Physical Sciences and Mathematics Commons^™

Fossils And Farmers, D Merrilees

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

The West Australian Museum is looking for fossil remains from the Pleistocene age, the period of geological time when Europe was covered with ice.

Little is known of what the Australian continent was like at that time, and the Museum hopes, by collecting as many fossil remains as possible, to get a better picture of Australian conditions at that time.

It is also hoped to discover more about the ancestors of our present marsupial fauna.

Farmers may be able to make a valuable contribution to the present knowledge of this period by forwarding suspected fossil remains to the Museum. Here …

Palatability Of Forage Plants In North-West Sheep Pastures, R H. Collett

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

A DECLINE in carrying capacity has occurred in large areas of the Pilbara district of the North-West, due to the decrease in palatable plants and the increase in unpalatable ones.

The relative palatability of the various species to sheep is therefore a matter of considerable importance to pastoralists.

Soil Salinity In Western Australia, Stanley Thomas Smith

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

The background to Western Australia's soil salinity problems, and a description of the main types of salt-affected land, by Senior Soil Research Officer, S. T. Smith, B.Sc. (Agric.)

Sacramento-Wilcox Game Management Area: General Information And Regulations

Nebraska Game and Parks Commission: Publications

The Sacramento-Wilcox Game Management Area was acquired by the Game Commission in 1948 with funds apportioned to the state through the federal excise tax on firearms and ammunition.

The Area serves primarily as a waterfowl refuge, and public hunting area. A game farm, which holds pheasant stock through the winter months is also located on the property.

This state special use area encompasses 2,313 acres of game-rich land with approximately 40 percent of the acreage consisting of lake or lagoon. The remainder is in diversified cropland. The topography is typical of the rainwater-basin country - miles of relatively flat tableland …

Establishing Saltland Pastures, C V. Malcolm

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

WITH the approach of winter, thoughts are turning to the seeding season. It will therefore be appropriate to discuss methods of establishing saltland pastures.

This discussion will be restricted to "bluebush," creeping saltbush, and old man saltbush. Seed of these plants is available from local stock firms.

Manage Your Rainfall For Maximum Production, J E. Watson

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

TTOW much would an extra inch of rainfall be worth to you? Much sloping land loses this much and more by run-off every year.

The soil is the main asset of your farm, but your profits depend on how you manage the rain which falls on it.

Healthy Pastures, F E. Ryan

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

IN sweeping away forests to make room for pastures we have taken on the responsibility of maintaining these areas in a condition suitable for the growth of pasture plants.

This is done by a choice of suitable species, fertilising, cultivating, drainage, control of grazing and by weed and insect control.

Salty Seepages Can Be Productive, C V. Malcolm

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

MUCH has been said and written concerning the use of Paspalum vaginatum for growing on seepage areas, but the general production to be expected from seepage areas has not received much attention.

The fact is that properly handled, seepage areas can be quite productive, and can be valuable for summer grazing.

Some Life History And Ecological Activites Of The Richardson Ground Squirrel In South Dakota, Dean Robert Gunderson

Electronic Theses and Dissertations

Whenever man has gone he has changed his environment to suit his needs. Because of his need for food, man has plowed up the prairies and converted the grasslands to grain fields. Before white man settled the Great Plains, range rodents such as the prairie dog and the ground squirrel existed undisturbed and unmolested except by their natural predators. With the advent of cultivated crops, the range herbivores found a new and tasty source of food. Among these primary consumers which took advantage of man’s interference with the natural prairie was the Richardson ground squirrel, Citellus richardsoni (Figure 1). During …

Model Analysis Of Spillway And Stilling Basin Of Porcupine Dam, Gordon H. Flammer, C. Earl Israelsen

Reports

Introduction: The Engineering Experiment Station at Utah State University was engaged by the Utah Water and Power Board to make a model analysis of the spillway and stilling basin of the Porcupine Dam. This dam will be located on the East Fork of Litle Bear River, just east of Avon, Utah. It will be approximately 650 feet long and 160 feet high, composed of zones earth fill with rock rip-rap facing. The spillway will have a reinforced concrete inlet section and the remainder of the chute and stilling basin will be excavated out of the rock and leck unlined. The …

Thirsty Cows Are Poor Milkers, S R. Dunstan

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

THE HOT summer weather is not far away, and now is a good time for the whole milk producer to attend to those points which will ensure that milk production is maintained at a high level during this period.

