bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nutrition management on irrigated rice fields to increase maize productivity
Authors: Suastika I W , Kasno A 
Published: February 2021

Abstract
Balanced fertilization is the main key to increase maize productivity. This paper aims to evaluate the recommendations of fertilizing N, P and K on the growth and production of maize on irrigated paddy fields. The study was conducted in three provinces of Lampung, Banten and Central Java. The experiment was carried out using a randomized block design with incomplete factorial. The number of treatments was 12 and each had 3 replications. Fertilization treatments were 4 levels of each N, P and K included Urea (0, 150, 300, 450 kg ha−1), SP-36 (0, 100, 200, 300 kg ha−1) and KCl (0, 50, 100, and 150 kg ha−1). The results showed that the yield of dry shelled maize for the three locations was obtained from a combination of fertilizer treatment with Urea fertilizer doses of 450 kg ha−1, SP-36 200 kg ha−1, and KCl 100 kg ha−1, with the respective results for the Lampung 7.77 t ha−1, Banten 7.58 t ha−1, and Central Java 7.67 t ha−1. Fertilization of N and K affected the increased stover weight and dry weight of maize kernels in Lampung, Banten, and Central Java. Meanwhile, P fertilization could not increase the stover weight and yield of maize.
Distribution of endosulfan insecticide residues on intensive shallot agriculture farming in Brebes Regency, Indonesia
Authors: Indratin  , Poniman  , Sukarjo  , Helmi M 
Published: February 2021

Abstract
Endosulfan is an insecticide from the organochlorine group which was last banned in Indonesia in 2013. Endosulfan is very effective in controlling for organisms pest management and is widely used, including for controlling pest of shallot plants. The objective of the research to determine the distribution of endosulfan residues that has been carried out in three villages representing intensive shallot planting areas in Brebes Regency. The three villages were Wanasari, Siasem, and Pebatan in Wanasari sub-District. Soil sampling was carried out in June-July 2019. The prediction area of the residual endosulfan distribution in the research was 1,853 ha. The analysis of endosulfan residues was carried out in the integrated laboratory of the Indonesian Agricultural Environment Research Institute, using the QuECheRS method. From 14 soil sampling points, eleven of them were detected containing endosulfan residues exceeding Maximum Residues Limit (MRLs) of 0.0085 mg kg−1. The distribution of endosulfan residues was mapping using the spline interpolation method and divided into five categories very low, low, medium, high, very high. Interpolation showed 68.47% of the land experienced very high endosulfan residual pollution (>0.0117 mg kg−1). These results showed that pollute agricultural land need to get priority on land remediation for sustainable agriculture.
Productivity of five herbaceous legumes species in the post tin mining area as forage sources in Bangka Island
Authors: Sajimin  , Erfandy D , Fanindi A , Harmini H , Purwantari N D 
Published: February 2021

Abstract
The objective of this study was to determine the adaptability of some herbaceous legumes grown on the soil as source of forage in post tin mining areas. The forage legumes tested were Arachis pintoi, Clitoria ternatea, Stylosanthes guiyanensis, Centrosema pascuorum cv Bundey and Lab-lab purpureus. The experiment was designed for a randomized block of five treatments and three replications. The plants were grown in plots of 5 m x 4 m with planting distance 0.5 m x 0.5 m. Plants have been pruned every 2 months at forage production. Parameter measures the production, quality and capacity of forage. Analysis of forage nutrition and digestibility in the laboratory of dry matter and organic matter. The growth rate for transplantation of three legumes A. pintoi, C. ternatea and S. guiyanensis, was 100%. The highest total forage for one year was S. guiyanensis 514.29 kg plot−1 with a carrying capacity of 12.33 AU (animal unit) and 74.02% dry matter digestibility and 73.96% organic matter. This study indicated that three (3) species C. ternatea, S. guiyanensis and A. pintoi showed an average high-life ability of up to 100%. In general, the type of legume selected in this study showed good adaptability.
Productivity and morphology of Benggala grass Riversdale cultivar (Panicum maximum cv Riversdale) on acid soils
Authors: Fanindi A , Sajimin  , Sutedi E , Herdiawan I , Harmini  
Published: February 2021

