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Articles 1 - 30 of 289
Full-Text Articles in Plant Sciences
Northeast Research Station Watertown, South Dakota Annual Progress Report, 1990, Agricultural Experiment Station, Plant Science Department
Northeast Research Station Watertown, South Dakota Annual Progress Report, 1990, Agricultural Experiment Station, Plant Science Department
Agricultural Experiment Station and Research Farm Annual Reports
This is the 1990 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes information on the 1990 crop season, including precipitation data, grain and crop research, breeding, and variety testing, soybean row space study, weed control, crop performance test, 1990 crop yields system productivity from 1985-1990, plant nutrition, soil test and research, estimated soil erosion.
Lupin Logic Number 6, Peter Nelson
Lupin Logic Number 6, Peter Nelson
Lupin Logic
Contents
The lupin breeders of Western Australia
Lupin varieties for 1991 by John Gladstones
Prospects for the next few years
Cucumber Mosaic Virus (CMV) testing
Prospects brighten for Koreanmarket by Rory Coffey, Grain Pool of W.A.
1989/90 Pool payments
Southeast South Dakota Experiment Farm Annual Progress Report, 1990, Agricultural Experiment Station
Southeast South Dakota Experiment Farm Annual Progress Report, 1990, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This thirtieth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.
West River Agricultural Research And Extension Center Progress Report, 1990, Agricultural Experiment Station
West River Agricultural Research And Extension Center Progress Report, 1990, Agricultural Experiment Station
Agricultural Experiment Station and Research Farm Annual Reports
This is the 1990 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary for all west river counties involved in research, small grain variety trials and demonstrations, grain crops variety trials, oilseed crops variety testing, and demonstrations, management, tillage and cultural practices, weed control research projects and disease control.
Horticultural Capability Study Of Soils Adjacent To Plantations At Carnarvon, Western Australia, M R. Wells, J A. Bessell-Browne
Horticultural Capability Study Of Soils Adjacent To Plantations At Carnarvon, Western Australia, M R. Wells, J A. Bessell-Browne
Resource management technical reports
A detailed soil survey and horticultural capability assessment was undertaken over 1,804 ha of land adjacent to existing plantations on levees of the Gascoyne River near Carnarvon. The study provides mapped land resource data and advice in relation to land management and the possibility of further land release for horticulture. In the assessment of horticultural capability primary consideration has been given to the risk of erosion during flood events, to salinity, and to soil drainage conditions.
The Prairie Naturalist Volume 22, No. 4. December 1990
The Prairie Naturalist Volume 22, No. 4. December 1990
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
CONTENTS
DISTRIBUTION AND STATUS OF GREATER PRAIRIE-CHICKENS IN COLORADO ▪ B. F. Van Sant and C. E. Braun
IMPORTANCE OF AN OLD, MULTIPLE-USE RESERVOIR TO MIGRATING AND WINTERING DABBLING DUCKS ▪ D. M. Leslie, Jr. , and W. J. Stancill
SIMILARITY OF MALLARD NESTING ON A SOUTH DAKOTA ISLAND BETWEEN 1967-68 and 1985-87 ▪ S. G. Simpson and D. Limmer
BOBCAT HABITAT USE IN SOUTHEASTERN MONTANA DURING PERIODS OF HIGH AND LOW LAGOMORPH ABUNDANCE ▪ B. J. Giddings, G. L. Risdahl, and L. R. Irby …
The Western Kentucky University Horticultural Gardens: A Design & Implementation Plan, Catharine Schriver
The Western Kentucky University Horticultural Gardens: A Design & Implementation Plan, Catharine Schriver
Masters Theses & Specialist Projects
