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Articles 1 - 30 of 36
Full-Text Articles in Plant Sciences
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
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 …
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.
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
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.
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
Lupin Logic Number 2, Peter Nelson
Lupin Logic Number 2, Peter Nelson
Lupin Logic
Contents
Aphids
- Population increase
- Population decrease
- Aphid species
- Time of attack
- Damage to crop
Stubble handling seeders by Glen Riethmuller
Lupin Marketing by Rory Coffey
- Saudi Arabia
- Japan
- Lupin vs protien by-products
1989/90 Lupin Pool payments
Pesticide Use On Crops In Nebraska - 1987, Maurice Baker, Nancy Peterson, Shripat T. Kamble
Pesticide Use On Crops In Nebraska - 1987, Maurice Baker, Nancy Peterson, Shripat T. Kamble
Historical Research Bulletins of the Nebraska Agricultural Experiment Station
This is the third and most comprehensive study of pesticide use on crops in Nebraska. The first was completed in 1978 and the second one in 1982. The first study indicated that approximately 25 million pounds (11.34 million kg) of active ingredients were used on the major crops in Nebraska. This increased to approximately 30.2 million pounds (13.7 million kg) in 1982. The USDA requires accurate information to meet their responsibilities. Thus, this survey was undertaken to determine: 1) the use of pesticides on crops, pasture and rangeland and 2) to identify pest management practices.
Life History Of Paracantha Gentilis (Diptera: Tephritidae), David H. Headrick, Richard D. Goeden
Life History Of Paracantha Gentilis (Diptera: Tephritidae), David H. Headrick, Richard D. Goeden
Horticulture and Crop Science
The life history of Paracantha gentilis Hering in southern California is described. This stenophagous tephritid reproduces in the capitula of native Cirsium thistles. Courtship and mating behavior are described from field and laboratory observations. Territorial and courtship behavior of males and the morphological characters involved in possible male pheromone emission are described and illustrated, as are the oviposition behavior and reproductive morphology of females. Egg clutch sizes ranged from one to 13 eggs, with a maximum of six clutches per capitulum. Larvae fed gregariously within stage-specific niches. Pupariation occurred in the capitula, from which adults emerged in mid-June through early …
Lupin Logic Number 1, Peter Nelson
Lupin Logic Number 1, Peter Nelson
Lupin Logic
Contents
Welcome to the first issue of Lupin Logic
- What's it all about?
- Your help is needed
- Lupin Logic mailing list
Post-mortem on seeding
Grass weed control
Market outlook: Global: supply/demand
Market development: Human consumption update
Sfa Gardens Newsletter, May 1990, Sfa Gardens, Stephen F. Austin State University
Sfa Gardens Newsletter, May 1990, Sfa Gardens, Stephen F. Austin State University
SFA Gardens Newsletters
No abstract provided.
The Basis Of Browsing Tolerance In Shrubs Of The Intermountain West: Growth Rates And Meristematic Potential, Jackson L. Wandera
The Basis Of Browsing Tolerance In Shrubs Of The Intermountain West: Growth Rates And Meristematic Potential, Jackson L. Wandera
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Relative growth rates (RGRs) and meristematic potential of big sagebrush (Artemisia tridentata, in some experiments ssp. tridentata Nutt. and in other experiments ssp. vaseyana [Rydb] Beetls), bitterbrush (Purshia tridentata [Pursh] DC), serviceberry (Amelanchier alnifolia Nutt.), birchleaf mountain mahogany (Cercocarpus montanus Raf.), curlleaf mountain mahogany (C. ledifolius Nutt.) and big tooth maple (Acer grandidentatum Nutt.) were quantified under both glasshouse and field conditions. The relationships between the RGRs, meristematic potential and regrowth capacity of the shrub species were then determined. Sagebrush exhibited a significantly higher RGR than the other species at both high and low …
Reconnaissance Investigation Of Fitzgerald Location 1646 And New Land Adjacent Fitzgerald Location 1998 Mt. Ridley, Tim D. Overheu
Reconnaissance Investigation Of Fitzgerald Location 1646 And New Land Adjacent Fitzgerald Location 1998 Mt. Ridley, Tim D. Overheu
All other publications
No abstract provided.
