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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 JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture Jurnal Biologi Tropis jurnal Ilmu Pertanian (Agricultural Science) Agroscript: Journal of Applied Agricultural Sciences Altifani Journal: International Journal of Community Engagement
Eka Tarwaca Susila Putra
Departemen Budidaya Pertanian, Fakultas Pertanian, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Social Sciences

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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.
Physiological Responses, Growth, and Yield of Soybean (Glycine max L.) Between Rows of IP-1 Oil Palm in Response to Rhizobium sp. and Bacillus spp. Inoculation Lugito, Lugito; Respatie, Dyah Weny; Yaapar, Muhammad Nazmin; Putra, Eka Tarwaca Susila
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 2 (2025): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i2.95053

Abstract

The Indonesian population has not yet met the high demand for soybeans by domestic production. Researchers aim to increase soybean (Glycine max L.) production and optimize land use through intercropping with oil palm during the immature plant phase 1 (IP-1). This study evaluated the effectiveness of Rhizobium sp. and Bacillus spp. inoculation in enhancing the growth and yield capacity (physiological activity, growth, and productivity) of soybeans planted between rows of IP-1 oil palms at PT Perkebunan Nusantara (PTPN) IV, Serdang Bedagai Regency, North Sumatera. The field study employed a factorial randomized complete block design (RCBD) with two factors and four blocks as replicates. Data from the experiments were analyzed using analysis of variance (ANOVA), least significant difference (LSD) testing at a 5% significance level, Spearman correlation, and structural equation modeling (SEM). The results showed an interaction effect between Rhizobium sp. and Bacillus spp. inoculation on the treatment variables of plant height, number of leaves, total dry weight, nutrient uptake (N, P, and K), IAA and GA3 hormones, total Bacillus in soil, total Bacillus in roots, pod dry weight, and yield. In treatment without Rhizobium sp., soybean plants inoculated with Bacillus spp. showed a significant contribution to all treatment variables. However, in soybean plants inoculated with Rhizobium sp., the addition of Bacillus spp. did not significantly affect the physiological activity, growth, and yield of soybeans. The performance of Bacillus spp. in boosting the physiological capacity and development of soybeans slowed down in the presence of Rhizobium sp. This indicated a potential antagonistic relationship between Bacillus spp. and Rhizobium sp.
Co-Authors Achmadi Priyatmojo Aditya Herwin Dwiputra Ageng Kaloko Agung Wahyu Susilo Ahmad Afifuddin Ahmad Mustapha Mohamad Pazi, Ahmad Mustapha Mohamad Alam, Taufan Aldy Slamet Riyadi Alpandari, Heny ANDI KHAERUNI Andi Nur Cahyo Anggraeni Marganingsih Ani Widiastuti, Ani Annisa Khoiriyah Aprilia Ike Nurmalasari Arief Rahman Arizal Nur Hardiansyah Arunrat, Noppol Aryo Wijayanto Awaluddin Hamzah Ayu Ainullah Muryasani Azhari Muklis Azman, Elisa Azura Bambang Suwignyo Benediktus Dimas Surya Wirawan Benito Heru Purwanto Benny W.P. Brian Krisna BUDI SETIADI DARYONO Budiastuti Kurniasih Cahyo Wulandari Canggih Nailil Maghfiroh Deborah Gita Sakinah Dewa, Didik Indra Dewi Hs, Endang Sri 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 Endang Sulistyaningsih Erlina Ambarwati Farrasati, Rana Garusti, Garusti Hadi Sudarmo Hoerussalam, Hoerussalam Hutagalung, St Novella Angelica Ika Betty Widyastuti Ika Betty Widyastuti Ika Irmayanti JAKA WIDADA Kaloko, Ageng Kartikawati, Rina Khairi, Alfassabiq Kurniasih, Budiastuti La Ode Alwi Lathif, Yudrik Lilis Suryani Lisa Kawispa Ananda Lugito, Lugito Maghfiroh, Canggih Nailil Marsuki Iswandi, Marsuki Meilani, Radhika Pingky Meksy Dianawati Melisa Melisa Muchammad Ambar Huda Muhammad Habib Ikhwana Muhdan Syarovy Nasrudin Nasrudin Nasrudin 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 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 Silmia, Betha 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 SYAMSU ALAM Syarif, Afiya Nadhifah Teguh Iman Santoso 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 Yaapar, Muhammad Nazmin Ziaurrahman, Ahmad