The purpose of this thesis was to design a master landscape plan rnd serve as a preliminary planning tool for the development of Horticulture Gardens at Western Kentucky University. The planning process involved the development of a mission statement and goals for the gardens, analysis of the site, and design of a landscape plan for the proposed six acre Horticultural Gardens located at the WKU farm. Other areas related to the Garden's development explored in the thesis include: an outline of course learning objectives that could be achieved through learning activities conducted at the Horticultural Gardens, an examination of ways …
Sand Bluestem And Prairie Sandreed Establishment, Robert A. Masters, Kenneth P. Vogel, Patrick E. Reece, Dennis Bauer
Sand Bluestem And Prairie Sandreed Establishment, Robert A. Masters, Kenneth P. Vogel, Patrick E. Reece, Dennis Bauer
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fern,] and prairie sandreed (Calamovitfa longifolia Hook.) are native warm-season grasses used to revegetate cropland and degraded rangeland on highly erodible sandy soils in the central Great Plains. The objectives of this study were to compare establishment success of the 2 grasses and to determine if application of atrazine at time of planting enhanced grass establishment. Eight plantings, including 'Goldstrike' and 'Garden' sand bluestem and 'Goshen' and 'Pronghorn' prairie sandreed, were made from 1985 to 1987 at locations in eastern, north central, and western Nebraska. Three plantings were established under irrigation …
Lupin Logic Number 5, Peter Nelson
Lupin Logic Number 5, Peter Nelson
Lupin Logic
Contents
The 1991 lupincrop starts now with high quality seed
- Why test the seed
- Are farmers using the tests?
- Sample size and cost
Currency fluctuations - efffect on equity by Trevor Lovelle, Grain Pool of WA
Defoliation Effects On Production And Morphological Development Of Little Bluestem, J. J. Mullahey, Lowell E. Moser, Steven S. Waller
Defoliation Effects On Production And Morphological Development Of Little Bluestem, J. J. Mullahey, Lowell E. Moser, Steven S. Waller
Department of Agronomy and Horticulture: Faculty Publications
Response of key warm-season grasses to time, frequency, and duration of defoliation is needed to develop grazing systems for the Nebraska Sandhills. A 3- year (1986 to 1988) study was conducted on a Valentine fine sand (mixed, mesic Typic Ustipsamments) at the Gudmundsen Sandhills Laboratory near Whitman, Nebraska, to determine the effect of defoliation on little bluestem [Schizachyrium scoparium (Michx.) Nash]. Treatments were: 1 defoliation (to 7 cm) on 10 June, 10 July, or 10 Aug.; 2 defoliations on 10 June and 10 Aug.; and 3 defoliations on 10 June, 10 July, and 10 Aug. Control plants were harvested …
Elliptical Combing Motion For Harvesting Bell Peppers, J. H. Wilhoit, George A. Duncan, Larry G. Wells
Elliptical Combing Motion For Harvesting Bell Peppers, J. H. Wilhoit, George A. Duncan, Larry G. Wells
Biosystems and Agricultural Engineering Faculty Publications
A new concept for mechanically harvesting bell peppers, intended specifically for multiple-pass harvesting, utilized spaced horizontal fingers combing vertically upward through plant foliage in an elliptical path alternating from both sides of the row. An apparatus based on this concept was designed and built, and harvest tests were conducted to determine the effect of two main machine operating parameters, vertical picking speed and disk angle. Harvesting performance was evaluated in terms of harvest efficiency, fruit damage, and plant damage as it related to multiple-pass harvesting. Fruit removal, both harvestable size and immature, increased significantly as vertical picking speed increased. Branch …
Arrow Arum, Duck Corn Peltandra Virginica (L.) Kunth, Gene Silberhorn
Arrow Arum, Duck Corn Peltandra Virginica (L.) Kunth, Gene Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.
