Survei Faktor Kultur Teknis Terhadap Perkembangan Populasi Hama Penggerek Buah Kopi Hyphotenemus Hampei Ferr (Coleoptera:scolytidae). Di Kabupaten Simalungun

Fitri Ace Samosir, "Survey of Progress Against Technical Factors Population Culture Pest Fruit Borer CoffeeHyphotenemus hampei Ferr. (Coleoptera: Scolytidae) in the District Simalungun " under the guidance of MenaUly Tarigan and Syarial Oemry. This research intends to determine the population of the coffee fruit borer H.hampei in some coffee plantations in the Kingdom Simalungun are Raya District, Pane District, Purba District.This research used quantitative analysis of the correlation Population Correlation H. hampei ( X) with theintensity of the attacks on coffee plants ( Y) and correlation with the population of the coffee plantmaintenance H. hampei. The results showed that there were differences in population and the intensity of thecoffee fruit borer attack H. hampei in the district of Simalungun due to differences in height. Population of H.hampei in the Raya District is 148.83 pest, in the Pane District pests as much as 145.20 and 24.10 in the districtof Purba as pests. Intensity of attacks in the Raya District H.hampei at 83.50%, in the Pane District at 88.83%,and in the Purba District of 26.83%

Uji Efektivitas Suspensi Baculovirus Oryctes Dan Metarhizium Anisopliae (Metch.) Sorokin Terhadap Brontispa Longissima Gestro. (Coleoptera :Chrysomelidae) Di Laboratorium

The objective of this research was to study the effectifity of suspension Baculovirus oryctes andMetarhizium anisopliae (Metch.) Sorokin to control Brontispa longissima Gestro.(Coleoptera : Chrysomelidae). The research was held at the laboratory of plant pest,Agroecotechnology Program Study, Agricultural Faculty, University of Sumatra Utara, Medan onApril to Mei 2014. This methode used Randomized Complete Design (RAL) of non Factorial thatconsist of 7 treatments and 4 replications. The research treatments were: 1. T0 : control(500 mL aquadest) 2. T1 : 40 ml B. oryctes / 500 mL aquadest 3. T2 : 50 ml B. oryctes / 500 mLaquadest 4. T3 : 60 mL B. oryctes / 500 mL aquadest 5. T4 : 40 gr M. anisopliae /500 mLaquadest 6. T5: 50 gr M. anisopliae / 500 mL aquadest 7. T6 : 60 gr M. anisopliae / 500 mLaquadest. The results showed that the highest percentage of mortality on T6(60 gr M. anisopliae / 500 mL aquadest) was about 95.00% and the lowest on T1(40 ml B. oryctes / 500 mL aquadest) was about 60.00%

Pengujian Viabilitas Trichogramma Spp. (Hymenoptera: Trichogrammatida Pada Beberapa Tingkatan Suhu Dan Lama Waktu Penyimpanan Di Laboratorium