Abstract
Benggala grass is one of the forages everyday use by farmer livestock, it’s usually cultivated at suboptimal land. Acid dry land has the potential for forage development. The study aimed to determine the tolerance of Benggala grass (Panicum maximum cv Riversdale) in acid soils. The study was conducted in the greenhouse of the Research Institute of Animal Production, using a completely randomized design, ten replication for ten months. The study used acid (pH 4.5 and Al+3 0.27 cmol kg−1 ) and non-acid soils (pH 7.1). The seeds were planted in pots (40 cm in diameter and 30 cm height). The observed variables were morphological characters, productivity and reproduction. The results showed that the stem and internode diameters, internode lengths and plant height in non-acid soil were higher (P <0.05) than in the acid soil. The fresh and dry shoot weights, number of tillers, fresh and dry shoot weights, and seed weight in acid soils were lower (P <0.05). The times of booting, flowering started and length in the acidic soil was longer (P <0.05). The study concluded that the Riversdale cultivar did not exhibit tolerance on acid soil; therefore, further research is required to improve its tolerance to acid soils.
Land resources management of shallots farming: a case study in the highlands of Solok Regency, West Sumatera
Authors: Kiloes A M , Puspitasari  , Mulyono D , Syah M J A 
Published: February 2021

Abstract
Solok Regency in West Sumatera Province is one of the new development centers for shallot production in Indonesia. This region has a specific cultivation characteristic that is different from other shallot production centers, where the cultivation is done in the highlands throughout the year. It is estimated that there will be differences in yields and production techniques between the rainy and wet seasons. The purpose of this study was to investigate farming practices of shallot cultivation in the highland of Solok Regency during the dry and wet seasons. Survey on 95 shallot farmers in Solok Regency showed that the use of labour inputs, solid pesticides, leaf fertilizers, and adhesives was significantly different between the rainy season and the dry season. At the same time, the land area inputs, mulch use, organic fertilizer, chemical fertilizer, dolomite, and liquid pesticides were not significantly different. The productivity of each land unit in the rainy season is lower than that of the dry season. The results of this study are expected to be a reference for planning the application of integrated pest and disease management technology according to the appropriate season on the shallot commodity in the highlands of Solok Regency.
Trend analysis of agricultural water supply and demand for water conservation and climate change anticipation
Authors: Nurkhaida R , Rejekiningrum P 
Published: February 2021

Abstract
Various kinds of water use are likely to exceed available water supplies and sometimes neglects water conservation which further burdens availability and supply of water. Great use of water for agriculture could be reduced by developing water-saving irrigation technology and introducing water-saving commodities. This research is aimed to identify water supply, agricultural water demand, and calculate water supply-demand balance in various planting scenarios using Verhulst Logistic Logarithm. The results of the analysis indicated that the potential of water supply in 2020 will be 21,752.48 MCM and the projection in 2050 will be 25,381.01 MCM. The total agricultural water demand will be 21,615.32 MCM (in 2020) and 20,970.03 MCM (estimation in 2050). The total water demand for one cropping will be 7,952.83 MCM and 7,772.10 MCM (projection in 2050), for two croppings 15,392.47 MCM and 14,976.32 MCM (projection in 2050), and for three croppings 21,752.48 MCM and 22,515.52 MCM (projection in 2050). The analysis of water supply-demand balance in each district area for one and two croppings in 2020 and 2050 show a surplus, whereas for three croppings, some regions showed a deficit. If the trend of water supply is known, the phenomenon of climate change can be identified and anticipated.
Water filled-pore space and soil temperature related to N2O fluxes from shallot cultivated in rainy and dry season
Authors: Ariani M , Setyanto P , Wihardjaka A 
Published: February 2021

Abstract
Agricultural soils managed with a large amount of fertilizer generate nitrous oxide (N2O). This study aims to observe the N2O flux rates from four organic matter treatments and examining soil water-filled pore space (WFPS) and soil temperature in rainy and dry seasons. The experimental sites took place on a silt loam soil with four organic matter treatments, i.e., 1). No organic matter (OM), 2). Chicken manure, 3). Cattle manure, and 4). Bio-compost. N2O fluxes were measured bi-weekly during the rainy season and weekly during the dry season. Soil WFPS and soil temperature were both determine at the same time. N2O fluxes from Shallot were significantly different between rainy and dry season (p<0.01), but not between treatments. It is ranged between 3.58 to 20.19 mg N2O m−2 d−1 on the rainy season and between 0.57 to 2.79 mg N2O m−2 d−1 on dry season. The linear regression showed that both soil WFPS and soil temperature only significantly relate to N2O fluxes in the rainy season. Soil WFPS >45% lead to high N2O fluxes and higher soil temperature. This finding showed that water is one of the vital inputs to maintain in order to mitigate N2O emission from agricultural soils, whether in upland or lowland.
Sheep’s gastrointestinal helminth infection at several districts in North Sumatra
Authors: Febretrisiana A , Destomo A , Anwar  , Tiesnamurti B 
Published: February 2021

