bluuebunny/crossref_metadata_2025 huggingface dataset:
Millimeter-wave Respiratory Rate Detection System with WiFi and Android Platform
Authors: Fang Yunjie , Bao Xingda , Ye Jingcheng
Published: June 2020

Sleep monitoring is widely used in health monitoring. Sleep respiratory rate is an important indicator of sleep quality. This paper designs a respiratory frequency monitoring system based on millimeter-wave radar, WiFi communication module and an Android-based mobile terminal APP. The respiratory data collected by the millimeter-wave radar is transmitted to the mobile phone through WiFi module. The phone can directly display the respiratory frequency data and the respiratory frequency in a curve manner. After testing, the system runs stably and reliably, has real-time performance and strong portability, and provides a new application method for millimeter-wave radar.
Stair Climbing Multifunctional Walking Robot
Authors: Zhang Sijia , Guo Lefan , Wang Zhenyi
Published: June 2020

China has the largest number of elderly people in the world, and many of them have the problem of mobility. At present, there are some problems in the market, such as single function, difficult operation and lack of safety protection. The walking aid robot can not only meet the demands of the old people, satisfy the basic requirement of walking or the transfer between sitting and standing, but can also help the old grab objects from the further place. It has the advantages of simple operation, abundant functions, low cost in maintenance, high degree in safety index and so on, which can completely meet the needs of modern society.
Design of bag filter for micro pulverizer
Authors: Liu Mingming , Wang Ning , Shan Ying , Zhao Peiyuan
Published: June 2020

In feed industry, a lot of dust will be produced in the process of raw material comminution, which will cause environmental pollution and be harmful to the health of workers and so on. In this paper, a kind of bag filter for micro pulverizer in feed industry is designed. The bag filter was firstly carried out, including the design of the overall scheme, the calculation of filtering wind speed, the filter bag parameters, the blowing component system, and the specific structure design of the dust collector according to the dust processing capacity and dust characteristics. The test proves that this bag filter has an average dust removal efficiency of more than 96%, which can effectively deal with the dust generated by the micro pulverizer, and provide an application reference for solving this type of dust pollution treatment.
Trajectory Planning of a Planar Cable-Driven Robot for Industrial Detection
Authors: Hong Yifan , Tan Jianping
Published: June 2020

This paper presents a planar two-degree-of-freedom cable-driven robot for detecting the surface defect of the boiler pipes. The mechanism is first described and inverse solution laws of position, velocity and acceleration are studied based on the dynamic model of the cable-driven robot. A linear trajectory planning approach is developed, which is based on the position discrete differential and trapezoidal speed planning. An example trajectory is presented, then simulating and analyzing the change law of the length and velocity of the driving cable based on the point-to-point linear trajectory planning algorithm. The research shows that the length of the cable is continuously changed, which ensures that the end-effector of cable-driven robot can run smoothly, continuously, and accurately during the industrial detection.
Troubleshooting and Fault Analysis of Cabin Odors of Civil Aircraft
Authors: Bao Guangyu , Yang Zhi , Wang Dawei , Huo Xiheng , Ma Xiangdong
Published: June 2020

The cause of cabin odors is usually hard to be identified when there is no specific crew alerts or indications, which could have a catastrophic effect on civil aircrafts. Fault analysis has been conducted based on FTA (Fault Tree Analysis) in this paper to locate fault sources of cabin odors. A checklist is recommended to be performed during the flight or ground tests afterwards, which could provide quantitative references. An actual case applying the troubleshooting and analysis method above is shared at the end.
Research on the thermal aging life prediction of XLPE cable
Authors: Lin Jingdong , Cai Li
Published: June 2020

Crosslinked polyethylene(XLPE) cable is one of the most important tools to transmit electric energy and electrical signals, but its insulation material is vulnerable to damage due to the complex working environment. If the aging cable is not replaced in time, it will easily cause fire and threaten the safety of life and property. Life prediction of cables is essential to ensure reliable operation. Hence, the objective of this study is to provide a theoretical basis for cable replacement. This paper, firstly, focuses on the thermal aging mechanism of cable. Based on Arrhenius Model, multivariate nonlinear regression method was used to process the data and the thermal aging life prediction model of cable had been derived. From the real operation perspective, the reliability of the model was analyzed. 50% of retention of elongation at break was measured as an indicator of the failure point, the life evaluations of cable was carried out. The result indicates that the service life of cable at 90 °C is 32.2 a.
Real-time FFSN Detection Method Based on Hurst Exponent
Authors: Wang Jiajia , Chen Yu
Published: June 2020

