Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (662256)
- Arts and Humanities (577544)
- Law (545880)
- Education (386667)
- Medicine and Health Sciences (328617)
-
- Physical Sciences and Mathematics (294676)
- Life Sciences (255890)
- Engineering (198018)
- History (183372)
- Business (150777)
- Higher Education (145535)
- Anthropology (116064)
- Religion (109896)
- Archaeological Anthropology (96478)
- Communication (89500)
- Sociology (87278)
- Library and Information Science (80678)
- Medical Specialties (78901)
- United States History (78711)
- Psychology (73979)
- Computer Sciences (63962)
- Public Affairs, Public Policy and Public Administration (63216)
- Earth Sciences (59522)
- Creative Writing (58189)
- Public Health (54798)
- Environmental Sciences (52709)
- Economics (47578)
- English Language and Literature (47204)
- Educational Administration and Supervision (46622)
- Medical Sciences (46125)
- Institution
-
- University of South Florida (163400)
- University of New Mexico (139727)
- University of Nebraska - Lincoln (114065)
- Kenyon College (112902)
- University of Montana (98560)
-
- University of Mississippi (95205)
- University of New Hampshire (79840)
- Brigham Young University (72324)
- Georgia Southern University (61733)
- Eastern Illinois University (58586)
- Utah State University (57335)
- Mississippi State University (54722)
- Western Michigan University (53086)
- University of Kentucky (52552)
- Murray State University (50654)
- Purdue University (50135)
- University of Colorado Law School (47508)
- Louisiana State University (45265)
- Brigham Young University Law School (44084)
- Western Kentucky University (43096)
- Villanova University Charles Widger School of Law (42895)
- California Polytechnic State University, San Luis Obispo (42580)
- University of Central Florida (42553)
- University of Dayton (41462)
- University of Alabama at Birmingham (38142)
- Chulalongkorn University (37845)
- San Jose State University (37198)
- University of Northern Iowa (36032)
- Yale University (33913)
- Missouri University of Science and Technology (33681)
- Keyword
-
- Newspaper (47941)
- Latin America (31541)
- Press release; media release; press statement; news media information (30839)
- Spanish (30834)
- Humans (30098)
-
- History (30062)
- University of New Mexico (29737)
- UNM (29639)
- LADB (29608)
- LAII (29608)
- Latin American and Iberian Institute (29608)
- Education (29102)
- United States (21544)
- Student newspaper (20308)
- Newsletter (19720)
- EIU (19634)
- Georgia Southern University (18971)
- Newspapers (18270)
- Deaf culture (17102)
- Hearing impaired (17092)
- Pastoral care of people with disabilities (17060)
- Church work with the deaf -- Catholic Church (17052)
- Deaf -- Periodicals (17043)
- Athletics (16878)
- Marriage (16192)
- Poetry (15555)
- Students (15203)
- Higher education (14685)
- Female (14631)
- COVID-19 (14487)
- Publication Year
-
- 2026 (118578)
- 2025 (159053)
- 2024 (194794)
- 2023 (164174)
- 2022 (169250)
-
- 2021 (196952)
- 2020 (170156)
- 2019 (166240)
- 2018 (170926)
- 2017 (161803)
- 2016 (160220)
- 2015 (146933)
- 2014 (136912)
- 2013 (131242)
- 2012 (125429)
- 2011 (108882)
- 2010 (104271)
- 2009 (96215)
- 2008 (93184)
- 2007 (79615)
- 2006 (75030)
- 2005 (70590)
- 2004 (71867)
- 2003 (59174)
- 2002 (64926)
- 2001 (55447)
- 2000 (58986)
- 1996 (62755)
- 1992 (53282)
- 1990 (53870)
- Publication
-
- Four Valleys Archive (90475)
- Theses and Dissertations (74552)
- Faculty Publications (46014)
- Electronic Theses and Dissertations (35666)
- University of Montana News Releases, 1928, 1956-present (30912)
-
- Faculty Scholarship (25560)
