Earth Sciences Commons^™

Groundwater Levels In Nebraska, 1970, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Geologic And Water-Supply Reports And Maps, Nebraska, United States Dept. Of The Interior

Conservation and Survey Division: Faculty and Staff Publications

A list of reports and maps published by the Geological Survey relating to the geology, mineral, water resources of Nebraska.

The Effect Of Alternate Wetting And Drying On The Ammonium And Nitrite Nitrogen Transformation In Soils, Virupax C. Baligar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investigations were carried out to study the effect of alternate wetting and drying cycles on the mineralization, nitrification, and denitrification of soil nitrogen in two soils, in the presence or absence of added ammonium and nitrite. Soils were analyzed at the end of each drying cycle for total inorganic nitrogen, ammonium, and nitrite nitrogen. Gaseous products, i.e., ammonia, and the oxides of nitrogen (NO and NO₂) were collected in the course of drying for determination.

The drying cycles accelerated the rate of nitrogen mineralization in both soils and further increased the oxidation of applied and available ammonium. The …

Role Of Transition Metals In Nitrite Decomposition In Soil, J. S. Bajwa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Iron and copper increased the decomposition of nitrite significantly during the first two hours of reaction when 150 parts per million (ppm) of nitrite and nitrogen was added to an acidic soil. Manganese was found to have a slight effect. There was no additional effect of the added metals after two hours reaction time.

The higher concentration of metals was not effective in catalyzing the decomposition of the added nitrite in nitrogen. All the added nitrite nitrogen was not recovered and the deficit could be due to the formation of nitrogen gas.

A Comparative Study Of Boron Adsorption By A Calcareous And An Acid Soil, Namik M. Ali Rashid

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The adsorption of boron by Aiken clay loam and Vernal sandy loam was studied in the boron equilibrium concentration range of 0 to 40 ppm. Adsorption data were obtained at 11, 20 and 30°C. The data were analyzed by the application of the Langmuir adsorption isotherm. It was concluded that, in both soils, the adsorption of boron occurred on three distinct sites or regions.

The acid ferrigenous Aiken soil had a higher adsorption capacity for boron than the calcareous Vernal soil when compared on a unit mass basis. On the unit area basis, however, the Vernal soil adsorbed more boron …

Calcium Carbonate Dissolution And Precipitation In Water: Factors Affecting The Carbonate Saturometer Method, Lyle M. Dabb

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The carbonate saturometer method developed by Weyl (1961) was studied in respect to the effect of several variables on the solubility of carbonates. The solubility of three solid carbonate materials was measured in four different salt solutions, at four ionic strengths, and at two different temperatures. The solids studied included: calcite, dolomite, and a calcareous soil.

It was found that the three solid carbonate materials varied in solubility from a low in the soil carbonates to a high in dolomite.

Increasing the ionic strength of the solution increased the solubility of most of the solid carbonate materials.

By decreasing the …

Relationship Of The Soil Water Content And Microclimate To The Plant Growth Water Use Relationship Of Several Plants, Philip Dean Sandberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies involving field plots, lysimeters, and garbage can lysimeters showed that an intermediate soil water level produced the most growth for a given amount of water use by oats, corn, and barley. For crested wheatgrass the lowest water level produced the most growth per water used. Field plots which were covered with sheet metal between the rows produced more plant growth per water used than the uncovered plots for the crops used in this study. One year's data were obtained on the effect of positioning the garbage can lysimeters. One half of the cans were placed on the soil surface …

Guidebook To The Geology Along Portions Of The Lower Platte River Valley And Weeping Water Valley Of Eastern Nebraska, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Guidebook To The Late Pliocene And Early Pleistocene Of Nebraska, T. M. Stout, H. M. Degraw, L. G. Tanner, K. O. Stanley, W. J. Wayne, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Use Of Groundwater For Irrigation In Hamilton And York Counties, Nebraska, Eugene K. Steele Jr.

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Growing Plants With Salty Water, C V. Malcolm, S. T. Smith

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

LACK of good quality water in many parts of Western Australia often forces people to use salty water for irrigation and gardening.

This article gives some hints on how to reduce salt damage to plants when salty water must be used for irrigation or gardening.

It includes a table of plants which may be irrigated with water of varying degrees of salinity and lists precautions which should be taken for each group.

