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A Guide To The Identification And Control Of Insect Pests In Ord Peanuts, S.E. Learmonth

Biosecurity research reports

Since peanuts were first grown commercially on the Ord Cockatoo sands in 1979/80, insects have generally been of minor concern but changes in the importance of some insects have occurred to the point where insecticides are required. Therefore, it is important that growers be able to recognize insects in their crops. Such is the objective of this guide which also includes some general information on the biology, feeding habits, methods of detection, and control of the more common insects.

The Ecology Of Skeleton Weed In Western Australia, Afghan Thistle Ecology, Biology Of Gorteria Personata., J. Dodd

Experimental Summaries - Plant Research

The ecology of skeleton weed in Western Australia, 84BA17. Afghan thistle ecology, 84N050. Regenerative ability of stem and root segments, 85PE51. Biology of Gorteria personata, 86M03, 86N08. Life cycle, 86M03, 86N08. Germination requirements, 86PE7.

Wood Anatomy Of Stilbaceae And Retziaceae: Ecological And Systematic Implications, Sherwin Carlquist

Aliso: A Journal of Systematic and Floristic Botany

Wood anatomy of ten species in five genera of the Cape Province (South Africa) family Stilbaceae is reported in quantitative and qualitative terms. Wood anatomy for stem, root, and lignotuber is reported for the monotypic Cape genus Retzia. Stilbaceae and Retziaceae are alike in wood anatomy but differ from Verbenaceae by having scalariform perforation plates with few and wide-bordered bars (simple plates and modified scalariform plates are also present); vessel elements clearly fibriform in shape; very scarce axial parenchyma; and long uniseriate wings on multiseriate rays. When added to endosperm presence and ericoid habit, these features may serve to segregate …

On The Submersion Of Dicraurus Into Iresine (Amaranthaceae), James Henrickson, Scott Sundberg

Aliso: A Journal of Systematic and Floristic Botany

The two species of Dicraurus Hook. f. (Amaranthaceae) are shown to be more closely related to different species in Iresine L. than they are to one another. In addition, characters used to distinguish Dicraurus are more widespread within Iresine than was formerly thought, necessitating the merger of Dicraurus into Iresine. The two species as placed in Iresine are I. alternifolia S. Wats. and I. leptociada (Hook. f.) Henrickson & Sundberg. Complete descriptions and distribution maps of the two species are included.

Reproductive Phytochemistry Of Bombacaceae, Ron Scogin

Aliso: A Journal of Systematic and Floristic Botany

Floral anthocyanins among Bombacaceae exhibit minimal variation and consist of three commonly occurring cyanidin glycosides. Cyanidin 3-rutinoside occurs uniquely in the genus Pachira among taxa surveyed. Nectars are characterized by copious volumes and being somewhat dilute and hexose rich with respect to sugars. No evidence is detectable among Bombacaceae for a nonfiying-mammal floral chemistry syndrome which is distinguishable from a bat-visitation syndrome.

Floral Pigments Of The Yellow Camellia, Camellia Chrysantha (Theaceae), Ron Scogin

Aliso: A Journal of Systematic and Floristic Botany

Floral pigments of Camellia chrysantha consist of three flavonoids (quercimeritrin, rutin, and isoquercitrin) and two xanthophylls (neoxanthin and an unidentified xanthophyll). The transfer of yellow petal coloration from C. chrysantha to other Camellia species may be hampered by interspecific genetic incompatibilities and by the complexities of genetic regulation of biosynthesis of the pigments involved.

Lupin Root Rot, Lupin Hypocotyl Rot, Rhizoctonia Coleoptile Rot Of Wheat, Rhizoctonia Root Rots In Long Term Wheat-Pasture Rotation Trials., M. Sweetingham

Experimental Summaries - Plant Research

Lupin Root Rot: 86Cl4, 86WH15, 86ME85, 86LG63, 85C63, 86WH14. Lupin Hypocotyl rot, 86BA49, 86BA21. Rhizoctonia coleoptile rot of wheat, 86BA19, 86BA20 Rhizoctonia root rots in long term wheat-pasture rotation trials.

