Physical Sciences and Mathematics Commons^™

Preliminary Estimate Of The Underflow Across The South Dakota-Nebraska State Line In The Niobrara River And Ponca Creek Drainage Basins, E. C. Reed, C. F. Keech

Conservation and Survey Division: Faculty and Staff Publications

The purpose of this paper is to estimate the amount of ground water flowing across the South Dakota-Nebraska State line within the Niobrara River basin, including the Ponca Creek basin. The study was made at the request of the Niobrara River Compact Commission. The estimates fiven in the paper are preliminary and subject to revision.

Relationship Of Bicarbonate Concentration Of Plant Tissue To That Of The Growth Media As A Factor In Chlorosis, Gary H. Carlsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Throughout the years lime-induced chlorosis has contributed to untold economic losses. Although this disease has challenged the technical ingenuity of outstanding plant and soil scientists, the exact cause has never been determined; consequently, no preventative measures or permanent cures can, as yet, be recommended. This physiological malady, unchecked, continues its rampage in regions where the disease is prevalent.

The problem is of wide significance because calcareous soils are distributed throughout the world. It is of primary concern to us because the majority of the land of western United States is of this type. An estimated 500,000 acres of crops growing …

Log Of Test Holes Frenchman Creek Basin Nebraska, C. F. Creech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Northeastern Cherry And Western Keya Paha County Preliminary Ground Water Study 1957 (Gm-26): Reed, E.C. Conservation And Survey Division , Size 8.5" X 11"., E.C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Influence Of Various Factors On Aggregation Of Peorian Loess By Microorganisms, T. M. Mccalla, Francis A. Haskins, E. F. Frolik

Department of Agronomy and Horticulture: Faculty Publications

Soil structure is important in the attainment of adequate aeration for the aerobic microorganisms whose activities maintain such higher plant nutrients as sulfur, phosphorus, and nitrogen in a highly oxidized and thus readily available state. Good soil structure is also necessary for soil and water conservation, Under Nebraska conditions microorganisms and their decomposition products constitute a major source of soil-aggregating agents. The decomposition of crop residues and plant roots is important in the nutrition of these aggregating microorganisms. Other microorganisms, however, also utilize crop residues and plant roots, and they may decompose the aggregating agents as well, so that the …

Granular Fertiliser, C R. Hale

Experimental Summaries - Plant Research

There is general agreement that granulation of fertilisers improves their physical characteristics with respect to handling, storage and distribution in the field. These physical advantages rather tan any established agronomic reason appear to be responsible for the increasing use of granular fertiliser.

Exhaustive Extractions Of A Minnesota Peat, Moses Passer

Journal of the Minnesota Academy of Science

No abstract provided.

The Thermodynamics And Some Practical Aspects Of Zinc Adsorption On Calcite, Dolomite, And Calcian-Magnesite Minerals, Jerome J. Jurinak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Zinc is one of the essential elements required for the normal growth of plants. The total amount of zinc commonly occurring in soils is usually many times greater than that necessary to supply the needs of actively growing plants. The ability of the soil to "fix" zinc in form unavailable for plant use, however, has made the zinc deficiency disease an important plant nutrition problem in the major fruit and nut growing regions of the West. Fixation mechanisms which have been postulated as contributing to zinc deficiency include organic complexes, precipitation of insoluble inorganic salts, and strong zinc-clay intersections. It …

Growth And Nutrition Of Plants As Affected By Different Osmotic Concentrations Of Calcium Chloride And Sodium Chloride In The Substrate, Mumtaz Ali Khan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Considerable experimental evidence supports the concept that the growth of plants generally decreases progressively as the salt concentration of the substrate increases, but certain relationships between plant and substrate are still not fully understood. The chemistry of salt toxicity to plants involves many interactions both as to the quantity and kind of ions presented to the roots and those accumulated in the plants. Many plant species have shown sensitivity to excess accumulation of specific salts frequently encountered in saline soils. Thus Eaton (1942), Wadleigh, Hayward, and Ayers (1951) have shown most of the fruit trees to be susceptible to injury …

Annual Installation Of Irrigation Wells In Nebraska Through 1985, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Relation Of Nebraska Water-Level Measurements Made In 1955 To Median Water-Level Position, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Influence Of Soil Moisture Conditions On The Absorption Of Phosphorus By Plants From Calcareous Soils, T. J. Denman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Phosphorus is one of the major plant nutrients secured from the soil. The object of many investigations has been to discover the nature of the processes by which the soil supplies phosphorus to plants, and to determine the influence of soil factors upon these processes. Although much knowledge has been gained, these processes and the effects of soil factors upon them are still not clearly defined.

