Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 20761 - 20790 of 256032

Full-Text Articles in Life Sciences

Fertilizer Policies For Grassland Production In Winter Cold High Country In The South Island New Zealand And Southern China, C C. Boswell, M.J S. Floate Nov 2024

Fertilizer Policies For Grassland Production In Winter Cold High Country In The South Island New Zealand And Southern China, C C. Boswell, M.J S. Floate

IGC Proceedings (1977-2023)

Fertiliser policies for legume-based pastures on the high plateau of Guizhou province southern China are compared with those for the South Island of New Zealand, Guizhou policy is reduced to a few essentials. Choice of fertiliser is restricted; severe phosphorus deficiency is corrected with locally manufactured fused calcium magnesium phosphate, potassium deficiency with imported potassium sulphate or chloride. A simple recommendation applies for establishment and maintaining production over vast areas and potentially to huge numbers of small farms (3-7 ha). In the South Island high country, fertiliser forms and rates are matched as far as possible to the variety of …

Go to article

Residual Effects Of Oversowing, Overdrilling, And Herbicide In The Long-Term Control Of Hieracium Pilosella In Otago, New Zealand, G G. Cossens, C C. Boswell Nov 2024

Residual Effects Of Oversowing, Overdrilling, And Herbicide In The Long-Term Control Of Hieracium Pilosella In Otago, New Zealand, G G. Cossens, C C. Boswell

IGC Proceedings (1977-2023)

The mat-forming weed Hieracium pilosella {mouse-eared hawkweed) has become a major problem of tussock grasslands in New Zealand. Thirteen trials investigating methods of hawkweed control were laid down during 1975-80, monitored for 3 years, and subsequently reassessed in 1991. When grazing was excluded hawkweed was reduced from 60 to 3% ground cover within 18 months by topdressing and oversowing or overdrilling legumes; and to 22% by the use of the herbicides, 2,4 D and mecoprop-MCPA-dicamba. With grazing and no further topdressing, these improved lands reverted to hawkweed at a mean rate of 2-3%/year, as did overgrazed unimproved tussock grassland. In …

Go to article

Rangeland Improvement On Granitic Soils In Uruguay, D F. Risso, D A. Moron Nov 2024

Rangeland Improvement On Granitic Soils In Uruguay, D F. Risso, D A. Moron

IGC Proceedings (1977-2023)

Granitic soils comprise more than 15% of productive land of the country, Soils are variable, all being deficient in nitrogen and phosphorus, having a moderately low pH, more than 40% being shallow with low levels of organic matter. Livestock production is predominantly developed on range with moderate yield and ample variations (avg. DM/ha/year=3.l t; c.v.=27.6%; winter yield=l2%), Research conducted to improve this situation, evaluated: 1) range P fertilisation during 5 years, which resulted in a small (but significant) yield increase and improved P concentration of forage. 2) P fertilisation and interseeding of legumes through different methods. Largest differences were due …

Go to article

Use Of Dryland Forage Plants For Improving Semi-Arid And Hawkweed-Affected Land In New Zealand, B J. Wills, J S. Sheppard, J.S C. Begg Nov 2024

Use Of Dryland Forage Plants For Improving Semi-Arid And Hawkweed-Affected Land In New Zealand, B J. Wills, J S. Sheppard, J.S C. Begg

IGC Proceedings (1977-2023)

mi-arid climatic conditions affect large areas of New Zealand's South Island east coast and inland basins. A significant area - some 6 million ha - is affected by, or is at risk from, invasion by hawkweeds, mainly Hieracium pilose/la. This plant, along with rabbits, is severely affecting the viability of extensive pastoral grassland farming in New Zealand. Soil erosion, in particular associated with frost heave and wind, is notable in areas associated with both a semi-arid climate and high densities of hawkweeds. The use of dryland pasture plants selected for drought tolerance, frost tolerance and ability to grow under low …

Go to article

Small-Grain Forage For Winter Pastures, D J. Undersander, D P. Hutchenson Nov 2024

