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Bulletin 3992 - Nitrogenous Fertilisers For Cereal Production, M. G. Mason

Bulletins - 3000 - 3999

Because fertiliser prices continue to rise, it is becoming increasingly important to understand what affects the response to fertilisers by crops.

Among the many factors influencing crop response to nitrogen applications, the most important are the season, soil type, paddock history, time of application and source of nitrogen. Before deciding whether to use nitrogen on a cereal crop, which source to use and at what rate, the farmer needs some understanding of how these factors work.

Selection For Yellow Clover Aphid And Pea Aphid Resistance In Red Clover, H. J. Gorz, G. R. Manglitz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Most red clover (Trifolium pratense L.) cultivars are susceptible to attack by the yellow clover aphid (Therioaphis trifolii Monell) and the pea aphid (Acyrthosiphon pisum Harris). Starting with 27 yellow clover aphid-resistant plants selected from a wide diversity of germplasm, phenotypic recurrent selection was used to improve resistance to the two aphids. Through five cycles of testing and selection for yellow clover aphid resistance and three such cycles for pea aphid resistance, a synthetic, 'N-2', was developed that had a high level of resistance to both aphids.

The Prairie Naturalist Vol. 11, No. 1. March, 1979

The Prairie Naturalist

ORIN ALVA STEVENS, A PRAIRIE NATURALIST ▪ G. Monson

FIRST RECORD OF LONG-TAILED JAEGER FOR NORTH DAKOTA ▪ T. Gatz and D. Treasure

NEW RECORDS OF THE DWARF SHREW (SOREX NANUS) IN SOUTH DAKOTA ▪ R. J. Cinq-Mars, R. S. Hoffmann and J. K. Jones, Jr.

THE ETHYLENE FROM BURNING LIGNITE AS A PROBABLE CAUSE OF COLUMNARITY IN NORTH DAKOTA JUNIPERS ▪ J. M. Murphy and D. J. Holden

CAMOUFLAGED COYOTE DEN ENTRANCES ▪ D. P. Althoff

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1978 ▪ R.N. Randall

NOTES

An Upland Nest of the Virginia Rail in North …

Species With Extrafloral Nectaries In A Temperate Flora (Nebraska), Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Extrafloral nectaries (EFNs) are glands on a plant, not involved in pollination, that produce solutions containing sugars (and other compounds). Long noted by morphologists, EFNs have recently been observed to be part of ant-plant mutualisms. The function of EFNs appears to be to attract aggressive insects, especially ants, which by disturbing or preying upon herbivores, reduce damage to the plant (Janzen, 1966a,b; Elias and Gelband, 1975; Keeler, 1975, 1977; Bentley, 1976, 1977a,b; Schemske, 1978; Tilman, 1978; Inouye and Taylor, 1979; Pickett ad Clark, 1979). Furthermore, they constitute an unusual plant defense against herbivores: at EFNs plants employ ants as a …

In Vitro Experiments On Totipotency Of Dacus Carota, Karl L. Ruser

Journal of the Minnesota Academy of Science

The intent of this project was to induce the totipotency of carrot cells in tissue culture. The information gathered would be applied to work with woody plants. Differentiated cells removed from the root were cultured in vitro using a modified White's medium. Callus was initiated and successfully sub cultured. Roots and the production of chlorophyll have been initiated in the cultures. Because some specialized equipment and facilities for tissue culture were not available at the beginning of the project, it took considerable time to gather and improvise them. A roller tube culture mixer was constructed, using the mechanism from a …

Floristics And Phytosociology Of The Pavement Plains In The San Bernardino Mountains, California, Jeanine A. Derby

Theses Digitization Project

No abstract provided.

The Effects Of Selected Pre-Germination Treatments On Six Species Of Summer And Winter Annual Plants Of The East Mojave Desert, James R. Earsom

Theses Digitization Project

No abstract provided.

Biochemical Profile Of Apacheria Chiricahuensis (Crossosomataceae), Ron Scogin, Alicia Tatsuno

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Comparative Serology Of A Disjunct Species Group: The Prosopis Juliflora-Prosopis Chilensis Complex, Jean-Pierre Simon

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Phosphorus Sources Trials, J W. Bowden, M Baker

Experimental Summaries - Plant Research

Pasture Trials 76BU1 New land pasture at Yallingupo Sand over laterite. 75N07B New land pasture at Chittering. Grave lo 76MT10 New land pasture at Mount Barker. Gravel. 77MT1 New land pasture at Mount Barkero Methods and particle size. Cropping Trials 76N4 New land - Phosphorus sources on barley - gravel sitee 76LG6 Short history - Phosphorus sources on barley - gravelly sande 76WH9 New land Phosphorus sources on wheat - loamy sands 77M016 - New land - Phosphorus sources on wheat - gravel ~ 3rd crop.

Aspen-Birch Forest, Donald Rakstad, John R. Probst

Aspen Bibliography

No abstract provided.

Aspen Clearcut (8-Year), Donald Rakstad, John R. Probst

Aspen Bibliography

This report includes a breeding-bird census, a list of dominant plant species, and brief physiographic data for a 8-year old aspen clearcut on the Chippewa National Forest, Michigan.

Ryegrass Toxicity Organism Found On Other Grasses, D L. Chatel, J. L. Wise, A. G. Marfleet

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

Yellow slime disease caused by Corynebacterium sp. has recently been found in three grass species.

The diseased grasses were found in the field growing with each other and with affected toxic annual ryegrass.

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.

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.

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

Aspen Bibliography

No abstract provided.

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 …

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.

Variation In Leaf Anatomy In Ten Selected Species Of Carex (Cyperaceae) Representing Three Subgeneric Sections (Bracteosae, Multiflorae, And Squarrosae), Marion Rae Mallory

Theses, Dissertations and Capstones

Leaves of Carex (Cyperaceae) representing three subgeneric sections were collected from wide spread localities and observed for anatomical variation. Among the quantitative characters evaluated were, epidermal cell height, width, and number per unit area, bulliform cell height and width, ai r cavity length, width, and number per unit area, and number of stomata per unit area. some descriptive anatomical characters were leaf and keel shape, air cavity shape, sclerenchyma pattern, vascular bundle location, presence or absence of a hypodermis, nature of the mesophyll, silica body shape and location, presence or absence of epidermal projections, stomatal pattern, and subsidiary cell shape.