- Dissertations (23821)
- The Auk (22791)
- Documents (21950)
- Theses (21777)
- Browse All News (21496)
- Articles (19791)
- Walden Dissertations and Doctoral Studies (19777)
- Masters Theses (18671)
- Master's Theses (18449)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (15281)
- Session Laws 1951-2000 (15051)
- NotiSur (13785)
- Faculty, Staff and Student Publications (13701)
- Hillsborough County Marriage Records (13681)
- University of Mississippi News (13497)
- Obituaries (13320)
- The Murray Ledger & Times (13003)
- Sheet Music Collection (12976)
- Defensive Publications Series (12863)
- Michigan Law Review (12811)
- University of Montana Course Syllabi (12469)
- Honors Theses (12170)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (11969)
- Condor (11821)
- Publication Type
Articles 27661 - 27690 of 5209594
Full-Text Articles in Entire DC Network
Multiplexed Plasmon-Enhanced Lateral Flow Assay For Early Diagnosis Of Acute Kidney Injury, Ying Liu, Carissa Ng, Aquiles Payte, Jiaying Xu, Connor Malone, Jie Zhao, Kedhareswara Sairam Pasupuleti, Arda Aidan Arikan, Sameer Thadani, Srikanth Singamaneni, Ayse Akcan Arikan, Limei Tian
Multiplexed Plasmon-Enhanced Lateral Flow Assay For Early Diagnosis Of Acute Kidney Injury, Ying Liu, Carissa Ng, Aquiles Payte, Jiaying Xu, Connor Malone, Jie Zhao, Kedhareswara Sairam Pasupuleti, Arda Aidan Arikan, Sameer Thadani, Srikanth Singamaneni, Ayse Akcan Arikan, Limei Tian
Faculty, Staff and Students Publications
Early diagnosis of acute kidney injury (AKI) remains a major clinical challenge due to the delayed and insensitive nature of conventional markers such as serum creatinine. Urinary protein biomarkers, including neutrophil gelatinase-associated lipocalin (NGAL) and cystatin C (CysC), provide earlier and complementary information on kidney injury, but their clinical translation is limited by the lack of rapid, quantitative, and multiplexed point-of-care (POC) diagnostic tests. Here, we report a multiplexed plasmonic-fluor-based lateral flow assay (p-LFA) that enables sensitive, quantitative, and simultaneous detection of NGAL and CysC. By harnessing ultrabright plasmonic-fluor nanolabels and ratiometric fluorescence analysis, the p-LFA achieves picogram-per-milliliter analytical sensitivity …
A Process For The Preparation Of (S)-3-Amino-3-(4-Chlorophenyl)Propan-1-Ol, Msn Laboratories Private Limited, R&D Center, Hyderabad, India, Srinivasan Thirumalai Rajan, Srinivas Reddy Gade, Suresh Challa.
A Process For The Preparation Of (S)-3-Amino-3-(4-Chlorophenyl)Propan-1-Ol, Msn Laboratories Private Limited, R&D Center, Hyderabad, India, Srinivasan Thirumalai Rajan, Srinivas Reddy Gade, Suresh Challa.
Defensive Publications Series
The present disclosure relates to a process for the preparation of (S)-3-amino-3-(4-chlorophenyl)propan-1-ol of formula-1, which is represented by the following structural formula.
Formula-1
Heterogeneous Graph-Augmented Contrastive Learning For Extreme Multi-Class Fiqh Classification, Ali A. Jalil
Heterogeneous Graph-Augmented Contrastive Learning For Extreme Multi-Class Fiqh Classification, Ali A. Jalil
Al-Bahir
- Background/Introduction: Fine-grained text classification in the field of Islamic Jurisprudence (Fiqh) is difficult because of the structural interdependence of the legal concepts and the extremely multi-class long-tail data distribution (667 classes with 5,979 samples, 52.2% of which contain less than 5 samples). The main problem with traditional flat classifiers is that they assume that target classes are independent and orthogonal output neurons which discards very important relational semantics.
