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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 336 Documents
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Optimizing NPK Fertilization with Arbuscular Mycorrhizae Inoculation to Enhance Shallot (Allium cepa L.) Performance under Drought Stress Nabil Hisyam; Saefurrohman; Yonny Koentjoro
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5463

Abstract

Shallots are a high-value horticultural commodity in high demand due to their role in food security. While the demand for shallots increases significantly each year alongside population growth, it has not been matched by stable production increases due to cultivation constraints—one of which is unfavorable environmental factors such as drought. The low tolerance of the plants to water scarcity and their shallow root systems result in inhibited nutrient absorption and reduced yields. Therefore, efforts are needed to increase shallot production, such as through mycorrhizal inoculation and appropriate NPK fertilization. This study aims to determine the optimal combination of mycorrhizal inoculation dosage and NPK fertilizer dosage to influence the growth and yield of the ‘Tajuk’ shallot variety under drought stress conditions.This research was designed as a two-factor factorial experiment arranged in a Randomized Block Design (RBD). The first factor was the mycorrhiza dose, consisting of four treatment levels: 0 g/plant (Control), 5 g/plant, 15 g/plant, and 25 g/plant. The second factor was the NPK dose, consisting of three treatment levels: 300 kg/ha (Control), 270 kg/ha, and 240 kg/ha. The analysis results showed that the treatment with an NPK dose of 300 kg/ha and a mycorrhiza dose of 25 g/plant significantly increased plant height, root length, chlorophyll content, and dry weight.The prominent advantage of these findings lies in proving that mycorrhizal symbiosis acts as a powerful biological buffer, maximizing Nutrient Use Efficiency (NUE) and significantly enhancing the crop's physiological resilience against water deficit. Based on these results, it is highly recommended that farmers cultivating shallots in drylands or drought-prone areas integrate 25 g/plant of mycorrhizal inoculant with the standard 300 kg/ha NPK fertilization.
Analysis of Ground Cover Vegetation on Soil Chemical Properties at PT Cibaliung Tunggal Plantation, Cibaliung I Palm Oil Plantation, Rokan Hilir Regency, Riau Province Putra Rahmadani; Ingrid Ovie Yosephine
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5746

Abstract

The productivity of oil palm (Elaeis guineensis Jacq.) is strongly influenced by the chemical fertility of the soil, which can be maintained or enhanced through the presence of ground cover vegetation. This study aims to analyze the effects of different types of ground cover vegetation on soil chemical properties in the Cibaliung I Estate Plantation of PT. Cibaliung Tunggal Plantation, Rokan Hilir, Riau. The research employed a survey method with purposive soil sampling at 0–30 cm depth across three distinct land conditions: areas covered with Nephrolepis biserrata, areas covered with Ottochloa nodosa, and open land without vegetation. Soil chemical properties tested in the Palm Oil Research Center (PPKS) laboratory included soil pH, total nitrogen (Total N), available phosphorus (Available P), and organic carbon (Organic C). Laboratory analysis revealed that ground cover vegetation significantly improves and maintains soil chemical quality compared to open land without vegetation. Areas covered with Nephrolepis biserrata exhibited the highest soil pH value of 5.4 (slightly acidic), attributed to its high biomass production, which suppresses leaching of soil bases, compared to more acidic land without vegetation (pH 4.6). Meanwhile, areas with Ottochloa nodosa were most effective at enhancing soil nutrient and organic matter fertility, recording the highest Total N value of 0.60% and the highest Available P concentration of 69.39 ppm, likely due to biomass decomposition and root-microenvironment activity. In contrast, open land without vegetation showed the lowest fertility, with a Total N value of only 0.08% and very low Available P (<0.01 ppm), resulting from high risks of surface erosion and nutrient leaching. This study concludes that the management and maintenance of ground cover vegetation such as Nephrolepis biserrata and Ottochloa nodosa are essential components of a sustainable soil conservation strategy in oil palm plantations. Ground cover vegetation plays a crucial role in maintaining and improving soil quality, thereby supporting sustainable oil palm plantation management.
The Effect of Providing Boiler Ash as a Planting Medium on Plant Growth of Vegetative Seeds of Coconut Palm Oil (Elaeis guineensis Jacq.) in Pre-Nursery M Andika Rifani; Ingrid Ovie Yosephine
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5787

Abstract

Oil palm (Elaeis guineensis Jacq.) is a major plantation commodity that plays a strategic role in the national economy. Seedling quality during the nursery phase is a critical factor in determining the success of cultivating this crop. Boiler ash, a byproduct of oil palm shell and fiber combustion, contains macronutrients such as nitrogen, phosphorus, potassium, and magnesium and has the potential to improve the quality of the growing medium. This study aims to test the effectiveness of boiler ash as a component of the growing medium on the vegetative growth of oil palm seedlings during the early nursery or pre-nursery phase. The study location is at the Indonesian Palm Oil Technology Institute's Practice Garden. The study lasted for 3 months. The design used was a non-factorial Randomized Block Design (RBD) with 5 treatments: A0 (topsoil + sand), A1 (topsoil + sand + boiler ash 40 g), A2 (topsoil + sand + boiler ash 60 gr), A3 (topsoil + sand + boiler ash 80 gr), and A4 (topsoil + sand + boiler ash 100 gr). Each combination was repeated five times. The growth parameters measured included seedling height, stem diameter, number of leaves, and the fresh and dry weights of the upper part and the roots. Data were analyzed using chromatography. ANOVA was conducted at the 5% significance level. Boiler ash treatment at various levels did not show a significant effect (tn) on all observed growth parameters of pre-nursery phase oil palm seedlings. Although there was no significant effect, treatment A3 showed the highest seedling height value, namely 19.02 cm, while treatment A2 had the highest fresh shoot weight, namely 3.32 g. Overall, the results indicate that using boiler ash as a component of the growing medium during the pre-nursery phase does not significantly increase oil palm seedling growth. However, the advantages of this study provide scientific certainty for practitioners that the use of boiler ash at a dose of up to 100 grams per seedling is safe as a component of the growing medium, without causing toxic effects or inhibiting seedling growth in the early phase. As a recommendation, for users who want to utilize boiler ash waste optimally, it is recommended to apply it during the main nursery phase when seed nutrient reserves have been exhausted, or to combine it with organic materials that enrich other nutrients.
Improvement of Quality TSS Onion Seeds Red (Allium ascalonicum L.) with Lime as a Material Coating Kurnia Adisya Septyaputri; Sutini Sutini; Makhziah Makhziah
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5207

