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2024

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Incorporating Neutrosophic Uncertainty In Data Envelopment Analysis, A. Almutairi, Hamiden Abd El-Wahed Khalifa, Basma E. El-Demerdash Oct 2024

Incorporating Neutrosophic Uncertainty In Data Envelopment Analysis, A. Almutairi, Hamiden Abd El-Wahed Khalifa, Basma E. El-Demerdash

Neutrosophic Sets and Systems

In the realm of Data Envelopment Analysis (DEA), the assessment of relative efficiency has historically relied on deterministic variables. Yet, real-world data often presents diverse uncertainties, including a neutrosophic nature, which can significantly impact the accuracy and reliability of DEA outcomes. Therefore, the current paper proposes a new DEA model entirely to address this issue and in new DEA model designed to address this issue, preexisting approaches that fall short due to the inability to address neutrosophic uncertainty, which can be commonly found in actual data, to enhance efficiency evaluation precision. This paper introduces the new DEA model to show …


Combining Two Auxiliary Variables For Elevated Estimation Of Finite Population Mean Under Neutrosophic Framework, Poonam Singh, Sooraj Gupta Oct 2024

Combining Two Auxiliary Variables For Elevated Estimation Of Finite Population Mean Under Neutrosophic Framework, Poonam Singh, Sooraj Gupta

Neutrosophic Sets and Systems

Typically, most researchers rely on precise data for estimating population parameters using classical statistical methods. However, there are scenarios where dealing with uncertain and imprecise data in the form of intervals becomes necessary. To tackle this challenge, various adaptations of classical estimators, such as the neutrosophic ratio estimator and their improved ones, have emerged. This article introduces a novel estimator known as the neutrosophic ratio-cum-product exponential estimator combining two auxiliary variables, specifically designed for the elevated estimation of population mean in such situations. Performance evaluation is conducted using metrics like Mean Square Error (MSE) and Percentage Relative Efficiency (PRE). The …


Predicting Student Behavior Using A Neutrosophic Deep Learning Model, Ahmed Mohamed Shitaya, Mohamed El Syed Wahed, Saied Helemy Abd El Khalek, Amr Ismail, Mahmoud Y.Shams, A. A. Salama Oct 2024

Predicting Student Behavior Using A Neutrosophic Deep Learning Model, Ahmed Mohamed Shitaya, Mohamed El Syed Wahed, Saied Helemy Abd El Khalek, Amr Ismail, Mahmoud Y.Shams, A. A. Salama

Neutrosophic Sets and Systems

We developed an information system using an object-oriented programming language and a distributed database (DDB) consisting of multiple interconnected databases across a computer network, managed by a distributed database management system (DDBMS) for easy access. An intelligent system was designed to assess the difficulty level of preliminary exams and select top-performing advanced students using a Neutrosophic Deep Learning Model. The dataset was randomly split into training (80%) and testing (20%) sets, and the model, trained with the Adam optimizer at a 0.001 learning rate over 50 epochs, incorporated early stopping based on validation loss. This system, implemented at a traditional …


An Evaluation Method For University Classroom Education Quality Under Machine Vision And Single-Valued Neutrosophic Hesitant Fuzzy Set Environment, Rui Wang, Mingjie Li, Fangwei Zhang, Yiying Pan, Zongao Zhang Oct 2024

An Evaluation Method For University Classroom Education Quality Under Machine Vision And Single-Valued Neutrosophic Hesitant Fuzzy Set Environment, Rui Wang, Mingjie Li, Fangwei Zhang, Yiying Pan, Zongao Zhang

Neutrosophic Sets and Systems

With the advancement of artificial intelligence, machine vision offers a novel approach to university teaching quality evaluation (TQE). However, existing studies are often hindered by subjectivity and lack of standardized evaluation methods, which impede accurate assessment of student learning effectiveness. Therefore, this study addresses these limitations by proposing a TQE framework that integrates machine vision with single-valued neutrosophic hesitant fuzzy sets (SVNHFSs). Specifically, the main contributions of this study are as follows. First, this study innovatively employs machine vision to capture student learning behaviors, constructing a classroom behavior matrix that serves as the foundation for evaluation. Second, this study introduces …


