bluuebunny/crossref_metadata_2025_split huggingface dataset:
Microbe population in biofertilizer with vermicompost as a carrier during the process and storage
Authors: Ulina W A S Nur , Sahar A , Rauf A , Sembiring M , Munir E , Sabrina T 
Published: December 2019

Abstract
The main problem with biofertilizer is a short storage life. Carrier materials of biofertilizer include determinants of quality and storage life. This study measured the ability of vermicompost to be used as a carrier of biofertilizers from various beneficial microbes. The study used a factorial randomized block design with 2 factors and 3 replications. The first factor was the worm and microbial application technique consisting of 4 treatments: no worm; worm applied one week after applying microbes; microbial and worm applications were applied simultaneously and microbes applied one week after applying worm. The second factor was the type of beneficial microbes consisting of 4 treatments: Azospirillum sp; Azotobacter chroococcum; Trichoderma asperellum G strains and Talaromyces pinophilus. The results obtained that after 3 and 6 weeks incubation the highest population was found at T.pinophilus (59.5-210.5×1010 CFU mL−1) and at A. chroococcum (83.5-190.5×1010 CFU mL−1, respectively. After 1 year storage, the population of A.chroococum in the carrier biovermi decreased to 50 - 90×105 CFU mL−1, T. asperellum 60 - 210 ×106 CFU mL−1 and Azospirillum 75×107 - 32×108 CFU mL−1, while T.pinophilus 60 ×106 - 45×108 CFU mL−1.
Arbuscular mycorrhiza increased N, P, K, and Fe uptake, growth and yield of vegetables grown on Andisols with different rates of NPK fertilizers
Authors: Mbusango A , Nurbaity A , Fitriatin B N , Solihin M A , Istifadah N 
Published: December 2019

Abstract
Arbuscular mycorrhizal fungi (AMF) is a biological fertilizer that can function as an ameliorant which capable in increasing plant growth and yield of plants. Some vegetables such as kangkong (Ipomoea aquatica) and lettuce (Lactuca sativa) grown in Indonesia using substantial amount of NPK lettuce which has an impact on land degradation. The aim of this experiment were to determine whether AMF application technology can reduce the use of NPK application and can increase nutrient uptake of N, P, K, Fe, growth and yield of kangkong and lettuce grown on Andisols. This experiment was carried out at Screen House in Lembang District, West Java. This study used an experimental method with split plot design with two levels and three replications and applied on two types of vegetable plants. The main plot was AMF application (without and with AMF) and sub plot was various dosages of NPK (0, 25, 50, 75, 100%) of recommended dosages. Results of this study indicated that the application of AMF increased nutrient uptakes, growth and yield of vegetables. The AMF showed highest values at a dosages of 50% NPK, in terms of parameters of plant height, leaf number, N, P, K uptakes, chlorophyll contents, fresh root weights, root lengths and total mycorrhizal root lengths. Consequently, AMF was effective at low NPK dosages and was able to reduce the use of NPK dosages up to 50%. In conclusion, AMF has potential to be used in sustainable agriculture system
Phosphate-solubilizing bacterial activity and their effect to rice growth in acid sulphate soil
Authors: Lestari Y , Annisa W 
Published: December 2019

Abstract
Efficiency of P fertilization in acid sulphate soil for rice cultivation can be improved by phosphate solubilizing bacteria (PSB) application. This study aims was to observe the capability of PSB disolved P insoluble and their effects on rice growth in acid sulphate soils at different level of P-fertilizer. PSB isolates namely P17.4.1, P17.4.2, P21.4.1 were observed their ability to dissolve tricalcium phosphate, aluminum phosphate and rock phosphate in liquid pikovskaya medium. The three PSB isolates were also examined for their effects on rice growth at different level of P-fertilizer (without fertilizer, 30 kg.ha−1. 45 kg.ha−1 and 60 kg.ha−1 P2O5) in pot experiment. The result showed that PSB were observed able to dissolve tricalcium phosphate and rock phosphate but were unable to dissolve aluminium phosphate. The pot experiment, showed that application of PSB and their interaction with P-fertilizer is not significantly influenced rice plant growth. Rice plant height and shoot dry weight are significantly influenced by application of P-fertilizer. The average of plant height in application P-fertilizer 30 kg.ha−1, 45 kg.ha−1 and 60 kg.ha−1 P2O5 increased 4.19 cm; 3.63 cm and 3.39 cm respectively compared with control. The shoot dry weight given 60 kg.ha−1 P2O5 increased by 52.13%.
Effectiveness of ameliorant and fertilizer on improving soil fertility, growth and yields of red chili in degraded peatland
Authors: Maftu’ah E , Susilawati A , Hayati A 
Published: December 2019