Abstract

The availability of shallot seeds is a major problem in shallot cultivation; therefore, True Shallot Seed is used to overcome this problem. To make the use of TSS seeds more optimal, their germination and growth strength must be increased, one of which is by providing seed coating treatment to TSS seeds. Seed coating aims to improve and maintain seed quality, protect seeds from pathogen attacks and unfavorable environmental conditions, and support plant growth. The purpose of this study was to improve the quality of shallot TSS seeds. The experiment was conducted using a completely randomized design method with six levels and three replications. Seed coating treatments included (1) No Treatment (Control); (2) Dolomites; (2) Gypsum; (3) Quicklime; (4) Talc; (5) Pumice. The results showed that the best treatment was Gypsum, which increased the parameters of maximum growth potential, germination power, and growth synchrony. Coating seeds with Gypsum gave better results than seeds without coating treatment. The use of Gypsum as a coating material can be used as a simple and inexpensive alternative technology to improve the quality of shallot TSS seeds, making it suitable for adoption on a production and cultivation scale.
Response of Rice (Oryza sativa L.) Growth and Productivity to the Combination of Cow Manure and Biofertilizer in Lebak Rice Fields Noviyadi; Neni Marlina; Asvic Helida
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5940

Abstract

Lowland rice fields are suboptimal land with high acidity constraints and limited nutrient availability, thus requiring an appropriate and sustainable fertilization approach. These conditions make rice a commodity that requires special attention in nutrient management, considering that rice is the main food crop cultivated in lowland swamps but is sensitive to Fe and Al toxicity and nutrient deficiencies in acidic soil conditions. This study aims to examine the growth and productivity response of rice (Oryza sativa L.) to a combination of cow dung manure and biofertilizer in lowland rice fields. The study was conducted in Petar Village, Sungai Rotan District, Muara Enim Regency, South Sumatra Province, using a non-factorial Randomized Block Design (RBD) with five treatments and five replications, namely: no treatment, 100% recommended fertilizer dose, cow dung manure, cow dung manure + ½ recommended fertilizer dose, and biofertilizer + ½ recommended fertilizer dose. The parameters observed included plant height, total number of tillers, productive tillers, panicle length, number of full grains, full grain weight, root length, and productivity (tons/ha). Data were analyzed using ANOVA at the 5% level and continued with Tukey's test. The results showed that the treatment of cow dung manure + ½ dose of recommended fertilizer consistently produced the best values in all growth and productivity parameters, with the highest grain yield of 5.34 tons/ha, significantly different from all other treatments. The treatment of biofertilizer + ½ dose of recommended fertilizer produced a productivity of 4.88 tons/ha and ranked second best. The integration of organic materials and biofertilizers with reduced doses of inorganic fertilizers proved to be more efficient than the use of full doses of inorganic fertilizers alone in increasing rice growth and productivity in lowland rice fields.
The Resistance of Spodoptera frugiperda to Carbamate-Class Insecticides in Serang Regency, Indonesia Cahyani Nufus; Julio Eiffelt Rossaffelt Rumbiak; Andi Apriany Fatmawaty; Andree Saylendra
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5971

Abstract

Spodoptera frugiperda is a pest native to tropical and subtropical America. This pest is invasive and has spread to other parts of the world. Farmers use synthetic chemical pesticides in pest control because they are easily available and have a rapid population suppression rate. Carbamates are a group of insecticide compounds that have the potential to disrupt the central nervous system. Resistance is a negative impact of irresponsible insecticide use. This study aims to determine the level of resistance of Spodoptera frugiperda to synthetic carbamate insecticides. The study used a completely randomized design (CRD) consisting of two factors. The first factor was the insecticide treatment, including control (no insecticide), carbaryl, methomyl, and carbofuran. The second factor was the concentration levels of 5%, 20%, 50%, 75%, and 95%, with three replications for each treatment. Data were analyzed using analysis of variance (ANOVA), probit analysis (SPSS software), and Duncan's Multiple Range Test (DMRT) as a post hoc test. The results indicated that field populations of Spodoptera frugiperda in Serang Regency, Indonesia, were suspected of having developed resistance to carbaryl. Differences in insecticide performance among the tested carbamate active ingredients highlight the importance of selecting effective insecticides for S. frugiperda management. Based on the LT and LC values, methomyl exhibited the highest toxicity among the tested carbamate insecticides and may be considered a potential option for managing S. frugiperda, although further field validation is recommended. This study also documented changes in larval body morphology, coloration, and odor following exposure to the tested insecticides.

Page 34 of 34 | Total Record : 336

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