Life Sciences Commons^™

Protein Synthesis During Fungal Spore Germination. Iv. Transfer Ribonucleic Acid From Germinated And Ungerminated Spores, James L. Van Etten, R. Kent Koski, Mahmoud El-Olemy

Department of Plant Pathology: Faculty Publications

Transfer ribonucleic acid (tRNA) fractions isolated from germinated and ungerminated spores of Botryodiplodia theobromae and Rhizopus stolonifer had acceptor activity for all 20 amino acids commonly found in protein, when tested with an enzyme fraction from germinated spores. Accordingly, it is unlikely that the absence of tRNA for a particular amino acid limits protein synthesis in fungal spores.

Characterization Of Xanthomonas Phaseoli Bacteriophages, Anne K. Vidaver, Max L. Schuster

Department of Plant Pathology: Faculty Publications

Ten bacteriophages for Xanthomonas phaseoli were characterized. On the basis of adsorption rates, latent period and burst size, plaque morphology, host range, efficiency of plating, ultrastructure, sensitivity to osmotic shock, streptomycin sensitivity, temperature effects on plating efficiency, and serology, the phages were separated into at least three groups. Some of the phages were infectious for Pseudomonas phaseolicola (four strains) and P. syringae (one strain) in a narrow temperature range. The taxonomic and ecological significance of this finding is discussed.

Overwintering Of Erwinia Amylovora Inside Living Host Tissue In Cache Valley, Utah, G. Doyle Morrill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Experiments were conducted to see if Erwinia amylovora (Burrill) Winslow et al. overwinters inside living host tissue in Utah. Bacteria, collected from apple, pear, mountain ash, chokecherry and Pyracantha, were used in the experiment. Isolates taken from buds and inner bark plated on nutrient yeast dextrose agar, we re tested by serological and bacteriophage techniques. Those showing positive tests were then inoculated into Bartlett pear seedlings to test virulence.

Both virulent and avirulent isolates were isolated from each species of plant in the experiment. Pathogenic bacteria were isolated from diseased tissue near cankers, as well as from apparently healthy inner …

Potato Early Blight And Storage Rot, Department Of Agriculture, Western Australia

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

POTATO Early Blight and storage rot are different phases of the same disease.

Both symptoms are caused by the fungus Alternaria solani.

Deferred Grazing Improves Soft Spinifex Association, H Suijdendorp

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

THE Pastoral region in Western Australia where Triodia pungens (soft spinifex) makes up most of the vegetation, covers an area of about 17,000 square miles in the Forrest and De Grey pastoral areas.

On the deeper granitic sands in much of the region, plant associations revert to a pure stand of soft spinifex after about five or six years' grazing. It is common practice to burn at this stage, to encourage the re-establishment of other species and the production of palatable spinifex regrowth.

Pasture Seed Production In Western Australia, B J. Quinlivan

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

Pasture seed production in Western Australia is an industry with a somewhat turbulent past. Booms and slumps have been the rule rather than the exception.

However, during the past few years there has been some degree of "stability"—if not in price, at least in terms of total production.

Lupins In Western Australia. 1. Species And Varieties, John Sylvester Gladstones

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

First in a series of articles on the varieties, cultivation and uses of lupins in Western Australia.

Lupins are ideally suited to the climate and soils of many districts of Western Australia and their cultivation here dates from the early years of the century.

However, although there were some 500,000 acres of lupins growing in the State in 1968, their cultivation in recent years has been largely limited to infertile sandplain soils where other legumes usually fail.

Long Term Rotation Trials, Ian Rowland

Experimental Summaries - Plant Research

The object of these trials is to attempt to determine the best rotation for each area or at least give some guidelines for recommendations as to the optimum rotation. Also to determine the effect of various pasture phases on the performance of the following crops and the number of crops required to utilise any accrued benefit from the pasture. In addition the trials on the Salmon Gums Research Station (68SG5) will attempt to compare cereal rotations on both volunteer and barrel medic pastures. It is also hoped to be able to get some estimate of grazing production from barrel medic …

Detecting Oak Wilt By False Color Infrared Aerial Photography, R. P. Latham, D. W. French, Merle P. Meyer

Journal of the Minnesota Academy of Science

An aerial survey using false-color infrared film at scales of l :9,600 and l : 12,000 located 93.7% of the oak wilt infection centers ii:1 the 1,500-acre study area. The ground survey of the same area also located 93.7% of the infection centers but half of those found by this method were difficult to relocate because they were not correctly mapped. Whereas aerial survey usually missed only trees of small diameter, the ground survey missed trees as large as eight inches in diameter.

