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Pebra Heriansyah
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Faculty of Agricultural Sciences, Islamic University of Kuantan Singingi Campus Kebun Nenas, Jake Jl. Gatot Subroto KM. 7. Kebun Nenas Jake, Kuantan Singingi, Riau Indonesia 29566
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Jurnal Agronomi Tanaman Tropika (JUATIKA)
Published by Universitas Islam Kuantan Singingi
ISSN : 2684785X     EISSN : 26561727     DOI : https://doi.org/10.36378/juatika.v7i1
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Agronomi Tanaman Tropika (JUATIKA) contains original articles of research, review article/literature review in Agronomy, Plant Protection, and Soil Science
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 25 Documents
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Search results for , issue "Vol 5 No 1 (2023): Vol 5 No 1 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA)" : 25 Documents clear
Optimization Of Composting Time from Palm Fronds and Empty Buttons Of Palm Oil (Elaeis guineensis Jacq) with Various Bioactivators Ali Mustafa Silalahi; Ryan Firman Syah; Pauliz Budi Hastuti
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 1 (2023): Vol 5 No 1 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA)
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i1.2665

Abstract

Composting or decomposition is a method of processing solid waste which has a high content (70% -80%). Empty fruit bunches from the processing of Crude Palm Oil Factories and fronds of palm oil (TM) plants have the potential to be used as organic fertilizer. Composting without a decomposer takes a long time of seven months, so a bio activator is needed to speed up the process. Research with the aim of determining the influence of various bio activators in accelerating the composting of palm fronds and empty bunches has been carried out at PT. Bahana Karya Semesta unit of Sungai Air Jernih Estate, Pauh, Sarolangun, Jambi in November 2021-February 2022. The Research method used was a Complete Randomized Design (RAL) with two factors. The first factor is bioactivator consisting of four types such as LCPKS (liquid waste from crude palm oil factory), MOL (Local microorganism), EM4 (Effective microorganism 4) and cow dung. The second one is the compost material consisting of empty fruit bunch/EFB (5 kg), fronds (5 kg), EFB + fronds (2.5 kg + 2.5 kg), EFB + fronds + LCC (legume cover crop) (2 kg + 2kg + 1kg). C/N ratio, temperature, campiness, shrinkage, crumbly, and color of compost were also recorded. The results showed that the bio activator could decompose organic material with some of the parameters that we measured. The analysis of the C/N ratio showed that each treatment gave different results. Palm fronds + LCPKS had the highest C/N ratio of 91, meanwhile, the combination of EFB+cow dung showed the lowest C/N ratio of 23. The material of EFB + fronds + LCC showed the highest pH value of 6.36 and the highest compost depreciation of 57.48%. The variety of compost material has the same influence on the temperature, campiness, and color of the compost. Meanwhile, the type of bio activator had the same effect on temperature, pH, shrinkage, crumbly, and color of the compost.
Total Biomass of Palm Oil in Agroforestry Systems Palm Oil (Elaeis Guineensis Jacq) With Gaharu (Aquilaria Malacensis Lamk.) and Palm Oil Monoculture System (Elaeis Guineensis Jacq.) Khaerul Basyar; Wawan Wawan; Nurul Qomar
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 1 (2023): Vol 5 No 1 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA)
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i1.1410

Abstract

This study aimed to compare the total biomass of oil palm in oil palm and gaharu agroforestry systems with oil palm monoculture systems. This research was conducted in February 2020 - April 2020 on agroforestry land (1 ha) and monoculture land (1 ha) located in Bukit Kemuning, Kampar - Riau. The method used in this study is a survey method and systematic sampling and determination of sample plots using the zig-zag method. The results of this study indicate that the microclimate is the light intensity in the agroforestry system ranging from 2,672 lux - 10,928 lux and in the monoculture system 3,023 lux - 12,065 lux, the air temperature in the agroforestry system is 27.1oC - 29.8oC and in the monoculture system it ranges from 27, 0oC – 31.8oC and air humidity in agroforestry have a value of 73% - 88% and in monoculture systems, the value ranges from 70% - 80%. The total weight of oil palm plant biomass in the oil palm and gaharu agroforestry system was 4,502.49 kg with an average total biomass of 52.11 tonnes/ha. In the monoculture system, the total weight of biomass in the monoculture system is 4,402.01 kg with an average total biomass of 50.95 tonnes/ha. The results of the 5% level t-test showed that the total weight of oil palm plant biomass in the agroforestry system of oil palm and agarwood plants was not significantly different compared to the total biomass of oil palm plants in the monoculture system. The presence of gaharu plants in the oil palm agroforestry system does not affect the total oil palm biomass on the land.
Controlling Spodoptera exigua Using Parasitoid Trichogramma japonicum in Acacia Nurseries (Acacia crassicarpa) at Kerinci Central Nursery PT. Riau Andalan Pulp & Paper Betti Andriany Sirait; Rusli Rustam; Hafiz Fauzana
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 1 (2023): Vol 5 No 1 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA)
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i1.1659