Abstract
High adaptability to the environment is an important reason for the farmer to raise sheep, one of which is the adaptation of sheep to parasite attack infections. Infection of nematode parasite is commonly found in the digestive tracts of sheep. The purpose of this activity is to investigate the gastrointestinal helminth infection in sheep in five districts in North Sumatra. This research was conducted in December 2019 to February 2020 by collecting sheep feces in the districts of Batu Bara, Labuhan Batu Utara, Asahan, Serdang Bedagai and Deli Serdang, North Sumatra. The number of eggs in stool were examined (eggs g−1) as a method of Fecal Egg Count Reduction Test (FECRT). The results showed that there was no difference in number eggs g−1 of stool in sheep that were kept with intensive and semi-intensive systems. The effect of sex, body weight and age of the sheep also showed no difference in the number of eggs g−1 of their faeces. However, the results showed that the number of sheep’s worm eggs g−1 of stool from Labuhan Batu Utara district was higher (P <0.05) when compared to other areas, which was 73.33 eggs g−1 of feces. Whereas the sheep in Deli Serdang showed the lowest number of worm eggs (P <0.05) which was 23.33 eggs g−1 of feces. In all study locations, Haemonchus contortus eggs were found in sheep feces indicates gastrointestinal heminth parasite infected sheep in those areas.
Mitigating N2O emission from chili plantation (Capsicum annuum) on the integrated pest management field school – case study in Rembang and Sukabumi Regencies, Indonesia
Authors: Hervani A , Pramono A , Mardiasih W P , Setyanto P 
Published: February 2021

Abstract
Agricultural activities such as an inorganic nitrogen fertilization and biomass burning contribute to increase the N2O emissions from the agricultural sector. Integrated Pest Management Field School (IPM) in chili plantations using organic based fertiliser and the application of silver-black plastic mulch promote to reduce the N2O emissions from agricultural sector. The purpose of this study was to investigate the reduction of N2O emissions using organic based fertilizer and silver-black plastic mulch treatment on IPM school plots in Rembang and Sukabumi Regencies. The results showed that there was no significant different on N2O emission from the organic based fertilizer and plastic mulch application to the control. However, treatment of organic based fertiliser and silver-black plastic mulch in IPM plots contribute to reduce the N2O emissions of 14% in Sukabumi and 27% in Rembang compared to conventional farmers’ technology without organic based fertiliser and plastic mulch treatments. Thus, the IPM on the chilli plantation contribute to N2O mitigation.
Potential bacteria capable of remediating mercury contaminated soils
Authors: Ginting R C B , Solihat N , Hafsari A R , Irawan  
Published: February 2021

Abstract
Mercury content in ex-artisanal and small-scale gold mining areas in Cianjur District, Province of West Java, Indonesia was 7 to 36 mg L−1. It has exceeded the threshold value for industrial land. Bioremediation of mercury using mercury-resistant bacteria is attractive to remove mercury from the environment because it is more effective and less expensive. The objective of this study was to obtain potential bacteria capable of accumulating mercury to be used to remediate mercury contaminated soils in ex-gold mining areas. Potential bacteria isolates were characterized for their phenotypic and biochemical properties using the Biolog system. Thirty-two mercury-resistant bacteria were successfully isolated from the rhizosphere of Pityrogramma tartarea growing predominantly around tailings of ex-artisanal gold mining. After screening the presence of mercury, the three best isolates showing high resistances are Pseudomonas putida R2.13 and P. maculicola R4.27 that are capable to tolerate 180 mg L−1 mercury, and Enterobacter aerogenes R3.24 that is capable to survive at 170 mg L−1. Furthermore, the three bacteria also can fix atmospheric nitrogen and solubilize phosphate, but they cannot solubilize potassium. These indicate that P. maculicola R4.27, P. putida R2.13, and E. aerogenes R3.24 are potential as bioaccumulation agents on mercury-contaminated soils.
Application of biofertilizers to increase upland rice growth, soil nitrogen and fertilizer use efficiency
Authors: Fitriatin B N , Febriani S , Yuniarti A 
Published: February 2021