Multiple-Attribute Decision Making Based On Novel Single Valued Neutrosophic Aczel-Alsina Power Muirhead Mean Operators, Peide Liu, Qaisar Khan, Rashid Ali, Hidayat Ullah, Rashid Jan Oct 2024

Multiple-Attribute Decision Making Based On Novel Single Valued Neutrosophic Aczel-Alsina Power Muirhead Mean Operators, Peide Liu, Qaisar Khan, Rashid Ali, Hidayat Ullah, Rashid Jan

Neutrosophic Sets and Systems

Neutrosophic multiple-attribute decision making (MADM) is one of the major study areas in ambiguous and inconsistent decision-making problems. The single-valued neutrosophic number (SVNN), which is an expansion of the fuzzy number, intuitionistic fuzzy number, can handle difficulties involving a huge quantity of erroneous, partial, and inconsistent information. To address the multi-criteria decision-making problems, novel aggregation operators (AGOs) are proposed in this article considering the benefits of the SVNN. The new AGOs consider the interrelationship involving any number of input data and can remove the effect of unreliable data. This article adds the Aczel-Alsina (AA) operations to increase the flexibility of …


Solving The Shortest Path Problem In An Interval-Valued Neutrosophic Pythagorean Environment Using An Enhanced A* Search Algorithm, Prasanta Kumar Raut, Sakya Singh Satapathy, Siva Prasad Behera, Said Broumi, Ajay Kumar Sahoo Oct 2024

Solving The Shortest Path Problem In An Interval-Valued Neutrosophic Pythagorean Environment Using An Enhanced A* Search Algorithm, Prasanta Kumar Raut, Sakya Singh Satapathy, Siva Prasad Behera, Said Broumi, Ajay Kumar Sahoo

Neutrosophic Sets and Systems

The A* search algorithm is widely utilized to evaluate the shortest path in a given network. However, in a traditional A* search algorithm, the nodes are assumed to have crisp values, i.e., a single value. This assumption may not hold in many real-world scenarios where uncertainty or ambiguity is involved. In such cases, an interval-valued Neutrosophic Pythagorean (IVNP) environment can provide a more sound and accurate representation. Interval-valued Neutrosophic Pythagorean sets (IVNPS) are an effective way to model vague and imprecise data, which is prevalent in executive problems. These sets provide a more flexible way to capture uncertainty by allowing …


Intelligent Framework For Regional Tourism Ecological Efficiency Evaluation Under High-Quality Development With Single-Valued Neutrosophic Information, Xiaoying Liu Oct 2024

Intelligent Framework For Regional Tourism Ecological Efficiency Evaluation Under High-Quality Development With Single-Valued Neutrosophic Information, Xiaoying Liu

Neutrosophic Sets and Systems

The evaluation of regional tourism ecological efficiency (RTEE) under high-quality development aims to measure how the tourism industry promotes economic growth while minimizing resource consumption and environmental impact. By analyzing economic output per unit of carbon emissions, it assesses the sustainability and environmental performance of the tourism sector. This evaluation method considers resource utilization, energy efficiency, and ecological protection, helping decision-makers optimize tourism development models, achieve a balance between economic and ecological benefits, and promote the transition of tourism towards a low-carbon, green, and high-quality direction. The RTEE evaluation under high-quality development is MADM. The single-valued neutrosophic number generalized power …


Optimizing Network Structures Through Neutrosophic Graph Product Operations And Its Coloring: A Comprehensive Approach For Enhanced Connectivity And Robustness, A. Meenakshi, S. Dhanushiya Oct 2024

Optimizing Network Structures Through Neutrosophic Graph Product Operations And Its Coloring: A Comprehensive Approach For Enhanced Connectivity And Robustness, A. Meenakshi, S. Dhanushiya

