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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Indonesian Journal of Geography Buletin Peternakan Jurnal Ilmu Pertanian Journal of Tropical Soils Sains Tanah Pembangunan Pedesaan Journal of Degraded and Mining Lands Management Jurnal Tanah dan Air Planta Tropika Jurnal Zeolit Indonesia Livestock and Animal Research SAINS TANAH - Journal of Soil Science and Agroclimatology Agrin : Jurnal Penelitian Pertanian Martabe : Jurnal Pengabdian Kepada Masyarakat jurnal Ilmu Pertanian (Agricultural Science) JURNAL ILMIAH AGRINECA
Eko Hanudin
Jurusan Ilmu Tanah, Fakultas Pertanian, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Depok, Sleman, Yogyakarta 55281, Indonesia, Telp./fax.: (0274) 563062
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Ketersediaan Fosfor pada Tanah Andisol untuk Jagung (Zea maysL.) oleh Inokulum Bakteri Pelarut Fosfat Tamad, ,; Ma’as, Azwar; Radjagukguk, Bostang; Hanudin, Eko; Widada, Jaka
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 41 No. 2 (2013): Jurnal Agronomi Indonesia
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 (295.588 KB) | DOI: 10.24831/jai.v41i2.7516

Abstract

Andisols has relatively low phosphorus availability due to its adsorption by allophane. Phosphate solubilizing bacteria (PSB) increases the availability of P via release of adsorpted-P. The aims of this research were to determine: 1) anorganicP solubilization, 2) organic-P mineralization, 3) blocking of Andisols adsorption site, and 4) effective PSB inoculant. The research was arranged in completely randomized design, with PSB inoculant as treatment. Variables observed were solubleP, mineralize-P, adsorpted-P, pH, total acidity, PSB population, phosphatase and phythase activity, relative surface charge, and maize’s growth component. The result showed that PSB inoculation increased soluble-P from 30 to between 150 and 195 ppm P, increased mineralize-P from 23.7 to between 63.6 and 91.7 ppm P, and decreased P-adsorption from 95 to between 36 and 13%. PSB inoculation decreased the Andisols pH, increased the total acidity, PSB population, the phosphatase and phytase activity, and PSB had relatively high of relative surface charge (69%). The PSB inoculation increased maize P absorption in the range of 70 and 75 mg P plant-1, and increased relative agronomic effectiveness (RAE )between 145 and 150%. Liquid and solid PSB inoculant had no different effect in increasing maize growth. Keywords: Andisol, P release, phosphate solubilizing bacteria, phosphatase, phytase
Physiological responses, growth and productivity of oil palm (Elaeis guineensis Jacq.) as affected by boron fertilization Prasetiyanto, Lukas Priyo; Putra, Eka Tarwaca Susila; Hanudin, Eko
Jurnal Ilmu Pertanian Vol 9, No 2 (2024): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.86073

Abstract

Boron (B) is an essential micro nutrient that is needed by oil palms, especially to control productivity. The aim of this research was to determine the optimal dose of B for mature oil palms. The research was conducted at a smallholder oil palm plantation located in Katingan Region, Central Kalimantan Province from January to December 2022. The field experiment was a single factor arranged in a Randomized Complete Block Design (RCBD) with three blocks as replications. The factor tested was the dose of B fertilization, consisting of five doses, namely 0 g. trunk⁻¹. semester⁻¹ (control); 25 g. trunk⁻¹. semester⁻¹; 50 g. trunk⁻¹. semester⁻¹; 75 g. trunk⁻¹. semester⁻¹; and 100 g. trunk⁻¹. semester⁻¹. Observations were done on several variables of micro-weather characteristics at the research site, nutrient and physiological characteristics of leaf, morphological characters and plant growth, and yield and yield components of oil palms. The data obtained were then analyzed with analysis of variance (ANOVA) α=5 %, and data showing significant differences between treatments were tested with an orthogonal polynomial. The results showed that B had positive effects on leaf B, P and K concentration and absorption, leaf chlorophyll content, number of midribs, plant height, leaf area per trunk, leaf area index, crop dry weight, pollen fertility, fruit set, pollen viability, fresh fruit bunch weight (FFB) and FFB productivity. The optimal dose of B to optimize oil palms productivity was 60.24 g. trunk⁻¹. semester⁻¹ with a maximum value of FFB productivity of 6.94 tons. trunk⁻¹. semester⁻¹.
Evaluation of soil and water properties in relation to indicative rice productivity in the coastal fields of Pangandaran, West Java, Indonesia Nasrudin, Nasrudin; Kurniasih, Budiastuti; Putra, Eka Tarwaca Susila; Hanudin, Eko
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9121

Abstract

Coastal rice fields often have sandy textures, high salinity, low organic matter, and frequent waterlogging caused by seawater intrusion. These conditions, together with fluctuating rainfall, alter soil chemical properties and negatively affect crop cultivation. This study aimed to evaluate soil chemical properties, assess water quality, and analyze their relationship with rice productivity in the coastal rice fields of Pangandaran, West Java, Indonesia. Composite soil samples were collected from areas of 5-7 ha and analyzed for their chemical properties. Water quality was assessed based on the levels of dissolved oxygen (DO), nitrate, phosphate, electrical conductivity (EC), and pH. Data were analyzed descriptively, and Principal Component Analysis (PCA) was applied to group the sampling points. The results showed that organic C and total N were low to moderate, while available-Si and exchangeable K+ were very low. In contrast, P?O?, exchangeable Na+, and exchangeable Mg2+ were very high, whereas cation exchange capacity (CEC) and exchangeable Ca2+ were low to moderate. Based on EC and water table depth, PCA grouped the 20 sampling points into three clusters: high salinity (points 16-19), waterlogging (points 2-7), and relatively normal conditions (points 1, 8-15, 20). Average rice productivity was 2.48 t ha-1 in cluster 1, less than 1 t ha-1 in cluster 2, and 3,63 t ha-1 in cluster 3. These findings highlight the need for site-specific land and water management strategies to sustain rice cultivation in coastal areas.
Co-Authors , Tamad Achmad Fatchul Aziez Airlangga, Tandaditya Ariefandra Angga Ade Sahfitra ARIFIN FAHMI Bambang Hendro Sunarminto Bambang Hendro Sunarminto Bambang Hendro sunarminto Bambang Triyatmo Benito Heru Purwanto Bostang Radjagukguk Cahyo Wulandari Dewi Ratna Nurhayati Didik Indradewa Djoko Soetrisno Eka Tarwaca Susila Putra Endang Dwi Purbajanti Endang Sulistyaningsih Fajarini, Permata Harty Noor Fibrianty, Fibrianty JAKA WIDADA Jauhari Syamsiyah Johan, Erni Kartikawati, Retno Kartikawati, Rina Kurniasih, Budiastuti Lis Noer Aini, Lis Noer Mahyudi Mahyudi, Mahyudi Matsue, Naoto Ma’as, Azwar Muhammad Rif’an Mulyono Mulyono Mulyono, Mulyono Nasrudin Noer Aini, Lis Prapto Yudhono Prapto Yudono Prasetiyanto, Lukas Priyo Priyono Suryanto Puji Dyah Anggraini, Meika Kurnia Putri Ratnasari R. Djoko Sutrisno Rajiman Rajiman Riyadi, Aldy Slamet Sari Widya Utami Sri Nuryani Hidayah Utami Subur Priyono Sasmito Budhi Supriyanto Notohadisuwarno Taryono, Taryono Tohari Tohari Wiratama, Ristiya Adi Y. Prapto, Y.