Serena And Circle Valley Medic Establishment, M A B Ewing

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

Since the commercial release of the burr medics Serens in 1983, and Circle Valley ayearlater, much has been learnt about the establishment and management of these pasture legumes. When sown on suitable soils and with appropriate establishment and management techniques, these medics have the potential to dramatically change farm profitability. This results from both increased production from livestock and from improved cereal crops grown in rotation.

Using The Zadoks Growth Scale, M W. Perry, D. G. Bowran, G. Brown

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

The Zadoks growth scale, which is already used overseas as an aid to better crop management, is gradually being adopted in crop production in Western Australia.

By using the scale grain growers are able to identify the various stages of crop development, particularily those growth stages that are closely related to practices such as crop spraying where treatment too early or too late may be ineffective or damaging.

Inheritance Of Dhurrin Content In Mature Sorghum Leaves, Herman J. Gorz, Francis A. Haskins, K. P. Vogel

Department of Agronomy and Horticulture: Faculty Publications

Seedlings of both KS8 and N32 sorghum [Sorghum bicolor (L.) Moench] were high in dhurrin [p-hydroxy-(S)-mandelonitrile-β-D-glucoside] and thus in hydrocyanic acid potential (HCN-p), but the HCN-p of mature leaves from field-grown plants of KS8 was only about one-tenth as high as that of N32. A study of the inheritance of this large difference between KS8 and N32 revealed that a single major gene pair was responsible. There were no obvious maternal effects and F,'s were generally intermediate in HCN-p level between the two parents, indicating that neither high nor low HCN-p was completely dominant. HCN-p …

Wood Anatomy Of Gesneriaceae, Sherwin Carlquist, David A. Hoekman

Aliso: A Journal of Systematic and Floristic Botany

Qualitative and quantitative data are presented for woods of 37 species representing 11 genera; most species included represent a maximal degree of woodiness for the family, and herbaceous groups are mostly omitted. Growth rings are absent or nearly so. Vessel elements have simple perforation plates (except for Kohleria elegans) and alternate circular or oval pits of various sizes on vessel-vessel walls (often laterally elongate, often with gaping apertures, on vessel-parenchyma and vessel-septate fiber interfaces). Grooves interconnect pit apertures in vessels of four genera. Vessels are grouped, usually in radial chains, to a moderate extent. Tyloses are present. Imperforate tracheary …

Root And Foliar Diseases Of Wheat On Sandplain In The Geraldton Region., J. Wilson

Experimental Summaries - Plant Research

Leaf disease trial, 86C69. Drench trial, 86C70. Fumigation trial, 86C71. Three springs trial, 86TS31. Soil transfer trial, 86C98. Wheat leaf disease control trial, 86C99. Water use rotation trial, 86C63. Cultivation, naraling (jarvis), 82GE38. Wheat diseases, survey.

Biological Control Of Parkinsonia, W M. Woods

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

One of the most troublesome weeds in northern Australia'a lastoral country is Parkinsonia aculeata, commonly called Parkinsonia, Jerusalem Thorn, Palo Verde or Retama. In 983 Western Australia, ueensland and the Northern Territory started a joint biological control programme against this perst by sending the author overseas to search for its natural predators in southern USA, Mexico and Central America. A few insects show promise and one, a bruchid beetle Mimosetes ulkei, is being tested under Quarantine in Queensland.

Relationships Among Aspen, Fungi, And Ungulate Browsing In Colorado And Wyoming, John H. Hart

Aspen Bibliography

No abstract provided.

