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KARAKTER ANATOMIS DAN FISIOLOGIS KEDELAI (Glycine max (L.) Merril) ‘GROBOGAN’ HASIL PERLAKUAN KEKERINGAN DAN MULSA JERAMI
No full textSoybean plant (Glycine max (L.) Merril) is one of the crop commodities
which has been cultivated by Indonesian people as primary source of vegetable
protein. The difficulties on cultivating soybean plant especially in dryland are lack
of water availability, competition with weeds and insect pests. Straw mulches can
be used to reduced ground water evaporation and weeds growth. This research
were aimed to know the anatomy and physiology characters of soybean (Glycine
max (L.)Merril) 'Grobogan' resulted from drought and straw mulches treatments,
and aimed to know mulches thickness and watering level can increased the
growth and production of soybean. The design of this experiment was Completely
Randomized Design with two factors and three replicates. The first factor was the
frequency of watering which consist of ( C0 = watering once in a day, C1 = once
in a week and C2 = once in two weeks) and the second factor was straw mulches
usage which consist of (M0 = without mulches, M1= 1 cm, M2 = 3 cm, M3 =5
cm). Treatments were done for 60 days. The observed parameters were anatomy
parameters (epidermis, korteks thickness and trachea diameter roots and ste
KARAKTER ANATOMIS DAUN KEDELAI (GLYCINE MAX (L.) MERRIL) ‘GROBOGAN’ HASIL PERLAKUAN KEKERINGAN DAN MULSA JERAMI
Full text linkTanaman kedelai (Glycine max (L.) Merril) merupakan salah satu tanaman pangan yang dibudidayakan masyarakat Indonesia sebagai sumber utama protein nabati. Kendala budidaya tanaman kedelai terutama pada lahan kering adalah ketersediaan air yang rendah dan kompetisi dengan gulma. Untuk mengurangi penguapan air tanah dan pertumbuhan gulma dapat digunakan mulsa jerami. Penelitian ini bertujuan untuk mengetahui karakter anatomi daun tanaman kedelai (Glycine max (L.)Merril)
‘Grobogan’ hasil perlakuan kekeringan dan mulsa jerami. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan dua faktor dan 3 ulangan. Faktor pertama adalah cekaman air yang terdiri atas penyiraman (C0 = setiap hari, C1 = sekali seminggu dan C2 = sekali 2 minggu) dan faktor kedua adalah penggunaan mulsa jerami yang terdiri dari (M0= tanpa mulsa, M1=1 cm, M2= 3 cm dan M3= 5 cm). Parameter anatomis daun yang diamati; indeks stomata, jumlah trikoma, tebal xilem pada daun dan tebal mesofil daun. Data dianalisis menggunakan Analysis of Variance (ANOVA) dengan uji lanjut DMRT (Duncan’s Multiple Range Test) pada taraf 5%. Hasil penelitian menunjukkan bahwa perlakuan cekaman kekeringan yang dikombinasikan dengan perlakuan mulsa jerami dapat meningkatkan ketebalan mesofil, ketebalan xilem, meningkatan indeks stomata namun menurunkan jumlah trikoma pada daun.
Kata kunci: Kedelai, Anatomis, Mulsa jerami, Kekeringan
Pengaruh Pemberian Mulsa Jerami Terhadap Populasi Hama Kepik Hijau (Nezara Viridula) yang Menyerang Tanaman Kedelai (Glycine max L) Varietas Burangrang
Full text linkPenelitian ini dilaksanakan dikawasan Instalasi pengamatan Peramalan Pengendalian Organisme Pengganggu Tanaman (IP3OPT) Luwu. Metode yang digunakan dalam penelitian ini adalah survei lapangan atau pengamatan langsung di lahan kedelai (Glycine max L), kemudian menghitung jumlah populasi hama kepik hijau (Nezara viridula) yang menyerang tanaman kedelai (Glycine max L). Penelitian ini merupakan penelitian eksperimen yang menggunakan rancangan percobaan acak lengkap (RAL) dengan mengobservasi pengaruh pemberian mulsa jerami terhadap populasi Hama kepik hijau (Nezara viridula). Parameter yang diamati adalah banyaknya jumlah kepik Hijau (Nezara viridula) yang menyerang tanaman kedelai (Glycine max L). Data yang diperoleh kemudian dianalisis secara varians dalam bentuk uji Fα = 0,05 kemudian dilanjutkan dengan uji BNT (beda nyata terkecil). Taraf kepercayaan α = 0,05. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian mulsa jerami terhadap populasi hama kepik hijau (Nezara viridula) yang menyerang tanaman kedelai (Glycine max L) varietas Burangrang. Hasil penelitian menunjukkan bahwa pemberian mulsa jerami memberikan pengaruh yang positif pada penelitian ini. Pemberian mulsa jerami berpengaruh nyata dalam menekan pertumbuhan populasi hama kepik hijau (Nezara viridula) yang menyerang tanaman kedelai (Glycine max L). Dengan pemberian mulsa jerami dapat menarik perhatian beberapa jenis musuh alami sebagai predator dan parasitoid bagi hama kepik hijau (Nezara viridula). Musuh alami inilah yang lebih besar peranannya dalam menekan populasi hama kepik hijau (Nezara viridula
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
PROTEIN ANALYSIS OF SAGO GRUB BASED ON INSTAR LARVAL STAGES
Full text linkHuman protein needs could be obtained from animal or vegetable. Sago grub (sago worm), a larva stage of Sago Palm Weevil (Rhyncophorus ferrigineus), has been usually consumed by local communities in Luwu Raya as protein source. The weevil larva hatch from eggs, the turn into first, second, third, fourth, fifth and sixth instar larval stage, before continued to pupa stage and at last as adult palm weevil. The objective of this research were to determine the average length and weight of sago grub in various instar larval stage, and to determine total protein content in various instar larval stage by using kjeldahl method. The results showed that the highest levels of total protein obtained at the third instar larval stage (12.04%) and the lowest in the first instar larval stage (8.02%). Total protein will be decline after the third instar larval stage for the proteins used for pupation in the process of metamorphosis
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