Abstract
The research was carried out on degraded peat land in Kalampangan village, Sebangau District, Palangkaraya, from June to October 2017. The treatments given were factor I; Types of ameliorant material (A1;100% cow manure, A2;50% cow manure+50% biochar, A3;50% cow manure+50% compost from weed in situ, A4; 50% cow manure+50% ash from weeds in situ), and factor II; Dosage of NPK fertilization (D0; without NPK, D1;50% of recommended dose; D2;100% of recommended dose, D3;150% recommended dose). The treatment was arranged in a factorial randomized block design (RBD), and repeated 3 times. Observation variables include the soil pH and P-available, The number of fruit per plant, the weight of chili and chili yields. The results showed that the highest soil pH was indicated by A4D1 treatment. However, the highest soil P indicated by the A4D3 treatment, as well as for the highest chilli yield indicated by A4D3 treatment reached 19 t/ha or increased 6% from the recommended dose (18 t/ha) on the same ameliorant treatment (A4), and increased up to 43% compared to the ameliorant A1 (100% cow manure) on the same dose of NPK fertilizer.
Improvement of waste water quality to increase planting index in acid sulphate soil of Central Kalimantan
Authors: Annisa W , Setiawati E 
Published: December 2019

Abstract
This study aimed to determine the water return effect through the application of formulas from isolates of the bacterium Thiobacillus ferroxidan in increasing the crop index in acid sulphate soil. This research was carried out during two planting seasons in the tidal swampland based on hydrological units and overflow types with crop production in MT 1 and MT 2. This study used the split plot design with main plots the water management system, namely: (1) control with an open water system (leaching); (2) inoculant formulas with closed systems (no leaching); (3) without formula with a closed system (no leaching). Subplots were types of organic materials, namely: (1) control; (2) multi organic compost; (3) farmer patterns; (4) rice husk biochar + multi organic compost. The results showed that application of Thiobacillus ferroxidan in waste channels in acid sulphate soil effectively improved wastewater quality by increasing the pH value of wastewater by 13.09%. The returning water through the application of formulas from isolates of ferroxidan in sewage can increase the crop index to IP ≥200 in acid sulphate soil and rice yields of 20.94% dry grain in the first planting season and yield of corn shelled by 34.57% in the second season.
Effect of beneficial soil microbes and inorganic fertilizers on soil nitrogen, chlorophyll and yield of upland rice on Ultisols
Authors: Fitriatin B N , Nabila M E. , Sofyan E T. , Yuniarti A , Turmuktini T 
Published: December 2019

AbstractThe beneficial soil microbes influence plant growth and soil quality. The soil microbes include phosphate solubilizing microbes and nitrogen-fixing bacteria. The experiments had been conducted to investigate the application of phosphate-solubilizing mircrobes and nitrogen-fixing bacteria and N, P, K fertilizers on soil nitrogen (N), chlorophyll and yield of upland rice on Ultisols. This experiment arranged in a factorial Randomized Block Design, consisted of two factors with three replications. The first factor consisted of beneficial soil microbes, which were without soil microbes; with microbial consortia 1(Pseudomonas mallei, P. cepaceae, Aspergillus nigerandPenicillium sp., Azotobacter chroococum, Azospirillum sp.);with microbial consortia 2(Azotobacter choroococum, A. viilandii, Azospirillum, Pseudomonas cepaceae, PenicilliumandAcitenobacter); and mixed of mcrobial consortia 1+2. The second factor were NPK fertilizers with four levels (100%, 75%, 50% and 25% dosage of recomendation). The results showed that the application of the beneficial soil microbes and N, P, K fertilizers didn’t improve soil N, chlorophyll content and yield upland rice on Ultisols.
Effect of sago palm waste compost and SP-36 fertilizer against fractionation of P on Ultisols
Authors: Kaya E , Putinella J A , Puturuhu F. 
Published: December 2019

