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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Hortikultura Indonesia (JHI) AGRIVITA, Journal of Agricultural Science Jurnal AGROSAINS dan TEKNOLOGI JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) Journal of Tropical Crop Science Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Karimah Tauhid Jurnal Ilmiah Nusantara Journal Arunasita
Dhika Prita Hapsari
Department Of Agronomy And Horticulture, Faculty Of Agriculture, IPB University (Bogor Agricultural University), Jl. Meranti, Kampus IPB Dramaga, Bogor 16680, INDONESIA
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Neuroscience Social Sciences

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Journal : Journal of Tropical Crop Science

 1 
Effects of Pruning, Branch Bending, and Biofertilizer Application on Flowering and Fruiting of Guava “Crystal” Natalia, Cristina Evi; Susanto, Slamet; Suketi, Ketty; Hapsari, Dhika Prita
Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.01.185-194

Abstract

Guava “Crystal” is one of Indonesia’s most popular varieties; its demand continues to increase, so it is important to examine methods to increase fruit production. This research aims to increase the flowering and fruiting of guava “Crystal” through branch-bending and application of biofertilizer. The results showed that pruning + bending significantly increased the number of shoots by 15.8%, shoot length by 11.16%, and leaf number by 15.09%. This treatment also increased flower number by 88.84%, fruit number by 77.9%, and double the fruit weight. Biofertilizers significantly increased vegetative growth in the form of the number of shoots (5.12%), shoot length (9.21%), and number of leaves (10.29%). Pruning + bending and biofertilizer did not significantly affect weight per fruit, fruit diameter, fruit volume, fruit firmness, total soluble solids, total titratable acids, and vitamin C content.
Growth Response, Physiology, Metabolomic, and Production of Micro-Tom Tomatoes to Additional Lighting with White and Purple Light-Emitting Diode Lubis, Wahyu Muhammad Yuha; Hapsari, Dhika Prita; Poerwanto, Roedhy; Matra, Deden Derajat
Journal of Tropical Crop Science Vol. 12 No. 02 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.02.284-295

Abstract

Tomatoes are a widely produced and consumed fruit-vegetable belonging to the Solanaceae family. It contains minerals, vitamins, essential amino acids, sugars, and fiber. Micro-Tom is a wild-type cultivar from a cross between the Florida Basket and Ohio 4013-3 cultivars. Micro-Tom has two mutant types, the iaa9-3 and iaa9-5 mutants, which exhibit strong parthenocarpic properties. It is classified as a mutant tomato due to a mutation in the IAA9 gene, which belongs to the Auxin/IAA (Indole-3-Acetic-Acid) gene family and plays a role in suppressing the endogenous auxin signal transcription pathway. Using artificial light in cultivation techniques shortens the plant cycle and accelerates the juvenile phase. This study aimed to investigate the morphological, physiological, and production responses of Micro-Tom tomatoes to supplemental LED lighting. The research was conducted at the Leuwikopo experimental field of IPB University from March to November 2023. A completely randomized design was employed, with two factors (LED spectrum and Micro-Tom genotyping) and nine replicates. The study also examined the potential benefits of combining polychromatic and monochromatic light-emitting diodes (LEDs). The response of Micro-Tom tomatoes to artificial lighting with purple and white LEDs did not show significant differences in growth and production parameters. However, significant differences were observed between the tomato types, specifically between the Wild-type and the iaa9-3 mutant. No significant differences were found in LED treatment or Micro-Tom genotype for physiological parameters such as chlorophyll content and glucose-fructose levels. Regarding fruit quality, no significant differences were observed for parameters such as total soluble solids (TSS, Brix) to total titratable acidity (TTA, acidity), glucose and fructose, and malic acid. The LC-MS/MS analysis of leaves exposed to purple LED light revealed a profile dominated by secondary metabolites from the fatty acid compound group, suggesting the potential benefits of this lighting combination. In conclusion, using LED lights can accelerate the plant life cycle and shorten the juvenile phase, as evidenced by the first flower emergence, which occurred 20 days after transplanting (DAT) in the wild-type genotype and 16 DAT in the mutant genotype.
Morphophysiological Study of Kecapi (Sandoricum koetjape Merr.) Seedlings Against Different Artificial Light Spectra and Intensities Defitrianida, Asyhuriyah Wardah; Poerwanto, Roedhy; Hapsari, Dhika Prita; Matra, Deden Derajat
Journal of Tropical Crop Science Vol. 12 No. 03 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.03.604-614

