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The Control Of Spore Germination In Anemia Phyllitidis (L.) Swartz And Other Ferns, Eric S. Weinberg

Student Theses and Dissertations

Many fern spores require light for germination. In one family of ferns, the Schizaeaceae, the gibberellins overcome this light requirement and induce dark-germination. Fern gametophytes produce antheridium-inducing substances. The Anemia substance, antheridogen-B, is demonstrated to induce germination in two genera of the Schizaeaceae, Anemia and Mohria. The Pteridium substance, antheridogen-A, stimulates germination of at least ten species in two families of ferns, but is not active on species of the Schizaeaceae. In almost all tested cases the antheridogens are active in inducing germination in the same species on which they also induce antheridia. The hormone-induced dark-germination in Anemia phyllitidis (L.) …

Recommended Cereal Varieties : 1969, H M. Fisher, J. T. Reeves, J. A. Parish

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

Cereal varieties widely recommended for growing in 1969 are Gamenya and Falcon wheats, Dampier and Beecher barleys and Swan oats.

Other varieties include the new wheat Darkan, which is recommended only for the higher rainfall areas, the rust resistant wheats Mengavi and Gamut, and Irwin oats for late sowing in northeastern districts.

Pasture Improvement In South Western Australia, J W. Malcolm

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

"There is no doubt that Australia's enhanced prosperity in the last 30 years has been dependent in no small measure on the use of legume-based pastures." E. M. Hutron, June, 1968. *

THE LAST 30 years have seen an increased interest in pasture improvement which has transformed much of Western Australia. Large areas have been sown to new and improved pasture species—as a result productivity of both livestock and cereal enterprises has risen.

Weed Control In Linseed, J G. Paterson

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

In 1967, almost 7,000 acres of linseed were planted in Western Australia. The area increased to more than 25,000 acres in 1968 and it is expected that some 40,000 to 50,000 acres will be planted in 1969.

FOR MANY years linseed has been a comparatively unimportant crop, recently been highlighted both as a "cleaning" and as a "cash" crop. Its value has

Weed Control In Pastures : A Practical Approach For Sheep Areas, Geoffrey A. Pearce

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

IN the past, chemical treatments for the control of weeds in pastures have been costly and severe on pasture, and have had to be repeated over a number of years. The method outlined in this article overcomes nearly all these disadvantages.

The Control Of Weeds In Cereals, Geoffrey A. Pearce

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

PRACTICALLY all broadleaved weeds found in cereals can now be killed with herbicides and with most, the farmer has a choice of chemicals.

Two more new products are now available and these have several advantages over other herbicides.

Chemical Ploughing, Geoffrey A. Pearce

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

PROGRESS in the field of chemical weed control has been spectacular in recent years. One field that is attracting interest is the idea of replacing cultivation with chemical sprays.

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.

Control Of Clover Infertility In Sheep, H G. Neil, H. E. Fels, C. M. Francis

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

A summary of practices recommended for the control of infertility caused by subterranean clover in West Australian sheep.

PROLONGED grazing of green subterranean clover pastures often reduces ewe fertility. In more extreme cases, obvious signs of clover disease occur.

Wren Wheat Unimpressive In West Australian Trials, Department Of Agriculture, Western Australia

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

WREN WHEAT, the subject of current controversy in the Eastern States, has been tested in trials in Western Australia and the results have indicated that it is not likely to yield well in this State.

Wildflowers Of The Geraldton District, E M. Bennett

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

THE wildflowers of Western Australia which have aroused such interest throughout the world are found largely in the south western corner of the State.

Within this area, and indeed in the drier areas also, certain districts are richer than others.

One example of this concentration of wildflowers occurs to the north and east of Geraldton.

Lupins In Western Australia. 2. Cultivation Methods, John Sylvester Gladstones

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

While lupins are by and large plants of lighter and less fertile soils, important differences exist among them in their soil preferences.

There may also be some differences in climatic requirements. Present knowledge of these differences is summarized in the Table below.

The Long Term Effects Of Frequent Cropping, Stanley Thomas Smith

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

AGRICULTURALLY speaking, few Western Australian soils are more than 50 years old. We have the responsibility of preserving them for farming—not for one man's lifetime, but for centuries.

The aim of this article is to demonstrate that cropping and cultural practices do have some effects on the soil, and that these effects should be considered when choosing a farm rotation.

Poison Plants Of Western Australia : The Toxic Species Of The Genera Gastrolobium And Oxylobium : Berry Poison (Gastrolobium Parvifolium Benth.) Spike Poison (Gastrolobium Glaucum C.A. Gardn.) Hook-Point Poison (Gastrolobium Hamulosum Meissn.) Scale-Leaf Poison (Gastrolobium Appressum C.A. Gardn.), T E H Aplin

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

This article deals with four species which, apart from spike poison, may be distinguished by their small leaf size. Scale-leaf poison is found in the Irwin district, and the other three are present in the Avon district.