Neutrosophic Sets and Systems

Optimal network analysis requires advanced techniques to handle the inherent complexity and uncertainty of real-world systems. We have used vertex order coloring on neutrosophic graphs to find the most effective approach to improve network reliability and performance. Neutrosophic graphs( ) offer a comprehensive framework for modelling real-world networks with inherent uncertainties by incorporating degrees of truth, falsity, and indeterminacy. In this paper, we have investigated various graph product operations as a means of optimizing network structures. We further investigated the applications of vertex order coloring to identify and within various graph operations of . We examined several strong vertices products …


Construction Of Almost Unbiased Estimator For Population Mean Using Neutrosophic Information, Rajesh Singh, Anamika Kumari, Florentin Smarandache, Shobh Nath Tiwari Oct 2024

Construction Of Almost Unbiased Estimator For Population Mean Using Neutrosophic Information, Rajesh Singh, Anamika Kumari, Florentin Smarandache, Shobh Nath Tiwari

Neutrosophic Sets and Systems

In classical statistics, the population mean is estimated using determinate, crisp data value when auxiliary information is known. These estimates can often be biased. The main objective of this study is to introduce the neutrosophic estimator with the minimum mean squared error (MSE) for the unknown value of the population mean as well as overcome the limitations of classical statistics when dealing with ambiguous or indeterminate data. Neutrosophic statistics was introduced by Florentin Smarandache. It is a generalisation of classical statistics that addresses ambiguous, unclear, vague, and indeterminate data. In this study, we have proposed neutrosophic almost unbiased estimator that …


Cross-Entropy Method Adapted For Evaluating The Teaching Quality Of University Physical Education Utilizing 2-Tuple Linguistic Neutrosophic Sets, Mengjun Wu, Yonghui Feng Oct 2024

Cross-Entropy Method Adapted For Evaluating The Teaching Quality Of University Physical Education Utilizing 2-Tuple Linguistic Neutrosophic Sets, Mengjun Wu, Yonghui Feng

Neutrosophic Sets and Systems

The evaluation of university physical education teaching quality helps measure the actual effectiveness of the courses and ensures the achievement of teaching objectives. Through evaluation, schools can identify deficiencies in teaching and make improvements, enhancing students' physical fitness and health. Additionally, evaluation provides data support for teaching reforms, aiding in curriculum optimization and strengthening faculty, thereby promoting the comprehensive development of physical education and fostering students' lifelong awareness of fitness and healthy lifestyles. The teaching quality evaluation of university physical education adopts the multiple attribute group decision-making (MAGDM) approach. Currently, cross-entropy (CE) model was constructed to handle the MAGDM. To …


A Python Class For Neutrosophic Morphology, Lorenzo Affe, Giorgio Nordo, Florentin Smarandache Oct 2024

A Python Class For Neutrosophic Morphology, Lorenzo Affe, Giorgio Nordo, Florentin Smarandache

Neutrosophic Sets and Systems

In this work, we introduce a Python class, named NSmorph, developed to facilitate image manip ulation through neutrosophic morphological operations. This innovative approach extends traditional image processing methods by leveraging the flexibility of neutrosophic logic to handle uncertainty, indeterminacy, and noise in digital images. The class offers implementations of essential morphological operators, such as neu trosophic dilation, erosion, opening, and closing, providing a robust tool for applications where image clarity is often compromised, like medical imaging and surveillance. We detail the class structure and functions and provide multiple examples to demonstrate its practical applications and comparative advantages over classical morphological …


Comprehensive Framework For Collaborative Decision-Making In Evaluating Computer Network Security Using Interval Neutrosophic Information, Wenbao Qiao Oct 2024

Comprehensive Framework For Collaborative Decision-Making In Evaluating Computer Network Security Using Interval Neutrosophic Information, Wenbao Qiao

Neutrosophic Sets and Systems

Computer network security (CNS) evaluation is crucial for protecting information assets and maintaining the stable operation of network systems. Through this evaluation, potential threats and vulnerabilities within the network can be systematically identified, effectively preventing possible cyber-attacks and data breaches. Additionally, network security evaluation helps enterprises and organizations allocate security resources appropriately, enhancing their ability to respond to emergencies and ensuring business continuity and data integrity. In summary, network security evaluation is one of the foundational tasks for achieving continuous, secure, and stable network operations. The CNS evaluation is multiple-attribute group decision making (MAGDM). Then, the generalized TODIM(GTODIM) approach has …