- Objectives: This paper seeks to remediate this extreme imbalance and maintain structural taxonomy by modeling the structural space of classification label space itself as an object to be learned, while giving a …
Differential Topology And The Poincaré-Hopf Theorem, Tara Saini
Differential Topology And The Poincaré-Hopf Theorem, Tara Saini
Rose-Hulman Undergraduate Mathematics Journal
In this paper, we will develop the ideas needed to understand and prove the Poincaré–Hopf Theorem, which connects the local behavior of smooth vector fields to global topological properties. We will begin by introducing smooth manifolds and smooth maps, which are the basis of differential topology. We will then define derivatives of smooth maps through tangent spaces and use these to classify points. To build toward the theorem, we will introduce orientation, degree, and smooth vector fields. These concepts will culminate in a proof of the Poincaré–Hopf Theorem, aided by Brouwer’s Fixed Point Theorem. Finally, we will apply the result …
A Closed Form For The Pulsar Sequence, Ryan Z. Liu
A Closed Form For The Pulsar Sequence, Ryan Z. Liu
Rose-Hulman Undergraduate Mathematics Journal
In this paper, we study the Pulsar Sequence, an integer sequence derived from Latin-square-based “Pulsar puzzles” introduced by the Cracking the Cryptic YouTube channel. A Pulsar puzzle consists of two interlocked spirals of circled and uncircled squares, generating the Dual and Pulsar sequences, respectively. We investigate the properties of the Pulsar puzzle and focus our work on constructing the Pulsar Sequence, allowing us to solve a Pulsar puzzle of any size. A general formula to calculate any term of the Pulsar Sequence is proposed at the end of the paper.
A Categorical Framework For Modeling Genetic Drift, Taylor G. Mendes
A Categorical Framework For Modeling Genetic Drift, Taylor G. Mendes
Rose-Hulman Undergraduate Mathematics Journal
Genetic drift describes changes in allele frequencies that arise from chance sampling in finite populations. This paper develops a categorical framework for organizing the structural features of drift. Population states are modeled as objects, evolutionary transitions as morphisms, reversible transitions as groupoid morphisms, and structure-preserving comparisons between models as functors. Group actions are used to describe deterministic evolutionary operators such as mutation and selection, while orbits and fixed points identify reachable allele-frequency states and stable absorbing outcomes. Universal properties are then used to describe drift as a coherence condition connecting stochastic transitions with deterministic evolutionary maps. The resulting framework complements …
Multiplicity Of Laplacian Eigenvalues That Can Be Represented By Sum Of Two Squares Using Number Theory, Changfeng Zhou
Multiplicity Of Laplacian Eigenvalues That Can Be Represented By Sum Of Two Squares Using Number Theory, Changfeng Zhou
Rose-Hulman Undergraduate Mathematics Journal
In this article, we use results of Number Theory to prove the conjecture on the eigenvalue problem of a 2D elliptic PDE proposed by P.Korman in his recent paper \cite{ref}: for any even integer $2k$, one can find an eigenvalue $N$ that can be represented as $N=a^{2}+b^{2}$, with integers $a\neq b$ with multiplicity $2k$, while for any odd integer $2k + 1$, one can find an integer $M$ that can be represented as $M=a^{2}+b^{2}$ with $a\neq b$ and multiplicity $2k+1$. In addition, the manuscript gives the formula to find those $N$'s.
Symmetries In Apollonian Circle Packings, Clyde Kertzer
Symmetries In Apollonian Circle Packings, Clyde Kertzer
Rose-Hulman Undergraduate Mathematics Journal
An Apollonian circle packing is generated from a Descartes quadruple (a set of four mutually tangent circles) by repeatedly filling the spaces between mutually tangent circles with further tangent circles. By studying the circles' curvatures $a,b,c,d$, two distinct types of symmetric packings appear: one where $a+b+c=d$ and one where $c=d$. We give complete parameterizations of these symmetric packings and count how many packings of each type are contained by a given enclosing circle.