Phosphorus Retention Of Sandy Horticultural Soils On The Swan Coastal Plain, Ian Mcpharlin, Neil Delroy, Bob Jeffery, Greg Dellar, Maurice Eales
Phosphorus Retention Of Sandy Horticultural Soils On The Swan Coastal Plain, Ian Mcpharlin, Neil Delroy, Bob Jeffery, Greg Dellar, Maurice Eales
Journal of the Department of Agriculture, Western Australia, Series 4
Soils can be ranked according to their phosphorus retention capacity by the phosphorus retention index (PRI). This is the ratio of phosphorus adsorbed by soil to that remaining in solution under a set of standard conditions. Although it is a laboratory measurement, the PRI seems to be a good indication of what happens in practice.
The Effect Of Selenium On Sulfur Uptake By Barley And Rice, Robert Mikkelsen, Hongfu Wan
The Effect Of Selenium On Sulfur Uptake By Barley And Rice, Robert Mikkelsen, Hongfu Wan
Robert Mikkelsen
Because of their chemical and physical similarities, plant uptake of sulfur and selenium are closely related. Barley and rice were grown in greenhouse solution culture to examine the synergistic interactions between sulfate and selenate in plant uptake. In the presence of low concentrations of solution sulfate, shoot and root yields were decreased with additions of selenate. However, when sulfate was present in elevated concentrations, no selenium-induced yield reductions occurred. A synergistic interaction between sulfate and selenate caused an increase in the shoot sulfur concentrations with increasing concentrations of selenate at low sulfate solution concentrations. At elevated sulfate concentrations, no synergism …
Biuret In Urea Fertilizer, Robert Mikkelsen
Biuret In Urea Fertilizer, Robert Mikkelsen
Robert Mikkelsen
Urea has become the leading form of N fertilizer worldwide. Historically there has been concern about biuret formed during the manufacturing of urea fertilizer and the potential adverse effect of biuret on plant growth. In this paper, the fate of biuret in soils and its phytotoxicity is reviewed. Biuret is mineralized by many soil micoorganisms, but the process is much slower than for urea. Excessively high biuret concentrations can damage seedlings and, like urea, should not be placed in close proximity to germinating seeds. Crop tolerance to biuret varies according to the plant species, soil conditions, fertilizer placement, and method …
Stratification Not Required For Tree-Of-Heaven Seed Germination, William R. Graves
Stratification Not Required For Tree-Of-Heaven Seed Germination, William R. Graves
William R Graves
Tree-of-heaven (Ailanthus altissima (Mill.) Swingle) seed germination and shoot dry weight were determined after stratifying samaras at 5 and 25 °C for up to 28 days. Seeds of samaras stratified at 5 °C for 0, 4, and 12 days showed 70, 77, and 96% germination, respectively, 7 days after sowing. Fourteen days after sowing, 90% of nonstratified seeds had germinated, but shoot weight of nonstratified seedlings was 16% less than that of seedlings from fruit stratified at 5 °C for 12 days. Germination 7 days after sowing was greater after stratification at 5 °C than at 25 °C, but the …
Flueggea Willd, W. John Hayden
Flueggea Willd, W. John Hayden
Biology Faculty Publications
Shrubs to large trees with watery sap. Leaves simple, alternate, pinnately veined, stipulate. Flowers unisexual (and the plants dioecious or rarely monoecious), actinomorphic, in axillary clusters; sepals 4-7, imbricate; petals absent; nectary disk lobed or entire; stamens (3)4-7, alternate with the lobes of floral disk, staminodes absent in pistillate flowers; filaments distinct; ovary superior, on a hypogynous disk, (2)3(4)-carpellate, ovules 2 per cell, hemitropous, pistillode present in staminate flowers; styles distinct and 2-lobed or stigmas sessile. Fruit a capsule or baccate, indehiscent. Seeds 2 per cell. [Hayden, 1987; Sherff, 1939b]
Evaluation Of Seeding Rates Of Au Triumph And Endophyte-Infected Kentucky 31 Tall Fescue, Jeffrey F. Pedersen, D. M. Ball
Evaluation Of Seeding Rates Of Au Triumph And Endophyte-Infected Kentucky 31 Tall Fescue, Jeffrey F. Pedersen, D. M. Ball
Department of Agronomy and Horticulture: Faculty Publications
Increased difficulty in stand establishment of tall fescue (Festuca arundinacea Schreb.) has been reported by producers since the introduction of endophyte (Acremonium coenophialum Morgan Jones and Gams)-free tall fescue seed into the market place. This has encouraged the use of higher seeding rates for endophyte-free tall fescue without scientific basis. The objective of this study was to determine whether ‘AU Triumph’, and endophyte-free cultivar, and endophyte-infected ‘Kentucky 31’ differ in minimum seeding rates for successful establishment. Experiments were established at two locations in each of two years, using a randomized complete block with four replications. Soils at the two locations …
Fertilizing Lawns, Larry A. Sagers
Soil Testing Guide For Home Gardens, Duane Hatch
Soil Testing Guide For Home Gardens, Duane Hatch
All Archived Publications
No abstract provided.
