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All Journal BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Journal of Saintech Transfer PERTANIAN TROPIK
Muhammad Agung Permadi, Muhammad Agung
Universitas Muhammadiyah Tapanuli Selatan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Other

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PEMANFAATAN CENDAWAN Beauveria bassiana(BALS.) VUILL. SEBAGAI MIKO-INSEKTISIDA TERHADAP KUTU LONCAT JERUK Diaphorina citri KUW. (HEMIPTERA: LIVIIDAE) Permadi, Muhammad Agung
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 4, No 1 (2017): Agustus
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.955 KB)

Abstract

Asiatic citrus psyllid Diaphorina citri Kuwayama has been considered as one of important citrus pests and a vector of a serious citrus disease as well, greening disease or known as Huanglongbing (HLB). Among entomophatogenic fungi which can be used to control those pest insects isBeauveria bassiana.The objective of this study was to measure the infectivity ofB. bassianaagainst adult of D. citri.B. bassianaconidia that used were 103, 104, 105, 106, 107, and 108conidia/ml.The experiment was repeated three times and arranged in a completely randomized design (CRD). Mean was analized by Duncans multiple range test correction at the level α=0.05. B. bassianacaused mortality of D. citriat rate of 10%, 15%, 18.33%, 26.67%, 33.33% and 53.33% respectively. The result showed that LC50 of B. bassianawas 1.52 x 108conidia/ml.
TINGKAT DAN POLA DISTRIBUSI INFESTASI PENGGEREK BATANG JAGUNG OSTRINIA FURNACALIS (LEPIDOPTERA: CRAMBIDAE) DI PADANGSIDIMPUAN Permadi, Muhammad Agung; Harahap, Qorry Hilmiyah
BIOLINK : Jurnal Biologi Lingkungan, Industri dan Kesehatan Vol 6, No 1 (2019): Agustus
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v6i1.2093

Abstract

Ostrinia furnacalis Guenee as known as Asian corn stem borer is one of the main pests in corn cultivation practices in Indonesia. Besides Indonesia, these pests attack in other Asian regions such as Central Asia, East Asia, and also Australia. This study was aimed to measure the intensity of infestation and to analyze patterns of distribution of O. furnacalis in corn field. The observations of intensity and infestation distribusiton were held on 12 corn plantations owned by farmers in six sub-districts of Padangsidimpuan. Results showed that The lowest infested area of O. furnacalis larvae was 1.1%, while the highest was 4.31%. O. furnacalis larvae infestations at each plant in each plantations has a random distribution and the distribution was varies among corb fields.
Jajar Legowo Planting System with SRI Method (System of Rice Intensification) and the Use of Planting Tools for Caplak in Simatohir Village, Padangsidimpuan District Angkola Julu Lubis, Rafiqah Amanda; Harahap, Imelda Sari; Harahap, Qorry Hilmiyah; Permadi, Muhammad Agung; Sulaiman Abdi
Journal of Saintech Transfer Vol. 1 No. 2 (2018): Journal of Saintech Transfer
Publisher : Talenta Publisher Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.592 KB) | DOI: 10.32734/jst.v1i2.840