A Complex System Of Grass Seed Drying And Cleaning, Hermann Pohler
A Complex System Of Grass Seed Drying And Cleaning, Hermann Pohler
IGC Proceedings (1977-2023)
Close socialist team-work between science and practice has allowed to develop a complex technology for grass seed handling by which raw seeds of up to 45 % moisture content, as received from the combine harvester, are dried and cleaned. The raw seeds are stored in a fully mechanized, ventilated section for pre-drying. Then, the seed crop is pre-cleaned, dried, and finally cleaned to be ready for dispatch, these operations being done in a continuous process. Apart from grass seeds, other small-seeded crops and coarse-seeded legumes can be handled by this plant. For coarse-seeded legumes it is especially the short distance …
Warm-Air And Forced-Air Ventilation Drying Of Grass Seeds, Werner Maltry
Warm-Air And Forced-Air Ventilation Drying Of Grass Seeds, Werner Maltry
IGC Proceedings (1977-2023)
For the design of warm-air conveyor driers and of ventilated bins to be used for grass seeds drying, certain parameters of the drying characteristics under varying conditions must be known. Investigations in a climatized chamber with seeds from different plant species at varying bulk height, inlet air temperature, and rate of air flow have shown the drying characteristics of a layer to be quite similar to those of a single drying crop. The curve of the drying velocity can be approximated by two branches, a first branch with constant drying velocity and a second straight-lined declining branch. The whole operation …
Problems Of Phytophagous And Pollinating Insect Control Of Seed Lucerne In France, Rene Bournoville, Pierre Guy, Jean-Noel Tasei, Alain Delaude F.N.A.M.S
Problems Of Phytophagous And Pollinating Insect Control Of Seed Lucerne In France, Rene Bournoville, Pierre Guy, Jean-Noel Tasei, Alain Delaude F.N.A.M.S
IGC Proceedings (1977-2023)
This paper is concerned with two factors of lucerne seed yields: phytophagous and pollinator insects. There are three groups of phytophagous insects, i.e. foliage species: Acyrthosiphon pisum, Apion pisi, Hypera variabilis, Colaspidema atrum; gall midges: Dasyneura ignorata, Contarinia medicaginis; and seed pests: Laspeyresia medicaginis, Tychius aureolus, Adelphocoris lineolatus, Lygus rugulipennis, Bruchophagus roddi. Net sweeping, yellow dish trapping, and gall rearing were used for population and flight observation. Laboratory tests were carried out to determine the susceptibility of Miridae bugs, predators, and pollinators to insecticides. The possibility of rearing and multiplying Megachile pacifica was demonstrated. Studies on its local enemies and …
Progress In Grass Seed Production Through Specialization And Concentration, Heinz Hartmann
Progress In Grass Seed Production Through Specialization And Concentration, Heinz Hartmann
IGC Proceedings (1977-2023)
Specialization and concentration •in grass seed production require a long-term development programme. Such development programme has to be put into effect planfully and from year to year by all partners involved. The crews in charge of actual production must be in command of up-to-date seed-growing technologies and see with great continuity to their own further education. Both the farms and nationally-owned enterprises for seed and planting stocks (VEB Saatund Pflanzgut) must be furnished with efficient machinery and other facilities for adequate collection, treatment, and marketing of grass seed. A complex quality-ensuring system has to be established for high-accuracy control and …
The Effect Of Closing Date, Stocking Rate, And Nitrogen Application On Seed And Wool Production From Tall Fescue (Festuca Arundinacea Schreb.) Pastures, Christopher M. Williams, Kevin G. Boyce
The Effect Of Closing Date, Stocking Rate, And Nitrogen Application On Seed And Wool Production From Tall Fescue (Festuca Arundinacea Schreb.) Pastures, Christopher M. Williams, Kevin G. Boyce
IGC Proceedings (1977-2023)
The effects of closing dates, stocking rates, and nitrogen application on seed and wool production of Demeter tall fescue in South Australia are described. Seed production and gross income were greatest at an intermediate closing date (8 September), at the highest level of nitrogen and highest stocking rate. Late closings (6 October and 3 November) resulted in severe depressions in seed yield and gross incomes. Stocking rates of 15 and 30 sheep/ha caused a similar large reduction in seed yield at late closing dates. The gross value of the extra wool produced from late closing date treatments (although up to …
New Problems And Results Of Grass Breeding In The Czechoslovak Socialist Republic, Frantisek Bures
New Problems And Results Of Grass Breeding In The Czechoslovak Socialist Republic, Frantisek Bures
IGC Proceedings (1977-2023)
Turf grass species are among the topics of forage grass breeding in Czechoslovakia at present. Breeding goals, however, are highly differentiated, and testing methods have to be adjusted to that diversity of purposes. Agrostis tenuis Sibth., 'Golf variety, is a perennial turf grass which forms short stolons. Tiller formation has been 263/dm2 on average over several years. Its colour is deep green, and the grass is unpretentious in terms of nutrition and soil. Mean root expansibility is 6.9 per cent, mean tensile strength 3,249 kg/cm2, and average compressive strength 112,768 gcm/cm3. Frequent deep mowing is well tolerated. Variety 'K 7' …
Ms- Based Hybrid Breeding In Lolium Perenne L., Inge Gaue
Ms- Based Hybrid Breeding In Lolium Perenne L., Inge Gaue
IGC Proceedings (1977-2023)
Hybrid breeding in Lolium perenne is possible by use of male sterility (ms). To get a suitable basis for successful breeding it is necessary to search, analyze, and confirm plants with male sterility. Over four years we have developed fixator lines and ms-analogous lines and began to test their combining ability. The analysis of anther design in 16 ms-analogous lines showed the level of sterility to be highest in the whitesteriles. A breeding programme has been developed that makes possible the production of commercial hybrid seed in the 10th year after the beginning of breeding work.
