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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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INDONESIA
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 213 Documents
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Increasing the Growth and Yield of Tomato Plants (Lycopersicum esculentum Mill.) by Providing Potassium and Paclobutrazol Zubaidi, Nora; Djarwatiningsih; Sulistyono, Agus
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4861

Abstract

Tomatoes (Lycopersicum esculentum Mill.) are a horticultural commodity with high economic value, but theirproductivity is often hampered by flower and fruit loss. Increasing growth and yield can be achieved throughpotassium fertilization, which plays a role in photosynthesis and fruit formation, and through the application ofthe growth regulator paclobutrazol, which suppresses vegetative growth and stimulates the generative phase. Thisstudy aims to evaluate the effects of potassium fertilizer dose and paclobutrazol concentration, and theirinteractions, on tomato growth and yield. The study was conducted in Surabaya from November 2024 to February2025 using a factorial Randomized Block Design with two factors: potassium fertilizer doses (110, 125, 140, 155kg/ha) and paclobutrazol concentrations (0, 100, 125, 150 ppm), each factor repeated three times. The resultsshowed that the combination of 140 kg/ha potassium fertilizer and 125 ppm paclobutrazol produced the highestnumber of leaves (37), number of bunches (6.78), total number of fruits (37.67), and total fruit weight per plant(1,509.27 g). Potassium fertilizer at 140 kg/ha alone produced the highest number of flowers (69.41), whilepaclobutrazol at 125 ppm accelerated flower emergence (34.53 days), increased the number of flowers (69.77),and increased fruit weight per harvest period. Thus, using 140 kg/ha of potassium fertilizer combined with 125ppm paclobutrazol is recommended as the most effective treatment to optimize tomato plant growth and yield.
Optimizing the Dose of Cow Manure and Pruning on Sweet Corn (Zea mays saccharata Sturt.) Growth and Production Hidayat, Muhammad Nurdin; Sutinisutini; Hidayat, Ramdhan
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4875

Abstract

Sweet corn (Zea mays saccharata Sturt.) has high economic value; however, its productivity in Indonesia remainslow, leading to partial reliance on imports to meet demand. This study aimed to determine the optimal dose ofcow manure and pruning method to enhance the growth and yield of sweet corn. The research was conducted inBalongpanggang, Gresik, East Java, from October 2024 to January 2025, using a factorial Completely RandomizedDesign (CRD) with three replications. The first factor was the dose of cow manure (10, 20, and 30 tons/ha), andthe second factor was pruning type (no pruning, pruning three leaves below the cob, pruning male flowers, andpruning both leaves and male flowers). Data were analyzed using ANOVA followed by a 5% BNJ test. The resultsindicated that the combination of 30 tons/ha of manure with pruning three leaves below the cob and male flowersproduced the best outcomes in vegetative growth parameters, including plant height, number of leaves, stemdiameter, cob weight, cob diameter, and sweetness content. These findings confirm that integrating organicfertilization with targeted pruning is an effective strategy for sustainably increasing sweet corn productivity.
Dynamics of Capsaicin Content of Red Chili (Capsicum annum L.) under Various Nutrient and Fertilization Statuses Sihombing, Okto Prandi; Sarifuddin; Sembiring, Mariani
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4895

