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All Journal Jurnal Agrista AGROEKOTEKNOLOGI JURNAL ILMU PERTANIAN Jurnal Penelitian Karet
Rosmayati Rosmayati
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Education

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Journal : Jurnal Agrista

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Uji Daya Ketahanan Beberapa Varietas Cabe Merah (Capsicum annum L.) Terhadap Penyakit Antraknose (Gloeosporium piperatum Ell. et. Ev.) Rosmayati Rosmayati
Jurnal Agrista Vol 12, No 2 (2008): Volume 12 Nomor 2 Agustus 2008
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Testing of Some Varieties to Antracnose Diseases (Gloeosporium piperatum Ell. et. Ev.)ABSTRACT. One of the limiting factors to develop chilly in Indonesian is antracnose disease. This fungi attacked either young or mature of pod chilly. It was caused by Gloeosporium piperatum. This study were carried out in green house, Faculty of Agriculture, University of North Sumatera. The objective of this research is to find the resistant varieties to antracnose disease and high yield performance. This study arranged in Randomized Block Design (RBD) with 3 replications, respectively. The result showed that varieties King, TM-999, Kingehili, and Taro were more resistant to antracnose disease. While, Northredstar expressed slightly resistant, Taro, Northrestar, King, Kingehili dan TM-999, produced the highest, while Laris produced the lowest yield.
Studi Biologi Pleisispa reichi Chap. (Coleoptera: Crhysomelidae) di Laboratorium Darma Bakti; Rosmayati Rosmayati; Sufryiadi Sufryiadi
Jurnal Agrista Vol 13, No 1 (2009): Volume 13 Nomor 1 April 2009
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Biological Study of Pleisispa reichi Chap. (Coleoptera: Crhysomelidae) in LaboratoryABSTRACT. Pleisispa reichi is a mein pest of coconut in Indonesia. This beetle attacked the young leaves. The objective of this research id to know the biological aspect of this beetle on coconut leaves. This studies were conducted in Laboratory of plant pest and disease, Faculty of Agriculture, North Sumatera level. The result showed that female produced 43.40±9.86 eggs with hatching 80.77±6.95%. Larvae had 3 instars with duration 22.80±0.79 days. The age of pupae 5.30±0.71 days. While the age of female and male, 70.90±4.55 and 73.90±4.55 days, respectively. Copulation occurred when imagoes age 13-14 days. The length and wide size of eggs were 5.90±0.56 and 1.95±0.20 mm. The length larvae of instar 1, 2, and 3 were 4.05±0.37, 6.00±0.53, and 9.05±0.55 mm. While the width were 0.95±0.16, 1.35±0.24, and 1.85±0.24 mm. The measure of length and width of pupa were 8.75±0.49 and 1.80±0.26 mm. While the length and width size of male was 8.35±0.58 mm and 1.90±0.21 mm and the female was 9.75±0.54 mm and 2.20±0.26 mm. In life table showed that the net of reproduction rate (Ro) = 11.02. While the intrincic rate of reproduction (r) was 0.070 and Tc was 34.30. It means that the beetle had survival rate was 34.30%.
Co-Authors Ade Fipriani Amorrito Surbakti Andriany F Damanik Asima napitupulu Ayu Milani Charloq Darma Bakti Darma Wirawan Dian Simbolon Diana Sofia Hanafiah Dyanne Gisella P. Tambak E. Harso Kardhinata Emmy Harso Kardhinata Esra Lumbantobing Esra Lumbantobing Eva Sartini Eva Sartini Bayu Fachrina Wibowo Frynando Purba Girsang Gali Rakasiwi Hantar Sinamo Sinamo Hasmawi Hasyim Herti Folarida Hutajulu Ira Tiarma Sari Damanik Isman Nuriadi Kurnia Selekta Etika Harefa Lollie Agustina P. Putri Lollie Agustina P.Putri Lollie Agustina P.Putri2 Lollie Agustina P.Putri2 Lollie Agustina P.Putri2 Luthfi A. M. Siregar Luthfi Aziz Mahmud Siregar M. Basyuni Maria Sitepu Mbue Kata Bangun Mufit Musyarifah Narwiyan Narwiyan Nini Rahmawati Nini Rahmawati Nurhadi Satrio Nurul Ain Lubis Radite Tistama Retno Astari Retno Puji Astari Revandy Iskandar Muda Damanik Rizki Aulia Siti Aminah Sri Yunita Simanjuntak Sufryiadi Sufryiadi Sulvizar Musranda Sumarmadji Sumarmadji Syafruddin Ilyas Syarifah Aini Pasaribu Teguh Hakiki Nasution Yunita Armaya Lubis Yusuf Husni Zulfi Agus Leonard Sitepu