Small-Grain Forage For Winter Pastures, D J. Undersander, D P. Hutchenson

IGC Proceedings (1977-2023)

The paper summarises 2 studies comparing wheal (Triticum aestivum), barley (Horderim vulgare), rye (Triticale secale), and triticale (x Triticoseca/e) for fornge production and animal performance. Wheat, rye and triticale were planted in 10, 20 and 30 cm row spacings and grown over 2 winters in South Carolina. Porage yield from early­October plantings ranged from 2961 to 5000 kg/ha in 1986-87 and from l012 to 3400 kg/ha in 1987-88. Porage yield was highest from rye, most of the forage growth occurring in autumn. Wheat produced forage growth most uniformly throughout autumn and spring. In the …

Go to article

Effects Of Lime And Fertilizer On The Establishment Of White Clover In The Falkland Islands, J A. Kerr, Rosie Poultney Nov 2024

Effects Of Lime And Fertilizer On The Establishment Of White Clover In The Falkland Islands, J A. Kerr, Rosie Poultney

IGC Proceedings (1977-2023)

White clover (Trifolium repens L.)-based pastures could improve low pasture and animal production in the Falkland Islands. However, establishment is difficult and expensive. Effects of lime and fertilisers containing nitrogen (N), phosphorus (P) and potassium (K) on white clover dry matter yield and root nodulation were experimentally assessed between 1986-88. Lime at 1 t/ha and 30 kg/ha P as triple superphosphate, separately improved clover yield. Nodulation was improved only by lime. Neither N nor K fertilisers affected on white clover establishment yields,

Go to article

Complementarity Between Summer-Active Grasses And Cool-Season Annual Legumes In Temperate-Zone Pastures, W H. Johnston Nov 2024

Complementarity Between Summer-Active Grasses And Cool-Season Annual Legumes In Temperate-Zone Pastures, W H. Johnston

IGC Proceedings (1977-2023)

The effect of mowing and subterranean clover (Trifolium subterraneaum) on plant density; basal area and total dry matter yield of the C perennial grasses Eragrostis curvula complex, cv. Consol and 4 Accession 4660, and Cenchrus ciliaris cv. American, and the c; Pllalaris aquatica cv. Sirocco was studied at Cowra, NSW, Australia between spring 1982 and spring 1987. C. cilaris did not persist. The density and basal area of phalaris was not affected by subterranean clover but declined with mowing, Clover reduced the density, basal area and summer dry matter ·yield of E. curvula while mowing was', advantageous. E. curvula …

Go to article

Winter Grazing Rough Fescue Grasslands With And Without Preconditioning On Annual Pasture, W D. Willms, L M. Rode, B S. Freeze Nov 2024

Winter Grazing Rough Fescue Grasslands With And Without Preconditioning On Annual Pasture, W D. Willms, L M. Rode, B S. Freeze

IGC Proceedings (1977-2023)

Winter grazing of the fescue prairie is desirable to reduce the cost of feeding preserved forages and to conserving the native prairie. Rough fescue (Festuca campestris Rydb,), the dominant and most productive forage species in the foothills region, is highly sensitive to summer grazing but tolerates grazing while dormant. Since the forage quality declines after senescence, and the energy requirements increase in winter, this study was made to determine the feasibility of winter gmzing pregnant Hereford cows with and without preconditioning on annual pasture. The study, replicated over a 4-year period {n=4), used a 2x2 factorial design representing native …

Go to article

Interaction Of Drill Type And Herbicide On Pasture Establishment In Semi-Arid Environments, W L. Lowther, R F. Horrell, P D. Johnstone, K D. Trainor Nov 2024

Interaction Of Drill Type And Herbicide On Pasture Establishment In Semi-Arid Environments, W L. Lowther, R F. Horrell, P D. Johnstone, K D. Trainor

IGC Proceedings (1977-2023)

Results are presented from an overdrilling experiment comparing a conventional triple-disc drill with an' experimental single-pass strip­seeder drill designed to remove competiting vegetation mechanically; Herbicide application markedly increased herbage mass of sown species in the triple-disc treatments. ,However, herbage mass was. higher from the strip-seeder drill than the .triple-disc in both ihe' nbsence and presence of herbicide. The results indicate the potential of the strip-seeder drill technology for cost-effective establishment of pasture species in difficult environments.

