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Perennial Pasture Measures Up, D A. Nicholas

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

In a trial at Manjimup, a pasture based on the perennial grass, Currie cocksfoot, gave substantially more production than a comparable annual pasture.

More Lambs By Mating Weaners, R J. Suiter

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

Farmers can increase sheep numbers by mating ewe weaners. Trials have shoen that this does not affect the later performance of these ewes.

A New Tissue Test For Accurate Diagnosis Of Copper Deficiency In Cereals, J W. Gartrell, A. D. Robson, J. F. Loneragan

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

Copper deficiency in ceereals can now be accurately diagnosed using tissue analysis.

The Place For Annual Brome Grass, G W. Anderson

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

Grasses in the anual pastures of southern Australia are particularly important early in the growing season.

The main grass sown, has been annual rygrass, but concerns are emerging with 'annual ryegrass toxicity' and and 'in crop' competition.

This work looks at the role of annual brome grass in pastures.

Extracellular Macromolecules In Regenerating Sabellids: A Histochemical Study, Michael R. Bigelow

MUSC Theses and Dissertations

Regenerating sabellid polychaetes were histochemically studied with regard to the synthesis and deposition of glycosaminoglycans (GAG) and collagen. Both of these types of macromolecules are known to be actively involved in cell migrations and differentiations of several vertebrate systems. The purpose of this study was to investigate whether or not these extracellular materials might be similarly involved in invertebrate systems. Results demonstrate for the first time that these same extracellular materials, GAG and collagen, actively participate during invertebrate development. Production of hyaluronic acid is shown to accompany mesenchymal migration and blastema formation. Deposition of sulfated GAG collagen in the form …

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s Comments [p] 2
Hessian Flies [p] 3
Farm Consumers [p] 6
Muskies [p] 11
Pine Needle Abortion [p] 14
A New Cottage Cheese [p] 16
Sunflowers [p] 19
Lambing on Schedule [p] 22

Aspen Forest (50-Year), Connie J. Pearson, John R. Probst

Aspen Bibliography

No abstract provided.

Effect Of Traumatic Injury On Sensitivity To Insulin, Karl M. Nelson

Dissertations

No abstract provided.

Patterns Of Suspended Particle Transport In A Mississippi Tidal Marsh System, Courtney T. Hackney, Armando A. De La Cruz

Gulf and Caribbean Research

The flux of suspended particulate organic detritus (POD) and suspended inorganic detritus (PID) was studied during ten diurnal tidal periods (24-hour) and three semidiurnal tidal periods (12-hour) between May 1975 and April 1976. The concentration of POD ranged from 1.50 to 19.79 mg/l, while the PID ranged from 3.20 to 99.61 mg/l. There was a net export of POD during four of 13 tidal periods and a net export of PID during five tidal periods. There was a total net movement of 39.32 and 292.51 kg of POD and PID, respectively, into the marsh. On an annual basis, this is …

An Annotated Key To The Mysidacea Of The North Central Gulf Of Mexico, Kenneth C. Stuck, Harriet M. Perry, Richard W. Heard

Gulf and Caribbean Research

An annotated key is provided to 17 species in 11 genera of the order Mysidacea from the north central Gulf of Mexico. All species are illustrated. The occurrence of Bowmaniella dissimilis is reviewed in light of Holmquist’s (1975) renaming of E. dissimilis sensu Brattegard (1970). Reports of several species of Metamysidopsis are discussed. The possible hybridization of two species of Taphromysis is considered.

Marine Fishes Of Panama As Related To The Canal, Gordon Gunter

Gulf and Caribbean Research

Recent papers by Eskinazi, compared to studies made on the Texas and Louisiana coasts 35 to 45 years ago and on the south Atlantic coast 15 years ago, show remarkable similarities of the estuarine fishes of northeastern Brazil and the northern Gulf of Mexico. Forty-five of 48 families of the two areas are in common and about 35% of the species are in common. On the west coast even greater correspondence might be expected between fishes of Peru and southern California, were it not for the restriction of tropical fishes by the Humboldt and California currents.