Germinability Factors Of Field-Grown Sorghum Seed, D. B. Sauer, C. M. Christensen

Journal of the Minnesota Academy of Science

Germination of sorghum seed did not appear to be affected by spraying the plants with Maneb or with a chemical defoliant before harvest. Mechanical threshing greatly reduced germination of most but not all lots; this injury is thought to be related to the maturity and/ or moisture content of the seed when threshed, although other varietal differences may be important. At any given time there were large differences in moisture content between seeds of different hybrids, different plants of any one hybrid, and between different parts of the same panicle.

Turf Management Conference Proceedings, The Stockbridge School Turf Management Club

Turf Clippings

1. The Value of Earthworms by Eric Johnson (page 1)
2. Golf Course Bridge Construction by Robert A. Huntley (2)
3. Importance of Trees and Care by Donald Pipczinski (3)
4. Management Practices Help Control Turf Diseases by Larry Bunn (3)
5. Class Will of '69 (5)
6. Famous Sayings of '69 (6)
7. The Reluctant Human by John Denison (A-1)
8. Communicating by Frank Gallagher (A-4)
9. Vandalism on the Golf Course by Edward B. Patroski (A-7)
10. The GCSAA Organization - What it Means to You (A-13)
11. Role of Potash in Turf Production by Lindsay D. Brown (A-17)
12. Dew is Note Dew by Tom Mascaro (A-28)
13. Insects in …

Spring 1969, Geoffrey S. Cornish, William G. Robinson, Walter H. Gardner, S. K. Ries, Ken Voorhies, Dale Kern, W. E. Cordukes, Gerry Finn

Turf Bulletin

1. Design Features the Golfer Wants by Geoffrey S. Cornish & William G. Robinson (page 3)
2. How Water Moves in the Soil by Walter H. Gardner (6)
3. Course Care in Winter (8)
4. Spray-on Protein Boosters by S. K. Ries (9)
5. 1969 Turf Conference Program (12)
6. How to Get More Benefits from Our Next Conference (13)
7. Budget Control by Ken Voorhies (15)
8. Turf Analysis Test by Dale Kern (18)
9. Tolerance of Various Turfgrasses to Foliar Applications of Road Salt by W.E. Cordukes (22)
10. "He 'Fitz' the Bill" by Gerry Finn (24)

Summer 1969, Robert Schery, Edward G. Konieczny, Jeff Wheeler, William H. Daniel, Elwin E. Deal, James W. Timmerman

Turf Bulletin

Massachusetts Turf and Lawn Grass Council
Better Turf Through Research and Education

Contents:

1. New Lawn Seeds Ready to Sprout Profits by Robert W. Schery (page 3)
2. Potash Experiments on Turf Grasses by Edward G. Konieczny (4)
3. Understanding the Basis... Fertilizer Spreader: Spreading Relationships (9)
4. TVA Shows Sulpher Coated Urea (13)
5. Salinity Tolerance of Turfgrass by Jeff Wheeler (19)
6. Poa Annua by William H. Daniel (23)
7. Turf Management by Elwin E. Deal (26)
8. The Art and Science of Greenskeeping by James W. Timmerman (27)

Fall 1969, Gene C. Nutter, W. H. Garman, Charles Wurster, J. S. Coartney, A. H. Kates

Turf Bulletin

Massachusetts Lawn and Turf Grass Council
Better Turf Through Research and Education

1. Artificial Turf Faces Credibility Gab by Dr. Gene C. Nutter (page 1)
2. Nitrogen Facts and Fallacies by W.H. Garman (2)
3. DDT Opponents by Charles Wurster, Jr. (10)
4. DDT Defenders by Charles Wurster, Jr. (11)
5. What Type 2,4-D to Use? by J.S. Coartney and A.H. Kates (21)
6. Irrigation Circuit Break Pinpointed in One Hour (24)

Winter 1969, Warren Bidwell, Basil E. Purhiss, J. Phil Campbell Jr., Edwin M. Wheeler, J. H. Gordon, Melvin Robey, Howard R. Taylor, Harold D. Loden

Turf Bulletin

1. Plants to Enhance Man's Environment - Prepared by a Joint Task Force of the U.S. Department of Agriculture and and the State Universities and Land Grant Colleges (page 1)
2. Man and his Golf -- A Need Fulfilled by Warren Bidwell (8)
3. The Cost of Infected Water by Basil E. Purhiss (11)
4. U.S.D.A.'s Campbell Calls for Truth About Polution by Phil Campbell, Jr. (14)
5. Fertilizers are Not Threatening our Environment by Edwin M. Wheeler (16)
6. Turf--Basic Principles of Nutrition by J.H. Gordon (18)
7. Use of Ion-Exchange Resins in Fertilization of Turfgrasses by Melvin Robey (20)
8. The Professional Approach by Howard R. …

Linseed : An Alternative Crop For The South Coast, R J. Doyle, R. J. Guyton

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

IN the over-17 inch rainfall zone of the south coast region of Western Australia animal production is the main farm enterprise.