In this paper, a real-time detection method of FFSN is designed. The response delay time of domain name is extracted by passive method. According to the self-similarity of response delay time of legitimate domain name and the difference of response delay time between legitimate domain name and FFSN, VTP analysis method based on Hurst exponent is used to detect FFSN. In order to avoid false alarm caused by the network itself, the suspected network also needs to be used the active method to judge the fast flux attribute in order to confirm the existence of FFSN. Our method can not only detect the existence of FFSN in real time, but also give the specific FFSN domain name. The experimental results show the effectiveness of our method.
Analysis of China’s Smart City Upgrade and Smart Logistics Development under the COVID-19 Epidemic
Authors: Wang Xueliang , Le Xiaobing , Lu Qiuyun
Published: June 2020

Affected by the COVID-19 epidemic, smart city and logistics in China have been developed significantly. This study is based on the accelerated development of smart cities and smart logistics after the outbreak of COVID-19 in China, and combined with literature, it puts forward the update of smart cities and the trend of gradually centralized, intelligent and intensive development of China’s logistics industry.
CFD Simulation Analysis on Aerodynamic Parameters of Steel Tubular Transmission Tower Body
Authors: Yang Fengli , Zhang Hongjie , Shao Shuai , Huang Guo , Wang Fei
Published: June 2020

This paper utilizes the CFD simulation analysis method, calculates and analyzes the distribution characteristics of streaming around the typical steel tubular transmission tower body and the pressure field, researches the change law of wind load force (torque) coefficient along with each main shaft direction o tower body, and then compares it with corresponding wind tunnel test result, and verifies the adaptability of this CFD simulation result. The result shows that the pole member in the upwind direction on the steel tubular tower has obvious disturbance and shielding effect to wind speed distribution around the pole member of downwind direction. The wind direction has obvious influence on the aerodynamic (torque) parameters of tower body, especially the steel tubular - angle steel combined tower body. The above research result provides a certain theoretical support and value taking basis for the wind-resistant design of steel tubular transmission tower body.
Analysis of Hydrodynamic Performance of Ducted Paddle with Front Rectifying Guide Blade
Authors: Hao Zongrui , Ren Wanlong , Zhang Hao , Hua Zhili , Wang Yue
Published: June 2020

The SST k-ω model is used to simulate the open water performance of the ducted propeller, and the hydrodynamic performance is compared with the experimental results. The SST k-ω model is validated to effectively predict the hydrodynamic performance of ducted propellers. Based on the analysis of the optimization of the ducted propeller, guide blades are installed in front of the blades to improve the performance of the ducted propellers. The performance of the ducted propellers on the ducted propellers is analyzed, and the influence laws are studied to provide a theoretical basis for the subsequent improvement of the ducted propellers.
Performance analysis of single-channel pump with different wrap angles
Authors: Hao Zongrui , Ren Wanlong , Xu Juan , Zhang Hao , Wang Yue
Published: June 2020

When a single-channel pump is used to transport living things, the rotating action of the impeller will cause damages to the living things. To improve the survival rate of the single-channel pump for transporting living things and improve the performance, the effect of the impeller wrap angle on the performance of the single-channel pump was studied by numerical simulation. The external characteristic curve is analyzed and the change of the pressure field of the flow field in the flow channel with the wrap angle is grasped. The pressure pulsation at the monitoring points is analyzed, and the influence law of the wrap angle on the performance of the single-channel pump is obtained. This law lays the foundation for subsequent single-channel pump design
Research on control technology of RS422A differential time-unified signal
Authors: Lv Wenfa
Published: June 2020

RS422A differential signal is a kind of bipolar pulse signal formed by level conversion of TTL signal through RS422A differential transmission device.Using shielded twisted pair transmission, the signal level is determined by the voltage difference between the two twisted pairs at the same time. It has the characteristics of long transmission distance and strong anti-interference ability.The time system signal is a standard RS422 differential signal, which plays an important role in the fire control system. The complex programmable logic device CPLD, the high-precision temperature-compensated crystal oscillator, and the standard RS422A differential transceiver device are used as the control device in this article. The control methods for generating, detecting, sending and receiving, adjusting the pulse width and synchronizing the timing signals are elaborated in detail.This method has the characteristics of simple circuit, high reliability, flexible control, high control accuracy, etc. It is widely used in fire control systems.
Optimization of Large-scaled Random Access Congestion Control Oriented to Narrow Band Internet of Things
Authors: Wang Li , Wang Wei , Hu Xianhua , Xie Tairong
Published: June 2020

