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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Hortikultura Indonesia (JHI) Journal of Tropical Crop Science
Winarso Drajad Widodo
Department Agronomy And Horticulture, Faculty Of Agriculture, Institut Pertanian Bogor (IPB University) IPB University, Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Leaves production and its flavonoids content of moringa (Moringa oleifera Lam.) from fulvic acid treatment Joan Joulanda Grace Kailola; Edi Santosa; Sandra Arifin Aziz; Diny Dinarty; Winarso Drajad Widodo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 51 No. 1 (2023): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.264 KB) | DOI: 10.24831/ija.v51i1.45864

Abstract

Moringa is drought tolerant and its leaf is traditionally used as a vegetable. Recently, the leaf is used commercially in traditional medicine and functional foods. Fulvic acid is a kind of plant growth regulator derived from humic acid and is considered a fertilizer in sustainable agriculture. The objective of the research was to determine the effect of fulvic acid concentration on the growth, biomass, phosphorus and flavonoids contents of moringa seedlings. The experiment was conducted from July 2020 to January 2021 at Leuwikopo Experimental Station, Bogor. The treatment was arranged in a randomized block design consisting of two factors, i.e., fulvic acid level (0, 1, 2, 3, and 4 mL L-1) and moringa accessions (East Nusa Tenggara-ENT and Leuwikopo-LWK). Observation focused on growth and biomass, total flavonoids, and phosphorus contents of leaves. The results showed that fulvic acid enhanced leaf growth, and plant height. On the other hand, the fulvic acid application had no significant effect on biomass production, total flavonoids, and phosphorus contents of moringa leaves. Accessions expressed different responses to fulvic acid levels, i.e.e, the fulvic acid of 1 mL L-1 seemed favorable for ENT accession while 2 mL L-1 was favorable for LWK accession as indicated by the level of flavonoid content. Therefore, fulvic acid is beneficial in moringa cultivation, particularly for ENT accession. It is interesting to evaluate the fulvic acid application on moringa trees grown in ENT where soil moisture is considered low. Keywords: accession; phosphorus; seedling; humic acid; East Nusa Tenggara; vegetable
Evaluation of Silica Uptake from Foliar-Applied Silicon Nanoparticles in Melon (Cucumis melo L.) under Soilless Culture Haian Amin Badrieh; Winarso Drajad Widodo; Anas Dinurrohman Susila; Willy Bayuardi Suwarno
Journal of Tropical Crop Science Vol. 8 No. 03 (2021): 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.8.03.135-145

Abstract

Melon (Cucumis melo L.) is a fruit commodity that gets a great interest to be developed in Indonesia and has a high nutritional value. However, the fungal infection and pathogens in melon cultivation are considered significant problems that are difficult to manage. Therefore, efforts are needed to improve the productivity and quality of melon and prevent pest and disease attacks. One mineral nutrient that is assumed to enhance plant resistance and increase the quality and production of melon is silica. The purpose of the research was to evaluate silica absorption from foliar-applied silicon nanoparticles in melon under soilless culture and improve melon fruit's growth and quality by applying silica fertilizer. The experimental design used was a split-plot randomized complete block design 3 x 2 factorial pattern with four replicates. The main plot factor is silica fertilizer (Novelgro, water-soluble), consisting of three silica concentrations of 0.67; 1.33 ppm, and control. The spray volume of each treatment was 160 ml per plant with seven days' intervals and a frequency of three times. The subplot factor is melon varieties consisting of “Alisha” and “Glamour”. The findings showed that silica fertilizer significantly increased the plant height, stem diameter, internode length, total number of hermaphrodite flowers, number of hermaphrodite flowers that are swelling, while decreased the fruit moisture content and gave the best average fruit position. Instead, The “Glamour” variety gave the best response to plant growth and fruit quality. Moreover, the melon plant could absorb silica in the low category (<1% Si). The highest silica contents were found in the “Alisha” cultivar leaves and the “Glamour” cultivar's rinds treated with the silica concentration of 1.33 ppm as much as 0.34% and 0.30%, respectively.
Optimization of nutmeg (Myristica fragrans) grafting using multiple rootstock and scion types Fiolita Kermite; Winarso Drajad Widodo; Dhika Prita Hapsari
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 1 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i1.53185

Abstract

The rootstock number and scion types can be used to optimize grafting success. This study aimed to determine the effect of rootstock number, scion type, and its interaction on the success of nutmeg grafting. The research was conducted at the Seed Breeding Site in Layeni Village, Central Maluku Regency, Maluku. The research started in November 2022 and ended in August 2023. The experiment used a two-factor completely randomized design. The first factor was the rootstock number, i.e., single, double, and triple rootstocks. The second factor was the scion type, i.e., Myristica fragrans Houtt, Myristica argentea Warb, and Myristica sp. The 9 treatment combinations were replicated six times, resulting in a total of 54 experimental units. The result of the study concluded that grafting success was influenced by the rootstock number and the scion types, and there was no interaction between rootstock and scion. The highest success was achieved by using a single rootstock with a success rate of 60%. The use of Myristica sp. scions gave the highest grafting percentage of 76.66%. Successful nutmeg grafting was characterized by the presence of a fusion between the rootstock and the scion, based on anatomical observations. Failed nutmeg grafting was characterized by the absence of fusion between rootstock and scion. The rootstock number and scion type affected shoot emergence time, linked stem diameter, shoot length, and leaf number, while the scion type affected the shoot number. Double rootstock tended to have higher parameters than single and triple rootstock for shoot emergence and leaf number, but the number of failed grafting was still challenging. Keywords: anatomical; double rootstock; compatibility; incompatibility; linked stem diameter
Light Intensities Affect Canopy Architecture and Fruit Characteristics of Cayenne Pepper (Capsicum frutescens L.): Intensitas Cahaya Mempengaruhi Arsitektur Kanopi dan Karakteristik Buah Cabai Rawit (Capsicum frutescens L.) Miftakhur Rizki Hidayat Febrianto; Edi Santosa; Anas Dinurrohman Susila; Sofyan Zaman; Winarso Drajad Widodo; Dhika Prita Hapsari
Jurnal Hortikultura Indonesia (JHI) Vol 15 No 1 (2024): Jurnal Hortikultura Indonesia (JHI)
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.15.1.23-32

Abstract

Mechanical harvesting in cayenne pepper is developing, however, factors affecting canopy architecture and fruit characteristics are still lack. Study aimed to evaluate the effect of shade intensities on canopy architecture and fruit position in cayenne pepper to support developing smart harvesting tools. The experiment was conducted in Babakan Sawah Baru Experimental Farm, IPB from September 2021 to March 2022. The experiment used nested design with shade levels (no shade, 25%, 30%, 50%, 60%, 90%, and 100%) as the main plot and time of shading application (4, 6, 8, and 10 weeks after planting) as sub-plot. The canopy architecture and fruit position were affected by the shade level and its time application. Plant height increased and the canopy widened with increasing shade levels up to 50%. Thus, the shading level should be considered in the development of smart harvesting methodology. Keywords: cabai rawit, climate change, labor, low light intensity, plant architecture
Co-Authors Anas Dinurrohman Susila Dhika Prita Hapsari Diny Dinarty Edi Santosa Fiolita Kermite Haian Amin Badrieh Joan Joulanda Grace Kailola Miftakhur Rizki Hidayat Febrianto Sandra Arifin Aziz Sofyan Zaman Willy Bayuardi Suwarno