Go to article

Alfalfa Cultivar Selection From 30 Years Of Records In The State Of Illinois, Usa, Don W. Graffis Nov 2024

Alfalfa Cultivar Selection From 30 Years Of Records In The State Of Illinois, Usa, Don W. Graffis

IGC Proceedings (1977-2023)

Data from alfalfa (Medicago sativa L.) cultivar trials in Illinois, USA from 1963 lo 1992 have been adapted to a computer software spreadsheet for storage and manipulation. The data recorded have been the percentage of check cultivar's yield. The average % of checks for a given cultivar is calculated after each year of recorded yield. The computer spreadsheet enables sorting of resultant yields. The sorting in descending order determines lhe top-performing cultivars. Criteria used lo determine cultivar suggestions for extension clienlele are: (a) a minimum of 3 harvest years in the region of cultivar suggestion, and (b) the cultivar …

Go to article

Developing Eastern Gamagrass On A Conserved Forage, John A. Dickerson, Paul R. Salon Nov 2024

Developing Eastern Gamagrass On A Conserved Forage, John A. Dickerson, Paul R. Salon

IGC Proceedings (1977-2023)

Bastern gamagrass (Tripsacum dactyloides L.) is highly regarded as a native forage resource in the prairie region of North America. Recent discovery of a gynomonoecious plant in Kansas has raised expectations that efficient seed production will be possible with the species. A possible use for eastern gamagrass is as a perennial haylage crop for dairy farms, replacing erosion-prone silage corn. Compared with corn silage, eastern gamagrass forage has higher crude protein, slightly lower energy, and higher neutral detergent fibre and acid detergent fibre. Breeding work is underway to develop hardy, high volume forage-producing strains with good seed production capability. …

Go to article

Rangelands In Dry Mountain Areas, T Boyadgiev Nov 2024

Rangelands In Dry Mountain Areas, T Boyadgiev

IGC Proceedings (1977-2023)

The extent and characteristics of temperate and mountainous climatic zones, steeply dissected and mountainous areas, permanent meadows and pasture lands, and the trend of land use evolution and aspects of land degradation are presented and discussed. The rangelands improvement strategy in Bulgaria is based on mineral fertilisation of mountainous grasslands leading to an increase in production of dry material, protein, phosphorus and cereals, This reduces sheet erosion. Overgrazing and prolonged dry periods, causing a decrease in the number of species, are also discussed, Measures to improve grassland practices are proposed.

Go to article

Improvement Strategies In Winter Cold Temperate Rangeland Ecosystems With Particular Reference To Extensive Grazing Lands Of Iran, A Koocheki Nov 2024

Improvement Strategies In Winter Cold Temperate Rangeland Ecosystems With Particular Reference To Extensive Grazing Lands Of Iran, A Koocheki

IGC Proceedings (1977-2023)

Traditional land use systems in Iran have been divided between crop production and livestock grazing. Grazing land management in most parts is based on pastoral nomadism which operates between plains as winter grazing lands and mountains as summer grazing lands. Mountainous areas are an important source of food and feed production for nomads and their herds. In Iran two main ranges of mountains, Elburz and Zagros, are the summer territory of nomadic pastoralists. At present 1.5% of total population of the country are nomads. They contribute as much as 27% of value added in the animal industry of the country. …

Go to article

Winter Cold Temperate Rangelands: Improvement Strategies For Intensive Rangeland Ecosystems, B E. Allan, D Scott Nov 2024

Winter Cold Temperate Rangelands: Improvement Strategies For Intensive Rangeland Ecosystems, B E. Allan, D Scott

IGC Proceedings (1977-2023)

