WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.
Cultivation : Does Haste Mean Waste?, H M. Fisher
Cultivation : Does Haste Mean Waste?, H M. Fisher
Journal of the Department of Agriculture, Western Australia, Series 4
Many farmers believe that increasing the speed of cultivation and seeding implements will cause deterioration of soils and reduced crop yields.
In a three-year trial on clover ley land at Wongan Hills higher cultivation speeds tended to increase rather than decrease wheat yields. There was some deterioration in the physical structure of the soil.