Narrow band internet of things (NB-IoT), as an important low-power wide-area coverage of 5G with independent intellectual property rights, has great potential in small data monitoring of urban power transmission and distribution. However, it is extremely easy to cause congestion and overloading of the system upon large-scaled terminal requests for random access, which will decrease network access performance and bring great challenges to promote NB-IoT in urban power Internet of Things. On this basis, a mathematical model of network load was constructed to estimate and predict load changes. Then, a dynamic adjustment functional model was set up according to dynamic adjustment of access parameter optimization based on loads. Based on above idea, a random access algorithm based on dynamic parameter adjustment in accordance to dynamic priority was developed. It increases the success rate of devices access to NB-IoT system, decreases access delay of devices, and relieves network congestion. According to simulation results, the proposed algorithm has higher access success rate, lower total delay. And it guarantees delay for important node users and more optimized network performances compared with traditional network access algorithms.
Design of high-precision micro-automatic control system based on Segmentation driven and closed-loop control
Authors: Chen Dapeng
Published: June 2020

The high-precision micro-infusion automatic control system is an automatic infusion system that replaces manual infusion which solves the risk that the traditional infusion volume and speed cannot be controlled. By analyzing the system composition and configuration, it is determined that the system actuator belongs to the field of multi-body mechanics. After analysis of the system mechanics model, it is ensured that the mechanical performance of the designed system’s actuator meets the requirements. At the same time, the motor control method of subdivision drive and closed-loop control used in the design is described in detail, and the dynamic characteristics of the system are simulated and analyzed. High-precision and reliability control ensure that the medicine can enter the patient’s body uniformly, accurately and safely, and meet the design requirements.
Algorithmic Models for MicroBlog Information Mining System
Authors: Leng Jing , Xu Wei
Published: June 2020

Based on the “MicroBlog Community Massive Information Mining and Monitoring System”, this paper introduced the algorithm and model construction of microblog information word processing and mining conversion core functions of microblog information subsystem, in order to obtain the information objects needed in each link of the process of microblog information mining, which provides a basis for the realization of monitoring and early warning in the MicroBlog monitoring platform.
Marine collagen-chitosan-fucoidan cryogels as cell-laden biocomposites envisaging tissue engineering
Authors: Carvalho Duarte Nuno , López-Cebral Rita , Sousa Rita O , Alves Ana L , Reys Lara L , Silva Simone S , Oliveira J Miguel , Reis Rui L , Silva Tiago H
Published: June 2020

The combination of marine origin biopolymers for tissue engineering (TE) applications is of high interest, due to their similarities with the proteins and polysaccharides present in the extracellular matrix of different human tissues. This manuscript reports on innovative collagen-chitosan-fucoidan cryogels formed by the simultaneous blending of these three marine polymers in a chemical-free crosslinking approach. The physicochemical characterization of marine biopolymers comprised FTIR, amino acid analysis, circular dichroism and SDS-PAGE, and suggested that the jellyfish collagen used in the cryogels was not denatured (preserved the triple helical structure) and had similarities with type II collagen. The chitosan presented a high deacetylation degree (90.1%) that can strongly influence the polymer physicochemical properties and biomaterial formation. By its turn, rheology, and SEM studies confirmed that these novel cryogels present interesting properties for TE purposes, such as effective blending of biopolymers without visible material segregation, mechanical stability (strong viscoelastic character), as well as adequate porosity to support cell proliferation and exchange of nutrients and waste products. Additionally, in vitro cellular assessments of all cryogel formulations revealed a non-cytotoxic behavior. The MTS test, live/dead assay and cell morphology assessment (phalloidin DAPI) showed that cryogels can provide a proper microenvironment for cell culturing, supporting cell viability and promoting cell proliferation. Overall, the obtained results suggest that the novel collagen-chitosan-fucoidan cryogels herein presented are promising scaffolds envisaging tissue engineering purposes, as both acellular biomaterials or cell-laden cryogels.
Tolerance level of several hybrid maize genotypes to waterlogging stress
Authors: Muliadi Ahmad , Effendi Roy , Azrai dan Muhammad
Published: June 2020

