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Precision Drought Stress In Orchards: Rootstock Evaluation, Trunk Hydration And Canopy Temperature, Lance V. Scott 2017 Utah State University

Precision Drought Stress In Orchards: Rootstock Evaluation, Trunk Hydration And Canopy Temperature, Lance V. Scott

All Graduate Theses and Dissertations

In many areas, over half of all diverted water is used for irrigation. Tree fruit crops use a lot of water, but water productivity can be increased using properly-timed precision water stress. In addition to water conservation, increases in water productivity arise from better fruit quality, increased storage life and reductions in pruning and maintenance. One major hurdle to applying precision water stress in orchards is the lack of a reliable, automated method of determining tree water status. However, the influence of physiological characteristics such as rootstock vigor on water productivity are also important. Selecting the most appropriate rootstocks and ...


Acer Rubrum Wats., Elisabet Ore 2017 Eastern Illinois University

Acer Rubrum Wats., Elisabet Ore

Specimens by Name

No abstract provided.


Acer Pennsylvanicum Du Roi, G. D. H. 2017 Eastern Illinois University

Acer Pennsylvanicum Du Roi, G. D. H.

Specimens by Name

No abstract provided.


Acer Saccharinum L., Cris Thomas 2017 Eastern Illinois University

Acer Saccharinum L., Cris Thomas

Specimens by Name

No abstract provided.


Acer Saccharinum L., Cris Thomas 2017 Eastern Illinois University

Acer Saccharinum L., Cris Thomas

Specimens by Name

No abstract provided.


Acer Saccharinum L., Paul B. Marcum 2017 Eastern Illinois University

Acer Saccharinum L., Paul B. Marcum

Specimens by Name

No abstract provided.


G-Quadruplex (G4) Motifs In The Maize (Zea Mays L.) Genome Are Enriched At Specific Locations In Thousands Of Genes Coupled To Energy Status, Hypoxia, Low Sugar, And Nutrient Deprivation, Carson M. Andorf, Mykhailo Kopylov, Drena Dobbs, Karen E. Koch, M. Elizabeth Stroupe, Carolyn J. Lawrence, Hank W. Bass 2017 United States Department of Agriculture

G-Quadruplex (G4) Motifs In The Maize (Zea Mays L.) Genome Are Enriched At Specific Locations In Thousands Of Genes Coupled To Energy Status, Hypoxia, Low Sugar, And Nutrient Deprivation, Carson M. Andorf, Mykhailo Kopylov, Drena Dobbs, Karen E. Koch, M. Elizabeth Stroupe, Carolyn J. Lawrence, Hank W. Bass

Drena Dobbs

The G-quadruplex (G4) elements comprise a class of nucleic acid structures formed by stacking of guanine base quartets in a quadruple helix. This G4 DNA can form within or across single-stranded DNA molecules and is mutually exclusive with duplex B-form DNA. The reversibility and structural diversity of G4s make them highly versatile genetic structures, as demonstrated by their roles in various functions including telomere metabolism, genome maintenance, immunoglobulin gene diversification, transcription, and translation. Sequence motifs capable of forming G4 DNA are typically located in telomere repeat DNA and other non-telomeric genomic loci. To investigate their potential roles in a large-genome ...


Promising New Cherries, J. L. Budd 2017 Iowa Agricultural College

Promising New Cherries, J. L. Budd

Bulletin (Iowa Agricultural Experiment Station)

In the summer of 1882 the writer had a fine opportunity for studying the character of tree and fruit of the European cherries from the valley of the Moselle in East France, eastward to the Volga in Russia. In the spring of 1883 we imported one year old trees o f the varieties which we decided to be most promising for trial on the prairies of the Northwest. These trees were set in orchards and have had hard U 6 a g e , as they have been exposed to the recent test summers and winters, that have killed out the ...


Grasses And Other Forage Plants, A. A. Crozier 2017 Iowa Agricultural College

Grasses And Other Forage Plants, A. A. Crozier

Bulletin (Iowa Agricultural Experiment Station)

About seventy-live kinds of grasses and other forage plants were sown last spring. A considerable number of these were in one-eighth-acre plots, with a thin seeding of rye for protection. The rye proved to be the winter, instead of the spring variety, as was intended, and it grew so rank as to cover the ground and greatly injure the grasses. It was cut and removed July 7, but the weather following was so hot and dry that some of the kinds failed to recover. In addition to this, a severe attack of chinch bugs occurred in the* latter part of ...