Abstract
High application of inorganic fertilizer has a negative impact on soil health. To reduce the use of inorganic fertilizers, one alternative is using biofertilizers. Biofertilizers are active inoculants made from living organisms that have the ability to mobilize, facilitate and increase the availability of nutrients through biological process. The experiment was conducted to study the effect of biofertilizers and inorganic fertilizers application on growth of upland rice, N-uptake and soil nitrogen. Biofertilizers were mixture of N-fixing bacteria (Azotobacter chroococum, Azospirillum sp.) and phosphate solubilizing microbes (Pseudomonas mallei, P. cepaceae, Aspergillus niger and Penicillium sp.). The field experiment used a Randomized Block Design (RBD) with ten treatments and three replications. The treatments were control, biofertilizers doses (50 kg ha−1 and 75 kg ha−1), inorganic fertilizers (50%, 75% and 100% of recommended doses) and combination of biofertilizers and inorganic fertilizers. The result revealed that 50 kg ha−1 biofertilizers + 50% inorganic fertilizer increased growth of upland rice (the number of tillers). In addition, the application of biofertilizers increased fertilizer use efficiency.
Application of organic and biofertilizers to increase soil biota diversity and vegetable production
Authors: Hartatik W , Setyorini D 
Published: February 2021

Abstract
The diversity of soil biota and vegetable production could be increased using organic fertilizer and biofertilizer. The objective was to determine the effect of organic fertilizer and biofertilizer on soil biota and vegetable production. The experiment was arranged in a randomized block design with 6 treatments, 4 replications. The treatments were T1: farmer practice (goat manure + chicken manure (CM) + banana stem dose of 20 t ha−1), T2: ( CM+ plant residue (PT)) dose 10 t ha−1 + arbuscular mycorrhizal fungus, T3: (CM+PT) dose of 10 t ha−1 + bio-fertilizer (BF), T4: (CM+PT) dose 10 t ha−1 + Tithonia diversifolia 1 t ha−1, T5: vermicompost 12.5 t ha−1 and T6: vermicompost 10 t ha−1 + BF. The results showed that application of chicken manure + plant residue of 10 t ha−1 and biofertilizer yielded 13.3 t ha−1 of Chinese lettuce and chicken manure + plant residue of 10 t ha−1 + Tithonia yielded 3.8 t ha−1 of broccoli and the diversity of soil biota was significantly high. Vermicompost gave the lowest yield of Chinese lettuce and broccoli due to root disease causing by parasite nematode. Organic fertilizer and biofertilizer increase prospectively soil biota diversity and vegetable production.
The distribution and characteristics of peat lands in Central and South Bangka Regencies, Bangka Belitung Islands Province
Authors: Heryanto R B , Gani R A , Sukarman  
Published: February 2021

Abstract
The use of peatland for agriculture is limited due to climate change and environmental damage issues. The Peatland mapping on Bangka Island was carried out by the Indonesian Center for Agricultural Land Resources Research and Development (ICALRD) in 2019 covering an area of 23,388 ha. The purpose of this research was to map and study the characteristics of peat soils. The method used is The Guidelines for Soil Survey and Mapping, 1:50,000 Scale and Indonesian National Standard (SNI) 8473: 2018. The results showed the largest peat distribution occurred in Central Bangka Regency (13,673 ha) and smaller area in South Bangka Regency (5,030 ha). Peatlands in Central Bangka and South Bangka Regency consist of tidal topogenous peat soils and freshwater topogenous peat soils. The decomposition rate of peat consists of Organosol Saprik and Organosol Hemik, reaction of sapric and hemic peat is acidic to very acidic, cation exchange capacity is high to very high, and base saturation is very low. The average carbon stocks in peat lands in South Bangka and Central Bangka Regencies are 582.79 t ha−1 and 428.60 t ha−1, respectively. The results can be utilized by all users, especially in the framework of sustainable agricultural development.
Technology alternative for managing paddy fields exposed to natural stone industry wastewater in Cirebon Regency
Authors: Susanto B , Wiratno  , Sugandi D , Surdiyanto Y , Sutrisna N , Argo Y 
Published: February 2021