The Effect Of Soil Storage Methods And Soil Microbes On Carbofuran And Terbufos Degradation, Muriel Monteleone Runholt

Electronic Theses and Dissertations

The purpose of this research was to determine optimal soil storage methods for soils used in carbofuran and terbufos degradation studies. The effect of soil microbes on degradation was also observed. An LD₅₀ study, using 22 day old crickets (Acheta domestica), was undertaken to establish the appropriate LC dose for carbofuran in the soil storage studies. A carbofuran use history failure soil and a noninsecticide use history soil of the same type were collected from the SDSU experimental farm in Centerville, South Dakota. After initial degradation and microbial analysis, the soils were stored air-dried and with a moisture level …

Species-Specific Restriction Site Polymorphism In Root-Knot Nematode Mitochondrial Dna, Thomas O. Powers, E. G. Platzer, Bradley C. Hyman

Department of Plant Pathology: Faculty Publications

Research was initiated to physically characterize the mitochondrial genomes of several Meloidogyne spp. and host-races, to address questions regarding their systematics and dispersal, and to assess the possibility of developing molecular diagnostics for these nematodes. Techniques were developed for purification and rapid detection of mitochondrial DNA from root-knot nematodes. Mitochondrial DNAs among Meloidogyne spp. were demonstrated to exhibit extensive divergence. The potential for using the rapidly diverging mitochondrial genomes as a diagnostic assay for M. incognita, M. hapla, M. arenaria, and M. javanica is discussed.

Illustrations Of Fox Ridge State Park Mosses, Coles County, Illinois, Jamaliah Ahmad

Masters Theses

This thesis is a continuation of a study done by Dave A. Breen, B. S., M.S. in Botany (1985). Breen studied and collected the bryophytes of Fox Ridge State Park which is located aproximately 8 miles south of Charleston, Illinois in Coles County (Sec. 11, 12 and 13, T11N, R9E.). Breen found sixty eight species of mosses, one species new to Illinois and nine species new to Coles County. This additional illustrative work covers Breen's general taxonomic study. It is to be utilized in the identification of those mosses of the Fox Ridge State Park. Techniques used in illustrations were …

Nebraska Plant Distribution, David M. Sutherland, Robert B. Kaul

Biology Faculty Publications

Distribution notes based on recent collections and herbarium work are provided for 46 Nebraska plant taxa, including 43 flowering plants, two ferns, and one liverwort. The list includes several plants that are new to the State and provides range extensions within the State for many others. Several previously- published distribution records believed to be erroneous are also discussed.

A Temperature-Sensitive Chlorophyll Β-Deficient Mutant Of Sweetclover (Melilotus Alba), John P. Markwell, Stephen Danko, Hermann Bauwe, John Osterman, Herman Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

The ch4 mutant of sweetclover (Melilotus alba) has previously been demonstrated to be partially deficient in chlorophyll and to have a higher ratio of chlorophyll a to b than normal plants. We were able to substantiate these findings when plants were grown at 23°C and lower (permissive temperatures). However, when grown at 26°C (nonpermissive temperature) the plants produced small yellow leaves which exhibited one- twentieth the chlorophyll content of normal plants. Affected leaves did not increase their chlorophyll content when plants were incubated at permissive temperatures, but leaves which developed at the lower temperature contained increased amounts of …

Yellow Spot Of Wheat, R Loughman, J. M. Wilson, R. E. Wilson

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

Yellow spot is a serious leaf disease of wheat in Western Australia. It also occurs in Queensland, New South Wales and South Australia. Yellow spot can appear as a severe leaf blight but generally the disease does not have the rapid epidemic development of wheat rust diseases. It builds up more slowly and is not as obvious in the crop, while caising appreciable yield loss.

