Earth Sciences Commons^™

The Effect Of Soil Adsorbents On The Thermodynamic Properties Of Soil Water System, Taghi Manbeian

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It has been generally recognized that the surface phenomena of the solid particles such as shrinking and swelling, water- holding capacity, water' movement, and cation exchange are important in understanding the physical properties of the soil. Clay is the most prevalent material in the colloidal fraction of many soils. Because of the complex nature of the surface of clays and the small size of the particles, the direct study of surface phenomena is difficult. Thermodynamic functions change in accordance with changes and organization within the system. Thus, an examination of the thermodynamics of surface phenomena provides some understanding of the …

The Influence Of Soil Moisture Regimes And Atmospheric Environments On Transpiration And The Energy Status Of Water In Plants, Sampatrao A. Gavande

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant responses to different soil moisture regimes have been extensively studied. Because of interactions between the soil, plant and climatic factors, few convincing generalizations concerning the influence of soil water on the transpiration of water by plants have been established. Generally single factors or at most the interaction of two have been studied at any one time. Useful theories describing the conditions of water retention in plant tissues and movement of water through plants have been proposed. Equally useful theories have been suggested for describing the retention and transmission of water in soil. The integration of these theories and their …

Water Levels In Observation Wells In Nebraska, 1965, Philip A. Emery, Mildred M. Malhoit

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith

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

IN Western Australia there are several ways in which salt manifests itself but the most serious and extensive of these is in the valley systems where shallow saline water tables occur.

This type of salt problem is called "valley waterlogging" and occurs in most of the flat valleys throughout the wheatbelt of W.A.

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.

Leaf Scorching, Department Of Agriculture, Western Australia

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

DURING the summer months, leaves of many plants develop browning and scorching which progresses inwards from the leaf margin or downwards from the leaf tip.

The affected parts become dry and brittle and may break away from the remaining green areas.

Facts About Oil In Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1966

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Relationships Oct-Nov 1965 Observation Well Measurements To Median Observed Ground Water Levels, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

1964 Drought In Connecticut, The, Byron E. Janes, Joseph J. Brumbach

Storrs Agricultural Experiment Station

No abstract provided.

Water Chemistry Survey Of Boulder Basin, Lake Mead, P. R. Tramutt, Bureau Of Reclamation

Publications (WR)

The survey results indicate that the impoundment of water behind Hoover Dam has not adversely affected the dissolved oxygen (DO) content and that water quality and DO content were uniform regardless of depth. The study made in April-May 1964 will provide water quality data of Lake Mead prior to releases from Lake Powell as a basis for evaluating Lake Powell's effect on water quality and limnology of Lake Mead. The performance of a DO analyzer was tested and found unsatisfactory at depths below 150 ft. Parameters tested by standard chemical analyses of water samples in the Denver Laboratory and by …

Minerals And Plant Growth

Green Revolution

No abstract provided.

Effect Of Calcium Availability On Alfalfa Grown In Calcareous High Sodium Soils, Harry Irving Nightingale

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In soil science we shall always be confronted with reactions in soils that involve Ca. Early recognition of this led to experimentation in this area. Due to the fact that Ca deficiency is most common in acid soils, the majority of the experimentation has in the past been largely confined to acid soils and their soil-Ca-plant relationships. There has been relatively little research done with Ca and its availability problems associated with alkaline or sodic soils.

Water Levels In Observation Wells In Nebraska, 1964, Philip A. Emery, Mildred M. Malhoit

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1965

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Kimberley Research Station Progress Report, 1964 : Soil Fertility And Plant Nutrition, D B. Parbery, R. Wetselaar

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

BEFORE 1963, very little work, other than that described in Burvill's original report, had been done on the analysis of Ord soils, nor had their fertility status been clearly defined.

Contour Planting For Hillside Orchards. Part 1, N H. Shorter

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

FRUIT growers intending to plant an orchard on sloping land, would be well advised to consider the suitability of the block for planting on a contour system.

Correlation Of Formations Drilled In Test Holes For Interstate 480 Bridge Between Omaha, Nebraska, And Council Bluffs, Iowa, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Revision Of The Classification Of The Pleistocene Deposits Of Nebraska, E. C. Reed, V. H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

The first major contribution of the Conservation and Survey Division to Pleistocene stratigraphy was that of A. L. Lugn (1935) who established a classification of the periglacial deposits of the state and related these deposits to the glacial stages. G. E. Condra and E. C. Reed (1950) used information aquired during the 1935-1950 period in making important revisions to Lugn's classifications. This report was a further revision based on studies made from 1950 to publication date (1965).

Puccinellia : Outstanding Saltland Grass, C V. Malcolm, S. T. Smith

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

"Puccinellia" is a tussocky perennial grass with an outstanding ability to survive salty and waterlogged conditions.

Considerable areas of saltland in Western Australia are suited to its growth.

Seed is now available commercially and in this article the conditions to which the grass is suited are described and establishment and management methods are suggested.

Seed And Pasture Rates For New Dairy Pastures, F E. Ryan

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

THE success or failure of pasture establishment on new land often depends on the interaction of rate of seeding and rate of superphosphate application.

Every year large areas of virgin land are cleared and sown to pasture in the higher rainfall areas, and all-too often the new pasture is not as successful as it should be because too little super is applied, and, in some cases, too little seed.

International Association For Quaternary Research Viith Congress-Guidebook For Field Conference D, Central Great Plains, Bertrand C. Schultz, H.T.U. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska's Groundwater, C. First, J. Kufel, M. Seidel

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska's Groundwater, C. First, J. Kufel, M. Seidel

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Soils, John A. Elder

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Basic-Data Report York County, Nebraska, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Groundwater Level Map (Decline & Rise) Between Fall 1954 And Fall 1964

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Basic-Data Report Saline County, Nebraska, Philip A. Emery

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Influence Of Fertilizer Treatment On The Response Of Sugar Beet Yield To Moisture, Samad Farzanfar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many factors that influence the growth and quality of sugar beets behave in one way under one set of conditions and in quite another under other conditions. Consequently, these factors should be considered together under a dynamic situation to find their interrelations and their influence on sugar beet yield.

This study is a statistical analysis of the interaction of fertilizer and soil moisture potential with the yield of sugar beets grown in a crop rotation under different regimes of irrigation conducted over a period of seven years.

The data are available for the years 1949 through 1956, from an intensive …

Effects Of Temperature On Moisture Conductivity In Unsaturated Soil, Richard O'Bannon Meeuwig

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water moves in soil in response to potential gradients. The basic equation for this movement is the generalized v=-K▽Φ in which v is volume of water passing through a unit area in unit time, K is the conductivity coefficient, ▽, is the gradient operator (vector), and ▽Φ is the potential gradient.