Transfer of developed grassland technologies to rangelands is discussed in terms of environmental gradients and the options and constraints they impose. Winier feed limitation can be overcome through conserved feeds and various in situ systems involving special purpose pastures and feed banks. General animal nutrition can be improved through intensive development, low input systems, better control of range utilisation and, where appropriate, correction of mineral deficiencies. The emphasis in seeking quick and easy solutions to rangeland management problems is questioned, A more informed, environmentally sound and sustainable approach to rangeland fanning atlitudes and management is proposed. A stepwise process to …

Go to article

Use Of Electrical Bone Growth Stimulators In High-Risk Patients Following Spinal Fusion, Soumya Malhotra, Khavir Sharieff Nov 2024

Use Of Electrical Bone Growth Stimulators In High-Risk Patients Following Spinal Fusion, Soumya Malhotra, Khavir Sharieff

HCA-NSU MD Research Day

Title: Use of Electrical Bone Growth Stimulators in High-Risk Patients Following Spinal Fusion Authors: Soumya Malhotra, BA., MS1 & Khavir Sharieff, DO, MBA2 1Class of 2027, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, FL 2Assistant Professor of Surgery, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Tampa Bay, FLNova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine Objective: This study aimed to elucidate the advantages of EBGSs following high-risk spinal fusions. Background: Pseudarthrosis is a condition where bones fail to fuse after an injury or surgery. It causes significant …

Go to article

Hans Holbein's Portrait Of Henry Viii: England's Own Personal Jesus, Amy Pitsor Nov 2024

Hans Holbein's Portrait Of Henry Viii: England's Own Personal Jesus, Amy Pitsor

Best Integrated Writing

Pitsor explores the possibility that Holbein’s late-stage change in the composition of the portrait from a three-quarter view of Henry to a frontal view held a motive to present Henry as the head of the newly established Church of England and as equal to the pope, and possibly to Christ himself.

Go to article

La Falta De Los Supermercados En El Oeste De Dayton: Cómo Obtienen Los Estudiantes Comida Fresca En Los Desiertos Alimentarios (Un Ensayo Expositivo-Argumentativo, Catherine Iacobacci Nov 2024

La Falta De Los Supermercados En El Oeste De Dayton: Cómo Obtienen Los Estudiantes Comida Fresca En Los Desiertos Alimentarios (Un Ensayo Expositivo-Argumentativo, Catherine Iacobacci

Best Integrated Writing

After having learned about how poverty can affect children’s educational outcomes in one of her classes, Iacobacci wanted to learn more about how the issue affected the area where she lived and went to school. What she found out was incredibly shocking, and only furthered the idea that students are struggling with opportunity gaps, not achievement ones. Unfortunately, due to discriminatory loan practices from long ago, children from the 21st century are suffering physically, emotionally, and academically.

Go to article

The Journey Within: My Travel Journel, Devonique Jones Nov 2024

The Journey Within: My Travel Journel, Devonique Jones

Best Integrated Writing

This project is a multigenre research exploration that delves into Jones's personal journey of self discovery and growth during her first solo trip.

Go to article

Investigation Of Ndv In Southern African Waterfowl Reveal Insightful Geographic And Biodiversity Trends To Help Contain The Virus, Lauren Goodwill Nov 2024

Investigation Of Ndv In Southern African Waterfowl Reveal Insightful Geographic And Biodiversity Trends To Help Contain The Virus, Lauren Goodwill

Best Integrated Writing

This study assesses the infection rates and trends of Newcastle disease in southern African waterfowl, a project carried out by Emily Murphy in Dr. Jeffrey Peters’ laboratory

Go to article

Analysis Of The Integration Of Race And Cultural Concordant Doulas Into The Birth Experience Of African American Women, Cherissa Garcia Nov 2024

Analysis Of The Integration Of Race And Cultural Concordant Doulas Into The Birth Experience Of African American Women, Cherissa Garcia

Best Integrated Writing

Garcia's study looks at how integrating race and cultural-concordant doulas into the birth experience of African American women would impact outcomes. She found similar studies that provided strong evidence to support doula integration. However, most did not select study populations that appropriately reflected the African American women at increased risk of poor outcomes. As a result, Garcia designed a study that looked at race and cultural concordance between doulas and patients from a wide range of SES backgrounds and varying degrees of pregnancy risk.

