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INDONESIA
Planta Simbiosa : Jurnal Tanaman Pangan dan Hortikultura
Published by Politeknik Negeri Lampung
ISSN : 26854627     EISSN : 26854627     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Immunology & microbiology
Naskah yang dipublikasi merupakan karya dari hasil-hasil penelitian, ulasan (review) singkat, analisis kebijakan, catatan penelitian (research notes) mengenai teknik percobaan, alat, pengamatan, dan hasil awal percobaan (preliminary results) berkaitan dengan tanaman pangan dan hortikultura.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 4 Documents
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Search results for , issue "Vol 8 No 1 (2026)" : 4 Documents clear
Deteksi Keberadaan Bakteriofag pada Tanaman Padi yang Terinfeksi Xanthomonas oryzae pv. oryzae di Sentra Produksi Padi Daerah Istimewa Yogyakarta Irpawa, Dea Musytari Intan; Arwiyanto, Triwidodo; Sulandari, Sri; Kurniawan, Nanang
J-Plantasimbiosa Vol 8 No 1 (2026)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jplantasimbiosa.v8i1.4834

Abstract

Bacterial Leaf Blight (BLB), caused by Xanthomonas oryzae pv. oryzae (Xoo), is one of the most significant diseases affecting rice crops in Indonesia. Conventional control strategies still face various limitations, particularly regarding their efficacy and environmental impacts. This study aimed to detect the presence of bacteriophages as potential biological control agents against Xoo in the rice production centers of the Special Region of Yogyakarta. A total of 20 samples, including soil, water, and symptomatic rice leaves, were collected from infected rice fields. Plaque assays were performed to detect bacteriophage presence, followed by host range evaluations against 20 Xoo isolates. The results showed that 18 out of 20 samples produced plaques, indicating the presence of bacteriophages capable of lysing Xoo. Soil samples demonstrated a broader host range compared to water and leaf samples. These findings highlight the immense potential of bacteriophages as specific and eco-friendly biological control agents against BLB in the Yogyakarta region.
Respon Pertumbuhan dan Hasil Bawang Merah di Lahan Gambut terhadap Jenis Mulsa dan Pemupukan NPK Anci Putri, Agustina; Radian; Abdurrahman, Tatang
J-Plantasimbiosa Vol 8 No 1 (2026)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jplantasimbiosa.v8i1.4837

Abstract

Shallots, as a horticultural commodity, have great potential for development. Efforts to develop shallots require technology to provide a growing environment that meets the necessary growth conditions. The use of mulch is expected to help maintain soil moisture and reduce evaporation rates, thereby meeting the plant's water requirements. The addition of nutrients through fertilization is also expected to improve shallot productivity on peatland. This study aims to examine the interaction between the use of mulch and NPK fertilization doses in increasing agricultural yields on peatland. This research used a factorial randomized block design (RBD) with two treatment factors. The first factor was the type of mulch, consisting of four levels: no mulch (M0), rice straw (M1), black silver plastic (M2), and weed mat (M3). The second factor was the dose of NPK fertilization, which consisted of four treatments: urea 350 kg/ha, SP-36 250 kg/ha, KCL 150 kg/ha (P1); urea 300 kg/ha, SP-36 200 kg/ha, KCL 100 kg/ha (P2); urea 250 kg/ha, SP-36 150 kg/ha, KCL 100 kg/ha (P3); and urea 200 kg/ha, SP-36 100 kg/ha, KCL 90 kg/ha (P4). Each treatment was repeated three times. The research results show that the interaction of the two factors affects the relative growth rate during the 1-2 weeks after planting, 3-4 weeks after planting, the number of leaves, dry weight of the plant, the number of tubers per clump, the weight of tubers per clump, and the dry tuber weight per clump. The treatment of straw mulch and high-dose fertilizer application produced better results compared to the other treatments
Pengaruh Arang Cangkang Kelapa Sawit dan Pupuk MKP terhadap Karakter Morfofisiologi Tanaman Jagung di Tanah Aluvial Harbarisnandar, Aswin; Sasli, Iwan; Abdurrahman, Tatang
J-Plantasimbiosa Vol 8 No 1 (2026)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jplantasimbiosa.v8i1.4875

Abstract

The utilization of alluvial soils for expanding agricultural land to increase maize production is constrained by low soil pH and limited availability of macronutrients. The application of oil palm shell charcoal as a soil ameliorant has the potential to improve soil properties and enhance the effectiveness of MKP fertilizer as a source of phosphorus and potassium. This study aimed to evaluate the interactive effects of oil palm shell charcoal and MKP fertilizer on the growth and yield of maize grown on alluvial soil. The experiment was conducted in Limbung Village, Kubu Raya Regency, from September 2025 to January 2026 using a split-plot design arranged in a randomized complete block design with three replications. Oil palm shell charcoal (without and with charcoal) was assigned as the main plot, while MKP fertilizer rates (0, 50, 100, 150, and 200 kg ha⁻¹) were applied as subplots. Observed variables included vegetative growth, physiological characteristics, and yield components. The results showed that the combination of oil palm shell charcoal and MKP fertilizer significantly improved maize growth and yield. The application of oil palm shell charcoal combined with MKP fertilizer at a rate of 150 kg ha⁻¹ produced the highest and most efficient yield, with a dry shelled grain weight of 216.28 g plant⁻¹.
Pengaruh Komposisi Media Tanam dan Konsentrasi Zat Pengatur Tumbuh terhadap Pembibitan Tebu (Saccharum officinarum L.) dengan Teknik Bud Chip Krisnarini; Wulandari, Ana; Yatmin; Mangiring, Windu; Suri, Alima Maolidea; Priyadi
J-Plantasimbiosa Vol 8 No 1 (2026)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jplantasimbiosa.v8i1.4911

Abstract

The bud chip technique is an important method in sugarcane propagation, as it enables the production of a large number of seedlings while using less planting material. However, the small size of the bud cuttings results in limited nutrient reserves and endogenous hormones, which may constrain early seedling growth. Therefore, optimizing the composition of the growing media and applying plant growth regulators (PGRs) are necessary to enhance seedling growth and development.This study employed a factorial Randomized Complete Block Design (RCBD). The objectives were to determine: (1) the appropriate composition of growing media for sugarcane seedlings using the bud chip technique; (2) the effects of different concentrations of plant growth regulators (PGRs) on seedling growth; and (3) the interaction between growing media composition and PGR concentration on the growth of sugarcane seedlings. The results indicated that: (1) the use of topsoil combined with cow manure, as well as topsoil combined with cow manure and rice husk compost, resulted in comparable seedling growth, both of which were superior to the control, as reflected in shoot height, leaf number, and shoot-to-root ratio. However, no significant differences were observed among treatments in terms of time to 50% sprouting and growth percentage; (2) different concentrations of PGRs did not significantly affect seedling growth across all observed variables; and (3) no interaction was found between growing media composition and PGR concentration on sugarcane seedling growth.

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