When the lithospheric plate …

Adaptation Of A Brown Water Culture Technique To The Mass Culture Of The Copepod Acartia Tonsa, John Ogle

Gulf and Caribbean Research

The use of bay water, filtered to 5 microns, was found to be sufficiently nutritious to sustain an average of 232,000 adult Acartia tonsa per m³. Copepods survived up to 24 days as adults and produced up to 75 nauplii per adult. Nauplii could be sieved to produce copepods of known age or known parentage. Survival of nauplii to adults ranged from 15 to 88%. Culture water varied from 6 to 28^oC in temperature, and from 1 to 26 ppt in salinity.

Diet Of The Periwinkle Littorina Irrorata In A Louisiana Salt Marsh, Steve K. Alexander

Gulf and Caribbean Research

The diet of the periwinkle Littorina irrorata was examined. The food substrate utilized most frequently in the field was dead Spartina alterniflora. The primary component of the stomach and feces was vascular plant particles. Plant particles, even though a major portion of the diet, were egested unaltered in feces. Other food substrates contributed significantly to the diet. Marsh sediment was utilized by 37% of all snails observed to be feeding, while 4% grazed on live S. alterniflora. Algal mats, present on several occasions during the study, were utilized extensively. Comparison of microbial components in dead S. alterniflora and …

Notes On Sea Beach Ecology. Food Sources On Sandy Beaches And Localized Diatom Blooms Bordering Gulf Beaches, Gordon Gunter

Gulf and Caribbean Research

Food production along sandy beaches is much different from that of rocky beaches. No large algae grow on sand beaches. Small filamentous green algae find footholds upon molluscs, mole crabs, strands of Leptogorgia and logs. Basic food along the sand beach is made up of diatoms, bacteria, unicellular algae and detritus; diatoms are probably the most abundant autotrophic organism; the beach bacteria are largely heterotrophic. Most food on sandy beaches comes from the sea. The sandy shore seems to be barren, but it swarms with plant and animal life. Food production has a seasonal aspect. Food strands more abundantly on …

Factors Affecting The Hatching Success Of Loggerhead Sea Turtle Eggs (Caretta Caretta Caretta), M. Angela Mcgehee

Retrospective Theses and Dissertations

Clutches of eggs wore collected from nesting loggerhead sea turtles (Caretta caretta caretta) on Merritt Island, Florida, during June - August 1977. Of these, 46 clutches were selected for experimentation to determine the extent to which certain factors affect hatching success. Twelve clutches were divided into subsamples which were incubated in sand maintained at 0, 25, 50, 75, and 100% moisture. Another twelve clutches were divided into subsamples and incubated in sand kept moist with the following percentages of seawater: 0 (distilled water), 25, 50, 75, and 100%; subsamples from four other clutches were subjected to the effects of one …

Ec79-1206 Roses, Donald H. Steinegger, Frederick P. Baxendale, John E. Watkins, Amy Greving

University of Nebraska-Lincoln Extension: Historical Materials

Roses are one of the most versatile and exciting plant groups to use in landscape compositions. There are rose cultivars (varieties) adapted for almost any garden site or landscape purpose, including formal beds and perennial borders, arbors, trellises, hedges, ground covers, steep banks, edging, accent, specimen plants, and as patio or tub plants.

The most common rose types are hybrid teas, floribundas, grandifloras, and climbers. More people are becoming familiar with the so-called "old fashioned" or shrub roses. Many of these are well-adapted to Nebraska and to water-conserving landscapes.

Determination Of Strategy For Harvesting Burley Tobacco, Yasuhiko Miyake, Larry G. Wells, George A. Duncan, Jimmie Rankin

Biosystems and Agricultural Engineering Faculty Publications

The decision-making process associated with the scheduling of burley tobacco harvesting operations was formulated as a multi-stage decision process, and solved using a procedure called dynamic programming. The solution of a stochastic dynamic programming model provides a set of optimal decision rules, that is, a strategy. When certain user-specified parameters are provided, the decision model provides information concerning the optimal date to start harvesting, the optimal number of hours to harvest on each day, the optimal date to introduce hired labor, and the optimal number of workers which should be hired.