Abstract

Armyworm (Spodoptera exigua Hubner.) is the main pest of acacia. Controlling such pests generally uses synthetic insecticides, which cause negative impacts such as they would resistance & resurgence, environmental pollution, residual effects, secondary pest explosions, and reduced biodiversity. We need an alternative in pest control, such as using parasitoid Trichogramma japonicum. This study aims to test the parasitism after the release of Trichogramma japonicum on Spodoptera exigua eggs in Acacia crassicarpa nurseries. The research was carried out at the Kerinci Central Nursery PT. RAPP on October 2019-March 2020. The research started with exploring, rearing and releasing parasitoid Trichogramma japonicum. The treatment was plotted with and without releasing Trichogramma japonicum on Spodoptera exigua eggs for seven days of observation and analyzed using T-test at a 5% level. The significance of Trichogramma japonicum parasitized eggs in Spodoptera exigua eggs was 41.9% after releasing parasitoids in Acacia crassicarpa nurseries. The highest parasitization by Trichogramma japonicum was in the 3rd plot with an average parasitization of 53.8% and the lowest was in the 1st plot with an average 31.3% parasitization. Trichogramma japonicum that emerged from the total mass of eggs brought to the laboratory after parasitized eggs were 14.2%. Trichogramma japonicum showed significantly different results in reducing the egg population of Spodoptera exigua in the mother plant nursery Acacia crassicarpa.
A Review Simplicillium Lanosoniveum, Prospects as Biological Control Agents in Indonesia ambar susanti; Anton Muhibuddin; Zulfikar Zulfikar; Hardian Susilo Addy
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 1 (2023): Vol 5 No 1 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA)
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i1.2577

Abstract

Simplicillium lanosoniveum is a species of Simplicillium, included in the Cordycipitaceae. This fungus is known to have a dual role as an entomopathogen against insect pests and antagonist against disease pathogens in plants. There are no reports on the negative impact of S. lanosoniveum as biological control. In Indonesia, the research on the two roles of S. lanosoniveum is still limited. Therefore, it is necessary to study the potential of these fungi to be worthy of analysis, based on the results of previous research. The purpose of this study is to provide information about the potential of Simplicillium lanosoniveum as an entomopathogenic fungus and antagonist against plant fungal pathogens, which has various characteristics of pests and diseases in tropical regions.It is hoped that it can increase the diversity of fungi that act as biological agents in Indonesia, in an effort to suppress the use of chemical pesticides.
Intensity Of Soil Treatment And Frequency Of Inorganic Fertilizer Application On Nutrient Levels And Growth Of Palm Oil (Elaeis guineensis Jacq) At The Replanting Stage Hendra Pangondian Sihaan; Wawan Wawan; M. Amrul Khoiri
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 1 (2023): Vol 5 No 1 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA)
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i1.2833

Abstract

Oil palm is a plantation crop that produces vegetable oil, and people highly need it, so it requires efforts to increase its production. One way is by utilizing existing land without having to open new oil palm plantation areas with replanting. This study aimed to analyze the effect of fertilization frequency on different tillage and to get the best fertilization frequency on different tillage on leaf nutrient levels and growth of oil palm plants. This research experimented with a split-plot design (SPD) with a randomized block basic design. The factors tested in this study consisted of the main plot, e.g., tillage (No tillage, 1 time of tillage, 2 times of tillage) and subplots, e.g., the fertilization frequency (D1: 5 times frequency of NPK fertilization D2: 4 times frequency of NPK fertilization D3 : 3 times frequency of NPK fertilization). The two factors were combined, and 12 treatment combinations were obtained. Each treatment combination consisted of 3 groups, totaling 36 experimental units. Each experimental unit consisted of 2 plants, so 72 plants were obtained. The data obtained were analyzed using variance and further tested with the honest significant difference test (BNJ) at the 5% level and advanced test analysis using the Satker application (SAS). This study showed that NPK fertilization with a frequency of 2 times in 2 times tillage increased vegetative plant growth (increased stem circumference). The main plot of tillage two times increased leaf nutrient content (leaf N content) and plant vegetative (plant height gain and stem circumference increase). NPK fertilization with a frequency of 2 times increased plant growth (increased stem circumference).

Page 3 of 3 | Total Record : 25

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