Article Per Year (5 Year)
p-Index From 2021 - 2026
0.882
P-Index
This Author published in this journals
All Journal Jurnal Agronomi Tanaman Tropika (JUATIKA)
Djarwatiningsih
Universitas Pembangunan Nasional “Veteran” Jawa Timur
Agriculture, Biological Sciences & Forestry

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Optimizing Nasa Liquid Organic Fertilizer Concentration and NPK Fertilizer Dosage 16-16-16 on the Growth and Yield of Glutinous Corn (Zea mays ceratina L.) Firda Aisha Salsabila; Djarwatiningsih; Didik Utomo Pribadi
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 7 No. 2 (2025): Vol. 7 No. 2 Mei (2025): 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.v7i2.4365

Abstract

Glutinous corn (Zea mays ceratina L.) is a distinctive variety known for its unique starch characteristics and high economic value. One of the challenges affecting glutinous corn plants' productivity is the soil's low nutrient content. To address this issue, improving the fertilization system is essential, which can be achieved by balancing the application of chemical fertilizers and organic fertilizers within the cultivation system. This study aims to identify the optimal doses of liquid organic fertilizer and NPK 16-16-16 fertilizer to enhance crop yields and improve fertilization efficiency. The research employed a factorial randomized block design (RAK) with two factors. The first factor is the dose of liquid organic fertilizer (C), which includes the following levels: control (without POC), 2 ml/l, 4 ml/l, and 6 ml/l. The second factor consists of the control (recommended dose of 4.5 g/plant) and doses of 2.25 g/plant, 3 g/plant, and 3.75 g/plant. Reason: Improved clarity, readability, and technical accuracy while maintaining the original meaning. The results indicated an interaction between the combination of liquid organic fertilizer and NPK 16-16-16 fertilizer treatments concerning the sugar content of glutinous corn. The treatment without applying liquid organic fertilizer (0 ml/l) yielded the highest cob weight without husks, measuring 211.22 g. Additionally, the application of NPK 16-16-16 fertilizer resulted in glutinous corn's most significant plant height at both 14 and 42 days after planting (DAP). It contributed positively to the sugar content of the corn.
The Effect of Gibberellin (GA3) Concentration on the Growth and Yield of Several Eggplant Varieties (Solanum melongena L.) Efrilia Lukita Sari; Pangesti Nugrahani; Djarwatiningsih
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.v8i1.4741

Abstract

Eggplant (Solanum melongena L.) is an important horticultural crop with high economic value and is widely cultivated in various regions due to increasing demand. This study aimed to determine the effects of gibberellin (GA3) concentration and eggplant varieties on the growth and yield of eggplant (Solanum melongena L.). The research was conducted in Kolomayan Village, Wonodadi District, Blitar Regency, from February to May 2025. A Completely Randomized Design (CRD) with a factorial arrangement of two factors was used. The first factor was gibberellin concentration at 0 ppm, 100 ppm, 200 ppm, and 300 ppm. The second factor was the eggplant variety, including Hitavi, Mustang, Pulus, and Teho 555. Parameters observed included vegetative and generative growth traits. The results showed a significant interaction between 200 ppm GA3 concentration and the Hitavi variety on total harvested fruit weight. The 200 ppm GA3 treatment alone produced the best results across all observed parameters. The Teho 555 variety excelled in plant height and leaf number, while the Hitavi variety outperformed others in flower number, total fruit number per plant, total fruit weight per plant, and fruit set.
Application of Silica Concentration and Planting Methods on the Growth and Yield of TSS Red Onions (Allium ascalonicum L.) Zerlinda Aqila Gitta Maharani; Ida Retno Moeljani; Djarwatiningsih
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.v8i1.4856

Abstract

Shallot propagation using seeds or True Shallot Seed (TSS) faces several challenges, including low seedling survivalrates and slow seedling development. This study aims to evaluate the effects of silica concentration and plantingmethods on optimizing the growth and productivity of TSS shallot bulbs. The research was conducted at the UPTDevelopment of Rice and Secondary Crops Seeds in Malang Regency from February to June 2025. The experimentemployed a factorial design arranged as a Completely Randomized Design (CRD) with two factors, resulting ineight treatment combinations, each replicated five times. The first factor was silica concentration at four levels:0 g/L, 12 g/L, 14 g/L, and 16 g/L. The second factor was the planting method, with two levels: direct plantingand soil-block seeding. Observed parameters included seedling growth percentage, plant height, number ofleaves, number of bulbs, wet weight of stover per clump, dry weight of stover per clump, and dry weight of bulbs.The results indicated no significant interaction between silica concentration and planting method on the growthand yield of TSS shallot bulbs. However, the single treatment at 16 g/L silica concentration (S3) significantlyimproved seedling growth percentage and plant height, whereas the direct planting method (T1) yielded higherplant height. These findings suggest that applying a 16 g/L silica concentration and direct planting can enhanceshallot plant growth when propagated from TSS seeds.
The Effect of Growing Media Composition and Eco-Enzyme Concentration on the Growth and Yield of Tomato (Lycopersicon esculentum) Daffa Novendra Aditama; Nova Triani; Djarwatiningsih
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.v8i1.4860

Abstract

Growth and production of tomato (Lycopersicon esculentum) are influenced by the quality of the planting mediumand nutrient availability. This study aimed to determine the effects of planting medium and eco-enzymeconcentration on the growth and yield of tomato plants. A two-factor Randomized Block Design was used, withfactors including planting medium (soil; soil and rice husk charcoal 1:1; soil and cow manure 1:1; soil, rice huskcharcoal, and cow manure 1:1:1) and eco-enzyme concentration (0, 1, 2, and 3 ml/L). The results showed asignificant interaction between planting medium and eco-enzyme concentration on plant height from 28 to 63days after planting, number of fruits per plant, and fruit weight per plant. The best treatment was thecombination of soil and cow manure (1:1) with 3 ml/L eco-enzyme. The planting medium significantly affectedplant height at 14 to 21 days after planting, the number of leaves from 14 to 42 days after planting, and floweringage, while the eco-enzyme concentration significantly affected plant height at 14 to 21 days and the number ofleaves from 14 to 35 days after planting. The combination of organic growing media with eco-enzymes canenhance tomato growth and yield, particularly in terms of plant height, fruit number, and fruit weight per plant.These results suggest this treatment is optimal for increasing tomato growth and production by improving soilphysical, chemical, and biological characteristics.
Increasing the Growth and Yield of Tomato Plants (Lycopersicum esculentum Mill.) by Providing Potassium and Paclobutrazol Nora Zubaidi; Djarwatiningsih; Agus Sulistyono
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.
Co-Authors Agus Sulistyono Daffa Novendra Aditama Didik Utomo Pribadi Efrilia Lukita Sari Firda Aisha Salsabila Ida Retno Moeljani Nora Zubaidi Nova Triani Pangesti Nugrahani Zerlinda Aqila Gitta Maharani