Acer Ginnala Maxim., John E. Ebinger
Lupin Logic Number 4, Peter Nelson
Lupin Logic Number 4, Peter Nelson
Lupin Logic
Contents
Lupin harvesting
- Seed for 1991
- Green radish
- Calculating harvest losses
Deacreasing lupin harvesting losses by Edward Blanchard
- Cutterbar modifications
- Improving crop flow
Stubble survey by Wes Horwood
Seminar
Production and price outlook -1990
Food for thought
Notes On Neotropical Amanoa (Euphorbiaceae), W. John Hayden
Notes On Neotropical Amanoa (Euphorbiaceae), W. John Hayden
Biology Faculty Publications
Lectotypes are designated for Amanoa caribaea Krug & Urban and A. guianensis Aublet; presumed syntypes of the latter taxon are shown to be heterogeneous by inclusion of a previously unrecognized species. Four new species of Amanoa are described: A. congesta from French Guiana and northeastern Brazil; A. gracillima from Manaus, Brazil; A. nanayensis from Amazonian Peru and adjacent Colombia and Brazil; and A. neglecta from French Guiana and Surinam. Amanoa sinuosa is proposed as a new name for the later homonym A. robusta Leal. A key to the 13 neotropical species is presented.
Risk-Based Oversight Of Experiments In The Environment, Henry I. Miller, Robert H. Burris, Anne K. Vidaver, Nelson A. Wivel
Risk-Based Oversight Of Experiments In The Environment, Henry I. Miller, Robert H. Burris, Anne K. Vidaver, Nelson A. Wivel
Department of Plant Pathology: Faculty Publications
The new biology has come of age. Basic research in fields ranging from immunology to plant biology has been transformed so as to be almost unrecognizable to those whose biology education ended before 1970. The spillover into commercial development likewise has been remarkable. Hardly a week passes without news of some new advance in an area such as therapeutics, vaccines, or plants and animals for food, feed, or fiber. These uses of biotechnology in "contained" laboratories, pilot plants, greenhouses, and production facilities have engendered little controversy. The National Institutes of Health Guidelines for Research Involving Recombinant DNA have exempted from …
Root Biomass And Production In Four Communities Within The Great Dismal Swamp, Susan West Powell
Root Biomass And Production In Four Communities Within The Great Dismal Swamp, Susan West Powell
Biological Sciences Theses & Dissertations
A biomass difference approach was used to measure biomass and production over eleven months in four different communities within the Great Dismal Swamp. On all sites, fine roots were the moat dynamic root component. Both biomass and production were highest on the mixed hardwood site, the least flooded site, and second highest on the cedar site, the site with the longest duration of saturation. The maple-gum and cypress sites had lower amounts of biomass and rates of production. Environmental parameters that influenced production included frequency and duration of flooding, density of the stand, and soil type.
A second method, an …
Acer Ginnala Maxim., John E. Ebinger
Fraxinus Pennsylvanica Marsh., Marilyn Morris, Scott Simon, Loy R. Phillippe
Fraxinus Pennsylvanica Marsh., Marilyn Morris, Scott Simon, Loy R. Phillippe
Specimens by Name
No abstract provided.
Spiranthes Cernua (L.) Rich., Marilyn Morris, Scott Simon, Loy R. Phillippe
Spiranthes Cernua (L.) Rich., Marilyn Morris, Scott Simon, Loy R. Phillippe
Specimens by Name
No abstract provided.
