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Tobacco Seed-Bed Management, A E. Baker

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

A SUCCESSFUL tobacco crop depends initially on an ample supply of well-grown, disease-free seedlings available early in the planting season.

If planting is held up due to a poor supply of seedlings, the resulting crop will not be grown in the most favourable part of the season. Late-grown crops nearly always give low returns.

Hormone Sprays For Apricots, J E L Cripps

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

VARIOUS hormone sprays have been applied to apricots with the object of increasing fruit size and hastening maturity, and of these 245TA, the tri-ethanol amine salt of 245 trichlorophenoxyacetic acid, has in general, proved the most successful.

The increase in fruit diameter obtained with this spray in Western Australia has varied between 5 and 15 per cent, and is due to an increase in the size of the cells within the fruit, not to the production of a greater number of cells.

Weed Research. 7. Weed Control Around The Yard, Geoffrey A. Pearce

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

MANY farmers and city householders have weed problems around houses and sheds which can be readily overcome by treatment with appropriate herbicides.

The risk from fire through weeds and unslightly growth can easily be removed and an area free of any plant growth can be maintained with little effort for a considerable period.

Trees Of Western Australia. 39. Comet Vale Mallee (Eucalyptus Comitae-Vallis). 40. Woodline Mallee (E. Cylindrocarpa Blakely). 41. Ribbon-Barked Mallee (E. Sheathiana Maiden). 42. Burracoppin Mallee (E. Burracoppinensis Maiden Et Blakely). 43. Cap-Fruited Mallee (E. Dielsii C.A. Gardn.). 44. Spearwood Mallee (E. Doratoxylon F. Muell.) 45. Apple Mallee (E. Buprestium F. Muell.). 46. Goblet Mallee (E. Scyphocalyx (F. Muell.) Maiden Et Blakely), Charles Austin Gardner

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

THIS mallee, formerly thought to be restricted to the Comet Vale district, must be very rare in that locality, since it is seldom found growing there, but on the other hand it has an extensive range, being found as far west as Perenjori. Kalannie and Kulja, thence eastwards to Comet Vale, and southward to Mount Holland which lies south of Southern Cross.

Soursob (Oxalis Pes-Caprae L.), G R W Meadly

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

DURING winter and spring, the yellow colouration of paddocks is not always due to the flowers of the widely distributed Capeweed.

In some districts, particularly in the Avon Valley, the yellow-flowered soursob (Oxalis pes-caprae L.), has become firmly established.

The genus Oxalis contains 800 or more different species, the two main natural centres of distribution being South Africa and tropical and extra-tropical South America.

Afghan Thistle (Solanum Hystrix R. Br.), G R W Meadly

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

DURING the summer months it is usual to receive many specimens of a prickly plant with blue flowers similar to those of a potato. It is commonly known as Afghan Thistle or Prickly Potato Weed.

This plant is not a thistle, although it has the prickly foliage characteristic of many members of that group. The botanical name is Solanum hystrix which places it in the same family as the tomato, potato and tobacco.

Relatives also include weeds such as the thornapples, black nightshade and apple of Sodom.

The name Prickly Potato Weed, although somewhat unwieldy is therefore more appropriate than …

Rice Stem Borers At The Kimberley Research Station, L E. Koch

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

STEM boring caterpillars have severely damaged rice crops at the Kimberley Research Station, near Wyndham, and studies have been made on the biology, abundance, and control of these insects.

The In Vitro Culture Of Embryos, Ovules And Ovaries Of Pisum Sativum, Wolfgang Koch, A. J. Linck

Journal of the Minnesota Academy of Science

No abstract provided.

What's Wrong With That Plant?, Department Of Agriculture, Western Australia

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

EACH year several thousand inquiries are received from people who want to know "What's wrong with that plant?" The plants range from common fruit, vegeable and pasture plants to rare ornamentals.

In most cases, the inquiries can be answered satisfactorily by Departmental officers who specialise in the study of various plant troubles.

Ligneous Flora On Contrasting Sites At Longpool, Pope County, Arkansas, Lowell A. Logan

Journal of the Arkansas Academy of Science

No abstract provided.

The Fruit Industry In Other Lands. 3. The United States Of America, Frank Melville

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

MY visit to the United States extended over a period of ten weeks and in this time fruit areas in New York State, Washington State and California were seen.

In addition, certain other activities were covered in other centres. Contact with Research and Extension personnel was made.

The Geraldton Strain Of Subterranean Clover, A J. Millington

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

THE cereal-growing areas of Western Australia form a narrow triangle extending about 700 miles from north to south, gradually increasing in width towards the south to about 150 miles.

Studies In The Mulga Pastoral Zone. 1. The Grazing Of Wandarrie Grass Associations, D G. Wilcox

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

THE establishment of the Wiluna office of the North-West Branch marked the commencement of a series of investigations into the pastures of the mulga zone.

Unlike the agricultural areas where a fund of knowledge exists on the growth habits of the pastures, the pastures of this area were completely unknown.

The preliminary investigations had to be aimed at forming an understanding of the reactions of the various plants to rain, to temperature and seasonal conditions and to grazing in an area of extremely low rainfall reliability.

The Budding Of Fruit Trees, T F. Herlihy

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

A LTHOUGH the principles of budding and grafting are basically the same—that is, t h e success depends upon the close contact of the cambium layers of both stock and scion—the operations are performed at different times of the year.