Corn Tassels, Silks And Blades, R. P. Speer 2017 Iowa Agricultural College

Corn Tassels, Silks And Blades, R. P. Speer

Bulletin (Iowa Agricultural Experiment Station)

Large com crops in Iowa, point to general prosperity; but poor com means more or less want and suffering, as it is the crop upon which people depend most for a living. Good farmers have grown 75 bushels of corn per acre frequently in Iowa in ordinary seasons; but generally, the average yield per acrc is not more than half of the number of bushels just named. The causes of the difference between good and poor crops can be traced easily, to differences between the methods of preparing and tilling the soil and differences between varieties of corn. On the ...


Effects Of Growing-Season Prescribed Burning On Vigor Of Sericea Lespedeza In The Kansas Flint Hills: Ii. Plant-Species Composition, J. A. Alexander, W. H. Fick, J. Lemmon, G. A. Gatson, G. W. Preedy, K C. Olson 2017 Kansas State University, Manhattan

Effects Of Growing-Season Prescribed Burning On Vigor Of Sericea Lespedeza In The Kansas Flint Hills: Ii. Plant-Species Composition, J. A. Alexander, W. H. Fick, J. Lemmon, G. A. Gatson, G. W. Preedy, K C. Olson

Kansas Agricultural Experiment Station Research Reports

Fire has, for centuries, been a key force for sustainability of native ecosystems in the Kansas Flint Hills. Prior to the arrival of European settlers, prescribed and wild fires occurred at less than 3-year intervals in the tallgrass prairie region. As a result, native tallgrass plant communities adapted to fire at regular intervals and plant-species composition became stable on a geologic time scale.
Currently, prescribed fire is used in the Kansas Flint Hills as a treatment for control of woody-stemmed invasive species such as eastern red cedar, honey locust, and roughleaf dogwood. These fires are generally applied in March and ...


Effects Of Growing-Season Prescribed Burning On Vigor Of Sericea Lespedeza In The Kansas Flint Hills: I. Suppression Of Seed Production And Canopy Dominance, J. A. Alexander, W. H. Fick, J. Lemmon, G. A. Gatson, G. W. Preedy, K C. Olson 2017 Kansas State University, Manhattan

Effects Of Growing-Season Prescribed Burning On Vigor Of Sericea Lespedeza In The Kansas Flint Hills: I. Suppression Of Seed Production And Canopy Dominance, J. A. Alexander, W. H. Fick, J. Lemmon, G. A. Gatson, G. W. Preedy, K C. Olson

Kansas Agricultural Experiment Station Research Reports

Sericea lespedeza (Lespedeza cuneata) is a highly fecund noxious weed in Kansas and surrounding states. Individual plants are capable of producing greater than 1,000 seeds annually. Vigorous seed production allows sericea lespedeza to rapidly infiltrate native and cultivated grasslands; seed can be transported great distances via farm machinery and the alimentary canal of wild and domestic herbivores. In Kansas alone, sericea lespedeza infests more than 700 square miles of pasture, primarily in the Flint Hills region. The resulting damage to native habitats for wildlife and pasture quality for domestic herbivores has been devastating.
The predominant grazing management practice in ...


Bacterial Activities And Crop Production, Percy Edgar Brown 2017 Iowa State College

Bacterial Activities And Crop Production, Percy Edgar Brown

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Until the present time studies in soil bacteriology have dealt almost exclusively with the occurrence and activities of microorganisms in the soil and no attempt has been made to interpret experimental results from the standpoint of crop production. This is due, of course, to the fact that as a science soil bacteriology is scarcely out of its infancy and the preliminary investigations in any science must of necessity deal mainly with underlying principles and such studies are always apt to be rather fragmentary in character.


Determination Of Amino Acids And Nitrates In Soils: Amino Acids, Ammonia And Nitrates In Manured And Limed Soil, R. S. Potter, R. S. Snyder 2017 Iowa State College

Determination Of Amino Acids And Nitrates In Soils: Amino Acids, Ammonia And Nitrates In Manured And Limed Soil, R. S. Potter, R. S. Snyder

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

In view of the fact that no data had ever been obtained on the quantitative relationships of the organic material in the soil by such methods as would preclude a chemical transformation, two things seemed desirable, in continuing the humus investigations at the Iowa Agricultural Experiment Station. First, to attempt the analysis of the organic material of the soil without subjecting it to hydrolysis or other chemical change, and second, to correlate the proportionate quantities of the compounds or classes of compounds found with the kind of soil, its history, treatment, fertility, etc.