Abstract

Accurate fertilization is an important factor affecting plant productivity. Indonesia currently ranks fourth amongthe world's largest red chili producers, but its productivity remains relatively low. Efforts to increase productivitycan be achieved through soil and plant analysis to provide site-specific fertilizer recommendations tailored toplant needs. This study aims to develop site-specific fertilizer recommendations to increase red chili productivityand to analyze the relationship between plant nutrient status and capsaicin content in Lubuk Cuik Village, LimaPuluh Pesisir District, Batubara Regency. The study was conducted at an altitude of 8 m above sea level using asurvey method. Plant samples were selected purposively based on differences in variety and harvest time, thenanalyzed in the laboratory as a basis for compiling fertilizer recommendations. The results showed that thenutrient status of red chili plants at the study site remained below optimal levels. Therefore, site-specificfertilizer recommendations were developed using a combination of three approaches: maintenance, sufficiency,and build. The fertilization guidelines were designed to achieve a yield of 21 tons/ha for the following varieties:Jitu (Urea 531 kg/ha, TSP 92 kg/ha, KCl 258 kg/ha), Laju (Urea 505 kg/ha, TSP 96 kg/ha, KCl 258 kg/ha), andlocal variety (Urea 513 kg/ha, TSP 94 kg/ha, KCl 255 kg/ha), assuming that crop residues are returned to thefield. Multiple regression analysis indicated that the relationship between nutrient status and capsaicin contentwas not statistically significant (R² = 0.084). However, nitrogen (N) and sulfur (S) tended to increase capsaicinlevels, whereas potassium (K) and phosphorus (P) tended to decrease them. The novelty of this study lies in thesimultaneous use of three approaches to link plant nutrient status analysis with site-specific fertilizerrecommendations, which is relatively new in red chili research.
Application of Planting Media Composition and Liquid Organic Mushroom Fertilizer Concentration Eternal Luck (JAKABA) on the Growth and Yield of Purple Eggplant (Solanum melongena L.) Setiawan, Rhendy Rifky; Utomo Pribadi, Didik; Suhardjono, Hadi
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4942

Abstract

The quality of the growing medium and nutrient availability influence eggplant growth and production. This studyaimed to determine the effects of different growing media combined with varying concentrations of liquid organicfertilizer on the growth and yield of eggplant (Solanum melongena L.). A completely randomized design (CRD)with two factors was used: planting media (soil; soil and rice husk charcoal 1:1; soil and goat manure 1:1; soil,rice husk charcoal, and goat manure 1:1:1) and Jakaba POC concentration (15, 30, 45, and 60 ml/L). The resultsshowed a significant interaction between the planting media and Jakaba POC on plant height, number of leaves at28–35 days after planting (DAP), and the number of fruits per plant. The best treatment was the combination ofsoil, rice husk charcoal, and goat manure (1:1:1) with 60 ml/L Jakaba POC. The planting medium significantlyaffected plant height and leaf number at 21, 42, and 49 DAP, as well as fruit weight per plant, while Jakaba POCinfluenced leaf number at 21, 42, and 49 DAP and fruit weight per plant. The combination of organic plantingmedia with Jakaba POC enhanced eggplant growth and yield, particularly plant height, leaf number, and fruitnumber. Based on these results, the combination of soil, rice husk charcoal, and goat manure with 60 ml/L JakabaPOC is recommended as an optimal treatment to improve eggplant growth and production by utilizing organicmaterials that enhance soil physical, chemical, and biological properties.
Analysis of The Effect of Mono Potassium Phosphate Fertilizer and Amino Acid Liquid Organic Fertilizer on The Quality of Melon Fruit (Cucumis melo L.) Fadilla Eka Rohcahyani; Setiahadi, Rahmanta
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4945

Abstract

Melon is a highly valuable horticultural commodity, and improving its fruit quality is essential for enhancingmarket competitiveness. The application of mono potassium phosphate fertilizer and liquid organic fertilizer (LOF)enriched with amino acids is expected to play a significant role in optimizing melon quality. This study aims toevaluate the effects of different dosages of mono potassium phosphate fertilizer and amino acid-enriched LOF onthe quality attributes of melon fruit. The research was conducted from April to July 2024 in a greenhouse locatedon agricultural land in Jatirejo Village, Nganjuk Regency. A total of 144 plants were used as research samples,arranged into 12 treatment combinations with three replications, with four plants per plot. The first treatmentfactor was the dosage of mono potassium phosphate fertilizer, with three levels: 5 g/plant, 10 g/plant, and 15g/plant. The second factor was the dosage of amino acid-enriched LOF, which included four levels: control, 50ml/plant, 100 ml/plant, and 150 ml/plant. Observed parameters included leaf number, fruit weight, fleshthickness, sweetness level, seed count, water content, and vitamin C content. The interaction between monopotassium phosphate fertilizer and amino acid-enriched LOF had a highly significant effect on fruit weight, fleshthickness, and seed count. Additionally, the interaction had a significant effect on leaf number and fruitsweetness. The combination of 15 g of mono potassium phosphate fertilizer and 100 ml of amino acid LOF perplant resulted in the highest fruit weight and optimal sweetness. This study highlights a novel integrativeapproach that combines inorganic phosphorus–potassium fertilization with amino acid–rich organic inputs toenhance melon fruit quality more effectively than single-factor applications. Based on these findings, it isrecommended that melon growers apply 15 g of mono potassium phosphate, combined with 100 ml of amino acidLOF, per plant to achieve superior fruit quality, particularly in terms of sweetness and overall yield.
Seed Soaking Time Modulates Germination Traits and Early Vigor of Melon (Cucumis melo L.) Syaputra, Dede Ardian; Triyanti, Vitri Renny; Shahniza, Sebrina; Razak, Sabrina Abdul
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4950

