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Dampak Dosis Urea terhadap Sifat-sifat Tanah, Populasi Mikroba, dan Produksi Sorgum (Sorghum bicolor L.) pada Tanah Latosol Bachtiar, Taufiq; Adirianto, Bayu; Hanani, Muftia; Robifahmi, Nur; Flatian, Anggi Nico; Citraresmini, Ania
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 7 No 2 (2023): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v7i2.486

Abstract

Urea Fertilizer doses are a significant factor in sorghum production. This research was conducted to study soil characteristics and sorghum production through the applications of urea fertilizer doses in Latosol soil. This research was conducted from May to September 2019 in the KST GA Siwabesy experiment field at Pasar Jumat, South Jakarta. The design used in this study was a randomized block design (CRD) with 4 treatments in the form of fertilizer N doses of 0 kg ha-1, 50 kg ha-1, 100 kg ha-1, and 200 kg ha-1. The results showed that applying N fertilization did not affect soil pH, soil P available, soil organic C, soil N total, C/N ratio, CO2 content, and soil nitrate content. N fertilization significantly affected the number of functional microbes, Azotobacter and Phosphate Solubilizing Microbes (MPF). In addition, N uptake of sorghum and dry weight of sorghum seeds increased significantly by 5.54 times and 2.29 times, respectively, from control when urea fertilizer was applied to 200 kg urea ha-1.
Efektivitas Bahan Pembenah Tanah pada Dinamika Fosforus dengan Perunutan Isotop 32P dan Hasil Jagung di Ultisol Jasinga Robifahmi, Nur; Hanani, Muftia; Bachtiar, Taufiq; Flatian, Anggi Nico
Jurnal Ilmu Pertanian Indonesia Vol. 29 No. 4 (2024): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.29.4.653

Abstract

Soil conditioners can accelerate the recovery of soil physical, chemical, and/or biological quality, thus optimizing soil productivity. The 32P isotope tracing technique was used to determine the contribution of P from soil amendments in the form of lime, biochar, and compost, as well as to study their effects on P fertilization efficiency and corn yield. The treatments included lime, biochar, compost, and combinations of these three materials. The parameters analyzed were corn yield and P contribution from P sources. This study aimed to evaluate the ability of soil amendments to increase P uptake, growth, and yield of corn, as well as to determine the P contribution from lime, biochar, and compost to corn plants using the 32P isotope tracing technique. The results on Ultisol soil from Jasinga, Bogor, showed that the combination of 3 t ha-1 lime + 15 t ha-1 biochar + 15 t ha-1 compost resulted in the highest grain weight of 45.942 g per plant; the contribution of P from the carrier materials to the grain of the combination of 3 t ha-1 lime + 15 t ha-1 biochar + 15 t ha-1 compost was 44.945 mg per plant. In conclusion, the combination of these soil conditioners can increase P availability and corn production on Ultisol soil from Jasinga, Bogor. Keywords: soil conditioner material, 32P isotope tracer technique, Ultisols
Sterilization of Zeolite Media to Increase Arbuscular Mycorrhizal Fungi Colonization in Corn and Sorghum Plants Robifahmi, Nur; Hanani, Muftia; Bachtiar, Taufiq; Flatian, Anggi Nico; Citraresmini, Ania
Journal of Tropical Mycorrhiza Vol. 3 No. 1 (2024): April
Publisher : Asosiasi Mikoriza Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58222/jtm.v3i1.71

Abstract

Productivity of crops such as maize and sorghum is often constrained by low soil fertility, especially in terms of nutrient availability. Arbuscular Mycorrhiza Fungi (FMA) can improve nutrient absorption and support plant growth through a symbiotic relationship with plant roots. However, the success of FMA colonisation is strongly influenced by the quality of the growing medium, which is often contaminated with competing microorganisms that inhibit its effectiveness. To address this issue, this study aimed to evaluate the effect of sterilisation methods on the colonisation of FMA in maize and sorghum plants. The sterilisation methods tested were autoclaving and gamma radiation. This study used a completely randomised design with 8 treatment combinations and 5 replications. Zeolite media was sterilised using autoclaving and gamma radiation at a dose of 50 kGy. Results showed that sterilisation with gamma radiation produced a higher number of mycorrhiza spores and increased root colonisation in maize and sorghum compared to autoclaving. Gamma radiation applied to one sorghum seedling resulted in the highest spore count, while two seedlings in one pot reduced colonisation efficiency due to competition for nutrients. Gamma radiation was more effective in improving the quality of growing media and supporting mycorrhiza colonisation, ultimately enhancing overall plant growth and nutrient absorption.
Application of Organic Fertilizer in Sidenuk Varieties to Reduce Using Urea Nurrobifahmi, Nurrobifahmi; Flatian, Anggi Nico; Bachtiar, Taufiq; Citraresmini, Ania; Hanani, Muftia; Slamet, Sudono
Akta Agrosia Vol 24 No 1 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sidenuk rice is a superior rice variety produced by BATAN through a radiation mutation technique.             The new varieties that have been produced need to be supported by efforts to optimize production through fertilization technology. The purpose of this study was to determine the effect of organic fertilizer which can increase growth, production and reduce the use of urea fertilizer in lowland rice optimally. The study was conducted using a completely randomized design. Each was repeated 4 times so that the total experimental unit (pot) was 32 rice pots. The treatments include (1) Control (without urea fertilizer),              (2) Control (+) 100% urea, (3) 50% urea, (4) Local microorganisms (MOL), (5) Compost, (6) Biochar , (7) Azolla, (8) Mol + Compost + Biochar + Azola + SP 36 and KCl. The results showed that the highest grain weight was found in the 100% urea treatment, which was 43.97 g plant-1. MKBA treatment    (MOL fertilizer, compost, biochar, azolla) showed values that were not significantly different from 100% urea treatment. Organic fertilizer formula (MOL fertilizer, compost, biochar, azolla) can reduce the use of urea fertilizer by 50%.
Effect of gamma irradiation on silica-enriched biochar and biofertilizer on the productivity of rice grown on degraded Latosol soil Robifahmi, Nur; Hanani, Muftia; Bachtiar, Taufiq; Flatian, Anggi Nico; Slamet, Sudono; Citraresmini, Ania
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.8471

Abstract

The degraded Latosol soil is characterized by its acidity and low organic matter content, which limits rice productivity. Improving the chemical properties of the soil is crucial for supporting the sustainability of paddy fields. This study aimed to enhance these properties using silica-enriched biochar through gamma irradiation as a biofertilizer carrier. Rice husk biochar was selected for its resistance to decomposition and was enriched with SiO? to fulfill the nutritional needs of rice plants. The treatments tested were combinations of biochar-silica formulas (F0 = no formula, F1 = biochar-silica with rice husk ash, and F2 = biochar-silica with zeolite) and NPK fertilizer doses (R0 = no fertilizer, R1 = 50% recommended dose, R2 = 100% recommended dose). The results showed that the F1 formula combined with the full NPK dose (R2) significantly improved soil structure, increased organic carbon content, and enhanced nutrient uptake efficiency, which in turn, promoted higher rice productivity. The use of silica-enriched biochar as a carrier for biofertilizers has proven effective in supporting the sustainability of paddy soils. The F1 formula with a full dose of NPK can be recommended to enhance rice productivity while maintaining soil fertility.