Composting, Jerry L. Goodspeed, Larry A. Sagers
Composting, Jerry L. Goodspeed, Larry A. Sagers
All Archived Publications
No abstract provided.
Grasshoppers In Utah: General Biology, Edward W. Evans
Grasshoppers In Utah: General Biology, Edward W. Evans
All Archived Publications
No abstract provided.
Chemical And Biological Control Of Grasshoppers In Utah, Edward W. Evans
Chemical And Biological Control Of Grasshoppers In Utah, Edward W. Evans
All Archived Publications
No abstract provided.
Tomatoes In The Garden, Duane Hatch
Fescues With Large Roots Are Drought Tolerant, H. A. Torbert, J. H. Edwards, Jeffrey F. Pedersen
Fescues With Large Roots Are Drought Tolerant, H. A. Torbert, J. H. Edwards, Jeffrey F. Pedersen
Department of Agronomy and Horticulture: Faculty Publications
Consideration of root/soil interactions is essential in, adapting tall fescue (Festuca arundinacea Schreb.) to soil and climatic conditions of the Coastal Plain region of the southeast. Sandy soils of the region are very susceptible to the formation of hardpans. These compacted layers often restrict plant root development to the plow layer (0 to 6 in.) and prevent plant roots from reaching available moisture and nutrients in the subsoil horizons. Plants grown under these conditions are shallow rooted and will be subjected to water stress up to 50% of the time during the growing season. Although implements are available to penetrate …
A Review Of The Agronomic Characteristics Of Endophyte-Free And Endophyte-Infected Tall Fescue, Jeffrey F. Pedersen, G. D. Lacefield, D. M. Ball
A Review Of The Agronomic Characteristics Of Endophyte-Free And Endophyte-Infected Tall Fescue, Jeffrey F. Pedersen, G. D. Lacefield, D. M. Ball
Department of Agronomy and Horticulture: Faculty Publications
Agronomic differences between endophyte- (Acremonium coenophialum Morgan Jones and Gams) free and endophyte-infected tall fescue (Festuca arundinacea Schreb.) exist, and should be considered when implementing a management strategy. Although dry matter yield of tall fescue does not generally appear to be influenced by endophyte infection status, endophyte infection has been shown to improve seedling performance and survival, is associated with insect and nematode resistance, drought resistance, improved nitrogen assimilation, and higher seed set. Considering all biologically valuable characters of the endophyte-tall fescue relationship, survival of endophyte-infected tall fescue is probably better than that of endophyte-free tall fescue, especially in drought- …
Heritability Of Root Characteristics Affecting Mineral Uptake In Tall Fescue, J. H. Edwards, Jeffrey F. Pedersen, R. C. Kingery
Heritability Of Root Characteristics Affecting Mineral Uptake In Tall Fescue, J. H. Edwards, Jeffrey F. Pedersen, R. C. Kingery
Department of Agronomy and Horticulture: Faculty Publications
Modification of plant roots can potentially increase the area. of adaptation of tall fescue (Festuca arundinacea Schreb.). Limited information is available on the heritability of root diameter and root volume in tall fescue. A greenhouse experiment was conducted with'50 random 'Kentucky 31' (Ky-31) tall fescue parents and their progeny grown in aerated nutrient solution during four separate time intervals. Measurements of root volume, root diameter, shoot Mg concentration, and shoot K/(Mg + Ca) ratio were made six weeks after clonal material was transplanted in nutrient solution. Heritability estimates for root volume, root diameter, shoot Mg concentration, and shoot K/(Mg …
Grass Seed Production Guide For Utah, Howard Horton, K. H. Asay, T. F. Glover, S. A. Young, B. A. Haws, S. A. Dewey, J. O. Evans
Grass Seed Production Guide For Utah, Howard Horton, K. H. Asay, T. F. Glover, S. A. Young, B. A. Haws, S. A. Dewey, J. O. Evans
All Archived Publications
No abstract provided.