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

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 …

Some Ecological Effects Of The Oil Industry On Farmland In East Central Illinois, Dale E. Fruendt

Masters Theses

Between June, 1970 and July, 1971 a two square mile area in East Central Illinois served as a study area for the effects of the oil industry on farm land. Observations were made on several farms concerning the activity of oil companies and interviews with farmers were held. Two areas of farmland were given special attention. One was a clover field where salt water had flooded a portion of the field. The other area was a corn field where oil had flooded approximately eight acres of land. Random samples of invertebrates were taken in both of these areas as well …

Micronutrients And Biological Patterns In Lake Mead, Hasan K. Qashu, Lorne G. Everett, J. S. Carlson, Bureau Of Reclamation

Publications (WR)

Progressive increases in concentration of dissolved solids in the Colorado River water from Lake Powell to Imperial Dam seem to alter plankton dynamics and biological productivity of the river. Also, changes in biological productivity and micronutrients concentrations occur within the same reservoir. Development of a digital simulation model to predict micronutrients concentrations and biological productivity is necessary for diagnosing changes in plankton population and effluent-carrying capacity of the system. The objectives of the study are: (1) to determine trace metal balance at different locations in Lake Mead, (2) to measure biological productivity and conduct plankton population counts at each sampling …

Water Conservation Handbook, D J. Carder, G. W. Spencer

Natural resources published reports

This handbook is intended as a practical guide in some of the most common aspects of water conservation in the agricultural areas of Western Australia. It deals mainly with water conserved in dams for stock and domestic purposes on the farm.

the farm. The handbook does not attempt to deal with all aspects of handling and using water for agricultural purposes. This is a vast subject which extends into many fields such as engineering, irrigation and land use.

The guide does, however, touch on some important aspects of good management of agricultural land. It should be read in conjunction with …

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

Assistant Director Retires, Department Of Agriculture, Western Australia

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

Mr. G. H. Burvill (63) retired on September 3 as Assistant Director of Agriculture after 44 years with the Department of Agriculture. He joined the Department as a cadet in 1927.

One of Western Australia's best-known agricultural scientists, Mr. Burvill has had an important influence on many aspects of the State's farming industries over more than 30 years.

He has an unequalled knowledge of the State's soils, climate and agriculture.

Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Dunes On The Plains, The Sand Hills Region Of Nebraska, C. F. Keech, R. Bentall

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Shaded Topographic Map Of Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Minimum Standards For Artificially Gravel Packed Irrigation Wells, P. E. Fischbach, P. E. Schleusener, V. H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Groundwater Level (Decline & Rise), 1971

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Shaded Topographic Map Of Nebraska, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The 1963-64 Lake Mead Survey, J. M. Lara, J. I. Sanders, Bureau Of Reclamation

Publications (WR)

The 1963-64 Lake Mead survey was run to compute the reservoir capacity. Results of the geodetic and hydrographic surveys and sediment sampling equipment are described. The geodetic survey showed Hoover Dam subsided an average of 118 mm since 1935. Sonic sounding, photogrammetry, and crosssectional profiling methods were used to run the hydrographic survey. Reservoir area and capacity tables were generated using an electronic computer. The present lake capacity is 29,755,000 acre-ft and the reservoir surface area is 162,700 acres at elevation 1229 ft. 2,720,000 acre-ft of sediments accumulated in the lake since 1935. A unit weight of 60 Ib/cu ft …

The Effect Of Chemical Competition On Thermodynamics Of Bacterial Adsorption, Deorao R. Khairnar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this investigation was to study the effect of chemical competition on thermodynamics of bacterial adsorption. This was done using an experimental system consisting of Mendon silt loam soil as the adsorbent, Staphylococcus aureus as a common adsorbate and sodium chloride (NaCl), sodium lauryl sulfate (SLS), and peptone as competitive adsorbates.

The bacterial adsorption on soil both with and without chemical competition followed Langmuir type isotherms. From the equilibrium data, thermodynamic functions such as free energy, ΔF°, enthalpy, ΔH°, and entropy, ΔS°, were calculated. Observed positive ΔH° values indicated that the bacterial uptake in both noncompetitive and competitive …

Cation Exchange And Transport In Soil Columns Undergoing Miscible Displacement, Sung-Ho Lai

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A mathematical model was developed to predict the exchange of one cation by another in a soil column undergoing one dimensional cation solution displacement under steady state flow conditions. The model allowed prediction of both the solution and exchanger phase concentration of the cation in question.

The model consists of a material balance equation which is a parabolic type partial differential equation. The assumption was made that equilibrium was reached instantaneously between the cations in the solution phase and the exchanger phase. This assumption reduced the material balance equation to a form that allowed numerical solution providing the data concerning …

Groundwater Levels In Nebraska, 1969, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Re-Exploring The Missouri, Thompson Mylan Stout

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Kinetic Approach To The Inactivation Of Zinc By Various Soil Constituents, Shingara S. Sandhu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The adsorption reaction of zinc onto prochlorite, pyroxene, and biotite minerals, from dilute solution (water) was studied under isothermal conditions by agitated nonflow experiment method. The equilibrium concentration of zinc in the solution was determined both by radioactive tracer technique and adsorption spectrophotometer methods. The data were collected at three temperatures.

The data were treated by the equation:

∂θ/∂t = k₁(1-θ)C - k_-1θ

where θ is the fraction of total surface coverage and C is the equilibrium concentration of zinc in solution, k₁ and k_-1 are the rate constants for the adsorption and reverse …