On Some Novel Results About The Behavior Of Some Numerical Solutions Of A Neutrosophic Generalized Half – Linear Second Order Differential Equation, Norah Mousa Alrayes, Mayada Abualhomos, Mutaz Mohamed Abbas Ali, Amani Shatarah, Mai Mousa Mahmoud Alhejoj, Abdallah Al-Husban Oct 2024

On Some Novel Results About The Behavior Of Some Numerical Solutions Of A Neutrosophic Generalized Half – Linear Second Order Differential Equation, Norah Mousa Alrayes, Mayada Abualhomos, Mutaz Mohamed Abbas Ali, Amani Shatarah, Mai Mousa Mahmoud Alhejoj, Abdallah Al-Husban

Neutrosophic Sets and Systems

The generalized neutrosophic differential equation is a differential equation with with ��(�� +����) = ��(��+����)−��(��+����)��(��(��+����)) , Where we illustrate a numerical approach for the oscillation with indeterminacy element that represents the neutrosophic approach. neutrosophic real variable x + yI instead of classical real variable x. This research is devoted to studying the oscillation of generalized neutrosophic half linear second order differential equation with the negative and delayed neutral term as follows: (��(�� +����)��´(�� +����))´ +c(�� +����)��(��(��(�� +����)) ,��(�� +����)��´(�� +����)) = 0 . Also, the generalized neutrosophic half–linear differential equation of the second order with max term featured by the …


Examination Of Musical Sophistication And Working Memory Correlates In High School Students, Abby South Oct 2024

Examination Of Musical Sophistication And Working Memory Correlates In High School Students, Abby South

LSU Doctoral Dissertations

Abstract

The purpose of this study was to examine the relationship between musical engagement and cognitive ability in high school students. While musicians’ brains have long been of interest to those who study experience-dependent neuroplasticity, a lack of adolescent data grossly limits our understanding of the relationship between music training and observed neuroplastic changes in the brain. Advances in psychometric testing and brain imaging reveal relationships among musical expertise, changes in brain function, structure, and connectivity, and enhanced cognitive ability, but categorical groupings of dichotomously defined musicians and non-musicians prevent nuanced understanding of these complex relationships. In this study, 83 …


Editorial: Exploring The Potential Of Nanobiomaterials In Biomedical Engineering: Assessing Biocompatibility, Toxicity, And Future Prospects, Narsimha Mamidi, Ebrahim Mostafavi, Murali M. Yallapu Oct 2024

Editorial: Exploring The Potential Of Nanobiomaterials In Biomedical Engineering: Assessing Biocompatibility, Toxicity, And Future Prospects, Narsimha Mamidi, Ebrahim Mostafavi, Murali M. Yallapu

School of Medicine Publications

No abstract provided.


Review Of Current Trends In Information Technology Concerning Phonetic Similarity”, Zaid Rajih Mohammed, Ahmed H. Aliwy Oct 2024

Review Of Current Trends In Information Technology Concerning Phonetic Similarity”, Zaid Rajih Mohammed, Ahmed H. Aliwy

Al-Bahir

With the increasing availability of textual information in various languages via the Internet in homes and companies through Internet and intranet services, there is an urgent need for the technologies and tools necessary to process this information, phonetic representation, and voice interaction. For example voice to voice machine translation need to phonetic mapping and similarity among the languages especially for names and foreign words. This one example of the importance of phonetic mapping and similarity. This article aims to describe, in detail, the recent surge in interest and advancements in phonetic similarity (PS), phonetic representation, and phonetic mapping researches. PS …


Collaborating Across Academic Units: The Mississippi State University Erle Project, Lis Pankl, Jason M. Keith Oct 2024

Collaborating Across Academic Units: The Mississippi State University Erle Project, Lis Pankl, Jason M. Keith

