1,720,955 research outputs found
Response of Groundnut (Arachis hypogaea L.) to Critical Period of Crop-Weed Interference in the West Coast Region of The Gambia
Get PDFField trials were conducted in the 2021 rainy season at the National Agricultural Research Institute Banjulinding (NARI Site III) and the Teaching and Research Farm of the University of The Gambia (UTG Faraba Banta) to determine the critical period of crop-weed interference on weed attributes, growth and yield of groundnut varieties. The experiment was conducted in a Randomized Complete Block Design with Nine (9) treatments replicated three times. The treatments tested were as follows: Weed-free up to 21 DAS, Weed-free up to 42DAS, Weed-free up to 63DAS, Weed-free check, Weed Infestation up to 21DAS, Weed Infestation up to 42 DAS, Weed Infestation up to 63 DAS, Weedy check. The groundnut variety used as a test crop was Fleur 11. The results revealed that weed-free check (75 DAS) consistently recorded the highest weed control efficiency and lowest weed infestation, weed density, and weed dry weight in both locations. The weedy check had the lowest weed control efficiency in both locations. Similarly, the weed-free check consistently had a positive effect on growth and yield characters. The critical period for crop-weed interference in the groundnut variety tested was observed to be between 21 DAS to 63 DAS. It could be concluded that weed-free check followed by weed-free up to 63DAS and weed-free up to 42 DAS had led to the production of the highest pod and kernel yields of groundnut
Response of Groundnut (Arachis hypogaea L.) to Critical Period of Crop-Weed Interference in the West Coast Region of The Gambia
Get PDFField trials were conducted in the 2021 rainy season at the National Agricultural Research Institute Banjulinding (NARI Site III) and the Teaching and Research Farm of the University of The Gambia (UTG Faraba Banta) to determine the critical period of crop-weed interference on weed attributes, growth and yield of groundnut varieties. The experiment was conducted in a Randomized Complete Block Design with Nine (9) treatments replicated three times. The treatments tested were as follows: Weed-free up to 21 DAS, Weed-free up to 42DAS, Weed-free up to 63DAS, Weed-free check, Weed Infestation up to 21DAS, Weed Infestation up to 42 DAS, Weed Infestation up to 63 DAS, Weedy check. The groundnut variety used as a test crop was Fleur 11. The results revealed that weed-free check (75 DAS) consistently recorded the highest weed control efficiency and lowest weed infestation, weed density, and weed dry weight in both locations. The weedy check had the lowest weed control efficiency in both locations. Similarly, the weed-free check consistently had a positive effect on growth and yield characters. The critical period for crop-weed interference in the groundnut variety tested was observed to be between 21 DAS to 63 DAS. It could be concluded that weed-free check followed by weed-free up to 63DAS and weed-free up to 42 DAS had led to the production of the highest pod and kernel yields of groundnut
Response of Groundnut (Arachis hypogaea L.) Varieties to Critical Period of Crop-Weed Interference in West Coast Region of The Gambia
Get PDFField trials were conducted in the 2021 rainy season at the National Agricultural Research Institute Banjulinding (NARI Site III) and the Teaching and Research Farm of the University of The Gambia (UTG Faraba Banta). The study aimed to determine the critical period of crop-weed interference on weed attributes, growth and yield of groundnut varieties. Hence, the objective was to determine a specific timeframe critical for weed management as well as growth and yield responses of the two groundnut varieties (Fleur 11 and Philippine pink) to weed competition. The experiment was conducted in a Randomized Complete Block Design with Nine (9) treatments replicated three times. The treatments tested were as follows: Weed-free up to 21 DAS, Weed-free up to 42DAS, Weed-free up to 63DAS, Weed-free check (75DAS), Weed Infestation up to 21DAS, Weed Infestation up to 42 DAS, Weed Infestation up to 63 DAS, Weedy check. The Groundnut variety used as a test crop was Fleur 11. The results revealed that weed-free check (75 DAS) recorded the highest mean weed control efficiency (98.3 %) and lowest percentage of weed infestation (22.0%) followed by Weed-free up to 63DAS with 85% weed control efficiency and 39% weed infestation in both locations. The critical period for crop-weed interference in the groundnut variety tested was observed to be between 21 DAS to 63 DAS. The mean pod yield of the groundnut varieties was found to increase from 769kg/ha at 21 DAS to 967kg/ha at 63 DAS with a decrease in weed density in both trials. The weedy situation was found to decline the pod yield of the groundnut varieties by 58% to 87% in Site III and UTG Faraba, respectively
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
- …