Waterlogging is one of the most important constraints for maize production and productivity in many parts of the world, caused by flooding, continuous rainfall coupled with inadequate drainage or a high water table. The objective of this study was to determine the tolerance level of several hybrid maize genotypes to waterlogging stress. Screening of 27 hybrid maize genotypes was carried out in waterlogged condition and not waterlogged condition (as control) in a green house using a plastic cup of 300 ml volume in a randomized block design, 3 replications. Each genotype was planted in 5 seeds, grown by watering to V1-V2 phase which is characterized by the appearance of 1-2 complete leaves. Screening on waterlogged conditions performed on plastic-coated wooden tub. The water level during flooding is kept the same for 5 days. The results showed that the estimation of tolerance of hybrid maize genotypes to waterlogging using a flooding sensitivity index (FSI) which was calculated based on certain variables showed different FSI values for each variable. Determination of variables that have a large influence on the diversity of tolerance of maize genotypes to waterlogging can be known from the results of Principal Component Analysis. The results of the analysis show that the first principle component, the variable which has a big influence on the diversity of maize genotype tolerance to waterlogging stress is the number of roots with a proportion of diversity of 37.3%. The second principle component shows that the root length variable has a big influence with a proportion of variance of 22.52%. The cumulative proportion of the first and second major components is quite large at 59.83%. Based on the FSI root length variable, there are 3 hybrid maize genotypes that are tolerant of standing water while in the root number variable there are 13 tolerant genotypes with average fresh weight of shoot character, root number and stomata density higher than that in normal conditions.
Assessment of genetic relationship and heritability among F2 generation of four crosses in rice using agro-morphological markers
Authors: Kusmiyati F , Kristanto B A , Lisnawati N , Herwibawa B
Published: June 2020

Due to its higher consumption in Asian populations, white rice may lead to increase risk of developing type 2 diabetes mellitus. The glycaemic index of rice renders it the main contributor to dietary glycaemic load. Even though there are abundant rice genetic resources, the incorporation of germplasm sources is very important when looking for new alleles that play a role to prevention of the type 2 diabetes mellitus. Four rice cultivars were crossed to obtain low glycaemic index genotype in our previous research. In this paper, the agro-morphological markers of F2 generation were further assessed for genetic relationship and heritability. Furthermore, our results showed variation among the F2 generation rice genotypes in terms of agro-morhological trais studied is low. This could be an implication of the presence of a narrow genetic resources of these genotypes. Low heritabilities were observed for plant height, culm color, harvest time, flowering time, number of tillers, panicles length, and grain yield per plant, except panicle weight. Dendrogram contained four main clusters, which confirm genetic relationship among the genotypes. The improved rice genotypes from cluster IV (F2-SP, FS-GL, F2-SL, F2-LS) and cluster II (F2-PS and F2-LG) were identified with distinct genetic attributes useful in future low-glycaemic index with fine grain rice breeding program.
Marker selection on F2 population of Setail and ARC 12596 crossing
Authors: Ismayanti R , Isnaini RNL , Muliadi A
Published: June 2020

Tungro is an important rice disease. Rice tungro disease can decrease rice production. Resistance variety can be applied in plant breeding activities. Furthermore, using tungro resistance varieties more effective and efficient to control tungro disease. But, using resistance varieties continuously can breakdown resistance level because this character has durability. Therefore, the breeding of tungro resistance varieties should be done continuously. Breeding of tungro resistance can be held by using parental which resistance variety of tungro cross is with parental which have a specific location and have liked by farmers. This combination has a purpose to get tungro resistance which has a specific location. After crossing, the next step is to select the filial. This step should be done to evaluate the filial of cross-pollination and to get early line tungro resistance for the next material selection. The selection can be held by conventional and in-conventional or mix of both. The best selection is using mix procedure between conventional and in-conventional. Conventional selection is based on the standard evaluation system for rice (SES) IRRI. An in-conventional technique using SSR because it has an accurate technique to get genotype selection and purity evaluation. The purpose of this research is to know which SSR marker have linkage with tungro resistance in filial of a cross between tungro resistance parental and specific location. There are 3 markers SSR which can differentiate Setail and ARC 12596 to tungro disease those are RM 314, RM 212, and RM 288. Marker RM 314 has a chance to be a tungro resistance linkage marker from ARC 12596.
Agronomic characters evaluation of sweet sorghum bicolor (l.) moench mutants
Authors: Lestari E G , Dewi I S , Yunita R , Nur A
Published: June 2020

