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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Vegetalika Jurnal Ilmu Pertanian Agrointek Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Indonesian Journal of Biotechnology Planta Tropika SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture jurnal Ilmu Pertanian (Agricultural Science) Agroscript: Journal of Applied Agricultural Sciences
Eka Tarwaca Susila Putra
Departemen Budidaya Pertanian, Fakultas Pertanian, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Engineering Immunology & microbiology Materials Science & Nanotechnology

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Growth Responses of Sugarcane (Saccharum officinarum L.) Ratoon Cane to Vegetative Phase and Sugarcane Formula Fertilizer in Inceptisol Pradana, Yogi Wahyu; Putra, Eka Tarwaca Susila; Irwan, Siti Nurul Rofiqo
Jurnal Ilmu Pertanian Vol 11, No 1 (2026): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.108887

Abstract

Sugar demand is rising with population growth, and although sugar production increased from 2018 to 2022, it has not met national demand. To boost national sugar production, proper fertilizer management is crucial. By calculating and applying compound fertilizer formulations tailored to the specific needs of sugarcane, fertilization efficiency, productivity, and sugar yield can be enhanced. This research aimed to evaluate the performance of morphological characteristics of ratoon sugarcane in response to NPK nutrient management using specific fertilizer formulations. The field study was conducted in Sleman, Special Region of Yogyakarta, from September 2023 to December 2024. The experiment was arranged in a randomized complete block design (RCBD) with three treatments, consisting of NPKSZn (15-15-15-9-0.2) at 400 kg ha⁻¹ + ZA (21N-24S) at 600 kg ha⁻¹ (control); NPKS (14-9-18-4) at 1000 kg ha⁻¹ (Formulation 1); and NPK (23-7-14) at 1000 kg ha⁻¹ (Formulation 2), and four blocks as replications. The collected data were analyzed using Analysis of Variance (ANOVA) at a 5% significance level, followed by the Least Significant Difference (LSD) test at α = 5% to determine the most effective fertilizer formulation. The results showed that the application of these fertilizer formulations significantly affected stalk diameter, millable cane yield and brix content. These findings highlight the importance of synchronized vegetative phase fertilization to optimize ratoon cane growth and support sustainable sugarcane production in Inceptisol soils.
Pengaruh Posisi Cabang Pembuahan terhadap Pertumbuhan, Hasil, dan Mutu Buah Melon (Cucumis melo L.) dalam Sistem Fertigasi Hidroponik Muhammad Habib Ikhwana; Eka Tarwaca Susila Putra; Erlina Ambarwati
Vegetalika Vol 14, No 3 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.104670

Abstract

Melon have the potential to produce 10-20 fruits per plant; however, the quality of each fruit is often suboptimal due to inefficient assimilate distribution. This study aimed to determine the optimal fruiting branch position to maximize the growth, yield, and quality of melons in a fertigation hydroponic system. The research was conducted in a 168 m² greenhouse owned by PT Lentera Agropedia Nusantara, located in Pripih, Hargomulyo, Kulon Progo, Special Region of Yogyakarta, Indonesia. A split-plot experimental design was used, with melon cultivars (Sweet Hami and Kirin) as the main factor and fruiting branch positions (lower, middle, and upper) as the sub-factor. The results showed that middle (9th to 10th nodes) and upper (11th to 12th nodes) fruiting branches exhibited greater fruit weight, length, and diameter compared to lower branches (7th to 8th nodes). Kirin cultivar had thicker flesh, and the interaction between cultivar and branch position significantly influenced the fruit cavity diameter. Middle and upper branches produced fruits of similar quality when harvested at 70 days after planting. Fruiting on the lower branches (7th to 8th nodes) produces fruits with lower weight, length, and diameter.Considering the risks associated with fruiting on upper branches, it is recommended to maintain melons on middle branches, specifically at the 9th to 10th nodes.
Pengaruh Aplikasi Pupuk Mikro Zinc (Zn) dan Copper (Cu) terhadap Pertumbuhan dan Produktivitas Tanaman Tomat (Solanum lycopersicum L.) Sutan Tarmizi Lubis; Eka Tarwaca Susila Putra; Lisa Kawispa Ananda; Azhari Muklis
Vegetalika Vol 15, No 2 (2026): In Publish
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.116862