Go to article

The Foreigner In Our Midst: Jewish Rights Debates In Revolutionary France, William Evans Nov 2024

The Foreigner In Our Midst: Jewish Rights Debates In Revolutionary France, William Evans

Best Integrated Writing

The debates surrounding Jewish rights during the French Revolution concerned many of the same subjects that divide the Western world today. The fear of the other, immigration as a political tool, and the disagreements over assimilation are all subjects which feature prominently today. In this essay Evans sets out to explore these debates while fairly assessing the historical informants.

Go to article

Junebug In January: A Novel Excerpt, Hannah Carson Nov 2024

Junebug In January: A Novel Excerpt, Hannah Carson

Best Integrated Writing

This section of Junebug in January is the beginning of a much longer story that follows eighteen-year-old June and her small family as she attempts to survive the harsh reality of living in the era of the Great Depression and her attempts to survive her Papa’s tasks for her. This story challenges the boundaries of family loyalty, investigates the concept of “saving yourself,” and explores the limits of redemption.

Go to article

Best Integrated Writing Fall 2024 - Complete Edition, Wright State University School Of Humanities And Cultural Studies, Kristie Mckiernan, Tracy Smith Nov 2024

Best Integrated Writing Fall 2024 - Complete Edition, Wright State University School Of Humanities And Cultural Studies, Kristie Mckiernan, Tracy Smith

Best Integrated Writing

Best Integrated Writing includes excellent student writing from Integrated Writing courses taught at Wright State University.

Go to article

Nourishing Skin Health: The Impact Of A Balanced Diet On Chronic Inflammatory Skin Conditions, Archana Banda Nov 2024

Nourishing Skin Health: The Impact Of A Balanced Diet On Chronic Inflammatory Skin Conditions, Archana Banda

HCA-NSU MD Research Day

Objective: This study was conducted to determine the influence a balanced diet has on the outcome of specific dermatologic conditions notably psoriasis, atopic dermatitis, and rosacea. Background: Nutritional status is pivotal in shaping holistic wellness, which extends to skin health. Adequate nutrition can prevent the worsening of inflammatory conditions. Methods: A literature review was conducted to analyze how specific dietary habits for selected chronic inflammatory cutaneous conditions influence the presentation and overall clinical outcome. Results: The analysis indicates a higher incidence of flare-ups with diets heavily consisting of carbohydrates, red meat, alcohol, and fats. Specific diets, such as the Western …

Go to article

To Be Conscious Or Not To Be, Bjørn Grinde Nov 2024

To Be Conscious Or Not To Be, Bjørn Grinde

Animal Sentience

Carolyn Ristau has done a fine job summarizing the work and life of the zoologist Donald Griffin. Most scientists now accept the existence of animal sentience, but identifying which species possess consciousness remains controversial. Griffin defined consciousness as "the subjective state of feeling or thinking about objects and events.” Nonconscious processes are faster and more energy-efficient, however, and often drive behavior. Consciousness probably evolved for complex decision-making, shaped by evolutionary continuity, with feelings as a common currency for evaluating outcomes. Its survival advantage may be limited, and its presence across species varies depending on evolutionary trajectories.

Go to article

Black Grouper Neurocranium, Grace K. Triplett, Katelyn A. Mckimmy, Lacey Adamik, David Kerstetter Nov 2024

Black Grouper Neurocranium, Grace K. Triplett, Katelyn A. Mckimmy, Lacey Adamik, David Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

No abstract provided.