Investigation Of Male Sterility In Lolium Perenne L. As Influenced By Environmental Conditions, Eicke Rudloff
Investigation Of Male Sterility In Lolium Perenne L. As Influenced By Environmental Conditions, Eicke Rudloff
IGC Proceedings (1977-2023)
By means of a classification of anther design, field-grown male sterile clones of Lolium perenne were found to differ greatly from greenhousegrown clones as to their variability in the phenotypic manifestation of sterility (PMS). Only 8.7 % white-steriles were found as compared with the results obtained from field assessment. White-steriles were also found in plants that showed a different PMS in the field. In the greenhouse, up to 93 p.c. of the plants were fertiles, with several provenances producing no fertile phenotypes at all. This is indicative of the fact that PMS would be influenced by the genotype. Additional nitrogen …
Particularities Regarding The Manifestation Of Cytoplasmic Male Sterility In Dactylis Glomerata L., Grigori Kuleshov, Aelita Kremnina, Valentina Korovina
Particularities Regarding The Manifestation Of Cytoplasmic Male Sterility In Dactylis Glomerata L., Grigori Kuleshov, Aelita Kremnina, Valentina Korovina
IGC Proceedings (1977-2023)
Chemical mutagenics were found to induce male sterility in M1 of Dactylis glomerata L., this character being transmitted in the following generations under conditions of open pollination and pair matings. The respective segregations in the families obtained from test crossings, open pollination, and pair matings of sterile plants, and the existence of sterility fixers allow to suppose that in M1, M2, and M3 the sterile forms have cytoplasmic male sterility and are represented by recessive homozygotes with sterile cytoplasm. The study of the meiosis of the male-sterile forms induced by chemical mutagenics has revealed that disturbances in the course of …
Association And Breeding In Cocksfoot (Dactylis Glomerata L.), P Rotili, L Zannone
Association And Breeding In Cocksfoot (Dactylis Glomerata L.), P Rotili, L Zannone
IGC Proceedings (1977-2023)
The aim of this study was to know the importance of the progeny association effects in the evaluation of the combining ability of the parents. The experiment included eight pure stands and twenty-eight binary mixtures. General domination ability was considerably larger than general association ability. This is due to the fact that situations of competition were generally observed. A good similarity of ranking in pure stand and in mixture was observed. In conclusion, the association effects are not important in the evaluation of the combining ability of the parents.
Influence Of Origin And Arrangement Of Components In Hybridization Nursery On The Performance Of A Synthetic Population Of Alfalfa (Medicago Varia Martyn.), Jan Rod
IGC Proceedings (1977-2023)
Using 7 clones and their immediate progenies (strains), two conforming hybridization nurseries were laid out. The components crossed were planted in close pairs without mutual space isolation but with one meter distance between the pairs. Arrangement corresponded with a Greek-Latin square with two replications of the same combination. Under conditions of open pollination, seed setting was lower in the clone nursery. A performance decline took place in strain progenies, i.e. in the generation after one reproduction. Replication of the same combination was typical in both cases. The differences between the performance of progenies of individual combinations show that, using the …
Acceleration Of Red Clover Breeding (Trifolium Pratense Subvar. _Praecox Witte) By Inclusion Of Greenhouse-Grown Generations, Rolf Gaue, Warner Schweiger
Acceleration Of Red Clover Breeding (Trifolium Pratense Subvar. _Praecox Witte) By Inclusion Of Greenhouse-Grown Generations, Rolf Gaue, Warner Schweiger
IGC Proceedings (1977-2023)
An outline is given of several possibilities for shortening the breeding period by using methods of generation acceleration in red clover under artificial environmental conditions in the greenhouse. It is possible both to realize complete reproduction cycles in the greenhouse within 120 and 180 days, and to produce clover seed within 80 days when using plants that had already passed preliminary field selection for seed productivity. Details of the rearing conditions, of the illumination period, and of the sources of light used illustrate the effect of the varied environmental conditions. Honey bees have successfully been used for pollination.