Sorghum is an annual crop with a lot of varieties. Recently, sweet sorghum is recognized as a potential new generation bioenergy crop because of its potential to accumulate sugar (10-15%) in its stalk similar to sugarcane, apart from producing grains. This study aims to evaluate agronomic characters including sugar contents of M3 and M4 population of sweet sorghum mutants derived from Numbu variety. The mutants were produced by combining in-vitro culture with induced mutation using gamma ray irradiation. The study was conducted at ICABIOGRAD Experiment Station (KP Cikeumeuh) in Bogor-Indonesia from July 2015 to June 2016. The study was arranged in augmented, the selection of selected lines for the next test material was based on agronomic characteristics of plant height, stem diameter and sugar Brix, which were superior to its parents, namely Numbu. The selection of selected lines for the next test material is based on agronomic characteristics of plant height, stem diameter and sugar Brix, which is superior to its parents, namely Numbu. Evaluation and selection in M3 and M4 population were focused on important agronomic characters such as plant height, stem diameter, stem sugar content, panicle length and weight, and yield/plant. The results indicated that 13 mutants having higher plant, bigger stem diameter, higher Brix value, seed production and higher yield/plant than their parent, Numbu. Have been selected from M3 and M4 population the selected mutants (M5) will be used further for yield trials.
Effect of sucrose on calus induction and green plantlet regeneration in anther culture of Indica x Indica rice
Authors: Dewi I S , Safitri H , Purwoko B S
Published: June 2020

Anther culture is an important biotechnological tool. By rice anther culture homozygous pure lines in the form of doubled haploid (DH) plants can be produced within a year as compared to the long inbreeding method, which might take 8-10 years. Application of anther culture technique in breeding and genetics research is limited due to the very low regeneration frequency of anthers of rice in general, and indica cultivars in particular. Therefore, the successful use of the technique depends on the adequate production of DH plants for selection and field evaluation. Effect of various concentrations of sucrose in callus induction media was investigated on callus induction and regeneration of green plantlets from anther culture of several F1s derived from indica x indica crosses. Cold pretreated anthers of five genotype of anther donor plants (F1s) at 5 °C for 8 days were cultured on N6 callus induction medium containing sucrose at a concentration of 6.0%, 6.5%, and 7.0%. Results revealed that all genotypes showed similar response to callus induction, but a significantly different responses to plant regeneration depended on sucrose level in the callus induction media. Two genotypes, i.e. IR78788 / Inpara 5 and Dendang/Inpari 30 only regenerated albino plantlets. In this experiment, 6.5% sucrose compared to two other sucrose treatments was suitable for inducing high frequency callus induction and high green plant regeneration in all genotypes. The high concentration of sucrose (7.0%) in the culture medium not only resulted in a decrease in the number and percentage of callus formation but also decreased the regeneration of green plantlets.
Genotype x environment interaction of rice genotype
Authors: Sitaresmi T , Susanto U , Pramudyawardani E F , Nafisah  , Nugraha Y , Sasmita P
Published: June 2020

Grain yield was influenced by genotype, environment and, genotype x environment interaction, so the maximum potential of rice will appear when planted in a suitable environment. The study aims to estimate grain yield stability of 20 genotypes of rice in dry season of 2014 in three locations. The experimental design used was a randomized complete block design with three replications. The average grain yield of the three locations ranged from 5.60 to 7.89 ton/ha. Based on the combined analysis of variance, the interaction between the genotype x environment was significant. Six lines have grain yield were not significantly different fromCiherang, which were BP5168F-KN-16-3, BP4114-7f-Kn-22-2-KLT-2*B-SKI- 1*B, BP5168f-kn-16-3-KLT-2*B-SKI-1*B, BP11282f-Kn-4-3-KLT-2*B, BP5478-1f-Kn-19-1-2-KLT-2*B-SKI-1*B, and HHZ12-SAL2-Y3-Y1. Only OBS 8412 which has grain yield higher than Ciherang. Based on the coefficient of regression and coefficient of variability, HHZ12-SAL2-Y3-Y1 and OBS 8412 were stable and have general adaptability in Cilacap, Sukabumi, and Kebumen. BP12244-20-3-1-3 and HHZ12-SAL8-Y1-Y2 were specifically adapted in the low yielding environment. BP5480-3f-Kn-4-1-KLT-2*B, Ciherang, and INPARI 32 HDB were specifically adapted in high yielding environment.
Evaluation of several soybean genotypes for pod shattering resistance
Authors: Krisnawati A , Adie M M , Baliadi Y
Published: June 2020

Shattering in soybean occurs after the pods reached maturity which can cause considerable yield loss. The aims of this study were to evaluate the pod shattering resistance and the performance of the agronomic traits of several soybean genotypes. The field study was conducted at Banyuwangi (Indonesia) from July to October 2018 using twelve soybean genotypes. Pod-shattering evaluation was done as per oven-dry and sun-drying methods. The variability of shattering start to occur at oven temperature treatment of 50°C and 60°C. Based on the oven-dry method, two genotypes were found resistant, three genotypes were susceptible, and seven genotypes were highly susceptible to pod shattering. Based on the sun-drying method (15 days drying), two genotypes were categorized as resistant, three genotypes were moderate, five genotypes were susceptible, and two genotypes were highly susceptible. Soybean genotypes ATgt-18-009 and Anjasmoro showed consistently resistant to pod shattering based on the oven-dry as well as sun-drying methods. Those genotypes also produce high yield (more than 3.0 t/ha) with days to maturity ranging from 82 to 85 days, therefore it could be potentially developed in the soybean production centers in Indonesia.
In vitro polyploidy induction of foxtail millet (Setaria italica (L) beauv) cv. buru hotong using colchicine treatment
Authors: Rodiansah Asep , Ika Puspita Melisa , Iriawati
Published: June 2020