Abstract
Sediment materials and chemical compounds contained in the wastewater of the natural stone industry have adversely affected the paddy fields in the surrounding natural stone industry in several sub-districts in Cirebon Regency. This study aims to determine the impact of natural stone industry waste on paddy fields, water, and rice plants and to provide alternative technology to reduce the impacts. The method used was field survey, laboratory analysis, and FGD. The sediment material in the natural stone industry wastewater adversely affected the physical characteristics of the soil such as structural texture, and soil permeability that could inhibit the growth and development of rice plant roots. The chemical properties of the soil is still high in productivity and the level of heavy metal contamination is still below the threshold value according to GR 82/2001. However, it is necessary to immediately take control to avoid endangering the environment either to soil, water, plants, animals, or humans. Technology alternatives that recommended to reduce the impact of natural stone industry wastewater are as follows 1). Mechanical soil treatment technology; 2). Ecological engineering through the Integrated Plant and Resource Management approach; 3). Phytoremediation and Bioremediation technologies.
Amelioration of actual acid sulfate soils to improve soil chemical properties and rice yields
Authors: Maftu’ah E , Lestari Y , Pangaribuan E B , Mayasari V 
Published: February 2021

Abstract
This study aim was to determine the effectiveness of various types of ameliorant in improving soil chemical properties and rice yields in actual acid sulfate soils. The study was conducted in Tamban Baru Tengah village, Tamban Catur Subdistrict, Kapuas, Central Kalimantan, from April-September 2019. The research design used a Randomized Block Design with treatment (A1) 5 t ha−1 of lime given once at the beginning, (A2) 3 t ha−1 lime + 2 t ha−1 lime given at the rice age of 1 month, (A3) 3 t ha−1 lime + 2 t ha−1 ‘Porre’ organic fertilizer, (A4) 3 t ha−1 lime + 2 t ha−1 rice husk ask. Each treatment was replicated 4 times. Periodic soil observations included pH H2O, EC, SO4
2-, Fe2+ and Al3+, plant height, tillers number, and rice yields were observed. The results showed that the ameliorant treatment was able to reduce concentration of Fe2+ at planting from 6400 ppm to 1000-1500 ppm, SO4
2- from 8000 ppm to 2100 to 4300 ppm, Al3+ from 16.31 cmol(+) kg−1 to 5.2-6.7 cmol(+) kg−1. Lime combined with “Porre” organic fertilizer (A3) gave the highest rice yield (>17% higher than A1). The use of “Porre” organic fertilizer was able to reduce the use of lime in tidal swampland.
The use of mulch and amelioration in peatlands to increase production of red chili plants
Authors: Susilawati A , Fahmi A , Maftu’ah E , Sosiawan H 
Published: February 2021

Abstract
Red chili is a strategic commodity, production consistency in quality and quantity is needed. Peatland with all its limitations has the potential to be used as an area for chili crop development, but appropriate land management technology is needed. The purpose of this study was to determine the effect of using mulch and amelioration and fertilization for chili plants in peatlands during the rainy season. The research was conducted at Landasan Ulin, Banjarbaru. The treatments were: The use of mulch (without mulch and silver black plastic mulch) and a combination of inorganic and amelioration fertilizer doses (P1 = 50% model of inorganic fertilizer + 15 t ha−1 manure), P2 = 50% model of inorganic fertilizer + 30 t manure ha−1), P3 = Model 100% Inorganic Fertilizer + Manure 15 t ha−1), P4 = Model 100% Inorganic Fertilizer + Manure 30 t ha−1, P5 = Farmer Model. The results showed that the use of black silver mulch combined with 325 kg ha−1 urea, 225 kg ha−1 SP 36 and 200 kg KCl kg ha−1 KCl and 30 t ha−1a manure showed fruit yields of chili plants reached 15 t ha−1.
Biodegradation of antibiotic residues in chicken manure by composting processes
Authors: Salma S , Junita R E , Handayanto E , Husnain  , Irawan  , Nurida N L , Husen E 
Published: February 2021

Abstract
Chicken manure is rich in macro and micro nutrient compared to livestock manures. Unfortunately, it may also contain higher antibiotic residues that has to be minimized before applying as a manure. The objective of this research was to eliminate antibiotic residues in chicken manure using three kinds of decomposer. The experiment was conducted in greenhouse conditions. A completely randomized design with 5 replications was applied. The treatments consisted of chicken manure (CM) with 40% water content, composting CM with local microorganisms (MOL), composting CM with Consortium of Cellulolytic Fungi (CCF), and composting CM with commercial decomposer. Parameters measured were the content of Tetracycline, C, C/N, and CO2 evolution. The results showed that applying microbial decomposer eliminated 100% Tetracycline residues after 4 weeks composting. The C content and C/N decreased 34.8 to 41.8% and 15.46 to 20.30% after 6 weeks composting, respectively. The highest CO2 evolution resulted from the application of CCF and commercial decomposers. Composting chicken manure by CCF or commercial decomposer prior to be used as organic fertilizer are promising to eliminate antibiotic residues.