Abstract
Ultisol is a marginal type of soil that is acidic, which is mostly cultivated for agricultural areas. Nevertheless this type of soil has many obstacles, especially from the chemical and physical properties of the soil. Some of the chemical constraints faced in the use of Ultisol soil include: low soil pH (acidic soil reaction), nutrient content especially low P nutrients and high interchangeable Al concentrations. High interchangeable Al can bind P to form Al-P (Strengit) compounds so that the P concentration in the soil solution is reduced and consequently plants lack P, besides that high metal content can poison / cause toxicity to plants so that plant growth becomes unfavorable. One effort to increase P soil solution and reduce P stability is the application of P fertilizer, but it must be accompanied by organic matter. Giving organic material to acid soils can produce organic acids that are capable of chelating Al metal so that P will be released from soil solubility and available in soil solution. The research was conducted in the laboratory analysis of soil, water and plants, as well as greenhouse Faperta Unpatti Ambon, which lasted from March - November, 2011. This study used a complete randomized design with 2 factors factorial pattern consisting of the first factor is the maturity of Sago pith Waste compost and the second factor is the phosphate fertilizer (SP-36). Other research results indicate that administration of sago pith waste Compost can independently reduce Fe-P compounds. Granting SP-36 can independently reduce Fe-P compounds. Provision of compost ell sago together with SP-36 can increase the Ca-P compounds from 17.87 to 38.53 ppm, and Al-P compounds decrease from 35.00 to 16.67 ppm.
A comparison of cation exchange capacity of organic soils determined by ammonium acetate solutions buffered at some pHs ranging between around field pH and 7.0
Authors: Gumbara R H , Darmawan  , Sumawinata B 
Published: December 2019

Abstract
Cation exchange capacity (CEC) and exchangeable cations are among two of the most important measures for determining soil characteristics and soil quality. There are various methods of measuring CEC, including the ammonium acetate method of Schollenberger and Dreibelbis (1930) which is buffered at pH 7.0 and the barium chloride-triethanolamine method of Mehlich (1938) which is buffered at pH 8.2. These CEC measurements can result in values very different from the CEC of the soil at its field pH (effective CEC or CECe), especially in acidic soils, such as organic soils, with pH-dependent CEC. Therefore, the focus of this article is the comparison of CEC of organic soils obtained using the different pH level of the extraction solution. Five organic soil and two mineral soil samples were used in this experiment. The variables tested were CEC and exchangeable cations using ammonium acetate solutions buffered at several pHs; field pHs (acidic) of 3.8, 4.2, 4.8 and neutral (7.0). Each soil sample and pH level were replicated three times. The decomposition rate of the five organic soil samples was determined using the pyrophosphate color method, which proved to be sapric. The results indicated a positive relationship between pH and CEC value, the higher the pH buffer the much higher the CEC measured. There was a considerable difference of CEC values produced from the varying pHs of extraction solution. However, the pH of the extraction had no substantial effect on measured exchangeable cations.
Application of humic substances with zeolite as carrier to increase the production of water spinach (Ipomoea reptans poir)
Authors: Suwardi  , Cholili S N , Anwar S 
Published: December 2019

Abstract
Humic substances, which are stable complex compounds that come from the decomposition of organic matter, can be extracted from organic materials such as weathered coal, compost, and soils. They can improve the physical, chemical, and biological properties of soils and, more importantly, can function as plant growth stimulants. However, when applied in liquid form into the soil, these humic substances are readily leached, so that a binding agent that is used as their carrier is needed to make them stay longer in the soil, so that plants can absorb them. In this regard, zeolite, which is a porous mineral with a high cation exchange capacity (CEC), is a promising material to serve the said purpose. Thus, this study aimed to determine the effects of humic substances and zeolite (used as humic substance carrier) on the soil properties, nutrient uptake, and growth and yield of water spinach. Using a randomized block design with 10 treatments and 2 replications, the treatments consisted of (a) control (b) zeolite at 200 kg/ha (Z20), (c) four treatments with two humic substances (Type A and Type B) administered at dosages of 5 and 10 liters/ha (HA5, HA10, HB5, and HB10), and (d) four treatment combinations of humic substances and zeolite (HA5Z20, HA10Z20, HB5Z20, and HB10Z20). Water spinach (Ipomoea reptans Poir) was planted in Latosol soil on plots measuring 3 m × 0.7 m in treatment unit. The results showed that the application of humic substance with zeolite raised the soil CEC and exchangeable Ca and increased the uptake of N, P, K, Ca, Mg, Na, Cu, Mn, Fe, and Zn by the water spinach. The highest production of water spinach was achieved in Treatment HA10Z20 (humic substance at 10 liter/ha mixed with zeolite at 20 kg/liter humic substance), with a yield of almost 2.5 times that of control.
The Effectiveness of cow manure and inorganic fertilizer on sweetcorn (Zea mays saccharata sturt) productivity
Authors: Sara D S , Mulyani O , Septianugraha R , Saribun D S 
Published: December 2019

