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TUMBUHAN LIAR RAWA MANGROVE SEBAGAI INSEKTISIDA NABATI TERHADAP HAMA KROP KUBIS DI LAHAN RAWA PASANG SURUT
Get PDFMangrove plants that usually grow on tidal swampland are very important as water storage as well as wave retention. Also, these kinds of plants are developed potentially as one source of natural insecticide. The use of botanical insecticide will reduce environmental pollution due to excessive use of chemical pesticides. The study purpose is to determine the effectiveness of extraction from several species of mangrove plants that act potentially as natural insecticides to control cabbage pests in tidal swamplands. The study was carried out using a complete randomized design, 4 treatments and 3 controls (i.e. chemical insecticides, botanical insecticide, and without insecticide), with 5 replications. The results showed that the mangrove species extract of buta-buta, bakau and jeruju as botanical insecticide was effective against cabbage crop pest, with value of average death of caterpillar in range from 86.00 to 86.67%
EFEKTIVITAS EKSTRAK TUMBUHAN RAWA SEBAGAI INSEKTISIDA NABATI TERHADAP HAMA ULAT TRITIP PlutellaXylostella SKALA LABORATORIUM : (Effectiveness Of Swamp Plants Extract As A Botanical Insecticide on Diamondback Moth Plutella Xylostella Laboratory Scale)
Get PDFABSTRACT
Diamondback Moth (Plutella xylostella) can attack the shoots and leaves of plants belonging to the Cruciferae family (cabbage, mustard greens, caisin) from seedling to harvesting. The part of the plant that it attacks is the leaf with symptoms of holes. In general, in controlling pests, farmers always partner with chemical insecticides, while in the concept of integrated pest management (IPM), the use of chemical insecticides is the last alternative. To overcome this, pest control is directed to the use of plants as botanical insecticides. From the research, it was found that 9 types of swamp plants had a value of 84.00% that killed the tritip caterpillar, and 3 types that killed 81-82%. The LD50 value of the caterpillar in 10 swamp plant species was classified as moderately toxic (Galam, Cambai Karuk, Gandarusa grass, Pegagan grass, Tawar, Tegari, Melinjo, Kipahit, Maja and Tapak Liman), and 3 other types of swamp plants were mildly toxic ( Jingah, Bidara and Tanduk Rusa). Thus, it is necessary to preserve swamp wild plants so that these plants do not become extinct.
Keywords: Plutella xylostella, swamp plant, botanical insecticide,
 
POTENSI EKSTRAK GALAM SEBAGAI INSEKTISIDA NABATI TERHADAP HAMA KROP KUBIS (Crocidolomia pavonana) SKALA LABORATORIUM
Get PDFIn an effort to increase crop production often faced with pest attacks. Major losses resulting in crop failure can occur if the disturbance is not handled properly. The yield loss due to Crocidolomia pavonana cabbage crop pests is quite high reaching 80%. This pest is often found in every planting season of mustard plants. In addition, this pest is also spread quite widely in dry land and wetlands (tidal swamps and lowland swamps). Pests are generally controlled by chemical insecticides. Excessive use of chemical insecticides will have a negative impact on the environment such as resistance, and killing of natural enemies of pests. As an alternative, plant extracts can be used as natural insecticides in controlling this pest. The purpose of this study was to determine the effectiveness of galam extracts against pest cabbage plants C.pavonana. The study was conducted at the Laboratory of Pests Disease Research Institute for Swamp Farming Banjarbaru, South Kalimantan in March - September 2018. This study uses a completely randomized design with 3 treatments with plant extracts, 3 treatments without control, and 5 repetitions each. Each treatment uses 15 larvae of C. pavonana instar 2 on fresh mustard leaves. Botanical insecticide is formulated by dissolving solid extracts. The results showed that the use of galam extract can suppress cabbage crop pests with a mortality rate reaching 90.67
APLIKASI INSEKTISIDA NABATI BERBAHAN TANAMAN RAWA UNTUK MENGENDALIKAN HAMA KEDELAI ULAT GRAYAK (Spodoptera litura) DI LAHAN RAWA PASANG SURUT
Get PDFOne type of pest that often attacks soybean plant leaves in tidal swamplands is the armyworm pest. The intensity of leaf damage due to armyworm attack in tidal swamps ranges from 30-95%, and can even lead to crop failure. In controlling pests in soybean plants in general, always rely on chemical insecticides. The use of these chemical insecticides has a negative impact on the environment. To overcome this, the control is directed towards environmentally friendly pest control by utilizing swamp plants as a botanical insecticide. The study used a randomized block design (RBD) with 3 treatments of swamp plant extracts (galam, kirinyuh, kepayang) and 3 controls, namely without control, botanical insecticide made from neem, chemical insecticide with the active ingredient kloraniliprol. The aim of this study was to obtain a swamp plant extract that could be used in controlling armyworm pests (Spodoptera litura). The results showed that the three types of swamp plants could be used as botanical insecticides in controlling armyworm pests, and has an effectiveness value above 70%. The highest effectiveness of botanical insecticides was obtained at the age of 75 DAP, namely Galam (78.29%), Kirinyuh (78.86%) and Kepayang (78.85%)