Comparison Of Vegetation Of Kansas-Nebraska Drift-Loess Hills And Loess Plains, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

The western edge of True Prairie gives way very gradually on the Loess Plains south of the Platte River to Mixed Prairie of the Great Plains. North of the Platte a similar transition occurs in the valleys and on the slopes of the Loess Hills. But in northern Kansas the True Prairie of the Kansas-Nebraska Drift-Loess Hills is definitely separated by the Flint Hills Region from its western edge on the Kansas-Nebraska Loess Plains. In this study the vegetation, soils, and other environmental factors of the two areas are described and compared.

Some Aspects Of Regeneration Silviculture In Spruce-Aspen Stands In Alberta, L. A. Smithers

Aspen Bibliography

Surveys of spruce-aspen stands in Northern Alberta have shown that natural regeneration of white spruce is generally a failure on areas which have been logged but not burned (Candy 1951).

The Effect Of Hydrogen Fluoride On Light And Dark Products Of Carbon Dioxide Fixation In Plants, Cleon W. Ross

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Damage to vegetation caused by fluoride compounds has been reported for a large number of plant species. In recent years toxicity to plants caused by atmospheric fluorides has been the subject of studies by a number of laboratories. These studies have been primarily concerned with determining the extent of injury caused by fluorides, describing the symptoms which occur and attempting to correlate them with the amounts of the element in the tissue and with some environmental factors. Thomas (1951) has given a general review of these subjects. Attempts have been made to control fluoride damage by spraying the leaves with …

An Evaluation Of The Salt Tolerance Of Selected Clones Of Agropyron Elongatum, Jordan G. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Salt-affected soils make up much of the bottom-lands of the arid and semiarid areas of the western United States and are especially prevalent in irrigated regions. Such soils require special remedial measures, management practices, and salt tolerant crops if they are to have economic value.

Bulletin No. 11: A Roadside Crisis: The Use And Abuse Of Herbicides, Richard H. Goodwin, William A. Niering

Bulletins

A proposed program for use of herbicides on town roads, to avoid present destructive practices. 13 pp.

Structural Organization Of Forest Ecosystems, Egolfs V. Bakuzis

Journal of the Minnesota Academy of Science

No abstract provided.

Hybridization And Speciation In The Pacific Coast Irises, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Growth Of Alberta White Spruce After Release From Aspen Competition, L. A. Smithers, G Ontkean

Aspen Bibliography

At the present time spruce sawtimber is the most important single commodity produced from the forests of Alberta.

End Matter, Vol. 1 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Zoology Of The Upper Colorado River Basin: 1. The Biotic Communities, C. Lynn Hayward, D Elden Beck, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 1 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Bulletin No. 10: The Connecticut Arboretum, Richard H. Goodwin, William A. Niering, Fleur A. Grandjouan, Robert Fulton Logan

Bulletins

An annotated list with seasonal records and an account of the breeding bird census program. 24 pp.

Native Grassland Of Southwestern Iowa, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

Studies of the prairie by the writer and Fitzpatrick during 1922-33 were both extensive and intensive. They were extensive in that they included an area of 60,000 sq. mi. in western Iowa, eastern Nebraska and portions of the four adjoining states. They were intensive in that a record of the kinds and distribution of grasses, the abundance and relative importance of forbs, and other pertinent data were ascertained and recorded separately for each of 135 selected areas. Since most of these prairies were examined two or more times each growing season, and many repeatedly during a five-year period, a clear, …

A Distributional And Taxonomic Study Of Ratibida Columnifera Var. Columnifera, Ratiba Columnifera Var. Pucherrima, And Their Hybrids In New Mexico, Walter W. Marshall

Biology ETDs

The classification and distribution of Ratibida columnifera var. columnifera Woot. and Standl. and R. columnifera var. pulcherrima (DC.) Woot. and Standl. are complex. Some floras list R. columnifera var. pulcherrima as a purple colored form or variety of the species while other authors refer to this taxon as a separate species of Ratibida. The purpose of this study is to clarify the taxonomic status of the two forms by determining and differences in morphology, distribution, taxonomy, and ecology.

An attempt has been made to determine the route by which R. columnifera columnifera and R. columnifera pulcherrima were distributed. After this …

Use Of The Antibiotics, Streptomycin And Terramycin, As Growth Stimulants For Orchid Seedlings, Margaret W. O'Neill

Biology ETDs

Antibiotics first came to the public's attention in 1945, when penicillin and streptomycin were released by the United States government to fight human diseases. Later, other antibiotics were released and experimental work was done on control of plant and animal diseases. By 1948 plant pathologists found that certain plant diseases such as walnut blight, tomato and pepper bacterial spot, soft rot, cucumber, downy mildew, chrysanthemum bacterial wilt, and lilac bacterial blight could be controlled by antibiotics.

The Effect Of Certain Fluoride Sprays In The Production Of Soft Suture On Peaches, N. V. Narayanamoorthy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Pollution of the atmosphere and its potential deleterious effects on health, industry, agriculture and natural resources are causing grave concern in many parts of the world. In the past century there has developed in the fields embraced by physical and biological sciences a considerable knowledge of theoretical and applied information, serving as a versatile tool in combating such problems. Air pollution problems seem to have gained much attention with the rapid development of various industries in major parts of the world. Rural and urban areas adjoining these industrial locales are confronted with the dangerous overall problems of air pollution. Evidently, …