Go to article

A Multidirectional Study On Chemical Fingerprints And Biological Activities Of Three Cistus Extracts (C. Creticus, C. Laurifolius, And C. Salviifolius) With Ethnomedicinal Uses, Sakina Yagi, Gökhan Zengi̇n, Selami̇ Selvi̇, Güneş Ak, Zoltán Cziáky, József Jekő, Maria J. Rodrigues, Luisa Custodio, Roberto Venanzoni, Giancarlo Angeles Flores, Gaia Cusumano, Paola Angelini Nov 2024

A Multidirectional Study On Chemical Fingerprints And Biological Activities Of Three Cistus Extracts (C. Creticus, C. Laurifolius, And C. Salviifolius) With Ethnomedicinal Uses, Sakina Yagi, Gökhan Zengi̇n, Selami̇ Selvi̇, Güneş Ak, Zoltán Cziáky, József Jekő, Maria J. Rodrigues, Luisa Custodio, Roberto Venanzoni, Giancarlo Angeles Flores, Gaia Cusumano, Paola Angelini

Turkish Journal of Botany

Humans have used medicinal plants to treat various diseases for thousands of years. Cistus species are also widely used in traditional medicine and have various medicinal applications; therefore, they deserve more in-depth research. The present study evaluated the chemical profile, antioxidant, enzyme inhibition, and cytotoxic properties of the twigs and leaves of C. creticus L., C. laurifolius L., and C. salviifolius L. grown in Türkiye. Methanolic extracts of the three species were rich in phenolics, mainly flavonoids, and exerted potent antioxidant activity with methanolic extract from the leaves of C. salviifolius displayed the highest total phenolic (97.08 mg GAE (gallic …

Go to article

Morpho-Environmental Variability For Scilla L. The Biogeographic Dynamism Under Climate Change Scenarios, João Rocha, Rubén Ramírez-Rodríguez, Francisco Amich, Darinka Gonzalez, Mário Santos, Reinaldo Cajaiba, António L. Crespí Nov 2024

Morpho-Environmental Variability For Scilla L. The Biogeographic Dynamism Under Climate Change Scenarios, João Rocha, Rubén Ramírez-Rodríguez, Francisco Amich, Darinka Gonzalez, Mário Santos, Reinaldo Cajaiba, António L. Crespí

Turkish Journal of Botany

This paper explores the correlations between morphological variability and range dynamics in western Eurasian-Mediterranean flora through a fluctuating asymmetry (FA) perspective across ten climate scenarios. We investigate the potential distribution of Scilla L. and its thermopluviometric correlations, and compare them with other three genera analysed previously, for western Eurasia and northern Africa (Baldellia Parl., Jasione L., and Ononis L. -Viscosae and Natrix sections-), considering past (22 Kyrs), present, and future conditions (2081-2100). By comparing "overlapped areas" (OA) with "non-overlapped areas" (NOA), we found two distinct groups of responses among genera: Scilla show higher morphological variability in NOAs, while Baldellia concentrate …

Go to article

Financial Analysis, Tina N. Barrett Nov 2024

Financial Analysis, Tina N. Barrett

Cornhusker Economics

The investment in a financial analysis can seem like a painful task of gathering information but the information it provides gives you invaluable information about your operation, especially when you don’t want to see it. I was once told a producer didn’t want to do the analysis anymore because the information made it hard to sleep at night. While not knowing maybe helped him sleep then, the problems that were being highlighted by the analysis didn’t go away and eventually caught up to him.

Go to article

Evaluation Of 10 Specialty Pepper Cultivars In Southwest Michigan In 2024, Ben Phillips Nov 2024

Evaluation Of 10 Specialty Pepper Cultivars In Southwest Michigan In 2024, Ben Phillips

Midwest Vegetable Trial Reports

A specialty pepper cultivar trial was planted at the Southwest Michigan Research and Extension Center (42.081985, -86.354087, Benton Harbor, Michigan). Tozer (TZ) and United Genetics (UG) seed companies donated specialty pepper cultivars for plastic-mulch bedded and trellised hand harvest. Overall trial conditions were excellent, however our pre-plant fertilizer mixing was outsourced this year, and a spreader was rented from the same company. Due to either a mixing error or a misapplication with a piece of unfamiliar or malfunctioning equipment, the plots received a toxic level of boron, which remained in plant tissues for the whole season.

Go to article

First Prev Next Last