Abstract
Sweetcorn has been treated by cow manure and inorganic fertilizer in Inceptisols. Inceptisols possesses low soil fertility and a relatively low to moderate level of organic matter content. This study has been conducted from June to December 2018 at the Field Experimental Station of Agriculture Faculty, Universitas Padjadjaran, Jatinangor, West Java. The treatments are as follow: A = Control, B = Standard NPK, C = 0 NPK + 1 cow manure, D = ¼ NPK + 1 cow manure, E = ½ NPK + 1 cow manure, F = ¾ NPK + 1 cow manure, G = 1 NPK + 1 cow manure, H = ¾ NPK + ¼ cow manure, I = ¾ NPK +½ cow manure and J = ¾ NPK + ¾ cow manure. The combination of cow manure and inorganic performed the best result.
Soil surface properties control the stabilization of organic matter in the raised-bed soils of tidal swamplands
Authors: Saidy A R , Khairullah I , Septiana M , Triatmoko E 
Published: December 2019

Abstract
Stabilization of organic carbon (OC) in raised-bed soils of tidal swamplands reduces greenhouse gas emissions and increases soil OC contents. However, factors controlling OC stabilization in the raised-bed soils of tidal swamplands remain unclear. Relationship between OC contents of bulk raised-bed soils differing ages (2, 8, 15 and 26 years) and soil surface properties was quantified to determine soil properties control OC stabilization in the raised-bed soils. The OC contents were also measured for different soil particle size fractions: clay+silt (0–50 μm), fine sand (50–200 μm), and coarse sand (200–2000 μm). Results of the study showed that the OC contents of bulk soils decreased significantly when the age of raised-bed reached to 26 years. This decrease may attribute to the changes in soil surface properties (clay content, exchangeable Ca, dithionite-extractable Fe, oxalate-extractable Fe and Al, and soil reactivity) with increasing the age of raised-beds. Reduction is OC contents was observed all soil fractions with increasing the age of raised-bed soils. The OC losses after 26 years of cultivation were 83%, 71%, and 11% in the coarse sand, fine sand and the clay+silt fractions, respectively. Results obtained in this study suggest the important role of clay+silt fraction in the long-term accumulation of OC in the raised-bed soils.
Bio agent added organomineral nitrogen fertilizer for heavy metal contaminated paddy field treatment
Authors: Sudirja R , Permana I , Rosniawaty S 
Published: December 2019

Abstract
Industrial waste in paddy field leads to accumulation of heavy metals in the soils. The availability of heavy metal on the soil can affect soil quality and plant growth. The objectives of this research were to obtain the best dosage of bio agent-added organomineral nitrogen fertilizer (ONF+BA) for the improvement of soil quality and paddy rice grown in industrial-waste contaminated soil. Randomized block design were applied with six single treatments: 150 kg ONF+BA (A), 200 kg ONF+BA (B), 250 kg ONF+BA (C), 300 kg ONF+BA (D), 350 kg ONF+BA (E), 250 kg urea (F), each treatment was replicated five times. The result showed that the application of ONF+BA reduced lead (Pb) and chrome (Cr) solubility and foliar accumulation, improved plant growth, and increase foliage nitrogen content. The doses of 300 kg ONF+BA shown highest lead and chrome solubility reduction, while 350 kg ONF+BA decrease foliar accumulation of lead and chrome.
Beneficial impact and its role of liquid bio fertilizer from liquid waste fermentation on coffee growth to support innovative agrotourism
Authors: Kariada I K , Darsana I G K 
Published: December 2019