The solution of the dynamic programming model makes it …

Phytosociology Of Pavement Plains In The San Bernardino Mountains, Jeanine A. Derby, Ruth C. Wilson

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Wheat Potential Yield Trials - 79ka17 D. Hall, Beaufort River - 79wh32 Wongan Hills Research Station, R N. Weir, D Tennant, A. G. P. Brown, M. W. Perry

Experimental Summaries - Plant Research

COMMENTS 1. No insect problems experienced and broadleaf weeds effectively controlled by spraying. Septoria· leaf spot incidence insufficient to affect yields. 2. Little effect of time of planting on either total dry matter or grain yield. Crop received about 70% of the average May-October rainfall with a very dry September-October. Perhaps the distribution of rainfall allowed a similar pattern of water use, and total water use by each planting time. 3. There is probably a significant effect of Nitrogen regime on grain yield. Osmocote (N3) consistently yielded more than either single (N1) or repeated (N2) dressings of Agran 34:0. The …

Iowa Academy Of Science Leadership Directory And Membership Roster, 1979-80, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Board of Directors ... 2
Section Chairs ... 3
Committees ... 6
Past Presidents ... 20
Award of Merit Recipients ... 21
Membership Roster ... 23
Constitution, Article III ... 36

Aerial Stand Volume Table For Plains Cottonwood In Eastern Colorado, Carleton B. Edminster, James R. Getter

Aspen Bibliography

No abstract provided.

Long-Term Changes In Cottonwoods On A Grazed And An Ungrazed Plains Bottomland In Northeastern Colorado, Glenn L. Crouch

Aspen Bibliography

No abstract provided.

Fire-Decay: Interactive Roles Regulating Wood Accumulation And Soil Development In The Northern Rocky Mountains, A. E. Harvey, M. J. Larsen, M. F. Jurgensen

Aspen Bibliography

Decay and fire play interactive roles in recycling wood and other organic materials in forest ecosystems, and contribute to the development of high quality soils in the Northern Rocky Mountains. Decayed wood, charcoal, and other decomposed organic matter are the principal media for ectomycorrhizal and nonsymbiotic nitrogen fixing microbes. The activities of these microbes are critical to the growth of forest trees. The balance between decay and fire, as it affects the amount, distribution, and type of organic matter, controls the ability of forest soils to support the growth of trees.

Estimating The Volume Of Hardwood Crowns, Stems, And The Total Tree, Douglas R. Phillips, Noel D. Cost

Aspen Bibliography

No abstract provided.

Preliminary Classification For The Coniferous Forest And Woodland Series Of Arizona And New Mexico, Earle F. Layser, Gilbert H. Schubert

Aspen Bibliography

The vegetation of southwestern United States, because of this geographic area's climatic patterns and extreme ranges in topographic relief, is complex and diverse.

Equations Predicting Primary Productivity (Biomass) Of Trees, Shrubs And Lesser Vegetation Based On Current Literature, W. Stanek, D. State

Aspen Bibliography

No abstract provided.

Feeding Preference Of Penned White-Tailed Deer For Hybrid Popular Clones, Richard L. Verch

Aspen Bibliography

No abstract provided.

Winter Diets Of Elk And Deer In The Blue Mountains, Oregon, Jon Skovlin, Martin Vavra

Aspen Bibliography

No abstract provided.

Elk-Aspen Relationships On A Prescribed Burn, Joseph V. Basile

Aspen Bibliography

No abstract provided.

Value Of High Fiber Diets For Grand Swine, D. S. Pollmann, D. M. Danielson, E. R. Peo, Jr.

Department of Animal Science: Faculty Publications

An experiment was conducted to determine the effect of roughages on the utilization of dietary nitrogen, energy and fiber by gravid swine. Water consumption, backfat depletion, pregnancy weight gain, and reproductive performance were used as response criteria.