Abstract

Melon (Cucumis melo L.) is an important horticultural crop whose productivity is strongly influenced by seedquality and early seedling vigor. This study aimed to evaluate the effect of soaking duration on the germinationand early seedling vigor of melon plants (Cucumis melo L.). The research was conducted at MARDI, Malaysia, usinga completely randomized factorial design with five soaking durations (0, 2, 6, 12, and 24 hours) and threereplications. Melon seeds were soaked according to the treatments, then germinated and grown in vermiculite.The observed parameters included root length, root diameter, root volume, and the number of primary andsecondary roots. Data were analyzed using analysis of variance (ANOVA), followed by Duncan's multiple range test.The results showed that soaking duration had a significant effect (P ≤ 0.05) on all measured parameters. Seedswithout soaking (0 hours) exhibited the most optimal root growth, whereas soaking for 24 hours resulted in thelowest values. Excessive soaking caused hypoxic conditions and cellular membrane damage, leading to reducedseed vigor. This study confirms the importance of optimizing soaking duration to enhance germination and earlyseedling vigor in melon
Optimization of Planting Distance for the Growth and Yield of Red Beetroot (Beta vulgaris L.) at Various Harvest Ages Dewi Mayangsari; Widiwurjani; Rr. Djarwatiningsih Pongki.S
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4961

Abstract

Red beet (Beta vulgaris L.) is a horticultural crop whose production remains limited in Indonesia. Therefore, it isnecessary to increase productivity by optimizing planting distance and harvest age. This study aimed to examinethe interaction between planting distance and harvest age on the growth and yield of the red beet variety Ayumi04. The research was conducted from March to June 2025 in Mojoroto Village, Pacet District, Mojokerto, using aRandomized Block Design (RBD) with two treatment factors: planting distance and harvest age. The first factorwas planting distance (30x30 cm, 30x25 cm, 30x20 cm, 30x15 cm), and the second factor was harvest age (50, 60,and 70 days after sowing [DAS]). Observed parameters included plant length, leaf area, fresh tuber weight perplant, fresh tuber weight per plot, tuber weight per hectare, and leaf area index. The results showed that aplanting distance of 30x15 cm combined with a harvest age of 70 DAS produced the best results, with fresh tuberweight per plot of 3.90 kg and per hectare of 27.06 tons/ha. These findings provide practical guidance indicatingthat a 30x15 cm planting distance and a 70 DAS harvest age are optimal for enhancing land-use efficiency and redbeet production. Overall, appropriate planting distance and harvest timing can significantly improve theproductivity and yield of red beetroot.
The Effect of Candlenut Shell Ash and Biochar and NPK Fertilization on Corn (Zea mays L.) Growth and Production Sembiring, Tesalonika; Sarifuddin; Mukhlis
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4966