Breeding Tall Fescue (Festuca Arundinacea Schreb.) And Cocksfoot (Dactylis Glomerata L.) For Seedling Establishment Under Conditions Of Competition, Samuel Badoux
IGC Proceedings (1977-2023)
Possibilities of breeding tall fescue (Festuca arundinacea Schreb.) and cocksfoot (Dactylis glomerata L.) for a better establishment rate were studied under conditions of competition. Tall fescue selection for seedling fresh weight and tiller number was conducted for 3 generations. For both characters, estimates of heritability h2 = 0.57 and h2 = 0.33, respectively, were obtained. The date of appearance of the first tiller was highly correlated with tiller number two months after sowing. Cocksfoot varieties with a rapid establishment in greenhouse experiments presented a higher proportion of cocksfoot when used as a compound of a seed mixture.
Results Regarding The Accelerated Production Of Complete Generations Of Lolium Perenne L. And Dactylis Glomerata L. Under Artificial Climate, Joachim Buhring, Karin Neubert
Results Regarding The Accelerated Production Of Complete Generations Of Lolium Perenne L. And Dactylis Glomerata L. Under Artificial Climate, Joachim Buhring, Karin Neubert
IGC Proceedings (1977-2023)
Studies were performed on Lolium perenne L. and Dactylis glomerata L. for accelerated production of plant generations. Flowering of Lolium perenne - was induced in single-leaf seedlings by 65-day vemalization at + 4.5 °C, short-day conditions, and low intensity of illumination (30 microeinsteins • m-2 • s- 1 ). In Dactylis glomerata, flowering was achieved within 100 days by vernalization at low to medium temperatures, short-day conditions, and high intensity of illumination (440 microeinsteins • m-2 • s- 1). Accordingly, by means of refrigerators for producing low temperatures during vernalization and with artificial light, one generation of Lolium perenne can …
Evaluation Of Quality Factors In Warm Season Forages, Warren G. Monson, Gkenn W. Burton, Wayne W. Hanna
Evaluation Of Quality Factors In Warm Season Forages, Warren G. Monson, Gkenn W. Burton, Wayne W. Hanna
IGC Proceedings (1977-2023)
Improved forage quality is a feasible objective. Coastcross-1 bermudagrass, Cynodon dactylon (L.) Pers., selected for high dry matter digestibility, has consistently enhanced the performance of the animals consuming it. Variation in quality factors of other species, particularly Paspalum notatum var. Saurae Parodi and Pennisetum americanum (L.) K. Schum., makes it possible to improve digestibility. Pearl millet varieties with improved animalproduction potential have been developed and released for farmer use. The varieties have been selected for higher digestibility and short stature, with reduced stem fractions. The assessment of the digestion of fresh forage permits evaluation of the effects of other factors, …
Intra-Specific Variation In Rates Of Dark Respiration And Of Photosynthesis At Low Positive Temperatures In Festuca Rubra L., William S. Stewart, John H. Ollerenshaw
Intra-Specific Variation In Rates Of Dark Respiration And Of Photosynthesis At Low Positive Temperatures In Festuca Rubra L., William S. Stewart, John H. Ollerenshaw
IGC Proceedings (1977-2023)
Low temperature is a primary limiting factor to the growth of grass in the uplands of Britain. Types better able to grow at low temperature are required for the extension of the growing season. Higher rates of dark respiration are considered to be an adaptation to growth at low temperature. An ecotype of Festuca ruhra L. from a cold environment is shown to have higher rates of dark respiration, photosynthesis, and growth at low temperature than one from a warmer habitat. Observation of this kind may form the basis of a laboratory test for rapidly selecting ecotypes able to grow …
The Inheritance Of Sodium Content In The Dry Matter Of Dactylis Glomerata L., Jaroslav Nasinec, Vaclav Mika
The Inheritance Of Sodium Content In The Dry Matter Of Dactylis Glomerata L., Jaroslav Nasinec, Vaclav Mika
IGC Proceedings (1977-2023)