Isolation Of Nuclei From Physarum Flavicomum: Demonstration Of Nuclear Cyclic Acid Amp Phosphodiesterase, Judith A. Bean, Maurice G. Kleve, Thomas J. Lynch

Journal of the Arkansas Academy of Science

Cyclic AMP phosphodiesterase activity in the nucleus of the myxomycete Physarum flavicomum was demonstrated by cytochemical staining utilizing electron microscopy and by enzymatic assays with tritiated cyclic AMP as the substrate. Cytochemical staining showed Physarum's plasmodial phosphodiesterase activity to be located in the nucleus, along the plasma membrane, in vesicles, and free in the cytoplasm. Nuclear phosphodiesterase, which may be cell cycle dependent, was primarily located in the nucleolus. Nuclei from three to five day old microplasmodial cultures were isolated by the method of Henney and Yee. Whole cells were collected through centrifugation and washed. Pellets were homogenized in a …

Effects Of Juglone (5'-Hydroxy-1, 4-Naphthoquinone) On The Algae Anabaena Flos-Aquae, Nostoc Commune, And Scenedesmus Acuminatus, V. Diane Randall, Jimmy D. Bragg

Journal of the Arkansas Academy of Science

Three species of algae, Anabaena flos-aquae, Nostoc commune and Scenedesmus acuminatus were selected for their sensitivity to juglone and studied for the effects of juglone concentrations of 10, 1, 0.5, 0.1 and 0.01 μg/ml upon their growth. A. flos-aquae was most sensitive, with significant inhibition by the 0.5 μg/ml concentration. N. commune was inhibited least, with significant inhibition only in the 10 μg/ml concentration. S. acuminatus was found to be moderately inhibited at the 0.5 μg/ml concentration. All species were found to be non-viable after 14 days exposure to 10 μg/ml juglone. Tests with 7 and 14 day old cells …

Wood Anatomy Of Myoporaceae: Ecological And Systematic Considerations, Sherwin Carlquist, David A. Hoekman

Aliso: A Journal of Systematic and Floristic Botany

Quantitative and qualitative features are presented for 28 collections of three genera (Bontia, Eremophila, Myoporum); data on Oftia are also included since it is sometimes referred to Myoporaceae. Wood of all Myoporaceae represents variation on a basic plan: woods diffuse porous or semi-ringporous; vessels with simple perforation plates; lateral wall pits of vessels alternate and circular, with grooves interconnecting some pit apertures; vessels grouped to various degrees into radial multiples; imperforate tracheary elements all fiber-tracheids with pit cavities 1-5 μm in diameter (wider on contacts with ray cells), nonseptate; axial parenchyma vasicentric scanty plus, in some …

Effect Of Active Immunization Against Lhrh Or Lh In Boars: Reproductive Consequences And Performance Traits, R. E. Falvo, V. Chandrashekar, R. D. Arthur, A. R. Kuenstler, T. Hasson, C. Awcniyi, B. D. Schanbacher

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Forty crossbred boars were equally divided into eight groups at birth. Four groups were immunized (200 μg/boar) at 12 wk of age against either luteinizing hormone-releasing hormone (LHRH) conjugated to human serum globulin (LHRH-hSG) in complete Freund's adjuvant (CFA), LHRH-hSG in muramyldipeptide adjuvant (PEP), procine luteinizing hormone (LH) conjugated to hSG (pLH-hSG) in CFA or ovine LH (oLH) in CFA. Equal doses of boosters were given in either PEP or incomplete Freund's adjuvant (IFA) at 16 and 18 wk of age. Two groups of boars were immunized with either hSG + CFA or hSG + PEP (adjuvant controls). Two groups …

Growth And Magnesium Uptake Of Tall Fescue Lines At High And Low Potassium Levels, J. H. Edwards, Jeffrey F. Pedersen

Department of Agronomy and Horticulture: Faculty Publications

Five tall fescue (Festuca arundinacea Schreb.) clonal lines with diverse root and xylem diameters were grown in nutrient solutions with magnesium (Mg) concentrations of 42, 125 and 250 µm and potassium K concentrations of 133 and 333 µm. Leaf Mg concentrations increased with increasing Mg rates at both low and high K concentrations. The tall fescue line with the largest root and xylem diameters had low leaf Mg concentrations, indicating a possible increased Mg tetany potential when consumed by cattle. The response of the K/(Mg+Ca) ratio in the plant, an indicator of tetany potential, to varying solution Mg at low …