Studies In Digenetic Trematodes Of Marine Fishes From Monterey And Tomales Bays, California, Eric Chapa

University of the Pacific Theses and Dissertations

The present paper deals with the digenetic trematodes collected by the author from fishes of Tomales Bay (including Dillon Beach) during the summers of 1967 and 1968. Also included in this study are several trematodes collected by the late Alden E. Noble (hereinafter referred to as the “Noble Collection”) at Hopkins Marine Station, Monterey Bay in 1936 and 1937. Unfortunately the majority of the slides in the “Noble Collection” have been lost with the exception of specimens of the Family Meniuridae and a few representatives of other digenea that were in the personal collection of Dr. F.M. Nahhas. A few …

Some Corporations That Own Farm And Ranch Land In South Dakota, Russell L. Berry

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

Concern has developed about large out-of-state corporations that own agricultural land in South Dakota. Fears that such corporations may destroy family farms are often expressed. As a result legislation has been proposed which would prohibit such corporations from farming unless 51 percent of stock is owned by South Dakotans. Do present out-of-state corporations justify such fears? A survey recently made indicates that most out-of-state corporations lease their land to independent farmers. Those few that directly manage their land are not much if any different from the home-grown kind. Most appear to be held and operated by families. The survey was …

South Dakota Farm And Home Research, Agricultural Experiment Station, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Contents:
Cooperators Provide Many Facilitates for Statewide Agricultural Research [p] 2 From irrigation: $97 Million Annual Impact on Retail, Service Trade [p] 3
Sprinkler Irrigation System plus Fertilizer equals FERTIGATION [p] 5
Remote Sensing in South Dakota [p] 9
Returns from Beef Production on Irrigated Pastures vs. Returns with Other Crops [p] 12
Range Sites as Sources for Livestock Water [p] 13
Cost of Marketing Livestock Through Auctions [p] 17
Phosphatic Urinary Calculi [p] 19
Dangerous Tractor Noise…Maybe It’s on the Way Out [p] 24
A New Oat: KOTA [p] 28
A New, Better Barley: PRIMUS II [p] 29
Growers …

Director's Report, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Whole Issue Nebraska Bird Review (January 1969) 37(1)

Nebraska Bird Review

Table of Contents

Barnacle Goose Taken in Nebraska.................... 2

Growth and Calculation of Age in the American Goldfinch.................... 3

1968 Fall Field Day ....................15

Albino Screech Owl ....................16

A New Rhinoceros From The Nebraska Miocene, Lloyd G. Tanner

Bulletin of the University of Nebraska State Museum (1924–2023)

A new species of rhinoceros, Menoceras marslandensis, is here proposed. It is based upon a nearly complete skull from the upper part of the Marsland Formation, Hemingford Group (Miocene), of Box Butte County, Nebraska. The new species was probably derived from Menoceras arikarense (Barbour), collected from the Agate Springs Quarries (Arikaree Group, Harrison Formation) of Sioux County, Nebraska, with which both Diceratherium niobrarensis Peterson and D. cooki Peterson are likely synonymous. From Menoceras arikarense, the presumed ancestral stock, Menoceras marslandensis differs in possessing the following characters: (1) very long, fused but slightly cleft, nasals, with flattened, rugose areas …

Engineering For Higher Yields, Yoshiaki Ishizuka

Department of Agronomy and Horticulture: Faculty Publications

It was difficult for me to understand the meaning of "engineering" as used in the title of my speech. I asked Dr. Haskins who told me that the term engineering is used here because one traditional role of the engineer has been the application of scientific principles in the solution of practical problems, and that in this case we want to consider the application of biological principles in both past and future increases in crop yield. Accordingly, I intend to express my thoughts on this problem, and to ask your suggestions for obtaining higher and better yields in the future. …

Mechanisms Of Translocation Of Plant Metabolites, Orlin Biddulph

Department of Agronomy and Horticulture: Faculty Publications

The mechanism of translocation has been discussed since the latter part of the 19th Century, when DeVries, in 1885, proposed protoplasmic streaming as the mechanism. Since that time O. F. Curtis, beginning about 1920, and more recently Thaine (1961) and Canny and Phillips (1963) have become interested in this approach to the problem. In the meantime Munch, in 1930, proposed a pressure flow mechanism based on a turgor pressure gradient in the phloem between metabolite supplying and metabolite consuming areas. These two mechanisms, and others, are fully discussed in Swanson (1959), so the present paper will deal with a compilation …

A Supplement To The Floras Of Santa Catalina And San Clemente Islands, Los Angeles County, California, Robert F. Thorne

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Studies In Stylidiaceae: New Taxa, Field Observations, Evolutionary Tendencies, Sherwin Carlquist

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Fertility Build Up Under Northern Wheatbelt Pastures, M L. Poole

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

Experiments on two farmers' properties demonstrated that legume pastures increase the fertility of northern wheatbelt soils.

Crops on legume pastures had higher yields than crops on volunteer pasture.

The experiments also indicated the most productive legume species for each situation and demonstrated that nitrogen added by legumes has a residual effect in the soil.

Saltland Pastures, C V. Malcolm

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

FOLLOWING THE DEVELOPMENT of Agriculture in Western Australia considerable areas of highly productive land have become salt affected to the degree that normal crops and pastures cannot be grown.*

However, species and establishment methods are available which can bring at least some of this land back into production.

The Effects Of Some Silvicultural And Soil Treatments On Aspen (Populus Tremuloides Michx.) Reproduction In Northern Utah, Calvin O. Baker

Aspen Bibliography

No abstract provided.

The Effect Of Cattle, Sheep, And Other Factors On Aspen (Populus Tremuloides) Reproduction After Clear-Cut Logging In Southern Utah, Paul A. Lucas

Aspen Bibliography

No abstract provided.

Populus: A Bibliography Of World Literature, 1854-1963, R.E. Farmer Jr., J.S. Mcknight

Aspen Bibliography

No abstract provided.

Addition To The List Of Spiders Collected In Clark County, Arkansas, Peggy Rae Dorris

Journal of the Arkansas Academy of Science

No abstract provided.