Abstract

This community service took place in Simatohir Village, Padangsidimpuan District Angkola Julu, Padangsidimpuan City. The implementation methods used are counseling methods, cultivation technique training, and mentoring. The approach method used is: a) Counseling about the application of SRI technology. b) Make demonstration plots or demonstration plots. c) Use of 2 : 1 legowo planting system using ticks. In the generative phase clearly visible results from the application of SRI are applied to the rice field cropping. There is a distance that facilitates the care of farmers, efficiency in the use of paddy water and the number of productive tillers is 25-40 tillers / clumps and the yield reaches 1337 tons with an area of ​​1000 square meters and this difference is very obvious when farmers do not use SRI , which starts from tillage which is only extracted, unbalanced fertilization, irregular irrigation, perforated plants between 10-20 plants with productive tillers only 15-23 tillers. This will have an impact on harvest yields which only reach 900 kg with an area of​​ 1000 square meters.
THE GERMINATION OF SALAK (Salacca zalacca) SEEDS WITH CHEMICAL SCARIFICATION TREATMENT : GERMINATION OF SALAK (Salacca zalacca) SEEDS WITH CHEMICAL SCARIFICATION TREATMENT Siregar, Elda Sari; Mahmud, Amir; Lubis, Rafiqah Amanda; Permadi, Muhammad Agung; Daulay, Ramadhan Syaputra
Jurnal Online Pertanian Tropik Vol. 8 No. 1 (2021): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.589 KB) | DOI: 10.32734/jopt.v8i1.9175

Abstract

This study aims to determine the effect of KNO3, H2SO4, and GA3 in breaking dormancy and germination of salak (Salacca zalacca) plants. In this study using a non-factorial randomized block design with one factor, namely P0 (control), P1 (KNO3 60%), P2 (KNO3 70%), P3 (KNO3 80%), P4 (H2SO4 60%), P5 (H2SO4 70%), P6 (H2SO4 80%), P7 (GA3 25 ppm), P8 (GA3 50 ppm), P9 (GA3 75 ppm), P10 (KNO3 60% and GA3 25 ppm), P11 (KNO3 70% and GA3 50 ppm), P12 (KNO3 80% and GA3 75 ppm), P13 (H2SO4 60% and GA3 25 ppm), P14 (H2SO4 70% and GA3 50 ppm), P15 (KNO3 60% and GA3 75). Parameters observed were germination, maximum growth potential, plant height, number of leaves, leaf length, and leaf width. Based on the results of the DMRT test at 5% level, it showed that each treatment had an effect on the chemical scarification treatment showing a significant effect on germination, maximum growth potential, plant height, number of leaves, leaf length, and leaf width. However, it did not have a significant effect on the number of leaves at 12 WAP, leaf width at 11 and 12 WAP. Keywords: Plant Height, Leaves, Leaf Width
PERTUMBUHAN DAN PRODUKSI TIRAM (Pleurotus ostreatus) TERHADAP VARIASI JUMLAH BIBIT Permadi, Muhammad Agung; Mukhlis, Mukhlis; Haldiman, Haldiman; Lubis, Rafiqah Amanda
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 6, No 2 (2021): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v6i2.209-214

Abstract

Mushrooms are organisms that do not have chlorophyll so that mushrooms cannot carry out photosynthesis. One type of mushroom that is commonly cultivated and consumed is the oyster mushroom (Pleurotus ostreatus). Oyster mushroom is a wood fungus that belongs to the Basidiomycetes class. Oyster mushrooms grow wild attached to weathered wood in the wild, by utilizing cellulose, hemicellulose and lignin as carbon sources to build cell mass. The purpose of this study was to study the growth and production of oysters (Pleurotus ostreatus) against variations in the number of seeds. This study used a completely randomized design (CRD) with six replications. The treatment in this study was the difference in the number of mushroom seeds planted in each baglog, namely 5, 8, 11 and 14 seeds. The data obtained were analyzed with variance and further tested with the DMRT test at the 5% level. Based on the research, it was found that the number of oyster mushroom seeds planted in baglog affects the growth of mycelium, the fresh weight of the first harvest and the harvesting age. The more oyster mushroom seeds planted in baglog, the wider the growth ofmycelium, the heavier the fresh weight of the first harvest and the faster the harvesting age.
Co-Authors Amir Mahmud Daulay, Ramadhan Syaputra Elda Sari Siregar Haldiman, Haldiman Harahap, Qorry Hilmiyah Harahap, Qorry Hilmiyah Imelda Sari Harahap Mukhlis Mukhlis Rafiqah Amanda Lubis, Rafiqah Amanda Sulaiman Abdi