Ampelopsis Cordata Michx., John E. Ebinger
Acer Ginnala Maxim., John E. Ebinger
Soybean Chlorosis Studies On High Ph Bottomland Soils, E. J. Penas, R. A. Wiese, R. W. Elmore, G. W. Hergert, R. S. Moomaw
Soybean Chlorosis Studies On High Ph Bottomland Soils, E. J. Penas, R. A. Wiese, R. W. Elmore, G. W. Hergert, R. S. Moomaw
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
Soybean varieties are different in tolerance to lime-induced chlorosis. Field trials were conducted to evaluate variety performance on soils where chlorosis in soybeans was a known problem. Thirty-six varieties out of 177 were identified as tolerant to soil conditions that cause chlorosis. Eleven varieties of these 36 were found to have the most consistent yield performance on high pH soils. Tolerant varieties must be planted at adequate densities for best performance. A seeding rate of 13.5 seeds per foot of row, the highest seeding rate employed, did not appear to maximize yield on soils where chlorosis was severe. On some …
The Prairie Naturalist Volume 22, No. 3. September 1990
The Prairie Naturalist Volume 22, No. 3. September 1990
The Prairie Naturalist
Paul B. Kannowski, Editor
Nikki R. Seabloom, Assistant Editor
Douglas H. Johnson, Book Review Editor
CONTENTS
ASSEMBLAGES OF SMALL FISH IN THREE HABITAT TYPES ALONG THE PLATTE RIVER, NEBRASKA ▪ D. T. O'Shea, W. A. Hubert, and S. H. Anderson
SPAWNING HABITAT OF CHANNEL CATFISH IN THE POWDER RIVER SYSTEM, WYOMING-MONTANA D. R. Gerhardt and W. A. Hubert
OCCURRENCE OF AMERICAN WHITE PELICANS ALONG THE PLATTE RIVER, NEBRASKA ▪ J. G. Sidle, C. A. Faanes, and W. G. Jobman
DIET OF CANVASBACKS DURING BREEDING ▪ J. E. Austin, J. R. Serie, and J. H. Noyes
BROOD HABITAT USE OF RIO …
Ermelo Weeping Lovegrass Response To Clipping, Fertilization, And Watering, Robert A. Masters, Carlton Britton
Ermelo Weeping Lovegrass Response To Clipping, Fertilization, And Watering, Robert A. Masters, Carlton Britton
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
A management strategy using short-duration grazing and fertilization was simulated in a study with individual 'Ermelo' weeping lovegrass [Eragrostis curvula (Shrad.)Nees] plants. Influence of 2 levels of clipping [unclipped during the growing season and clipped (C) to 10-cm stubble height each time regrowth reached 40 cm]; fertilizer [unfertilized and 70-34-44 kg N-P-K/ha (F)]; and watering frequency [irrigated to field capacity at 7- (WET) and 14- (DRY) day intervals] on cumulative herbage dry matter yield, crude protein yield, and water-use efficiency, and root mass of individual weeping lovegrass plants grown in soil contained in polyethylene tubes was determined. Clipping combined …
Lupin Logic Number 3, Peter Nelson
Lupin Logic Number 3, Peter Nelson
Lupin Logic
Contents
Heliothis by Kevin Walden
- Life cycle
- Research
- Walden's prediction for 1990
- Monitoring
- When to spray
- Heliothis - what to spray with
Superphosphate - Not just how much, but how much? where? and with what by Ron Jarvis
- Machinery modification
1989/90 Pool payments
Warm-Season Grass Establishment As Affected By Post-Planting Atrazine Application, C. C. Bahler, Lowell E. Moser, T. Griffin, Kenneth P. Vogel
Warm-Season Grass Establishment As Affected By Post-Planting Atrazine Application, C. C. Bahler, Lowell E. Moser, T. Griffin, Kenneth P. Vogel
Department of Agronomy and Horticulture: Faculty Publications
Atrazine [6-chloro-N-ethyl-N’-methylethyl)-1,3,5-triazine-2,4-diamine] provides effective weed control during big bluestem (Andropogon gerardii Vitman) and switchgrass (Panicum virgatrum L.) establishment. However, most other desirable warm-season grasses are susceptible to atrazine injury at establishment. The objective of this study was to determine if atrazine applications after seedling would affect susceptible warm-season grass establishment. Big bluestem, switchgrass, Indiangrass [Sorghastrum nutans (L.) Nash], sideoats grama [Bouteloua curtipendula (Michx.) Torr.], and little bluestem [Schizachyrium scoparium (Michx.) Nash] were needed into greenhouse flats or field plots and 2.2 kg a.i. atrazine/ha applied at 0 (atrazine control), 7, 14, or 21 days after …
Saltmeadow Hay, Spartina Patens (Aiton) Muhl, Gene M. Silberhorn
Saltmeadow Hay, Spartina Patens (Aiton) Muhl, Gene M. Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.
Ampelopsis Cordata Michx., John E. Ebinger
Myrica Cerifera L., John E. Ebinger