Experiments were carried out about the individual composition of the variety 'Milona', its parental varieties 'Aberystwyth Sl43' and 'Welta', and random-selection cross progenies which took part in the formation of the population of 'Milona'. It was stated that the intermediary character of the Na content of 'Milona' is not due to a medium or nearly medium Na content of the individual plants, but is expressed by the number of single plants whose Na content exceeds the limit of 0.015 % in the third cut. 'Aberystwyth S 143' and some progenies in which A-S 143 was used as mother plant, are …
An Approach To Evaluate A Large Number Of Mixtures Under Grazing, Warwick Harris
An Approach To Evaluate A Large Number Of Mixtures Under Grazing, Warwick Harris
IGC Proceedings (1977-2023)
A technique is described to evaluate under grazing the large number of mixtures of grass and legume possible with the increasing numbers of herbage cultivars. Measurements were made under sheep grazing with and without applied nitrogen of the component species yields of 15 grass and legume monocultures and their 54 grass-legume mixtures. Data from the final grazing of the establishment year were examined for interactions between the competing grasses and legumes using regression analysis. The coITelation between cultivar yield and suppressive effect on associates in mixture was strongly negative. Interactions between yield and associate effects observed were related to seasonal …
Preliminary Selection Of Rye Grass Plants For Mg Accumulating Ability, D.W A. Lane, C A. Lamp
Preliminary Selection Of Rye Grass Plants For Mg Accumulating Ability, D.W A. Lane, C A. Lamp
IGC Proceedings (1977-2023)
The selection of clones of perennial ryegrass (Lolium perenne) containing a higher than normal concentration of magnesium in the foliage was seen as one approach to assisting the alleviation of magnesium deficiency (hypomagnesaemia) in grazing ruminants. Selection of such material has an unusual feature in that the levels of magnesium concerned are luxury to the ryegrass plant. Twelve commercial cultivars from England, Wales, New Zealand, and Australia were compared in an initial pot experiment. Although no exploitable variation in the magnesium level of these cultivars was found, further screening uncovered a stable 25 % difference between clones from …
Improving Water Use Efficiency Of Smooth Bromegrass By Selecting For Regrowth, D F. Gross, J G. Ross
Improving Water Use Efficiency Of Smooth Bromegrass By Selecting For Regrowth, D F. Gross, J G. Ross
IGC Proceedings (1977-2023)
A cultivar of the cool-season grass species smooth bromegrass (Bromus inermis Leyss.), designed to be more efficient in water use for summer pasture, was selected from a source nursery of 37,000 plants grown under near optimum moisture and fertility. From this nursery 69 genotypes superior for regrowth were placed in the greenhouse and tested for regrowth, net carbon dioxide exchange (NCE) rates, and other characteristics relevant to regrowth. On the basis of performance 32 genotypes were selected and vegetatively reproduced for inclusion in a field test, again under optimum conditions of moisture and fertility. Two harvests were made in …
The Breeding Of Tetraploid Alsike Clover (Trifolium Hybridum L.) For Mowing And Grazing, Vladimir Malashenko, Svetlana Cheprasova, Antonina Fadeeva
The Breeding Of Tetraploid Alsike Clover (Trifolium Hybridum L.) For Mowing And Grazing, Vladimir Malashenko, Svetlana Cheprasova, Antonina Fadeeva
IGC Proceedings (1977-2023)
An account is given of the long-range importance that should be attributed to the use of No. 701 tetraploid alsike clover as an early maturity, fast-growing, high-yield competitive leguminous plant for irrigated pastures and arable forage cultivation.
Leguminous plants are of very great importance to forage production at large. They actually constitute a major source for nitrogen supply. This underlines their decisive role in grassland farming as a device by which to get to grips with the nitrogen deficit. Pasture productivity can best be improved by proper arrangement of plant associations with forage crop partners of the legume family which …