Abstract

Kecapi (Sandoricum koetjape Merr.) is a tropical fruit species that belongs to the Meliaceae family. Kecapi trees require 5-7 years to produce fruit when grown from seeds, necessitating efforts to accelerate their growth, including through the modification of light. This research aimed to study kecapi’s morphological, physiological, and anatomical responses to light spectra and intensities from light-emitting diodes. The experiment was designed using a two-factor, completely randomized design (CRD), namely LED light spectrum (white and purple) and light intensity (2 and 4 lights). The result showed that morphological and vegetative growth were significantly affected under the high-intensity purple LED treatment. The low-intensity purple LED treatment increased stomatal conductance and chlorophyll-b synthesis. The transpiration rate was highest under the high intensity white LED treatment. Low-intensity white LED treatment only increased the abaxial stomatal aperture. As the intensity increased, it also increased N-Total content but decreased micronutrient levels in the leaves.
Leaf and Flower Characterization of Abiu (Pouteria caimito Radlk.) at Two Locations in Bogor Region, West Java, Indonesia. Ramdan, Muhamad; Susanto, Slamet; Matra, Deden Derajat; Hapsari, Dhika Prita
Journal of Tropical Crop Science Vol. 10 No. 01 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.1.1-7

Abstract

Abiu is a species introduced into Indonesia from the tropics of the Amazon and has been developing for several years. Information on the characteristics of the abiu plant are still limited compared to other introduced fruit species. This research aims to identify the characteristics of the abiu plants in two locations in the Bogor region, West Java, Indonesia. The research was conducted at Balumbang Jaya village, the sub-district of Dramaga, the village of Mekarsari, the sub district of Cileungsi, Bogor, West Java. Further observation was conducted at Post-harvest Laboratory and Micro Technic Laboratory, Department of Agronomy and Horticulture IPB. The field study was conducted in January to July of 2018. This research was descriptive and no treatment was applied on the plant samples. Sampling was done randomly with as many as 15 plants at each location. Observations and measurements were conducted on the number of branches, leaves and flowers on 10 samples per plants. The results showed that there is morphological diversity of flowers and leaves at the two locations. The length, width, and weight of leaves and flowers in Balumbang Jaya were larger than those in Mekarsari. Different environments may contribute to the diversity of abiu leaves and flowers in the two locations.
Effectivity of borate micro fertilizer on yield of cucumber (Cucumis sativus L.) Suwarto, Suwarto; Hilmi, Muhammad; Hapsari, Dhika Prita
Journal of Tropical Crop Science Vol. 11 No. 01 (2024): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.11.01.82-90