The viability test of Trichogramma spp. (Hymenoptera: Trichogrammatidae) on some of the temperature level and depository time depth in the laboratory. Trichogramma spp. is egg parasit from lined stem borer pest (Chilo saccahariphagus) and shining stem borer pest (Chilo auricilius) which is the major pest of sugarcane. The aim of this research is to know the viability of Trichogramma spp. on some of the temperature level and depository time depth in the laboratory. This research used the Complete Randomized Design (CRD) 2 factorial with 12 treatments and 3 replications, T (Temperature) (10oC, 15oC, 20oC,), control (27oC) H (day) (2 days, 4 days, 6 days). The result of this research show that the long time of starter imago appearance found on T0H1 dan T0H2 (27o; 2,4 days) treatment for 0.71 hours and the latest found on T1H1 (10oC, 2 days) treatment for 4.17 hours. The fastest process of parasitic found in T0 (27oC) treatment for 0.71 days and the latest found in T2 (15oC, 2 days) treatment for 2.38 days. The highest presentation of the parasitic found T1H3 (10oC, 6 days) treatment of 97.33% and the lowest found in T0H1, T0 H2, T0 H3 (27oC, 2, 4, 6 days) for 0.71%. The highest total of the imago appearance in a line found in (T1H3 (10oC, 6 days), 35.59 imagoes, and the lowest found in T0H1, T0 H2, T0 H3 (27oC, 2, 4, 6 days) treatment for 0.71 imagoes. Keywords: viability of Trichogramma spp., temperature, depository time depth. ABSTRAK Pengujian viabilitas Trichogramma spp. (hymenoptera: trichogrammatidae) pada beberapa tingkatan suhu dan lama waktu penyimpanan di laboratorium. Parasitoid Trichogramma spp. merupakan parasitoid telur dari hama penggerek batang bergaris (Chilo saccahariphagus) dan penggerek batang berkilat (Chilo auricilius) pada tanaman tebu. Penelitian ini bertujuan untuk mengetahui viabilitas Trichogramma spp. pada beberapa tingkatan suhu dan lama waktu penyimpanan di Laboratorium. Penelitian ini menggunakan Rancangan Acak lengkap (RAL) 2 faktorial dengan 12 perlakuan dengan tiga ulangan yaitu T (suhu) (10oC, 15oC, 20oC), kontrol (27oC) H (hari) (2 hari,4 hari, 6 hari). Hasil penelitian menunjukkan lama waktu munculnya imago starter terdapat pada perlakuan T0H1 dan T0H2 (27oC; 2, 4 hari) yaitu 0.71 jam dan yang paling lama pada perlakuan T1H1 (10oC, 2 hari) yaitu 4.17 jam. Lama proses parasitasi yang paling cepat terdapat pada T0 (27oC) 0.71 hari dan yang paling lama pada T2 (15oC) yaitu 2.38 hari. Persentase parasitasi yang paling tinggi terdapat pada T1H3 (10oC, 6 hari) yaitu 97.33%, dan yang paling rendah pada T0H1, T0 H2, T0 H3 (27oC, 2, 4, 6 hari) yaitu 0.71%. Jumlah imago yang muncul per pias yang tertinggi terdapat pada perlakuan (T1H3 (10oC, 6 hari) yaitu 35.59 ekor, dan yang terendah pada perlakuan T0H1, T0 H2, T0 H3 (27oC, 2, 4, 6 hari) yaitu 0.71 ekor. Kata kunci: viabilitas Trichogramma spp., suhu, lama waktuABSTRACT The viability test of Trichogramma spp. (Hymenoptera: Trichogrammatidae) on some of the temperature level and depository time depth in the laboratory. Trichogramma spp. is egg parasit from lined stem borer pest (Chilo saccahariphagus) and shining stem borer pest (Chilo auricilius) which is the major pest of sugarcane. The aim of this research is to know the viability of Trichogramma spp. on some of the temperature level and depository time depth in the laboratory. This research used the Complete Randomized Design (CRD) 2 factorial with 12 treatments and 3 replications, T (Temperature) (10oC, 15oC, 20oC,), control (27oC) H (day) (2 days, 4 days, 6 days). The result of this research show that the long time of starter imago appearance found on T0H1 dan T0H2 (27o; 2,4 days) treatment for 0.71 hours and the latest found on T1H1 (10oC, 2 days) treatment for 4.17 hours. The fastest process of parasitic found in T0 (27oC) treatment for 0.71 days and the latest found in T2 (15oC, 2 days) treatment for 2.38 days. The highest presentation of the parasitic found T1H3 (10oC, 6 days) treatment of 97.33% and the lowest found in T0H1, T0 H2, T0 H3 (27oC, 2, 4, 6 days) for 0.71%. The highest total of the imago appearance in a line found in (T1H3 (10oC, 6 days), 35.59 imagoes, and the lowest found in T0H1, T0 H2, T0 H3 (27oC, 2, 4, 6 days) treatment for 0.71 imagoes

Analysis Ofcrushed Multi-walled Carbon Nanotubes

Crushing Multi-Walled Carbon Nanotubes (MWCNTs) by cryogenic crusher is one of mechanical methods to create good dispersion Carbon Nanotube (CNT) as structural modification of MWCNT for potential hybrids materials. Crushing in 15 and 30 minutes effectively cut tubes to be shorter and densely-packed structure formed after crushing 30 minutes. Based on Raman spectroscopy and thermal behavior of crushed MWCNTs, functionalization of MWCNT unidentified after crushing. Burn temperature of crushed MWCNTs (601.6 °C and 603.6 °C) appeared to be sooner than that's of pristine MWCNT (642.2 °C). The low oxidation resistance of crushed MWCNT pointed out presence of defective carbon corresponding to too short-CNT due to cutting