Relation Of Moisture To Seed Production In Alfalfa, J. N. Martin 2017 Iowa State College

Relation Of Moisture To Seed Production In Alfalfa, J. N. Martin

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

As a result of the experiments carried on to determine the effect of moisture upon seed production in alfalfa, the following conclusions have been drawn, based upon the work of the experiments as presented in this bulletin:

1. The setting of seed pods in alfalfa, (Medicago sativa), is dependent upon the proper functioning of the pollen.

2. Germination of the pollen depends upon a proper supply (l! moisture. If the water supply is either above or below a certain requirement, the pollen does not germinate.

3. The water requirement for germination of the pollen depends upon a certain ratio between ...


Hardiness In The Apple As Correlated With Structure And Composition, S. A. Beach, F. W. Allen Jr. 2017 Iowa State College

Hardiness In The Apple As Correlated With Structure And Composition, S. A. Beach, F. W. Allen Jr.

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

The breeding of hardy apples is naturally such a long time proposition that it would be a distinct advantage if by microscopic examination of the wood, by mechanical tests, or by other observations the hardiness of a tree could be determined while it was still in the nursery, The following is a summary of the facts brought out in the investigation of "Hardiness in the Apple as Correlated with Structure and Composition. "

1. The cutting, compression and penetration tests seemed to indicate some correlation between hardiness and hardness, but exceptions were found.

2, Twigs from northern sections, except the forms ...


Sulfofication In Soils, P. E. Brown, E. H. Kellogg 2017 Iowa State College

Sulfofication In Soils, P. E. Brown, E. H. Kellogg

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Sulfur has long been known to be one of the essential plant food constituents. It has always been believed, however, that there was sufficient present in all soils for the optimum growth of crops. This assumption has been very largely based on Wolff's analyses of the ashes of various crops which showed the presence of very small amounts of sulfur.

The recent work of many investigators has demonstrated, however, that the amount of sulfur in plant materials as determined in the ash is, in most cases, entirely too low; that there is a considerable loss of sulfur in the ...


The Determination Of Ammonia In Soils, R. S. Potter, R. S. Snyder 2017 Iowa State College

The Determination Of Ammonia In Soils, R. S. Potter, R. S. Snyder

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Theoretically, the ideal method for determining ammonia in soils would give the absolute amount of ammonia present as such and as the ammonium radical, but in the light of present knowledge, it cannot be said beyond all doubt that any conceivable method would give this ideal result. This is true because a large part of the nitrogen of the soil is present in protein and protein degradation products, the extensive decomposition of which gives large amounts of ammonia. The uncertainty regarding just what products are present does not permit the finding of conditions which we can be certain will expel ...


Bacteriological Studies Of Field Soils, Iii. The Effects Of Barnyard Manure, Percy Edgar Brown 2017 Iowa State College

Bacteriological Studies Of Field Soils, Iii. The Effects Of Barnyard Manure, Percy Edgar Brown

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

The conclusions which may be drawn from the experiments upon the effects of barnyard manure on bacteriological activities of field S'oils presented in this bulletin are as follows:

1. Applications of manure up to sixteen tons per acre increased the numbers of organisms in the soil as shown by the growth on modified synthetic and albumen agar. The ammonifying power of the soil as shown by tests with the casein-fresh soil, albumen-fresh soil, dried blood-fresh soil, and dried blood-air-dried soil methods, and the nitrifying power tested by the ammonium sulfate-fresh soil, and the ammonium sulfate-air- dried soil methods were ...


Small Pasture Management Guide For Utah, James Barnhill, Shawn Olsen, Randy Sessions, Dean Miner, Tiffany Julen-Day, Niels Hansen, Clark Garn 2017 Selected Works

Small Pasture Management Guide For Utah, James Barnhill, Shawn Olsen, Randy Sessions, Dean Miner, Tiffany Julen-Day, Niels Hansen, Clark Garn

Shawn Olsen

No abstract provided.


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