In vitro polyploidy induction of foxtail millet (Setaria Italica (L.) Beauv) was done using callus from the basal leaf of 10-day old seedlings. Callus was treated using three different concentrations of colchicine (0, 125, 250 and 500 ppm) and two exposure times (24 and 48 hours). Results showed that colchicine declines the survival rate and the number of shots on all combinations. Putative polyploidy plant was produced on the combination of K3T1 (500 ppm colchicine; 24 hour exposure time). Based on field experiment data, putative polyploid plant has smaller characteristics in the term of plant height, the number of tillers, and number of seed per panicle than the diploid plant. However, leaf width, panicle length and diameter, seed size, and weight of 100 seeds of putative polyploid plant bigger than the diploid plant.
The resistance of upland rice doubled haploid lines to blast diseases and brown planthopper
Authors: Kartina Nita , Purwoko Bambang Sapta , Dewi Iswari Saraswati , Wirnas Desta , Sugiyanta  , Nindita Anggi
Published: June 2020

The objective of this study was to determine the resistance of doubled haploid lines of upland rice to leaf blast race 033, 073, 133, 173 and brown planthopper biotype 1, 2 and 3. The experiments were conducted in the Muara greenhouse, Indonesia Center for Rice Research (ICRR), Bogor-West Java Province. All experiments were conducted in the span of October 2017 to April 2018. The materials used in the research were 14 upland rice doubled haploid lines, 2 check varieties namely Inpago 10 and Limboto. Testing the resistance of doubled haploid rice of upland rice to blast disease was coupled with differential varieties i.e Asahan as blast-resistant check variety and Kencana Bali as blast susceptible check variety, while to brown planthopper with differential varieties i.e TN1, Pelita, IR26, IR42, PTB 33 and Rathu Heenati. The experimental design was a randomized complete block design with three replications. Resistance study of doubled haploid lines to leaf blast showed that ST7 and Limboto were resistant to race 033 while ST4, ST7, ST9, ST10, ST12, and Limboto were resistant to race 073. Meanwhile, ST4, ST9, ST10, ST11, ST12, Limboto and Inpago 10 were resistant to race 173. Four doubled haploid lines were moderately resistant to race 133 i.e. ST6, ST12, ST4, and ST14. The highest disease intensity was found in race 133 (52.2%) followed by race 033 (35.9%), race 173 (30.4%) and the lowest in race 073 (28.1%). Based on IRRI method of evaluation, two doubled haploid lines of upland rice i.e. ST1 and ST3 were moderately resistant to the biotypes of brown planthopper.
Evaluation of growth and production of wheat lines (Triticum aestivum L.) adaptive to lowland
Authors: Nur A , Sari A T I , Amin A R , Rafiuddin
Published: June 2020

Wheat is the world’s main food commodity originating from temperate (subtropical) regions. In Indonesia, wheat imports have been increased very high every year. To increase the use of local wheat consumption, especially low gluten needs to be developed. So far, wheat development in Indonesia has been carried out at plateaus> 1000 masl. Development at this height is experiencing competition with horticultural commodities with higher economic value and limited land. The development of wheat in Indonesia in the future is directed at medium - low altitude. This study aims to determine the wheat strain crossbreed of Magic Population adaptive lowland and high production. The study was conducted at the Green House of the Indonesia Cereal Research Institute, Lau Subdistrict, Alleopolea Village, Maros Regency with an average temperature of 25oC in the morning and 32oC in the afternoon. The study took place from October 2017 to February 2018. The study used a Randomized Block Design with 10 lines of Magic Population crosses including MPF 124, MPF 159, MPF 192, MPF 169, MPF 137, MPF 195, MPF 119, MPF 145, MPF 156 and MPF 231 as well as four comparators, namely two national superior varieties (Selayar and Dewata) and two introduction lines (Oasis and HP. 1744) so that there are 14 lines. Each group was repeated 3 times. The results showed that the wheat strains of Magic Population that were adaptive to lowland land with high productivity were MPF 192 (1.80 ton ha−1), MPF 169 (1.66 tons ha−1), MPF 195 (1.54 tons ha−1), MPF 137 (1.44 tons ha−1), MPF 124 (1.42 tons ha−1) and MPF 159 (1.34 tons ha−1). Besides, the result showed that the number of productive tiller, the number of main panicle seeds, and numbers of tiller spike seed could be used as the selection character under lowland.
Total anthocyanin, flavonoid and phenolic content of pigmented rice landraces from South Sulawesi
Authors: Hanifa A P , Millner J P , Mc Gill C R M , Sjahril R
Published: June 2020

