Life Sciences Commons^™

Cynipid Gall Anatomy And Distribution Of The Causal Organism, David E. Murray

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 in Biology by David E. Murray on April 28, 1972.

Frost Injury To Cereals In W.A, M W. Perry, A. G. P. Brown

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

Late spring frosts commonly reduce yields and affect the quality of grain in wheat crops, especially in the southern, eastern and north-eastern districts. The damage is usually localised on individual farms, but is sometimes widespread.

Barley, and oats to a lesser extent, are also affected. Average losses of wheat in Western Australia have been estimated at 3 to 5 per cent, per year, or about 2 million bushels on current production figures.

Influence Of Soil Acidity On The Occurrence Of Athiorhodaceae, Eville Gorham, Douglas C. Pratt

Journal of the Minnesota Academy of Science

Enrichment cultures from strongly acid Sphagnum bog peats and moderately acid to circumneutral fen peats revealed Athiorhodaceae to be present in almost all suitably wet samples above pH 5.3 and absent from almost all samples below pH 4.7. These bacteria were recorded in only one of fifty cultures from acid humus layers in a jack pine forest, and in none of thirty cultures from moderately acid humus layers in a mixed woodland. They were also absent from old-field surface soils, which often contained considerable amounts of organic litter.

Spring 1972 Conference Issue, Alfred W. Boicourt, Robert W. Schery, H. E. Stokinger, W. O. Miller

Turf Bulletin

1. For the Homeowner by Alfred W. Boicourt (page 3)
2. Slow-Release Fertilizer for Lawns by Robert W. Schery (4)
3. Sanity in Research and Evaluation of Environmental Health by H.E. Stokinger (7)
4. Turf Conference (10)
5. Recent Developments with Dursban Insecticide for Chinch Bug Control by W.O. Miller (17)

Summer 1972, Paul R. Harder, Joseph Troll

Turf Bulletin

1. Improving an Old Lawn (page 3)
2. Management of Golf Fairways (4)
3. Enzyme Liquification of Garbage (5)
4. Performance of Seven Fungicides for Control of Snow Mold (6)
5. 1972 Control of Common Turf Diseases (8)
6. 1972 Control of Common Turf Weeds (9)
7. Editorial--UMass. Turfgrass Research Fund (11)
8. Purr-Wick--Rootzone System for Turf (13)

Fall 1972, W. R. Mullison, John R. Hall, Paul Harder, John M. Zak, Joseph Troll, Anthony J. Terzis

Turf Bulletin

1. Ecological Effects of Herbicides (3)
2. Turf Management (6)
3. For the Homeowner--How to Handle Those Tough Shady Spots (7)
4. Crownvetch--One answer to Those Problem Maintenance Areas (8)
5. Kentucky Bluegrass Variety Trails (10)
6. Grass, an Endangered Species (15)
7. Turf Grass Research (16)
8. Have Times Changed? Caring for Trees on the Golf Course (1929) (19)
9. Lime...350 Million Years in the Making (19)
10. 1972--A Tough Season (20)

Winter 1972, Robert N. Carrow, Jack Altman, Kenneth Gowans, Paul Harder, Ernst Horber, Herbert T. Streu, Carlos Cruz

Turf Bulletin

1. Factors Affecting the Adaptation and Competitiveness of Poa Annua L. (3)
2. Environmental Factors Influencing Turfgrass Diseases (6)
3. Turfgrass Seeds by the Pound (10)
4. Too Heavy or Too Light (11)
5. Plant Resistance to Insects (13)
6. Control of the Hairy Chinch Bug in Turfgrass in the Northeast with Dursban Insecticide (22)
7. University of Massachusetts Turfgrass Research Fund (24)

Mutual Exclusion Between Salmonberry And Douglas-Fir In The Coast Range Of Oregon, Kenneth Ray Still

Dissertations and Theses

One serious problem faced by the forest industry in the Pacific Northwest is poor regeneration of commercial trees on land which is harvested and subsequently dominated by brush species. In Coastal Oregon, salmonberry is one of these brush species. Detailed investigations of field sites indicate that light intensity in the brush stands was low but sufficient for germination and early growth of Douglas-fir seedlings and soil moisture percentages and nutrient levels were high enough to support early Douglas-fir growth. Laboratory tests demonstrated the presence of leachable phytotoxins in the leaves of salmonberry. The hypothesis resulting from this study is that …

Photoperiodism And Dormancy In Silver Maple Seedlings, Maria Regis Kilkenny

Masters Theses

No abstract provided.

Ethnobotanical Studies On Selected Plants Of Northeastern Mexico, Wayne M. Pichon

Masters Theses

No abstract provided.

Broomsedge In Illinois, David F. Kunz

Masters Theses

No abstract provided.

Smooth-Stemmed Turnip, B J. Quinlivan, A. C. Devitt

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

Cruciferous weeds are common throughout the agricultural areas of Western Australia. They include wild turnip, wild mustard, wild radish, charlock and raphistrum weed or short fruited turnip.

Another one—tentatively named smooth-stemmed turnip—has recently been sighted. Its exact weed potential will not be known for some years, but it is likely to spread through the south coastal districts where the climate and sandy surfaced soils favour its growth.

A Taxonomic Study Of The Marine Algae Of Netarts Bay, Oregon, Charles Jerome Kunert

Dissertations and Theses

Gathering taxonomic data is fundamental to any biological or ecological research. It was the intent of this paper to increase the storehouse of taxonomic information by studying the marine algae of one section of the Oregon coastline. Netarts Bay was chosen because of its accessibility and generally primitive nature. It is in an area of Oregon largely untouched by phycologists and so offered an opportunity for original research.

Techniques of collecting and preserving specimens were kept as simple as possible, thus allowing a proportionately greater amount of the available time to be spent in the classification of the organisms. The …

Vegetation Survey Of Floodplain Forests Along The Wabash River, Philip E. Phillippe

Masters Theses

No abstract provided.

Old Field Succession In Pinellas County, Florida, Roger T. Poole

Masters Theses

No abstract provided.

A Survey Of The Lichen Flora Of Turkey Run State Park In Parke County, Indiana, Charles J. Mertz

Masters Theses

No abstract provided.

Annual Pasture And Weed Plant Ecology, B J. Quinlivan

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

The purpose of this article is to outline a few basic principles of pasture and weed ecology with particular reference to seed dormancy mechanisms.

These principles apply to many pasture plants and weeds, although their relative importance varies with the particular plants under study.