Evolution And Reproductive Biology Of Inflorescences In Lithocarpus, Castanopsis, Castanea, And Quercus (Fagaceae), Robert B. Kaul

School of Biological Sciences: Faculty Publications

Of Lithocarpus, Castanopsis, Castanea, and Quercus, only Lithocarpus frequently bears branched spikes suggestive of the primitive condition in the Fagaceae; the other genera sometimes have them in some individuals. Simple and branched spikes can occur on the same tree. Evolution of the simple spike is interpreted as the loss of branching capacity in the branched spikes. The Fagaceae show various transitional stages from perfect, entomophilous to imperfect, anemophilous flowers and from mixed-sex to unisexual spikes. Complete separation of staminate from pistillate function into separate spikes and catkins occurs only in Quercus, which is also the only …

Transposon Mutagenesis And Excision Of R' Plasmids By Conjugative, Chimeric Plasmid Puw942 In Extra-Slow-Growing Rhizobium Japonicum Strains, Alahari Arunakumari, Anne K. Vidaver

Department of Plant Pathology: Faculty Publications

Transposons Tn501 (specifying mercury resistance) and Tn7 (specifying resistance to trimethoprim and streptomycin) were introduced into extra-slow-growing Rhizobium japonicum by conjugal transfer of the 82 kilobase chimeric plasmid pUW942. Mercury-resistant transconjugants were obtained at a frequency of 10^-7 to 10^-9. The transfer frequency of streptomycin resistance was lower than that of mercury resistance, and Tn7 was relatively unstable. pUW942 was not maintained as an autonomously replicating plasmid in R. japonicum strains. However, some of the Hg^r transconjugants from the RJ19FY, RJ17W, and RJ12S strains acquired antibiotic markers of the vector plasmid pUW942. Southern hybridization of plasmid …

Corn And Soybean Yield Response To Crop Residue Management Under No-Tillage Production Systems, Wallace Wilhelm, J. W. Doran, James F. Power

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Crop residues (stover) have many potential uses by society: food, feed, shelter, fuel, and soil amendment. Use of residues for purposes other than as a soil amendment may have serious negative consequences on crop productivity. This study was conducted to investigate the yield response of continuous corn (Zea mays L.) and continuous soybean [Glycine max (L.) Merr.] to removal or addition of crop residues under no-tillage management. The study was conducted near Lincoln, NE, on a Crete-Butler silty clay loam (fine, montmorillonitic, mesic Pachic Arguistoll-Abruptic Argiaquoll) with 1 to 2% slope. Crop residue was collected and weighed immediately …

Morphological Aspects Of Seedling Establishment In Four Temperate Region Phorandendron Spp., Beverlee M. Ruhland

Dissertations and Theses

Four species of Phoradendron were examined for seedling morphology: P. bolleanum subsp. densum (on Juniperus), P. californicum (on Prosopis), P. juniperinum subsp. juniperinum (on Juniperus, P. villosum subsp. villosum (on Quercus). The main species used in the study was P. juniperinum, using the other species for comparison. The initial shoot(s) of P. juniperinum may develop from the epicotyl of the developing seedling, from adventitious buds which arise from a cushion of tissue, termed the haustorial cushion, formed beneath the holdfast, or from both positions. When shoots arise only from adventitious buds the original seedling remains attached in a lateral position, …

Nebraska Plant Distribution, David M. Sutherland, Robert B. Kaul

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Distribution notes based on recent collections and herbarium work are provided for 46 Nebraska plant taxa, including 43 flowering plants, two ferns, and one liverwort. The list includes several plants that are new to the State and provides range extensions within the State for many others. Several previously published distribution records believed to be erroneous are also discussed.