The precious traits in the coloured grains of red, deep purple, or black has attracted more attention due to its health benefits. These health benefits have been attributed in part to phytochemicals in the rice seed, including phenolic, flavonoid and anthocyanins which are known as source of antioxidants. This study was aimed to investigate the content of total phenolic, flavonoid and anthocyanin from seventeen pigmented rice collected from the upland regions of Toraja, Enrekang and from lowland of Jeneponto, South Sulawesi. The grains were dehusked using handheld rice husker (Kett TR130) then were grinded into fine powder before extraction. Flavonoids and anthocyanins were quantified by UV-Vis spectrophometry and total phenolic content was determined using Folin-Ciocalteu method. Results showed that black rice glutinous rice varieties from lowland(Le ’leng)had the highest content of total anthocyanins, flavonoids and phenolics.
Statistical test for interaction of G x E on QPM grain yellow for hybrid candidate under lowland in Indonesia
Authors: Jamaluddin  , Isnaini Muzdalifah , Faesal  , Yasin HG M
Published: June 2020

The use of the statistical test has been demonstrated to assess the interaction of single crosses QPM maize genotypes (G) under five different environments (E). The statistical pooled model used in this study i.e. yi= μ+τ+α+ε and (2) yij=μ+τ/Λ+α+(αxΛ)+ε, (effect of mean, replication within the location, entry, interaction gxe, error). The parental material was introduced from CIMMYT Maize Lines (CML) and the yellow grain tester was modified by MR14x CML164 backcrosses programs until BC3F3. The testing environment (ei, i=1,2,3, 4,5) were lowland zone in (e1) Maros experimental Farm, (e2) Bajeng, (e3) Bontobili, (e4) Sidondo and (e5) Polman farmers field. Experiments were conducted by a randomized complete block design with three replications. The first variables were analyzed separately in each ei (i:1,2,3,4,5) and followed by pooled analysis by gj (j:1,2,3, . . . , 10). There were ten variables observed, the grain yield was observed in water content (wc) of 15%. The spacing used was 75x20cm one plant per space, the fertilizer applied were urea-ponska (200-150 kg/ha), weeding and irrigated was regularly conducted for maximum plant growth. The experiments were conducted on the rainy season in 2018. The statistical test showed that there is a significant difference of genotypes under five environments, interaction gxe, and cv: 10.69%, test by LSD (least significant difference) found that two candidates single cross (1)CML161-2-1-4-2xMR14Q and (2)CML165-3-1-2-4xMR14Q were high yielded and significantly different with two check variety MSQ.C0xMR14Q and Bima 13Q. These two single crosses could be promising as new QPM hybrids with yield potential 9.0-10.0 t/ha. The ear position is on the middle of the plant, shelling 75.2-77.8%, flowering 55 days and plant aspect scored one. QPM (Quality Protein Maize/Maize) is defined as speciality maize which has a high content of lysine and tryptophan. These are two essential amino acids that have important nutritional values for the human body to anticipate the disease among children and could be supplemented for human diets.
Salinity tolerance level of rice mutants (M3) derived from Ciherang and Inpari 13 varieties at seedling phase
Authors: Yunita R , Dewi I S , Lestari E G , Mariska I , Purnamaningsih R , Mastur
Published: June 2020

Salinity negatively affects rice production, therefore tolerant varieties are required to plant in an area with high salinity salinity. This especially will inhibit growth and trigger death at the seedling phase. The objective of this research is to obtain salinity tolerant rice mutants, from previously developed line by gamma ray irradiation and in-vitro selection, through a hydroponictesting in a green house. Plant materials used were third generation (M3) of rice mutants derived from Ciherang and Inpari 13 (each 45 lines), Ciherang and Inpari 13 as control parents, and Pokkali and IR20 as tolerant and sensitive salinity control, respectively. The experiment was conducted using methods developed by IRRI. This study was arranged in a completely randomized factorial design. The firstfactorwas twoconcentrationofNaCl (0 and 150 mM) and the second factor was the plant Rice varieties. The result of the study revealed that tolerant lines had higher plant height and root length than susceptible lines. This research yielded 64 rice mutants lines tolerant to salinity, i.e. 23 mutant lines of Ciherang and 45 mutant lines of Inpari 13.
Development of a paddy drought hazard forecasting system to cope with the impact of climate change
Authors: Surmaini E , Ramadhani F , Syahputra MR , Dewi ER , Apriyana Y
Published: June 2020