Collaborative Librarianship

Mississippi State University (MSU), a public land-grant institution with Very High Research Activity (R1) as classified by the Carnegie Classification of Institutions of Higher Education, is developing and implementing a new transformative strategic plan to further emphasize collaborative, experiential learning to prepare students for relevant careers upon graduation. As an institution located in a rural part of the southeastern United States in an underserved state, first-to-second year student retention rates and six-year graduation rates have been lower than those of peer and peer-plus universities. As such, the university administration has challenged its faculty and academic leaders to think creatively for …


The Evolution Of Community Engagement Strategies In The Context Of Advancements In Artificial Intelligence Technologies, Erika Grodzki, Stefanie Powers, Gary Carlin, Hung Chum Kao Oct 2024

The Evolution Of Community Engagement Strategies In The Context Of Advancements In Artificial Intelligence Technologies, Erika Grodzki, Stefanie Powers, Gary Carlin, Hung Chum Kao

Faculty and Staff Publications & Presentations

As the AI landscape continues to evolve, the need for communities to nurture, inform, and challenge these technologies becomes paramount. This panel addresses the importance of traditional and AI driven strategies in terms of community engagement. Four case studies are reviewed to show how AI technologies are being implemented in communities. While AI offers numerous benefits, it is important not to overlook the value of human interaction in building and maintaining thriving community engagement. AI cannot replicate emotional intelligence and authentic relationship building - critical components of community engagement.


Stand Age And Closing Date Effects On Seed Yield Of Caucasian And Zigzag Clover Cultivars, G T. Daly, Jiwan Gurung, R J. Lucas Oct 2024

Stand Age And Closing Date Effects On Seed Yield Of Caucasian And Zigzag Clover Cultivars, G T. Daly, Jiwan Gurung, R J. Lucas

IGC Proceedings (1977-2023)

Seed yields of Caucasian clover (Trifolium ambigum} and zigzag clover (T. medium) were obtained over 3 seasons. The effects of 6 closing times in the final year were also measured. Caucasian clover cv. Alpine flowered earlier than cv. Monaro and the zigzag clover lines were last to flower. Seed yield of Monaro Caucasian clover in the second and third seasons averaged 400 kg/ha while cv. Alpine produced a maximum of 355 kg seed/ha. Pests and poor pollination were the major limitations lo high yields of zigzag clover seed. Kentucky zigzag clover produced 300 kg seed/ha when seed …


Breeding Hexaploid Pennisetums For Improved Seed Production, D A. Diz, S C. Schank Oct 2024

Breeding Hexaploid Pennisetums For Improved Seed Production, D A. Diz, S C. Schank

IGC Proceedings (1977-2023)

Interspecific hybrids between pearl millet (Pennisetum glacum) and elephantgrnss (P. purpureum) have many desirable characteristics, but they are sterile and do not have the ability to reproduce subsequent generations from seed. To overcome this barrier, we have obtained fertile hexaploids and have begun a breeding and selection programme among hexaploid progeny which produce seed. Seven hexaploid genotypes were selected and characterised as to panicle, seed and seedling traits. Weight of 100 seeds ranged from 0.152 to 0.247 g for the different genotypes. The number of seed harvested varied from 190 to over 700 per panicle. Germination of …


Herbage Seed Production In Norway, Ragnar Hillestad Oct 2024

Herbage Seed Production In Norway, Ragnar Hillestad

IGC Proceedings (1977-2023)

Seed of all important species of perennial grasses and clover for northern areas can be produced in Norway, with good quality, at about 60°N. Norway has built up its own plant breeding with seed production and is self-supporting in seed of the most important species for use in agriculture. The seed yield per area unit of grass species decreases from south lo north, but there are differences among cullivars depending on where the breeding work has been carried out. The short growing·season makes it difficult for some species to establish a good stand so the plants can flower and give …


Effect Of Propiconazole And Tebuconazole On Seed Production Of Tall Fescue, M D. Hare Oct 2024

Effect Of Propiconazole And Tebuconazole On Seed Production Of Tall Fescue, M D. Hare