KOMUNITAS ARTHROPODA PADA AGROEKOSISTEM JAGUNG MANIS DAN KACANG PANJANG DENGAN DAN TANPA PERLAKUAN INSEKTISIDA DI LAHAN GAMBUT
Get PDFThe purpose of the study was to determine the arthropod communities treat and untreated chemical insecticides on crops of sweet corn and long bean crop in peatland, Kalampangan. The experiment was conducted in area of 210 m2 and divided into 12 experimental plots (each plot was 12 m2). Sampling and sample observations carried out at 2-8 weeks after planting. Sampling using a sweep net to arthropods which are in the crown area and pitfall traps for arthropod at ground level area. On the sweet corn and long bean crop, the results showed arthropods are more common in crop of untreated chemical insecticide than that treated insecticide. Guilds between fitofag, natural enemies of predators and parasitoids and neutral arthropod interaction has occurre
Struktur Komunitas Arthropoda Nokturnal pada Jagung Manis dan Kacang Panjang Organik dan Konvensional Di Lahan Gambut
No full textPertanian organik merupakan teknik budidaya pertanian yang berorientasi pada pemanfaatan bahan-bahan alami (lokal) denganmenekankanpada kestabilanlingkungan sedangkan pertanian konvensional merupakan kebiasaan yang dilakukan petani setempat.Indikatorkestabilan pertanianorganik maupun konvensional dapatdiketahuidaridiversitas dankelimpahan arthropoda nokturnal.Penelitian bertujuan untuk mengetahui struktur komunitas arthropoda nokturnal pada jagung manis dan kacang panjang organik dan konvensional di lahan gambut. Penelitian dilaksanakan pada lahan seluas 210 m2, yang dibagi menjadi 12 petak percobaan (luas per petak 12 m2). Lahan tersebut ditanami sayuran jagung manis dan kacang panjang dengan perlakuan organik dan konvensional. Penelitian menggunakan teknik perangkap cahaya (Light Trap)untuk menangkap arthropoda nokturnal. Pengolahan data ditabulasi dengan Microsoft Excel. Pada petak organik dijumpai 8 Ordo dan 25 famili, sedangkan pada petak konvensional dijumpai 7 ordo dan 28 famili. Komposisi peran ekologis arthropodanokturnal yang ditemukanpada petak organik maupun konvensional terdiri dari predator (62,50%), hama (18,54%),serangga berguna lainnya (10,00%) dan parasitoid (8,96%). Diversitas arthropoda nokturnal yang diperoleh pada petak organik kacang panjang berdasarkan indeks diversitas Shannon-Wiener menunjukkan nila tertinggi (H'=2,12), sedangkan petak lainnya menunjukkan nilai H > 1
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
Pathogenicity of Indigenous Entomopathogen Liquid Formulation to Paddy Bugs Nymphs (Leptocorisa acuta Thunberg)
Get PDFThe purpose of this study was to determine the effectiveness of bio insecticide liquid formulations made from indigenous entomopathogens against paddy bugs nymphs. The study used a non-factorial Complete Randomized Design with 9 treatments and 1 control with five replications. The treatments studied consisted of E0: Control, E1: Beauveria sp Pky isolate + coconut water (CW), E2: Metarhizium sp isolate Jjt + AK, E3: Beauveria sp isolate Jts + CW, E4: Metarhizium sp isolate Lcc + CW, E5: Beauveria sp Pky isolate + shrimp shell extract (SSE), E6: Metarhizium sp isolate Jjt + SSE, E7: Beauveria sp isolate Jts + SSE, E8: Metarhizium sp isolate Lcc + SSE, E9: Synthetic insecticide b a Carbamate (Dharmabas 500 EC 2 ml L-1). The result showed that liquid bioinsecticide formulations were effective against mortality, infected nymphs and nymph death time. All entomopathogenic fungi isolates were able to cause infections in paddy bugs nymphs of 68% - 84%. Beauveria sp Pky isolate and Metarhizium sp isolate Jjt caused nymph mortality of 72% - 84% and the effectivity did not differ from insecticide b.a. Carbamate. Conidia viability of all entomopathogenic isolates in liquid media within 24 hours reached more than 80%. The fastest time to death of paddy bugs nymph occurred at 5.44 days ( Metarhizium sp. isolate) and 5.92 days (Beauveria sp. isolate) in coconut water media. Metarhizium sp. and Beauveria sp. in the medium of coconut water or shrimp shell extract has a very high potential to be developed as a bio insecticide, but it still needs to be further tested for its effectiveness in field conditions.Keywords: indigenous entomopathogen, coconut water, shrimp shell extract, paddy bugs nymp
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