Distribution Of Ammonia Nitrogen In The Lower York River, Virginia : Spring, 1961, Bernard C. Patten, Virginia Fisheries Laboratory, Virginia Institute Of Marine Science

Reports

No abstract provided.

A Rational Approach To The Estimation Of Evaporation And Evapotranspiration From Climatological Data, Jerald Emmet Christiansen, B. B. Patil

Reports

Many attempts have been made to derive mathematical expressions relating evaporation and evapotranspiration, or consumptive use, to climatological data. IN the United States, the Blaney-Criddle formula is probably the best known for estimating consumptive use (2 and 3). Blaney (1) has also suggested that this formula is suitable for estimating evaporation as measured with a Weather Bureau pan. Other well known formulas are the Penman formulas (10), the Thornthwaite formula (15) and the Hargreaves formulas (8). Halkias, Beihmeyer and Hendrickson (6) suggest that water requirements of crops can be determined from atmometer data. Lowry and Johnson (() in an early …

Fallowing And Soil Conservation, J E. Watson

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

Soil Conservationists don't always disapprove of fallowing, says Soil Conservation Service adviser J. E. Watson.

They are prepared to compromise, and accept fallowing as a useful practice where it means better pasture establishment or more effective land reclamation.

Fall Food Habits Of The Merriams' Wild Turkey In Western South Dakota, Curtis Martin Twedt

Electronic Theses and Dissertations

The several varieties of wild turkey (Meleagris gallopavo) formerly ranged over much of what is now eastern, central and southwestern United States. A large portion of the species habitat was destroyed by logging and by clearing forest land for agricultural use. Wild turkey population, were also directly decimated because of bunting by early settlers. Edminister (1954) estimated present Wild turkey range to be approximately 1 per cent of the historic range. In the past few decades, wild turkey population have increased to the point where the species has begun to assume a prominent place among the game birds. . . …

Determination Of Minimum Lethal Level Of Toxaphene As A Piscicide In Lakes Of North Dakota, Dale L. Henegar

Electronic Theses and Dissertations

Toxaphene as a piscicide for localized field application has not been widely used because minimum lethal concentrations have not been in the field. There is, however, considerable information gained from laboratory bio-assay studies (Surber, 1498; Duedoreff, et al. 1953; Hooper and Grzenda, 1955, et al. 1959). Concentrations indicated by such studies are not necessarily correct for field use. Prevost (1960) pointed out that results from controlled laboratory experiments do not always yield dosages exhibiting similar results in the field where a number of variables, both known and unknown, exist over which the field worker has little or no control. Gebhards …

Lower James River Pollution Study, City Point To Chickahominy, August 6 - September 6, 1951 : A Preliminary Report Of Findings, Conclusions And Recommendations, William H. Massman, Ernest C. Ladd

Reports

Hopewell,m Virginia.is ·a highly industrialized city, the Celanese Corporation of .America, the Continental Can Company, the Hercules Powder Company and the Solvay Process: Division of· Allied Chemical and Dye Corporation having plants there. All of these plants have industrial and human wastes, the combined amount of which is great from. the standpoint of both volume and strength. In addition, there. are human wastes from the City cf Hopewell and its suburbs in Prince George County and from Camp Lee. All of those wastes, sewage and industrial are discharged into the James River, Bailey Creek and into other tributaries of the …

Special Report (1960), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Odor Report (1960), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Addition Of Sodium Nitrate (1960), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Analytical Data (1960), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Press Report (1960), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Irrigation And Drainage Problems In Uruguay, Jerald Emmet Christiansen

Reports

Synopsis: Uruguay irrigates about 65,000 acres, mostly rice (74%) and sugar cane (15%). Summer rainfall averages about 3.5 in. per month, but frequent droughts seriously affect both crops and livestock. Irrigation can be increased by storage in small reservoirs on tributary streams by means of low earth dams. Some areas will require flood control and draiange before intensive agriculture can be practiced.

