Digital Commons Network^™

A Taxonomic And Ecological Survey Of The Algae Of Lilly Lake, Ann C. Palmer

Theses and Dissertations

A taxonomic and ecological survey of the algae of Lilly Lake in the Uinta Mountains, Utah, was carried on from June 1967 to November 1967. The lake is a typical acid bog lake with an average pH range of 4.5 to 6.9. Extremes of pH in the alkaline range were present due to additional factors. Algae identified included 96 genera and 208 species. These were found in many different types of microenvironmental niches. The main factors which limited the algae to definite areas of the lake were pH, water temperature, light available, and type of substrate. The predominant algal genera …

An Experimental Study Of Variation Within And Between Populations Of Petrophytum Caespitosum (Nutt.) Rydb. With Emphasis On Numerical Techniques, Frank R. Drysdale

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nine populations of sixty-eight individuals representing the distribution of Petrophytum caespitosum (Nutt.) Rydb. (Rosaceae) in the Intermountain Region were investigated for taxonomically significant variation using numerical techniques. On the basis of 19 morphological characters 3 subspecific taxa are recognized. Two taxa are existing subspecies: P. caespitosum (Nutt.) Rydb. var. caespitosum and P. caespitosum (Nutt.) Rydb. var. elatius (S. Wats.) Tides. One new subspecies is described: P. caespitosum (Nutt.) Rydb. var. latifolium. The ecology of the species is discussed. The floral and vegetative anatomy are described. Chromosome counts of 3 populations have given n = 9. A list of herbarium …

Effect Of Gibberellic Acid And Chilling On Nucleic Acids During Germination Of Dormant Peach Seed, Yuh-Nan Lin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of nucleic acid changes influenced by gibberellic acid and chilling treatments in peach seed was performed in an attempt to reach a better understanding of the mechanism involved in breaking seed dormancy.

Gibberellic acid and the chilling treatment increased the RNA content. These two treatments which break dormancy also increased RNA, suggesting a similar mechanism involving RNA. Chilled seeds contained more RNA than did the gibberellic acid treated seeds.

DNA content remained unchanged regardless of treatment.

Dry seed had a greater ribonuclease activity than with soaked seeds. Enzyme changes did not correlate well with the RNA content in …

Effect Of Stage Of Seedling Development On Absorption Of Selected Pre-Emergent Herbicides, Pairoj Suchinda

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Using radioautography ¹⁴C simazine, ¹⁴C EPTC, ¹⁴C 2,4-D, ¹⁴14 DCPA and ¹⁴C pyrazon absorption by seeds of bean (Phaseolus vulgaris L.), squash (Cucurbita maxima), corn (Zea mays), onion (Allium cepa) and oat (Avena sativa) was studied. Simazine, EPTC, 2,4-D and pyrazon were absorbed through the seed coat of bean, squash, corn and onion, the amount increasing with time. Little DCPA was absorbed by seeds of bean, squash, onion and oat. Distribution and translocation of ¹⁴C simazine, ¹⁴C EPTC and ¹⁴C pyrazon occurred in …

The Morphological And Anatomical Effects Of Pyrazon On Beans And Pigweed, James E. Rodebush

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Morphological and anatomical effects of pyrazon, 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone, on Phaseolus vulgaris L. and Amaranthus retroflexus L. were studied after treatment of seeds or seedlings at various pyrazon concentration, exposure times and environmental regimes.

Beans treated with pyrazon developed various chlorotic and necrotic symptoms on the unifoliate leaves. Chlorosis and necrosis were observed first on the leaf margins. Beans treated with pyrazon under a complete dark regime developed symptoms much later than those under an alternating light and dark regime. Pyrazon treated pigweed displayed symptoms similar to those on beans.

Pyrazon induced abnormal chloroplasts and graded cellular collapse in the unifoliate leaves …

The Water Permeability Of Potato Tuber Tissue, Ward Bryce Roberson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Experiments involving pressure, temperature, salt solutions, decenylsuccinic acid, a surfactant, and respiration inhibitors including azide, dinitrophenol, malonate, and iodoacetic acid were conducted to determine the extent to which the cytoplasm of the parenchymatous cells of the potato tuber influenced the tissue's water filterability.

The amount of water or solution moved through the potato tissue was measured by applying a pressure differential to the solution, forcing it across a 1.0 mm thick disc of tissue which was supported in a pressure filtration apparatus. The solution moved was collected and measured directly. In certain experiments the conductivity of dialysis membrane material was …

Factors Associated With The Penetration And Colonization Of Tomatoes By Verticillium Dahliae, Terry Dee Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Experiments have demonstrated that Verticillium dahliae is capable of direct cortical penetration of roots and of subsequent distribution throughout plants of both resistant (Loran Blood) and susceptible (Meteor) varieties of tomato. Plants were inoculated by the root dip method and planted in sterile soil. After one week the fungus was isolated from the upper portions of both the susceptible and resistant varieties as indicated by growth petiole sections plated on PDA. The distribution of the fungus in the resistant plants was irregular, but in susceptible plants the fungus was isolated regularly from all petiole sections. In experiments using disposable growth …

A Biosystematic Study Of The Genus Aconitum (Ranunculaceae) In The Intermountain Region, Rex Cates

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study dealt with the Intermountain aconites of which the chromosome number of n = 8 was obtained.

The bumblebees, Bombus rufocinctus Cresson, B. appositus Cresson, and B. centralis Cresson, are the major pollinators of the allogamous and autogamous aconites.