Abstract

This study aimed to evaluate the effect of a Zn–Cu compound micronutrient fertilizer on growth, yield components, productivity, and nutrient use efficiency of Servo tomato. The field experiment was conducted in Srigading Village, Sanden Subdistrict, Bantul Regency, Yogyakarta, Indonesia, from January to April 2025. Treatments were arranged in a single-factor Randomized Complete Block Design (RCBD) with eight fertilization levels and four replications, combining NPK fertilizer with graded doses of Zn+Cu micronutrient fertilizer. Soil nutrient analyses were conducted before and after planting, while leaf tissue nutrient analysis was performed prior to harvest. Observed parameters included vegetative growth, yield components, Relative Agronomic Effectiveness (RAE), and fertilizer-use efficiency. The results showed that the combination of micronutrient fertilizer and NPK significantly enhanced nutrient uptake and yield. The highest Cu uptake was obtained in treatment P7 (¾ NPK dose + 1.5 micronutrient dose) at 0.08137 g ha-1, while the highest Zn uptake was recorded in P4 (1 NPK dose + 1 micronutrient dose) at 0.24696 g ha-1. Treatment P7 increased branch number up to three branches per plant and produced the highest yield of 39.50 t ha-1. The RAE value exceeded 100%, indicating that the tested fertilizer was 209.38% as effective as the standard fertilization. These findings highlight that the synergy and balance between macro- and micronutrients play a more critical role in determining productivity than the high uptake of a single nutrient alone.
Macronutrient Contents and Yield of Cocoa Resulting from Two Different Rejuvenation Techniques Meilani, Radhika Pingky; Putra, Eka Tarwaca Susila; Indradewa, Didik
Caraka Tani: Journal of Sustainable Agriculture Vol 38, No 2 (2023): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v38i2.57674

Abstract

Cocoa (Theobroma cacao L.) is one of Indonesia’s leading and important export commodities. The cocoa plant rejuvenation techniques aim to increase cocoa production and quality. Ring budding and side grafting can rejuvenate old and unproductive cocoa plants. Therefore, this research was conducted with objectives: 1) to record macronutrient contents, yield components and yields of three cocoa clones, KKM 22, RCC 70 and RCC 71, rejuvenated with ring budding and side grafting, 2) to determine the best techniques in rejuvenation program for old cocoa stand based on nutrient contents, yield components, and yields indicators of three cocoa clones. This research was carried out from November 2020 to January 2021 at Cocoa Plantation, North Segayung Production Unit, Pagilaran Company. The results showed that ring-budded plants had the highest N nutrients content in leaves, stem organic-C production capacity, pods number per stand per year, dry weight bean per stand per year and dry weight bean per hectare per year, which was significantly better than side grafted plants. The macronutrient of total parts (leaves, stem, and root) trend was leaves > stem > root. The trend of macronutrients in cocoa were organic-C > N > Ca > K > Mg > P. Based on the macronutrient content of cocoa tissue, KKM 22 have a higher content of organic-C, N, P, K, Ca, and Mg compared to RCC 71 and RCC 70. The budding ring technique was the best in the rejuvenation program for old cocoa stands based on nutrient contents, yield components, and yield indicators of three cocoa clones.
Growth Responses of Sugarcane (Saccharum officinarum L.) Ratoon Cane to Vegetative Phase and Sugarcane Formula Fertilizer in Inceptisol Yogi Wahyu Pradana; Eka Tarwaca Susila Putra; Siti Nurul Rofiqo Irwan
Jurnal Ilmu Pertanian Vol 11, No 1 (2026): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.108887

Abstract

Sugar demand is rising with population growth, and although sugar production increased from 2018 to 2022, it has not met national demand. To boost national sugar production, proper fertilizer management is crucial. By calculating and applying compound fertilizer formulations tailored to the specific needs of sugarcane, fertilization efficiency, productivity, and sugar yield can be enhanced. This research aimed to evaluate the performance of morphological characteristics of ratoon sugarcane in response to NPK nutrient management using specific fertilizer formulations. The field study was conducted in Sleman, Special Region of Yogyakarta, from September 2023 to December 2024. The experiment was arranged in a randomized complete block design (RCBD) with three treatments, consisting of NPKSZn (15-15-15-9-0.2) at 400 kg ha⁻¹ + ZA (21N-24S) at 600 kg ha⁻¹ (control); NPKS (14-9-18-4) at 1000 kg ha⁻¹ (Formulation 1); and NPK (23-7-14) at 1000 kg ha⁻¹ (Formulation 2), and four blocks as replications. The collected data were analyzed using Analysis of Variance (ANOVA) at a 5% significance level, followed by the Least Significant Difference (LSD) test at α = 5% to determine the most effective fertilizer formulation. The results showed that the application of these fertilizer formulations significantly affected stalk diameter, millable cane yield and brix content. These findings highlight the importance of synchronized vegetative phase fertilization to optimize ratoon cane growth and support sustainable sugarcane production in Inceptisol soils.
Seasonal methane emissions and agronomic performance of Indonesia’s high-yielding rice cultivars on the north coastal rice fields of Central Java, Indonesia Rina Kartikawati; Budiastuti Kurniasih; Eka Tarwaca Susila Putra; Eko Hanudin; Noppol Arunrat
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 21, No 2 (2024): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v21i2.88174