Although farmers in the main cereal growing regions of W.A. crop about one-third of their cleared land each year, farmers in the south have been reluctant to crop more than about 12 per cent, of their cleared area.

Effect Of Culture Environment Upon Sporangium And Zoospore Production Of Three Species Of Phytophthora, J. L. Dale, J. P. Jones

Journal of the Arkansas Academy of Science

No abstract provided.

Controll Of Eelworm Diseases Of Bananas In Western Australia : A Review, O M. Goss, M. G. Hawson

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

During the 1950's, a decline in bananas in plantations in Carnarvon, caused by heavy infestations of eelworms, prompted investigations into eelworm control.

The work was started in 1955. The results and recommendations based on experiments have been published in Department of Agriculture Bulletin 3532.

Legumes Or Artificial Nitrogen?, N J. Halse

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

Choosing between legumes and artificial nitrogen is not the problem which many farmers are making it.

This article deals with the choice in the mixed cereal and sheep farms of the Western Australian wheatbelt.

Pasture Establishment In The Wheatbelt, M L. Poole

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

The value of legume based wheatbelt pastures is so great that considerable care is warranted during their establishment. Without such care patchy establishment or even complete failure is likely to occur.

IN THE WHEATBELT too many farmers still put less effort into their seeding of pasture species than their seeding of crops.

This may be because both compete for the farmer's time in the busy seeding period and it is the cereal crop which possesses the obvious cash value.

However, the total value of a good pasture has to be assessed over a period of several years because of its …

Linseed Production Survey : Esperance, 1968, R J. Guyton

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

A SURVEY conducted after the 1967 linseed season found that although most farmers understood the requirements of linseed growing there were several crop failures. These were associated with time of planting, soil type and insect control measures.

The Esperance district office of the Department of Agriculture conducted a second survey during December, 1968 and January, 1969

Oat Diseases In Western Australia, W R. Tweedie, W. A. Shipton

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

OVER ONE MILLION acres of oats are grown yearly in this State, making the crop next in importance to wheat.

Pathogenic organisms are responsible for considerable reductions in yield, yet losses can be minimized if control measures are taken.

Barley Yellow Dwarf Virus In Western Australia, W A. Shipton

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

BARLEY yellow dwarf virus disease was first positively identified in Western Australia in 1961.

Records indicate that symptoms approximating those later found to be caused by this disease were reported as early as 1936.

Paspalum Vaginatum : For Salty Seepages And Lawns, C V. Malcolm, I. A. F. Laing

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

PASPALUM VAGINATUM, aptly termed "sea shore paspalum" has an amazing ability to thrive in wet salty situations. It is also a good lawn grass.

Seed of the grass is not available but it may easily be established by planting pieces.

This article reviews where and how the grass may be used.

Lupins In Western Australia. 3. Cultivation Methods Continued, John Sylvester Gladstones

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

THE characteristics of the lupin varieties grown in Western Australia were described in the first two articles of the series (Journal of Agriculture, August and September, 1969), together with recommendations for growing bitter sandplain lupins.

This article gives general recommendations for growing grain lupins, and discusses the main diseases and pests of lupins in Western Australia and their control.

Plant Galls, Michael Paul Grisham

Honors Theses

Plant galls, or cedidia, are defined as

...pathologically developed cells, tissues, or organs of plants that have risen mostly by hypertrophy and hyperplasy under the influence of parasitic organisms like bacteria, fungi, nematoda, mites, or insects.

The plant gall is unique in providing not only food, but shelter as well for its host. While the host benefits, damage to the plant results. Among other things sap flow is disturbed, premature decay results, non-essential parts are developed at the cost of essential parts, and many other injuries occur. A few examples of the benefits of plan galls may be cited. Nitrogen …

Dehulling And Scarifying Serradella Seed, J R. Weeldenburg, R. W. Smith

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

YELLOW FLOWERED SERRADELLA is growing in popularity as a pasture legume on coastal sandy soils in Western Australia, and its use may increase further when new selections become available.

However, its rate of entry into commerce has been limited by the poor germination of the seed available.