Abstract

Corn (Zea mays L.) is a strategic food crop that requires an adequate supply of essential nutrients, particularlynitrogen, phosphorus, and potassium, to support optimal growth and yield. The increasing accumulation ofcandlenut shells, which are difficult to decompose due to their high lignin content, has contributed toenvironmental pollution. Processing candlenut shells into ash or biochar can enhance their value. Both candlenutshell ash and biochar can serve as soil ameliorants, improving soil fertility by increasing soil pH, organic carbon,and cation exchange capacity (CEC), especially in ultisol soils characterized by low fertility. Ultisol soils aretypically acidic, have high aluminum saturation, and low CEC. Ash, an inorganic material rich in calcium, isproduced through complete combustion, whereas biochar is a carbon-rich material generated via pyrolysis. Thisstudy aimed to evaluate the effects of candlenut shell ash and biochar on the availability of N, P, and K nutrientsin corn (Zea mays L.) cultivated in Samosir Regency. The research was conducted in Pangururan, Samosir Regency,from June to November 2024. The results demonstrated that applying candlenut shell ash and biochar asameliorants enhanced corn growth. Candlenut shell ash was more effective than biochar at improving NPKfertilizer efficiency. Specifically, the application of candlenut shell ash at 10 tons per hectare, combined with asingle NPK fertilizer dose (treatment A12), yielded the best corn growth. Based on these findings, the use ofcandlenut shell ash is recommended for corn cultivation on ultisol soils, as it more effectively increases nutrientavailability and plant growth, thereby potentially enhancing corn productivity sustainably.
Strategy to increase the fresh durability of water spinach (Ipomea aquatica) at a room temperature of 10⁰ C using packaging technology Alhafizh, Alif Maulana; Lubis, Efrida; Wan Hussin, Wan Mohd Reza Ikwan bin
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4992

Abstract

Water spinach (Ipomoea aquatica) is a leafy vegetable widely consumed in Southeast Asia; however, it rapidly deteriorates after harvest. This study evaluated the effect of passive modified atmosphere packaging (MAP) using low-density polyethylene (LDPE) films—both unperforated and perforated with 1% holes—on the postharvest quality of water spinach during cold storage at 10 ± 1 °C. The experiment was arranged in a completely randomized design with two packaging treatments and three sampling intervals (0, 5, and 10 days). The LDPE film without holes (T₁) created a passive modified atmosphere characterized by a gradual decrease in O₂ levels (to approximately 8%) and a concomitant increase in CO₂ levels (to approximately 3%), whereas the LDPE film with holes (T₂) maintained gas levels close to ambient. A significant interaction between treatment and time (p < 0.001) was observed for chlorophyll content, gas composition, and storage losses. Water spinach in T₁ exhibited lower cumulative storage losses and better chlorophyll retention compared to T₂, indicating a slower physiological decline under reduced O₂ and elevated CO₂ conditions. Overall, passive modified atmosphere packaging (MAP) using non-perforated LDPE film effectively maintained visual freshness and minimized water spinach quality losses for up to 10 days. Based on the comparison of T₁ and T₂ treatments, T₁ was superior, as observations up to the tenth day showed only a slight percentage loss in T₁ relative to T₂, likely due to the completely sealed packaging used in T₁.
Analysis of Plant, Tuber, and Soil Samples for Fertilizer Comparison Controlled Release (CRF) and Conventional Crops Sweet Potato (Ipomoea batatas L.) on Sandy Soil Sutantio, Dimas; Kurniawan, Hazen Arrazie; Adzahar, Ch. M. Muhammad Syahren
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4994

Abstract

Sweet potato (Ipomoea batatas L.) is an important food commodity, but its productivity often declines in sandysoils due to low cation exchange capacity and significant nutrient loss. The use of Controlled Release Fertilizer(CRF) offers an alternative to improve fertilization efficiency and maintain soil chemical stability. This researchwas conducted at MARDI, Serdang, Malaysia, with three treatments: conventional fertilizer, CRF, and acombination of CRF with microbial inoculum. Observed parameters included soil pH, electrical conductivity (EC),cation exchange capacity (CEC), nitrogen (N), phosphorus (P), potassium (K) content, and nutrient use efficiency(NUE). Data were analyzed using ANOVA with the GLM procedure in SAS 9.4, followed by LSD tests at P ≤ 0.05. Theresults showed that CRF and CRF combined with microbial treatment increased soil pH from 6.05 to 6.22, CECfrom 2.01 to 2.78 meq%, NUE from 31.64% to 94.17%, and dry plant weight to 268.38 g. The combination of CRFand microbes proved more effective in improving soil chemical properties, enhancing nutrient uptake, andincreasing fertilization efficiency in sandy soils. These findings demonstrate that applying microbe-based CRF cansustainably increase productivity and are recommended for farmers working with sandy soils to optimize harvestyields while preserving soil fertility.

Page 20 of 22 | Total Record : 213

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