One factor which profoundly affects plant growth is the amount and relative availability of soil moisture. The results of some investigations have suggested that this factor may also have considerable influence on the absorption …

Ion Exchange Capacities Of Soils, Jeanne Ellis

Student Scholarship

This study investigates the chemical and physical properties of various soil types in St. Charles County, Missouri, with a primary focus on their cation exchange capacities. The author examines how plants obtain essential nutrients through an exchange process where root hairs release hydrogen ions in trade for metallic cations like calcium, magnesium, and potassium held on the surface of clay and humus colloids. To provide a comprehensive assessment of soil productivity, the research utilizes a photoelectric colorimeter to measure seven key components: organic matter, extractable phosphorus, pH, and exchangeable hydrogen, potassium, magnesium, and calcium. 

The experimental phase involved analyzing samples …

The Effect Of The Bicarbonate Ion On The Respiration Of Excised Roots, Gene W. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For many years man has been searching for a cure for lime-induced chlorosis. This disease is prevalent throughout the entire western United States and is characterized by a yellowing of the leaves, destruction of the chlorophyll, and eventual death of the plant. It has brought devastation of fruit orchards in Utah, costing fruit producers millions of dollars. Hardly any county in Utah is free from this destructive nutritional disease.

Growth And Nutrition Of Plants As Affected By Various Levels Of Exchangeable Sodium, Mohammad B. Choudhri

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In saline soils, which are characterized by an appreciable quantity of neutral soluble salts, plant growth is adversely affected due to the increase in osmotic pressure and the consequent decrease in the physiological availability of water. In addition, growth may also be restricted through the accumulation of toxic quantities of various ions within the plant.

On the other hand, alkali soils, whether saline or non-saline, are characterized by a high content of exchangeable sodium in the cation-exchange complex. One reason of low productivity on these soils is the unfavorable physical conditions induced by the dispersing action of the sodium ions. …

Soil Additives And Their Effect On The Yield Of Various Crops And The Physical Properties Of An Agricultural Soil, Gaylen L. Ashcroft

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It is generally accepted that soil structure is very important in keeping productivity at a high level. When soils are loose and friable, mechanical impedance to root growth and seedling emergence is greatly reduced. Such soils infiltrate greater quantities of precipitation, are better aerated, and possess a more favorable temperature than puddled soils. Essential plant nutrients are also more easily available in well aggregated soil.

In the last few years, several synthetic soil additives have been placed on the market. Extravagant claims have been made about the ability of these amendments to maintain soil structure, without a sound body of …

Occurrence Of Great Soil Groups In Nebraska, J. A. Elder

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Economic Analysis Of Forage Production And Utilization In Dakota And Dixon Counties, Nebraska, Howard W. Ottoson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Soil erosion remains a serious problem on many Nebraska farms despite programs of financial assistance, technical aid, and education by several national and state agencies. One reason that soil conserving adjustments in land use have not been made by farmers is that considerable uncertainty surrounds the economics of soil erosion control on the farm level. This study is an attempt to increase knowledge and reduce some of the uncertainty with regard to the economics of erosion control in a specific area.