IGC Proceedings (1977-2023)

When stem rust (Puccinia graminis Persoon) invaded a tall fescue (Festuca arrundinacea Schreb.) stand a fungicide, propiconazole, applied at 250 g ai/ha, increased seed yields by more than l000 kg/ha compared with untreated plots. Propiconazole applied at ear emergence increased seed yields more than when applied at anthesis or at both times. Propiconazole significantly (P<0.05) increased seeds/spikelet and reduced leaf senescence during seed development and at harvest compared with untreated plots. Stem rust (Puccitiia graminis Persoon) severely infected the control plots but not the plots treated with propiconazole at ear emergence. In a second trial, when only a minor trace of stem rust was observed, propiconazole and tebuconazole did not affect seed yields of tall fescue.


Effect Of Time And Rate Of Application Of The Growth Regulators Paclobutrazol And Flurprimidol On Seed Yield In Tall Fescue, M D. Hare Oct 2024

Effect Of Time And Rate Of Application Of The Growth Regulators Paclobutrazol And Flurprimidol On Seed Yield In Tall Fescue, M D. Hare

IGC Proceedings (1977-2023)

Paclobutrazol and flurprimidol were applied to a mature stand of tall fescue (Festuca anmdi11acea Schreb. cv. Grasslands Roa) at l and 2 kg ai/ha at spikelet initiation (SI) and floret initiation (Fl) in 1985. Paclobutrazol at 2 kg ·ai/ha, applied at both SJ and FI, increased P(<0.05) seed yields but the lower paclobutr z I rate and flurprimidol had no significant effect on seed yields.


Effect Of Boron And Nitrogen Application On Seed Production Of Lotus Uliginsus, M D. Hare, R A. Carran Oct 2024

Effect Of Boron And Nitrogen Application On Seed Production Of Lotus Uliginsus, M D. Hare, R A. Carran

IGC Proceedings (1977-2023)

Four rates or boron (B) and 2 rates of nitrogen (N) were applied to a mature stand of lotus 11ligi11os11s Schk. cv. Grasslands Maku before flowering, on 10 November 1988. The 2 rntes of N (40 and 80 kg N/ ha) were either applied once or applied at 5 and 10 kg N/ha respectively, at weekly intervals for 8 weeks. N did not increase seed yields. Weekly applications of N significantly (P<0.05) decreased seed yields by 28%. B at 0.91 kg/ha increased seed yields by 7% but this increase was not significant. While seed yields in some tropical legumes may benefit from N application, Grasslands Maku does not benefit. Rather, seed yields are depressed. The application of B did not significantly change seed yields, but more research on B may be needed in areas where B availability is thought to be low.


Effects Of Defoliation Intensity, Frequency And Time Of Final Defoliation Of Seed Yield Of Barrel Medic, F N. Muyekho, E D. Carter, G K. Mcdonald Oct 2024

Effects Of Defoliation Intensity, Frequency And Time Of Final Defoliation Of Seed Yield Of Barrel Medic, F N. Muyekho, E D. Carter, G K. Mcdonald

IGC Proceedings (1977-2023)

Swards of barrel medic (Medicago truncatula cv. Parnggio), sown at 20 kg/ha (1990), or 20 kg/ha or 200 kg/ha ( 1991 ), were mown to 3 or 6 cm height at intervals up to flowering, or 10 or 20 days after the start of flowering. In 1990, the swards were heavily grazed in July before imposing the defoliation treatments; in 1991 the swards were mown to 3 cm once in July. The responses to defoliation differed between the 2 years, because of the vigour of the sward at the time of imposing the cutting treatments. In 1990 severe defoliation …


White Clover Seed Production In Northern Italy: Yield And Components For Five Cultivars, Renato Paoletti, Carla Locattello Oct 2024

White Clover Seed Production In Northern Italy: Yield And Components For Five Cultivars, Renato Paoletti, Carla Locattello

IGC Proceedings (1977-2023)