Abstract
In managing organic coffee farming at Wanagiri village, Sukasada subdisrict of Buleleng, once a year farmers are faced by the problems of high volume of liquid waste produced from wet coffee processing. This waste usually danger to soil and crops, all plants dead when thouch with this waste. Improvement of the soil need to take at least 6 month to be normal again. The purpose of this study is to create technology in solving this waste problem through implementing fermentation by using indigenous micro organism(IMO) which finally produce liquid bio fertilizer. This fertilizer is then examined to the field research on coffee. In applying bio fertilizer for coffee crop it is shown that dilluting 5 times with water can produce better result for all parameter measured as indicated by high significant different amongst treatment. Therefore, liquid waste which was exsposed as the main factor to break soil condition, in contrast now become a fruitful benefit for farmers in order to fulfill the need of organic fertilizer to protect organic sertification.
The response of first year immature oil palm to compound fertilizers of NPK
Authors: Satriawan H , Fuady Z , Fitri R 
Published: December 2019

Abstract
This research aims to analyse the morphological response of oil palm plants of the first year immature to the provision of compound fertilizer (NPK). The treatment design uses a Randomized Complete Block Design, grouping based on the slope of the land. The treatment applied consisted of 4 treatments, namely M0: 60 kg organic fertilizer, rock phosphate 500 g and dolomite 500 g plant−1 as a control treatment; M1: 650 g NPK + 25 g borate + 25 g copprer sulfate plant−1; M2: 1300 g NPK + 25 g borate + 25 g copprer sulfate plant−1; M3: 2 600 g NPK + 25 g borate + 25 copprer sulfate plant−1. The observations of plant morphology include: plant height, stem circumference, number of leaf midribs, 9th leaf midrib length, leaf area on the 9th midrib. The results showed that the compound fertilizer package in general had not shown a significant effect on morphological variables, except for the stem circumference of the age of 3 month after treatment(MAT) and leaf area aged 1 and 3 MAT. In general, the higher the dose of compound fertilizer (NPK), the better the growth of plants.
Application of organic materials to improve the growth and yield of maize in an acid soil of Southeast Sulawesi
Authors: Ginting S , Hemon T , Syaf H , Faad H , Padangaran A 
Published: December 2019

Abstract
The experiment was conducted consisting of three different sources of organic materials (plant bokashi: PB; soaked outershell coconut: SOC; and arbuscular mycorhiza: AM) using four treatments and four rates of organic materials including control. Maize was grown in mixed soil-organic materials in the polybags and observed at 14, 28, 42 and 72 days after planting (DAP). The results showed that the application of PB, AM and SOC significantly increased growth and yield of maize. Increasing the effects depend on the type of source and rate of organic material additions. PB had the greater effects than AM and SOC. The use of PB at 150 g polybag1 improved 53% plant height, 131% plant diameter and 92% leaf number at 14 DAP; and increased 47% cob length, 43% cob diameter and 78% of cob weight at 72 DAP. The application of organic materials improved organic C, total N, P- and K-availables. This experiment demonstrated that PB produced higher nutrients than AM and SOC. Thus, PB which originated from bokashi of 1:1 weight ratio of leaves of ‘gamal’ (Gliricidia sepium) and ‘komba-komba’ (Eupatorium odoratum) could be used as organic fertilizer for growth and yield of maize in an acid soil.
The change of microbial communities in rhizomicrobiome due to the land management
Authors: Syarifain R I , Anggrainy E D , Sudirja R , Sofyan E T , Simarmata T 
Published: December 2019

AbstractThe soil ecosystem plays an important role in soil health, nutrient availability, and agriculture productivity. Ecosystem alteration from natural forest into oil palm plantation has occurred in the past few years. Therefore, it is needed to study the microbial abundance which has a great role in the nutrient cycle. This experiment was conducted in August 2018 to January 2019. The experiment was arranged as randomized block design consisted of six ecosystems (natural forest, 2008 oil palm plantation, 2009 oil palm plantation, 2010 oil palm plantation, 2011 oil palm plantation, and 2018 oil palm plantation) and provided with four replications, using total plate count. The results showed that natural forest had the highest microbial communities of rhizomicrobiome (total bacteria 35.73×109, PSB 13.88×106, total actinomycetes 18.63x106, and total fungi 1.53×105)CFUg−1, followed by 2008 oil palm plantation which had the highest NFB 7.7×106CFUg−1. 2011 oil palm plantation had the lowest microbial communities of rhizomicrobiome (total bacteria 11.06×109, PSB 2.93×106, NFB 7.76x106, total actinomycetes 2.91×106, and total fungi 0.26×105)CFUg−1. The research revealed that the alteration of natural forest to agricultural ecosystem influences the richness of microbial population in rhizomicrobiome which has a great role soil health, nutrient availability, and agriculture productivity.