Heavy Rains Show Need For Soil Conservation Practices, G H. Burvill

Journal of the Department of Agriculture, Western Australia, Series 3

Autumn 1953 will stand out in the weather records for the widespread heavy rains in the pastoral areas and wheatbelt. The rains which came from the cyclonic storms of March 22-25, totalled five to 12 inches in many pastoral areas and two to seven inches in the Northern and Eastern Wheatbelt. The steady rain soaked the land, but where the falls were heaviest, runoff to lower parts caused flooding and local inconvenience. All in all, it was a very welcome rain, especially where the previous winter had been dry. In the wheatbelt, ploughing and cultivation were soon in full swing …

Effect Of Bicarbonate Ion And Root Aeration On Lime-Induced Chlorosis, Willard L. Lindsay

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Chlorosis in plants has been recognized as a devastating disease for over one-hundred and fifty years. It is easily recognized by a yellowing of the plant foilage and is associated with a reduced chlorophyll synthesis.

Chlorosis is found so frequently on calcareous soils that its cause is attributed at least in part to this soil factor. It is therefore referred to as lime-induced chlorosis. This type of chlorosis has become a serious problem, especially in many of the fruit-growing regions of Europe and the Western United States where the soils are calcareous. In Utah the disease is more destructive than …

The Soil Our Basic Asset, J E. Watson

Journal of the Department of Agriculture, Western Australia, Series 3

Contour furrows increase pasture growth

Good pastures on steep slopes will give profitable returns from grazing, and will also reduce erosion risks. Water needed for pasture growth on such slopes must not be allowed to run off and erode lower slopes. The use of contour furrows is a readily applied erosion control measure which can be very effective in increasing the amount of water held and absorbed on steep slopes.

Commercial Fertilizers For Winter Wheat In Relation To The Properties Of Nebraska Soils, R. A. Olson, H. F. Rhoades

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is the purpose of this bulletin to report the investigations that have been made correlating soil properties and fertilization practices with yields of winter wheat. Since the success or failure of fertilization practices is so dependent on specific soil conditions, an attempt has been made here to further characterize the major soils of the different sections of the state which are devoted to wheat production and to analyze fertilizer practices and results in relation to the soil properties determined. The data are summarized for the four sections of the state designated as southeastern, east-south-central, west-south-central and western Nebraska. These …

Log Of Test Holes Deuel And Garden Counties Nebraska, C. F. Keech, R. L. Schreurs

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Industrial Nebraska In Outline (Revised), G. E. Condra

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Ionic Exchange In Soils: I. Measurement Of The Exchange Reaction By Means Of An Ion Exchange, D. A. Brown

Journal of the Arkansas Academy of Science

No abstract provided.

Wind Erosion Control—I, D J. Fleay

Journal of the Department of Agriculture, Western Australia, Series 3

Desserts have been formed in some parts of the world by the action of wind on once productive soils. This could happen to the light land areas of Western Australia if we do not profit by the lessons of the past and manage these soils with great care.

The Regeneration And Maintenance Of Wimmera Ryegrass Pastures Under Saline Soil Condition, F L. Shier

Journal of the Department of Agriculture, Western Australia, Series 3

Over the past ten years, Wimmera ryegrass pastures at the Salmon Gums Re- VJ search Station have been improved and maintained by periodic cultivation of the soil even without applications of superphosphate. On heavy crab-holey soil affected by high salt content and unsatisfactory for wheat growing, cultivation treatments have produced remarkably uniform stands of Wimmera ryegrass as shown in the accompanying pictures. The bare patches due to salt, have been largely eliminated. If the interval between cultivations is more than three years Wimmera pastures deteriorate badly.

Soil Conservation Service - Basis Of Co-Operation, G H. Burvill

Journal of the Department of Agriculture, Western Australia, Series 3

The Soil Conservation Service has been established as provided in the Soil Conservation Act, 1945. To carry out its objectives will require the co-operation with it of individual farmers and landholders. The policy of the Service is therefore to encourage farmers to help themselves, and particularly to encourage them to recognise the need for soil conservation methods and for soil erosion control in the early stages. More particularly, the Service aims to provide, through its trained staff, technical asistance in the way of agricultural advice, research, conservation, planning, layouts and surveys. As indicated below, under the heading "Charges for Soil …

Departmental Functions Of The Conservation And Survey Division, G. E. Condra, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Origin And Scope Of The Conservation Program, G. E. Condra

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.