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Pemanfaatan Tanaman Refugia Mengendalikan Hama Tanaman Padi (Oryza nivara L) di Soporaru Tapanuli Utara
No full textSAMPE LESNIDA 2021. Pemanfaatan Tanaman Refugia Mengendalikan Hama Tanaman Padi (Oryza nivara L) di Soporaru Tapanuli Utara”, yang dibimbing oleh Amelia Zuliyanti Siregar dan Darma Bakti. Salah satu cara yang dapat digunakan untuk mempertahankan keanekaragaman hayati karena dampak negatif penggunaan bahan kimia yaitu dengan memanfaatkan tumbuhan berbunga yang terdapat di pematang sawah. Tanaman refugia salah satu bunga yang dapat dijadikan sebagai tempat perlindungan bagi musuh alami serta sebagai penyedia pakan. Tujuan penelitian ini adalah untuk membandingkan pemanfaatan tanaman refugia dan tanpa refugia dalam mengendalikan hama padi merah ramah lingkungan di Dusun Soporaru Sigotom Julu, Kecamatan Pangaribuan, Kabupaten Tapanuli Utara, Provinsi Sumatera Utara dan diidentifikasi dilaboratorium Penyakit Tanaman, Fakultas pertanian, Universitas Sumatera Utara pada Juli 2021 sampai February 2021. Penelitian ini menggunakan metode purposive sampling dengan 3 jenis perangkap antara lain: perangkap kuning, perangkap jatuh dan perangkap jaring. Hasil penelitian menunjukkan arthropoda yang tertangkap pada lahan menggunakan refugia sebanyak 8 ordo, 23 famili, dan 1.952 ekor sedangkan pada lahan tanpa refugia sebanyak 8 ordo, 22 famili dan 1.807 ekor. Pada lahan menggunakan refugia (r) dibandingkan dengan lahan tanpa refugia (k) diketahui Indeks Kekayaan Jenis (R) (Rr=2,9 dan Rk=2,8), Indeks Keanekaragaman (H’) (H’r=2,67 dan H’k=2,19), dan Indeks Kemerataan (E) (Er=0,85 dan Ek=0,71). Status fungsi teridentifikasi pada lahan menggunakan refugia dan tanpa refugia sebanyak 5 jenis yaitu herbivor, polinator, predator, parasitoid dan scavenger.SAMPE LESNIDA 2021. Utilization of Refugia Plants to Control Rice Pests (Oryza nivara L) in Soporaru North Tapanuli, supervised by Amelia Zuliyanti Siregar and Darma Bakti. One way that can be used to maintain biodiversity due to the negative impact of the use of chemicals is by utilizing flowering plants found in rice fields. The refugia plant is one of the flowers that can be used as a shelter for natural enemies and as a feed provider. The purpose of this study was to compare the use of refugia and without refugia plants in controlling environmentally friendly red rice pests in Soporaru Sigotom Julu Hamlet, Pangaribuan District, North Tapanuli Regency, North Sumatra Province and identified in the Plant Disease Laboratory, Faculty of Agriculture, University of North Sumatra in July 2021 until February 2021. This study used a purposive sampling method with 3 types of traps, namely: yellow traps, fall traps and net traps. The results showed that 8 orders of refugia were caught on land using refugia, 23 families, and 1,952 individuals, while on land without refugia there were 8 orders, 22 families and 1,807 individuals. On land using refugia (r) compared to land without refugia (k) it is known that the Species Richness Index (R) (Rr=2.9 and Rk=2.8), Diversity Index (H) (Hr=2.67 and Hk= 2.19), and Evenness Index (E) (Er=0.85 and Ek=0.71). Function status identified on land using refugia and without refugia as many as 5 species, namely herbivores, pollinators, predators, parasitoids and scavengers.76 HalamanSkripsi Sarjan
PEMANFAATAN TANAMAN REFUGIA MENGENDALIKAN HAMA PADI (Oryza nivara L) DI SOPORARU TAPANULI UTARA
Get PDFThe refugia plant is one of the flowers that can be used as a shelter for natural enemies and as a feed sources for insects. The purpose of this study was to compare the use of refugia and without refugia plants in controlling environmentally friendly red rice pests in Soporaru Hamlet, Sigotom JuluVilalge, Pangaribuan District, North of Tapanuli Regency, North of Sumatra Province. This study uses a purposive sampling method with 3 types of traps, namely: yellow traps, fall traps and net traps. The samples was identified in the Plant Disease Laboratory, Faculty of Agriculture, University of North Sumatra in July 2020 until February 2021. The results showed that 8 orders of refugia were caught on land using refugia, 23 families, and 1,952 individuals, while on land without refugia there were 8 orders, 22 families and 1,807 individuals. On land using refugia (r) compared to land without refugia (k) it is known that the Species Richness Index (R) (Rr=2.9 and Rk=2.8), Diversity Index (H) (Hr=2.67 and Hk= 2.19), and Evenness Index (E) (Er=0.85 and Ek=0.71). Function status identified on land using refugia and without refugia as many as 5 species, namely herbivores, pollinators, predators, parasitoids and scavengers.
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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