The Effects Of Flouride Ion On Some Blood Constituents Of Rainbow Trout, Salmo Gairdneri, Linnaeus, Richard H. Alger

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During the past quarter of a century there has been considerable investigation into the effects of fluorides on living organisms. It has been well established, as a result of these studies, that both small and elevated amounts of fluorides present in the environment may have a marked toxic effect upon gaining entry into the organism. Much of the research involving fluorides and the living organism has been confined to experimentation with animals, although considerable evidence indicates that plants are also subject to injury if fluorides are present in the atmosphere or the soil.

The great majority of the research dealing …

Life History Notes On The Walleye, Stizostedion Vitreum Vitreum (Mitchill) In A Turbid Water, Utah Lake, Utah, Billy B. Arnold

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Early in 1952, walleye fry were stocked for the first time in Utah Lake. Subsequent plants were made in 1954, 1955 and 1956. Altogether, over two million fry have been stocked.

By January, 1958, it was felt sufficient time had elapsed for the species to establish patterns of growth, reproduction, food habits and consequent relationships to the new environment. Thus, on January 1, 1958, a Federal Aid to Fisheries project, number DJ F-4-R-5, job T, was initiated. This project was entitled "investigations of Yellow Pikeperch and Channel Catfish of Utah Lake, Utah County." Although the closing date was December 31, …

Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation

Publications (WR)

During the fall of 1959, monolayer behavior studies were made on two lakes in the southwest; Boulder Basin of Lake Mead, Nevada, and Lake Sahuaro near Phoenix, Arizona.

These studies were made to evaluate the effect of geographical and climatological conditions on movement and behavior of monolayers. The Lake Sahuaro tests also were used to provide data for design and development of improved methods of application and maintenance of a film on this lake in anticipation of full scale, evaporation-reduction tests to be performed there during the summer of I960.

The Lake Mead studies produced the following general points of …

Overcoming Stock Watering Problems In The Kimberleys, B Swan

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

ONE of the ever-present problems of the pastoral areas is that of providing: watering-points in reasonably close proximity to the grazing areas.

All too frequently, the country on the river frontages and that in the vicinity of the water-holes becomes eaten out and although there may be ample feed on other portions of the run, it is too far distant from the available water to be effectively utilised.

Wild Life In A Modern Age, Clee Francis Howard Jenkins

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

THE present human population of the earth is estimated at about 2 1/2 thousand million, and reliable sources consider that this figure will be doubled by the year 2000.

Although the pessimistic forecasts of Malthus have not yet come true, it is obvious that the world's food requirements, must lead to increased exploitation of land and other primary resources, with consequent repercussions on all forms of wild life.

Financial Management Of Large Forest Ownerships, John Fedkiw, William L. Moise, Walter H. Meyer, Meade Whitaker, Henry I. Barclay Jr., C. G. Mclaren, J. A. Segur

Yale School of the Environment Bulletin Series

No abstract provided.

The Dispersal And Acclimatization Of The Muskrat, Ondatra Zibethicus (L.), In Finland, Atso Artimo

Other Publications in Wildlife Management

The natural range of the muskrat, Ondatra zibethicus (L.), comprises the major part of the North American continent (Fig. 1). In the northern and eastern parts of its range its distribution is more or less continuous, but in the arid west it is very patchy. The species is absent from some areas which, according to Storer (1938), are suitable for it. This writer assumes (op.cit. pp. 159-160) that »Muskrats probably reached some of the now isolated waters of the West during a period when aquatic and palustrine habitats were more widespread, in late Pleistocene or postglacial times. With subsequent contraction …