Abstract

Rice contributes significantly to methane emissions. In the north coastal region of Central Java Island, flooding irrigation for high-yielding rice cultivation is used throughout the rice-producing season to reduce the salinity effect. Information on methane emissions in coastal rice fields, particularly in salt-affected soil, is still limited. This study aimed to measure the methane emissions from different high-yielding rice varieties and examine the association with agronomic performance. The study site was in the Wedung district of Demak Regency, Central Java, and the research was carried out from November 2022 to March 2023. Eight rice cultivars—Ciherang, Inpari 32, Inpari 34, Inpari 35, Biosalin 1, Biosalin 2, Inpari Unsoed 79, and Inpari 30—were investigated. The experiment was designed as a randomized block with four replications. Methane gas samples were collected during the growing season in relation to rice stages. There were substantial differences in methane emissions among the eight rice varieties. Inpari 32, Ciherang, and Biosalin 1 had higher rice yields and lower yield-scale methane emissions than the other five rice varieties. Grain production and effective tiller number were significantly (p<0.01) and inversely linked to methane emissions. We found Inpari 32, Ciherang, and Biosalin 1 to be low-methane and high-yielding rice cultivars in salt-affected soil. These findings suggest that the use of these rice varieties by coastal farmers could help mitigate greenhouse gas emissions.
Co-Authors Aditya Herwin Dwiputra Ageng Kaloko Ahmad Mustapha Mohamad Pazi, Ahmad Mustapha Mohamad Alam, Taufan Aldy Slamet Riyadi Alpandari, Heny Andi Nur Cahyo Anggraeni Marganingsih Annisa Khoiriyah Aprilia Ike Nurmalasari Arief Rahman Arizal Nur Hardiansyah Aryo Wijayanto Ayu Ainullah Muryasani Azhari Muklis Bambang Suwignyo Benediktus Dimas Surya Wirawan Benito Heru Purwanto Benny W.P. Brian Krisna BUDI SETIADI DARYONO Budiastuti Kurniasih Budiastuti Kurniasih Cahyo Wulandari Canggih Nailil Maghfiroh Deborah Gita Sakinah Dewa, Didik Indra Dewi Hs, Endang Sri Dewi Junita Dewi, Fransisca Christiana DIAH RACHMAWATI Didik Indra Dewa Didik Indra Dewa Didik Indradewa Didik Indradewa Didik Indradewa Didik Indradewa Didik Indradewa Dody Kastono Dwi Nur Shinta Febriani Dyah Weny Respatie Eka Listia Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Endang Sulistyaningsih Erlina Ambarwati Farrasati, Rana Garusti, Garusti Hutagalung, St Novella Angelica Ika Betty Widyastuti Ika Betty Widyastuti Ika Irmayanti JAKA WIDADA Kaloko, Ageng Kartikawati, Rina Khairi, Alfassabiq Kurniasih, Budiastuti Lilis Suryani Lisa Kawispa Ananda Maghfiroh, Canggih Nailil Meilani, Radhika Pingky Meksy Dianawati Melisa Melisa Muchammad Ambar Huda Muhammad Habib Ikhwana Muhdan Syarovy Nasrudin Nasrudin Noppol Arunrat Novi Yulanda Sari Nurwita, Ardian Nuzul Hijri Darlan Okti Wulandari Pradana, Yogi Wahyu Pradiko, Iput Pradina Yenny Novitasari Prapto Yudono Prapto Yudono Prapto Yudono Prapto Yudono Prapto Yudono Prapto Yudono Prasetiyanto, Lukas Priyo Prianto, Sukirno Dwiasmoro Priyono Suryanto Purnomo Purnomo Putra, Sukmana Siswandana R. Sapto Hendri Boedi Soesatyo Ramces Sitohang Ramot Christian Ratnasani Ambarwati Siniwi Resti Utari Wahyudi Rina Kartikawati Riyadi, Aldy Slamet Roberdi, Roberdi Rohlan Rogomulyo Rohman, Randi Abdur Rudi Hari Murti Ruslan Boy Sari, Reny Mita Sarlin Kusumaningrum Satiti Ratnasari Sigit Dwi Maryanto Siti Nurul Rofiqo Irwan Siti Nurul Rofiqo Irwan Siti Subandiyah Sri Trisnowati Sriyanto Waluyo Sriyanto Waluyo Sujadi Sujadi Sumaryanto Sumaryanto, Sumaryanto Supriyanta Supriyanta Suryana Riski Siregar Sutan Tarmizi Lubis Syarif, Afiya Nadhifah Thirafi, Dhaffa Agung Tohari Tohari Tohari Tohari Tony Liwang Toyip Toyip Tri Joko Tri Rini Nuringtyas Tri Utami Utomo, Condro Valentina Dwi Suci Handayani Widyastuti, Ika Betty Yogi Wahyu Pradana Ziaurrahman, Ahmad