Abstract

Boron (B) is one of the most essential nutrients for fertilization and the production of fruits and seeds, however the availability of boron in soil is very limited. The aim for this experiment is to test the borate micro fertilizer to improve the growth and production of cucumber (Cucumis sativus). The fertilizer used in this experiment is borate micro fertilizer which contain 46% or 460 g.kg-1 B2O3. The experiment was conducted at Cibadak Village, Sukaresmi District, Cianjur Regency, West Java Province. Treatments in this experiment were arranged within five rates of fertilizer, which are: without fertilizer (P0); 0.5 rate of Borate fertilizer (0.5 B) (P1); 1.0 rate of Borate fertilizer (1.0 B) (P2); 1.5 rate of Borate fertilizer (1.5 B) (P3); and 2.0 rate of Borate fertilizer (2.0 B) (P4). The result showed that the treatment of 0.5 to 2.0 rate of borate micro fertilizer can produce growth characteristics and plants that are better compared to the control treatment. Applicating 0.5 rate of borate micro fertilizer even has the capacity of yielding production up to 48.960 kg.ha-1. The 0.5 rate of Borate micro fertilizer treatment was concluded as the most effective one compared to other treatments, due to its capacity to produce the highest relative agronomical effectivity value, which is 152%. The recommended rate of Borate fertilizer is 25 kg.ha-1 given by soil drench at 15 and 30 DAP (days after planting) with the concentration is 1.5 g.L-1 and the volume is 250 ml/plant.
Effect of Shape and Size of Purple Nutsedge (Cyperus rotundus L.) Tuber Bioherbicide Granules on the Germination of Weed and Crop Seeds Sahara, Olyvia Fashatus; Chozin, Muhamad Achmad; Hapsari, Dhika Prita
Journal of Tropical Crop Science Vol. 13 No. 01 (2026): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.13.01.187-198

Abstract

The use of synthetic herbicides is an effective way to control weeds, but their widespread use has negative environmental impacts. A bioherbicide made from purple nutsedge tubers can be an alternative for weed control. Purple nutsedge’s tuber contain allelopathy compounds that can inhibit the growth of other plants (weeds). This study aims to evaluate the response of various shapes and sizes of bioherbicide granules made from purple nutsedge’s tuber in suppressing the germination of weed seeds and crop seeds. The experiment used a completely randomized design one factor and eleven treatments: control without herbicide treatment, synthetic herbicide active ingredient oxyfluorfen 240 g/L, purple nutsedge’s tuber powder bioherbicide without carrier, very small round granule bioherbicide, small round granule, medium round granule, large round granule, very small cylindrical granule, small cylindrical granule, medium cylindrical granule, and large cylindrical granule. Each treatment was tested on four species: Bidens pilosa and Cynodon dactylon (weeds), cucumber, and rice (crops). The experimental results showed that the application of purple nutsedge’s tuber-based bioherbicides exerts a noticeable influence on several germination parameters. The smaller the bioherbicide granule, the higher the germination inhibition rate. Very small, round-shaped granule bioherbicides showed greater effectiveness in suppressing seed sprout percentage, reducing growth rate, increasing the percentage of abnormal sprouts, and inhibiting plumula and radicle growth.
Co-Authors Abdullah Bin Arif Agief Julio Pratama Anas Dinurrohman Susila Antik Siti Latifah Ariz, Nail Fadhillah Aryani, Nabila Syarfina Danar Hadisugelar Deden Derajat Matra Defitrianida, Asyhuriyah Wardah Depanito Ismail Didy Sopandie Dodi Dodi Dr. Dhika Prita Hapsari, S.P., M.Si. Edi Santosa Edi Santosa Edi Santosa Fatawa, Muhammad Ihsan Fauzan, Farhan Febrianto, Miftakhur Rizki Hidayat Furqoni, Hafith Habibi, Irfan Hafith Furqoni, SP., M.Si. Ph.D. Hardiani, Siti Harliani Sri Utami Kermite, Fiolita Ketty Suketi Krisantini Kusnendi, Faizal Shofwan Lubis, Wahyu Muhammad Yuha M A Chozin Manalu, Doni Sahat Tua Marithasari, Harries Matra, Deden Derajat Mira Afrilia Setiawati Muhamad Ramdan, Muhamad Muhammad Hilmi Mulyana, Erik Nani Yulianti Nani Yulianti Natalia, Cristina Evi Nawang Wulan Nirma Ruhil Hadi Putra Resti Fadillah Roedhy Poerwanto Rosy Hutami Rosyad, Astryani Rusmiyati, Henny Sahara, Olyvia Fashatus Saputra, Maliki Febriantono Slamet Susanto Sofyan Zaman Sudradjat Sudradjat Suwarto Suwarto Trisna Setiadi Ulil Azmi Nurlaili Afifah Winarso D. Widodo Yuyun Puspitasari