AMD (acid mine drainage) with low pH and high content of heavy metals is a serious environmental problem in mining activities.Proper management crucial to ensure compliance the standards quality before allowing flow public water system.The objective this study was assess efficacy increasing decreasing Fe alongside concentrations Mn addition coal fly ash (CFA) empty fruit bunch oil palm (EFBOP).A total four treatments, namely: (1) control (soil without treatment), (2) soil + EFBOP, (3) CFA,...

Summary Sorption of organic carbon ( OC ) to phyllosilicate clays and hydrous iron oxides retards its mineralization, thus contributing stabilization in soils. The degree protection varies with the nature minerals present. In a previous study, we reported that when amount exceeds sorption capacity minerals, rate mineralization is determined primarily by mineral surface area. Here, report on under conditions less loading pre‐sorbed surfaces. same suite (kaolinite, illite smectite without...

This research is motivated by the conversion of many rice fields in Indonesia for various purposes, such as residential areas, offices, industries, tourism, transportation, and other uses. The environmental change focused on this study Ultisol land into paddy fields. aim to determine differences soil physical properties, including grain density, bulk porosity, permeability, aggregate stability that have been subjected inundation. follows a Completely Randomized Design (CRD) with single...

Abstract Oil palm production is influenced by genetic variation, environmental conditions, particularly climate, and management practices. This study analyzed the time lag effects of climate factors on number bunches, average bunch weight (ABW), oil yield across four soil types: Ultisols, Entisols, Spodosols, Histosols. Conducted in Central Kalimantan, Indonesia, research covered 12 blocks (1,609.32 ha) utilized a two-stage cluster sampling method. Data variables, including rainfall,...

Abstract Coal mining that applies the open pit method has potential to generate acid mine drainage. Acid drainage (AMD) treatments must include processes mitigate significant challenges; these active treatment with high costs and process uncertainty passive its limitations. The new concept of swampy forest system involves development for AMD, which lowers costs, increases capacity, provides a natural AMD been generated. A laboratory simulation experiment was carried out obtain basic data...

Ultisols distributes spreadly in Indonesia, but this soil has low fertility. Therefore, the application of organic matter (OM) is a common management to increase The purpose study was determine role different types OM (originated from animals and plants) on availability nitrogen, phosphorus, potassium as well nitrogen uptake maize Ultisols. Soil with mass 5 kg without (control), chicken manure, cow swallow kirinyuh, babadotan, kalopo manure were incubated experimental pots for two weeks at...

Coal mining by the open-pit method creates formation of a pit lake. The ex-mining site, over time, was gradually filled with contaminated water and must be returned to quality standard compliance level. With proper treatment, lakes have potential for several benefits subsequent uses. This study aimed analyze existing condition Paringin Pit Lake at South Kalimantan identifying flow, it is parameter threshold values. results showed that lake management had been carried out supported good...

The same rainfall can cause different degrees of water stress depending on soil type, so the production response shown by plants be different. This study is essential for growers, especially in predicting oil palm based deficit each type. was conducted plantations Central Kalimantan, Indonesia, with four types 1,446.15 ha (40 blocks). source data collected from included bunch number, average weight, rainfall, and physical chemical properties last 15 years (2007 - 2021). experimental used a...

The use of fly ash as a material for amelioration has been applied in some countries. Fly is amorphous compound silicate-aluminum-iron that contains essential nutrients plants. pH about 8.5 and chemical properties can be used source neutralizing acidity the soil. This study aims to determine effect soil ameliorant on dry land paddy Kalimantan Selatan . Soil samples were taken from Sungai Riam, Tanah Laut Regency. soils Rangas, Banjar Six kilograms each placed 8-L pots. added pot with dose 0,...

Abstract Peatlands with very high C contents are generally considered a source of greenhouse gas (GHG) emissions. This research aimed to quantify the changes in peatland characteristics and GHG emission from conversion peatlands agricultural areas. Height water table, pH, electrical conductivity (EC), redox potential (Eh), organic carbon (OC), hot water-soluble C, total-N, concentrations NH 4 + , NO 3 − soluble-Al, soluble- Fe, CH CO 2 N O were quantified before after land clearing peats for...

Saidy AR, Mariana ZT, Adji FA, Nusantara RW, Fitria I, Syahrinudin. 2018. Carbon mineralization dynamics of tropical peats in relation to peat characteristics. Biodiversitas 19: 1413-1421. Understanding the carbon areas is essential significance controlling dioxide (CO2) gas emission rates. An incubation study sampled from 3 different sites Barito Basin on Borneo Island, Indonesia (uncultivated, used for paddy cultivation £ 5 years and 5-10 years) was carried out investigate a relationship...