Two-dimensional thin layer chromatography of cauline leaf extracts showed that the Intermountain aconites studied here consist of one chemical group.

The overall evidence indicates that the Intermountain aconites consist of one species, Aconitum columbianum Nutt., with two varieties, variety columbianum and variety ochroleucum A. Nels.

What Happens To Fertilizer Nitrogen In The Soil?, W. O. Atkinson, John L. Ragland

Agronomy Notes

What happens to the nitrogen a farmer applies as fertilizer each spring?

First, let us consider the forms of nitrogen normally applied, and then attempt to trace what happens to the nitrogen once it is added to the soil. The average complete fertilizer contains approximately 70 percent of its nitrogen in the ammonium nitrogen form (NH4), about 10 percent in the urea form (this is quickly converted to ammonium nitrogen), and the remaining 20 percent in the nitrate nitrogen form (NO₃) .

Influence Of The Soil Environment On The Germination And Survival Of Macroconidia Of Fusarium Roseum 'Sambucinum', Ted Pass Ii

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Ted Pass II on March 1, 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 …

Agronomy Department Tobacco Projects, John Ragland

Agronomy Notes

Here is a list of the 24 tobacco projects (state, USDA, and Smoking and Health Research) being conducted by the Agronomy Department at the University of Kentucky. We hope this will make you more fully aware of the research presently underway on tobacco. Information obtained from these projects will be sent to you from time to time in this newsletter. If you would like more information about these projects, write to the Department of Agronomy, University of Kentucky, Lexington, Ky. 40506.

A Preliminary Study On Ensiling Aspen Bark, Charles Helleloid, John Klow, Gary Pullar, John Veranth

Journal of the Minnesota Academy of Science

A preliminary study was conducted on the ensiling of aspen bark in laboratory silos for the production of animal food. Several types of silo, both with and without an enzyme preparation, were tested. Results of physical and chemical tests on the contents indicate that definite changes occur when bark is ensiled, and that these changes differ with ensiling conditions. Several of these changes suggest possibilities for future research.

Mature Pine Forests In Duluth Harbor Area, Donald W. Davidson, John B. Bernard

Journal of the Minnesota Academy of Science

Quantitative and qualitative studies have been made on mature pine forests of selected areas on Minnesota Point and Wisconsin Point in the Duluth-Superior Harbor area. The forests were sampled by the point quarters method. The leading dominant in the Minnesota forest was Pinus resinosa, while the leading dominant in the Wisconsin forest was Pinus strobus. Trees up to 173 years of age were found on Minnesota Point, while the maximum age of the trees sampled on Wisconsin Point was 142 years. A total of 87 species of vascular plants were identified in the two areas.

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

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

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

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

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.

Land Resource Evaluation - Ninety Mile Tank Report On Trials Conducted 1968, 1969 And 1970 By Plant Research Division And Wheat And Sheep Division, J W. Gartrell

Experimental Summaries - Plant Research

In the late 1920's the seven million acres of virgin land between Hyden and Salmon Gums were considered for settlement under the "3,500 farms scheme" because it constituted "practically the only large area of wheat lands in a suitable climatic zone not then settled in Australia" (Teakle 1939). At that time the sandy scrubplain soils were more a liability than an asset because methods of profitably farming the light soils had not then been evolved. These useless scrubplains merely increased the distances between patches of' more f'ertile soils. The scheme for settlement was based mainly on the potential of' the …

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

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

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

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.

New Varieties Top 1967 Yield Tests, H M. Fisher

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

LARGE gains can result from using improved cereal varieties and in recent years activity in breeding varieties adapted to local conditions has increased.

The varieties available and their suitability for different areas and conditions need constant review.

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 …

Report On Trials Conducted In 1978 And 1969 By Plants Research Division And Wheat And Sheep Division, J W. Gartrell

Experimental Summaries - Plant Research

In the late 1920's the seven million acres of virgin land

between Hyden and Salmon Gums were considered for settlement under

the "3,500 farms scheme" because it constituted "practically the

only large area of wheat lands in a suitable climatic zone not then

settled in Australia" (Teakle 1939).

A Descriptive Model Of The Sweet Corn And Pea Processing Industry Of Southern Minnesota, David P. Brennan

All Graduate Theses, Dissertations, and Other Capstone Projects

This research project was initiated to construct and test a model of the sweet corn and pea processing industry of Minnesota. The model is a composite abstract consisting of several basic theories of general application and several hypotheses which were formulated to consider the unique properties associated with sweet corn and pea processing. These are related to the agricultural and industrial factors which are inseparable parts of sweet corn and pea processing. Testing the model concerned the evaluation of the theories and hypotheses with regard to the real life situation. The basic concepts used in the model were refined and …

Subterranean Clover Establishment In The Wheatbelt, M L. Poole

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

Care and attention to detail will greatly increase the chances of establishing good subterranean clover pastures in the wheatbelt.

PASTURE ESTABLISHMENT usually takes second place to cropping in the wheatbelt, with many farmers "bunging in a bit of clover" and hoping for the best. The worst often transpires, with either patchy stands or complete failure resulting.

Using "cheap" methods of establishment is a short-sighted approach and a waste of energy and resources.

A Survey Of Stone Fruit Plantings In Western Australia, Department Of Agriculture, Western Australia

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

This article presents the results of a survey of commercial stone fruit plantings in Western Australia, carried out by officers of the Department of Agriculture during 1966.

The main purpose of the survey was to provide varietal and other statistics not previously available in this State.

The results also give useful indications of future trends in the industry.