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Bambang Gonggo Murcitro
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INDONESIA
Jurnal Ilmu-Ilmu Pertanian Indonesia
Published by Universitas Bengkulu
ISSN : 14110067     EISSN : 26849593     DOI : https://doi.org/10.31186/jipi
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Ilmu-Ilmu Pertanian Indonesia (JIPI) is a scientific journal that publishes research results related to resource issues and agricultural productivity widely, including Agroecotechnology, Plant Breeding, Soil Science, Plant Protection, and Agricultural Ecology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 163 Documents
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Eksplorasi Bakteri Endofit Terhadap Cendawan Pestalotiopsis microspora Penyebab Penyakit Gugur Daun Pada Tanaman Karet (Hevea brasiliensis Muell. Arg.) Vazza Navtra Tylova; Syamsul Bahri; Boy Riza Juanda; Alchemi Putri Juliantika Kusdiana
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 25 No 1 (2023)
Publisher : BPFP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.25.1.51-58

Abstract

[The Potential of Endophytic Bacteria as a Biological Controller of Leaf Fall Disease Caused by Pestalotiopsis sp. IN Rubber Plants (Hevea brasiliensis Muell. Arg.]. This study aims to explore endophytic bacteria and determine their effectiveness against the fungus Pestalotiopsis sp. which causes leaf fall on rubber plants. Pestalotiopsis sp. can attack all rubber clones resulting in decreased latex production. The presence of pathogen attacks can result in enormous economic losses. Therefore, it is very important to find an effective and efficient controlling method, one of which is through biological control of plant diseases, namely by using antagonistic microorganisms. The presence of endophytic bacteria as biological controllers has become an alternative method to reduce the practices of chemical control. This study used a Non-Factorial Completely Randomized Design (CRD) with 6 treatments and 4 replications, so that 24 experimental units were obtained, using Potato Dextrose Agar (PDA) media for the in vitro antagonist test using the dual culture method. Namely P₀ = Control, P₁ = Pestalotiopsis sp. 1 vs Bacteria P, P₂ = Pestalotiopsis sp. 2 vs Bacteria B, P₃ = Pestalotiopsis sp. 3 vs Bacteria C, P₄ = Pestalotiopsis sp. 4 vs Bacteria E, P₅ = Pestalotiopsis sp. 5 vs Bacteria F. The results indicated that antagonistic treatment of endophytic bacteria in vitro affected the percentage of inhibitory power of the mycelium of the fungus Pestalotiopsis sp. by endophytic bacteria at 1 - 6 Days After Incubation (DAI). The 3% KOH method and gram staining showed that samples P₁, P₂, P₅ did not produce mucus and were purple in colour (positive), but samples P₃, P₄, showed mucus and were pink in colour (negative). Hypersensitivity reactions to tobacco plants samples P₁, P₂, P₃, P₄, P₅ did not show negative characteristics or did not cause changes in coloration and symptoms on leaves of tobacco plant.  
EKSPLORASI KERAGAMAN PLASMA NUTFAH JENGKOL DI KABUPATEN SIJUNJUNG BERDASARKAN KARAKTER MORFOLOGI Nike Karjunita; Yeni Permata Sari; Kuswandi; Ananto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 25 No 1 (2023)
Publisher : BPFP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.25.1.45-50

Abstract

[EXPLORATION OF JENGKOL GERMPLASM’S DIVERSITY IN SIJUNJUNG REGENCY BASED ON MORPHOLOGICAL CHARACTERS]. Jengkol is one of the leading commodities in Sijunjung Regency. This research aims to determine the genetic diversity of jengkol accession in Sijunjung Regency based on morphological characters. The exploratory research was conducted in three sub-districts in Sijunjung Regency, West Sumatra from January to May 2021. The observed characters included vegetative and generative characters, which refer to the description of the registered jengkol variety. Data were analyzed using software R.3.5.2 for cluster analysis, and SPSS 17.0 for principal component analysis. The 60 accessions of jengkol from exploration in Sijunjung Regency were grouped into two main groups, namely Group 1 which consisted of two accessions, UGB 2A, and ARS 2B, while the rests belonged to Group 2. The coefficient of dissimilarity between the two groups of jengkol accessions from Sijunjung Regency about 45%, or with a similarity of 55%. The results of PCA analysis of 19 characters in 60 accessions of jengkol indicated a contribution of 79.17% of the total diversity, which was divided into seven main components. This study recommended a necessity to establish further selection from the diversity of jengkol germplasm in Sijunjung. Selected accessions can be registered by the Sijunjung Regency Government in order to increase the number of high-yielding jengkol varieties in West Sumatra, as well as be beneficial for seed breeders and farmers in this area
EFFECT OF PLASTIC MULCHING AND PESTICIDE APPLICATION ON ACTIVE AND STABLE CARBON IN VOLCANIC SOILS, WEST SUMATRA Maulana Kamil; Annisa Rachim; Irwin Mirza Umami; Khairun Nisa Kamarudin; Hermansah Hermansah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 25 No 1 (2023)
Publisher : BPFP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.25.1.59-65

Abstract

Agricultural intensification plays an important role in sustaining productivity. Plastic mulching and the application of pesticides in crop cultivation have become inevitable to achieve high yield production. This study was aimed to determine the effect of plastic mulching and pesticide applications on carbon (C) fractions. The field experiment was designed using a completely randomized design with two factors consisting of plastic mulching and the application of pesticide at two levels (with and without) at each treatment. All the treatments were prepared for three replications. The soil carbon fractions data collected includes active C and humic acid as stable C fractions. The findings of this research showed that both active and stable C fractions were not significantly influenced by plastic mulching and pesticide applications. The active and stable C fractions were ranging from 1.40 to 1.42 g/kg and from 193.3 to 220 g/kg, respectively. These results might be attributed to the period of the study. The duration of this study might be not sufficient to capture any potential long-term changes in soil C fractions induced by the treatments. Thus, further research should consider extending the experiment duration to assess the long-term effects of the agricultural practices to C fractions.

Page 17 of 17 | Total Record : 163

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