1,720,956 research outputs found
PENILAIAN STATUS KESUBURAN TANAH PADA PENGEMBANGAN LAHAN KELAPA SAWIT (Elaeis quineensis Jacq.) di DESA LAEMANTA UTARA KECAMATAN KASIMBAR KABUPATEN PARIGI MOUTONG
No full text Status kesuburan tanah dicerminkan dari sifat tanah tersebut. Kondisi tanah yang subur merupakan syarat yang mutlak untuk mengoptimalkan pertumbuhan dan produktivitas tanaman, kesuburan tanah adalah salah satu faktor penting yang harus diperhatikan dalam budidaya tanaman kelapa sawit. Penelitian ini bertujuan untuk mengetahui status kesuburan tanah pada pengembangan lahan kelapa sawit di Desa Laemanta Utara, Kecamatan Kasimbar Kabupaten Parigi Moutong, untuk analisis sifat kimia tanah dilakukan di Laboratorium Unit Ilmu Tanah, Fakultas Pertanian Universitas Tadulako, Palu. Penelitian ini dilkasanakan mulai bulan Februari sampai Maret 2021. Metode yang digunakan dalam penelitian ini adalah metode survey secara langsung dimana peneliti meninjau secara langsung kondisi lahan yang akan dijadikan sebagai lokasi titik pengambilan sampel tanah. Pengambilan sampel tanah di ditentukan sebanyak 5 titik, dimana setiap masing-masing titiknya di ambil sebanyak 3 titik kemudian di kompositkan sehingga didapatkan 5 contoh sampel tanah. Analisis data yang dilakukan dengan metode desktiptif yaitu menjelaskan suatu keadaan yang ada dilapangan berdasarkan status kesuburan tanah pada lokasi penelitian. Hasil penelitian menunjukkan derajat kemasaman (pH) tanah dari masam sampai agak masam. Nilai C-Organik menunjukkan bahwa C-Organik tergolong berada pada kriteria tinggi sampai dengan sangat tinggi, denga nilai berkisar 4,48 – 5,58. Nilai Fosfor (P-Total) tergolong pada kriteria tinggi dengan nilai antara 42,83 – 50,06. Nilai Kalium (K-Total) tergolong pada kriteria rendah sampai kriteria sedang dengan nilai berkisar 14,43 – 32,50. Nilai Kejenuhan Basa (KB) tergolong pada kriteria tinggi dengan nilai berkisar antara 51,59 – 64,62. Nilai Kapasitas Tukar kation (KTK) tergolong pada kriteria rendah dengan nilai berkisar antara 12,39 – 14,98. Dari hasil analisis sifat kimia tanah di atas dapat disimpulkan bahwa secara umum atau tingkat kesuburan tanah di lokasi penelitian dalam keadaan sedang sampai dengan rendah
Perubahan Unsur Hara Makro (C-Organik N, P, K, DAN C/N) Tanah Salin Entisols Sidondo Akibat Pemberian Kompos Dan Sulfur Serta Pengaruhnya Terhadap Pertumbuhan Tanaman Jagung (Zea mays L.)
Full text linkThis study aims to determine the effect and interaction of composting and sulfur to changes in the macro nutrients in the soil saline Entisols Sidondo also to know the growth of maize ( Zea mays L ) in saline soil conditions by granting the application of compost and sulfur. The research was conducted from January to March 2016 , samples were collected from the ground in the village Sidondo, District Dolo, Biromaru Sigi regency, Central Sulawesi Province. Implementation of the experiment was conducted at the Experimental Farm, located in the Village Mamboro Western District of North Palu Palu City and analysis of soil and plant tissue analysis conducted at the Laboratory of Nature and Natural Resources and Environment, Faculty of Agriculture, University Tadulako, Palu. This research is compiled in a Complete Randoised Design (CRD) with 8 treatments and 3 replications. The treatments used are: Po= 0 ton ha-1, P1= compost 20 tons ha-1, P2= compost 40 tons ha-1, P3= compost 60 tons ha-1, So= 0 kg S ha-1, S1= Sulfur 200 kg S ha-1, S2= Sulfur 300 kg S ha-1, S3= Sulfur 400 kg S ha-1. Research shows the interaction between compost and sulfur real impact on the C-organic, nitrogen (N), phosphorus (P), and potassium (K). While the C / N no interaction Treatment dosage of 60 tons ha-1, compost gives the highest yield on the uptake and concentration of N and P in plant tissues of maize while giving high sulfur results in a dose of 300 kg S ha-1
Perubahan Unsur Hara Makro (C-Organik N, P, K, Dan C/N) Tanah Salin Entisols Sidondo Akibat Pemberian Kompos Dan Sulfur Serta Pengaruhnya Terhadap Pertumbuhan Tanaman Jagung (Zea Mays L.)
Full text linkThis study aims to determine the effect and interaction of composting and sulfur to changes in the macro nutrients in the soil saline Entisols Sidondo also to know the growth of maize ( Zea mays L ) in saline soil conditions by granting the application of compost and sulfur. The research was conducted from January to March 2016 , samples were collected from the ground in the village Sidondo, District Dolo, Biromaru Sigi regency, Central Sulawesi Province. Implementation of the experiment was conducted at the Experimental Farm, located in the Village Mamboro Western District of North Palu Palu City and analysis of soil and plant tissue analysis conducted at the Laboratory of Nature and Natural Resources and Environment, Faculty of Agriculture, University Tadulako, Palu. This research is compiled in a Complete Randoised Design (CRD) with 8 treatments and 3 replications. The treatments used are: Po= 0 ton ha-1, P1= compost 20 tons ha-1, P2= compost 40 tons ha-1, P3= compost 60 tons ha-1, So= 0 kg S ha-1, S1= Sulfur 200 kg S ha-1, S2= Sulfur 300 kg S ha-1, S3= Sulfur 400 kg S ha-1. Research shows the interaction between compost and sulfur real impact on the C-organic, nitrogen (N), phosphorus (P), and potassium (K). While the C / N no interaction Treatment dosage of 60 tons ha-1, compost gives the highest yield on the uptake and concentration of N and P in plant tissues of maize while giving high sulfur results in a dose of 300 kg S ha-1
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
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