1,720,964 research outputs found
RESPON PERTUMBUHAN TANAMAN TEBU
No full textTebu (Saccharum officinarum L.) merupakan akumulator Si sehingga memerlukan lebih banyak asupan Silika. Tujuan penelitian untuk
mengetahui pengaruh pemberian Si terhadap pertumbuhan tebu varietas Bululawang dan Hari Widodo, serta mengetahui sumber Si terbaik.
Penelitian dilaksanakan mulai Januari sampai April 2015 di lahan milik PTPN XI, Unit Usaha Prajekan, Bondowoso, Jawa Timur.
Percobaan disusun menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan 2 faktor dan 3 ulangan. Faktor pertama varietas
terdiri dari Bululawang (V1) dan Hari Widodo (V2). Faktor kedua sumber Si terdiri dari kontrol (S0), abu bagas 212,5 g/tanaman (S1), Si
Plus-HS 12,5 g/tanaman (S2), dan Formula Si dengan konsentrasi 2 g/l (S3). Hasil penelitian menunjukkan pemberian Si secara signifikan
mampu meningkatkan tinggi tanaman, panjang batang, diameter batang, berat dan volume akar. Di sisi lain, varietas tidak berpengaruh
terhadap pertumbuhan tebu, sama halnya interaksi dengan sumber Si. Abu bagas merupakan sumber Si yang memberikan pengaruh terbaik
dalam meningkatkan panjang batang, diameter batang, berat dan volume akar tebu
PEMANFAATAN SISTEM PEMANEN HUJAN UNTUK BUDIDAYA HORTIKULTURA TAHUNAN DI LAHAN KERING
No full textAbstract
Water availability in dry season become handicap in improving land utility for upland horticulture. The objective of the research was to study the application of rain water harvesting and drip irrigationsystem to irrigateperennial horticulture at upland A permanent rain water harvesting system of 2 m under soil surface was built, which collected rain from a 114 ni house-roof at a 36-cubic meter water bed From 522.7 mm rain depth during j 05 days could accumulated rain water of
59.6 rrr. Using a 4-m height of water reservoir, along dry season the drip irrigation was built to irrigate one hectare of land where 460 Durian (Duriozibethinus) were planted Soil dryness electronic indicatorwere set up along the site to indicate the water equirement.Finallyby applyingdrip irrigationcouldreducedthe wateruse from20 liters/plantin conventionalsystem to 11.5 liters/plant
weeklyequivalentThisactivitycouldenhancedwaterdepth from280.2mm beforeirrigationto 369.1 mm up to 60 cm soil depth. The result show that this system can be applied at upland area, particularly for producing a high value of horticulture plants.
Keywords: rain harvesting, upland, horticulture, drip irrigatio
Pengaruh Dosis dan Frekuensi Pemberian Urea Enkapsulasi pada Metode Irigasi Tetes terhadap Pertumbuhan dan Hasil Tanaman Kailan (Brassica oleracea var. Alboglabra)
No full textKandungan nitrogen dalam urea mudah menguap dan larut dalam air, oleh karena itu efisiensi pemupukan urea perlu diperbaiki dengan mengubahnya menjadi slow-release fertilizer. Penelitian ini bertujuan untuk menghasilkan urea terenkapsulasi, mengetahui tingkat pelarutan urea terenkapsulasi, dan mengetahui interaksi antara dosis dan frekuensi pemberian urea terenkapsulasi terhadap pertumbuhan dan hasil tanaman kailan. Penelitian dilakukan di Greenhouse Balai Penyuluh Pertanian Wirolegi, Sumbersari, Jember, dengan koordinat geografis 8°11\u2718,08\u27\u27 LS dan 113°44\u2757,91\u27\u27 BT pada ketinggian 123 MDPL. Percobaan disusun dengan model rancangan acak lengkap faktorial, melalui perbedaan dosis dan frekuensi pemberian urea terenkapsulasi dengan ulangan 3 kali. Data pengamatan dianalisis menggunakan ANOVA dan kemudian diuji lanjut dengan uji DMRT pada taraf kesalahan 5%. Hasil penelitian menunjukkan bahwa interaksi dosis dan frekuensi pemberian urea terenkapsulasi menghasilkan pertumbuhan dan hasil tanaman kailan terbaik terhadap jumlah daun, luas daun, bobot segar tanaman, dan kandungan klorofil. Urea terenkapsulasi dapat dibuat dari penyalut zeolit alam, alginat, dan tepung sagu. Tingkat pelarutan urea terenkapsulasi terbaik diperoleh melalui penimbunan dengan tanah lembab. Jumlah urea terenkapsulasi yang dibutuhkan adalah 240 kg/ha untuk meningkatkan bobot segar tanaman, sedangkan 480 kg/ha diperlukan untuk meningkatkan kandungan klorofil. Urea terenkapsulasi terbukti meningkatkan hasil dan kualitas tanaman dengan mengatur dosis dan frekuensi pemberian
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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