Abstract This study replaced fly ash with palm oil fuel (POFA) in geopolymer paste and mortar. The alkaline activator was a mixture of sodium silicate solution hydroxide ratio 2.5. Three variables were evaluated: the raw material combination (100% 25% POFA substituted to ash), mass alkali (60/40, 65/35, 70/30), NaOH molarity (8 M 10 M). mortar utilized based on highest compressive strength paste. fine aggregate binder 65 35. result showed that increased as increased. substitution for from...

One of the problems in phosphate nutrient fertilization is a low level efficiency, so application arbuscular mycorrhiza often done to increase uptake. In this study mycorrhizal was applied shallots which were given P fertilizer assess effect applications on growth, yield, and This research carried out at Faculty Agriculture's Greenhouse University Lambung Mangkurat Banjarbaru from March May 2016. The seed shallot grown 5 kg soil quartz sand (3:1) fertilized by (0, 50, 100, 150, 200 250 SP-36...

High concentration of heavy metals is frequently observed as an effect mining activity. In order to determine relationship between Cr(VI) in ex-mined land and soil chemical characteristics, 15 soils were sampled from ex-coal chromate mined-lands the South Kalimantan Province. Result experiment revealed that lands contained 700 - 2645 mg Cr kg-1 soil. This research also showed 0,73-1,35% total these exist form hexavalent chromium (Cr(VI)) toxic carcinogen. Concentration correlated...

An understanding on relationship between water content and mineralization of carbon (C) nitrogen (N) across soils varying in physical chemical characteristics is required to assess the influence soil physico-chemical properties organic matter decomposition. However, such information rarely available. Relationship C N three with different measurements (water-filled pore space, gravimetric content, volumetric holding capacity) was studied through an incubation experiment for 8 weeks. Results...

al of Chemistry Volume 4(1):33-42. Artikel 3 Fly-ash (FA) is largely alkaline in nature and contains many essential elements for plant growth along with toxic metals. Therefore, fly-ash potential to be applied as soil ameliorate that may improve properties growth. In this experiment we studied the changes chemical rice production acid sulphate soils amended fly ash. Six different amounts FA, viz. 0 (100% soil), 5, 10, 20, 40 75 tones FA ha-1 were added homogenously 6 kg pots PVC then...

Reclaimed-mining soil (RMS) is characterized by low fertility, acidic pH, and high heavy metal contents. As a result, adding amendments becomes essential to support plant growth. Therefore, this research measured alterations in the characteristics of RMS, growth, accumulation plants with co-application coal fly ash (CFA) empty fruit bunches oil palm (EFBOP). In first experiment, various levels CFA (0, 75, 150 Mg ha-1) EFBOP 25, 50 were added RMS then incubated at 70% water holding capacity...

Mining is the process of extracting beneficial minerals from surface earth that have an impact on formation acid mine drainage (AMD). One method passive AMD management treatment. This study used Nested Factorial Experiment Design method. The types organic matter were empty fruit bunch oil palm (EFB) and cow dung, with doses 0 Mg ha-1 (control), 50 ha-1, 100 150 200 ha-1. Each treatment was three repeats so 30 units experimental obtained. pH value in untreated (control) reactor 3.67. initial...

The application of organic matter with a high nitrogen (N) content in combination the wood charcoal is common soil fertility management practice Ultisols. This study aims to determine availability N Ultisols, which are applied swallow droppings and charcoal. experimental design used was two-factor Completely Randomized Design (CRD), first factor being (0.5 10 t ha−1) second (0, 10, 20 ha−1), as many three repetitions. As much 200 g put into incubation site, then were added according...

The purpose of this study was to determine the effect chicken manure compost and agricultural lime on chemical characteristics planting medium, growth yield chili in floating farming system.Three treatments: (1) Control, (2) Agricultural lime, (3) Chicken were arranged a completely randomized design applied media consisting up local vegetation (water mimosa kiambang).Several soil characteristics: pH, contents organic C, NH4 + , NO3 -, available P, exchangeable K observed after a-7 day...

Objective: The aim of this study was to analyze the physical and chemical properties soil under Nephrolepis biserrata as a ground cover crop in oil palm plantations on Ultisols, Spodosols, Histosols. Theoretical Framework: research design comprehensively outlines procedures for conducting study, including data sources, collection methods, analysis techniques, ensuring clarity describing variables facilitating effective analysis. Method: used splitplot with main plot types (Ultisols,...