Two medium- (Hollandicum) nnd 3 large-leaved white clover (Trifolium repens.v L.) cultivar types (Ladino) were assessed for seed yield and components during 1988-1991, at Lodi (Po Valley). Dry matter yield wns also evaluated. The analysis of components showed significant (P=0.05) differences among the tesled cul ti vars. The large­lenved varieties Espana and Regal had the highest number of ripe heads/m2 and number of florets/head. The medium-leaved varieties Merwi RvP and Olwen showed good values for seed set only. As to potential and actual seed yield in the first harvesting year, Espanso and Regal were significantly the highest seed …


Creeping Bentgrass Seed Production In Western In Western Canada, S R. Smith Jr, D J. Cattani Oct 2024

Creeping Bentgrass Seed Production In Western In Western Canada, S R. Smith Jr, D J. Cattani

IGC Proceedings (1977-2023)

Creeping bentgrass (Agrostis stolonifera L.) is an important species for golf courses and high value turfgrass areas throughout the world. Most of the seed production for this species is in the state of Oregon, but there is potential for seed production in western Canada. The objective of this research was to determine the potential for creeping bentgrass seed production in Manitoba under dryland conditions through cultivar evaluation trials and management studies including: optimal seeding dates, seeding rates, row spacings, nitrogen fertiliser and stand renovation. The results of these studies suggest a 1 kg/ha seeding rate and 30-cm row spacing, …


The Potential Of Weed Control To Improve Seed Production In Selected Tropical Forage Legumes, S Kachelriess, S A. Tarawali Oct 2024

The Potential Of Weed Control To Improve Seed Production In Selected Tropical Forage Legumes, S Kachelriess, S A. Tarawali

IGC Proceedings (1977-2023)

Trials have been conducted in the subhumid zone of Nigeria to assess the potential of different weed control methods to improve seed quantity and quality using three tropical forage legumes: Centrosema pascorum cv. Cavalcade, Chamaecrista rotundifolia cv. Wynn and Stylosanthes hamata cv. Verano. Manual weeding was done at different times and intervals during the growing season and a range of herbicides was tested at different application rates and times. Manual weeding generally produced higher seed yields and purity if plots were weeded in the early and mid growing season. Intervals between weedings and the frequency of weeding was …


Ovule Fertility - A Tool For Selecting High-Fertility Populations Of White Clover, S V. Pasumarty, T Matusmura, S Higuchi Oct 2024

Ovule Fertility - A Tool For Selecting High-Fertility Populations Of White Clover, S V. Pasumarty, T Matusmura, S Higuchi

IGC Proceedings (1977-2023)

A field experiment was conducted lo clarify the factors responsible, for poor seed set in 4 white clover (Trifolium repens L.) cultivars. Although the mean number of ovules per floret was 5.18-5.29, lhe average number of seeds per floret was found to be only 1.23-1.82. A' stain-clearing technique was used to examine the cytoplasmic state of the embryo sac in intact, unfertilised, mature ovules and it was found that 28;33% of ovules per carpel were sterile. The abortion rate of fertilised ovules and immature seeds (7 days after pollination) ranged between 32 and 34%. Beyond this period, ii was …


Preliminary Screening Of 17 Tropical Grasses For Tolerance To Eight Gramineaceo Herbicides, D S. Loch, G L. Harvey Oct 2024

Preliminary Screening Of 17 Tropical Grasses For Tolerance To Eight Gramineaceo Herbicides, D S. Loch, G L. Harvey

IGC Proceedings (1977-2023)

Successful seed production of tropical grasses depends on effective weed control. In particular, annual grass weeds compete strongly with perennial grass seed crops during establishment, and invasion by other perennial grasses can also occur. Glasshouse screening experiments involving 15 tropical grass cultivars and two perennial grass weeds were carried out to identify herbicide and grass combinations warranting more detailed investigation. Herbicides at standard ·rates for arable crops were applied either pre-emergence (at sowing) or post-emergence (14 days after sowing). Metribuzin and four herbicides developed for wild oats control (diclofop-methyl, flamprop-methyl, tralkoxydim, tri-allate) showed almost no useful selectiviiy. Marked differences, however, …