The relevance of climate extreme events, such as droughts, is well recognized as one of the impacts of climate change. The serious paddy droughts that occur during El Niño climate cycles has increased political awareness of the need to incorporate these in drought-forecasting and warning systems for effective drought management. In this study, we develop a paddy drought hazard forecasting system (PDFS) based on a web-based geographic information system (GIS). The Drought Hazard Index (DHI) was used to derive a deterministic forecast model, which is a simplified version of the probabilistic forecast model used in the previous version of this system. Based on the DHI, rice field areas in Indonesia were classified into four categories: low (1.0< DHI< 3.3), moderate (3.33 < DHI<6.66), high (6.66 <DHI< 10.9), and very high (10.9 < DHI< 16.0). Web-based PDFS is incorporated in the Integrated Cropping Calendar Information System (ICCIS). Predictions are available for the subsequent four months and are regularly updated every two months. The forecasts are made available for the regional areas of Indonesia at the provincial and district level.
Isolation and identification of nitrogen-fixing bacteria in the corn rhizosphere (Zea mays l.) originating from Jeneponto Regency, South Sulawesi
Authors: Arsita Rajidah , Karim Hilda , Hala Yusminah , Iriany Neni , Jumadi Oslan
Published: June 2020

This study aims to determine the type of isolates and the characteristics of nitrogen-fixing bacteria in the rhizosphere of corn (Zea mays L.) from Jeneponto regency, South Sulawesi. This research is an explorative study consisting of nitrogen-fixing bacteria isolation and identification using nitrogen free bromohymol blue (Nfb) medium, and an ammonium excretion test on nitrogen-fixing bacteria using spectrophotometry methods. Bacteria identification methods include Gram staining, and physiological and biochemical characterization which consist of temperature resistance at 5°C, 25°C, and 40°C, pH resistance at 4, 6, and 8 and salt tolerance at 1%, 6% and 10 %. The study has found 20 bacterial isolates that can be characterized as round, mucoid, non-mucoid, white, clear, Gram-negative and bacilli. Physiological characteristics (biochemical tests) have shown growing pellicles and discoloration in the liquid Nfb medium. The ammonium excretion test showed there are 5 isolates excreting fairly high ammonium levels, namely BKr1, BKr2, BKr3, TKN2 and BBTg1, with concentrations of 42.3, 39.1, 41.5, 41.0 and 39.4 μत, respectively.
The response of Inpago 8 rice to the provision of compost and Biochar in dryland
Authors: Ernawati Rr , Meidaliyantisyah  , Barus J
Published: June 2020

Compost and biochar are organic materials that can improve the function of soil as a growing medium in cultivation. Inpago 8 is a kind of upland rice which is grown in the dry land. This study was conducted to determine the effects of compost and biochar on dryland to the growth and yield of Inpago 8 rice plant. The experiment was conducted on dry land in Natar Experimental Station, South Lampung from January 2015 until May 2015. Six treatments were tested in this study consisted above: (A) control (without compost and biochar), (B) biochar rice husk 5 ton/ha (t/ha), (C) biochar rice husk 10 t/ha, (D) compost 5 t/ha, (E) biochar rice husk 5 t/ha + Compost 5t/ha, and (F) Biochar rice husk 10 t/ha + compost 5t/ha, using a randomized block design with four replications. Observations were conducted on the components of growth and yield of Inpago 8 rice plant, data analysis used Duncan‘s test. The result showed that the best appearance of the growth and yield of Inpago 8 rice plant is the application of biochar rice husk 5 t/ha + compost 5t/ha.
Growth and productivity of several hybrid maize varieties on alluvial soil of Madura in dry season
Authors: Sihombing Donald , Tafakresnanto Chendy , Handayati Wahyu
Published: June 2020

Although the productivity is very low, maize cultivation on Madura island still uses the local varieties. Considering this situation a field assessment was carried out in Larangan Slampar Village Tlanakan District Pamekasan Regency from May to August 2017. The study was aimed to determine the performance of several national hybrid maize varieties that especially released by the Indonesian Agency for Agricultural Research and Development (IAARD). The experiment was arranged in a randomized completely block design with three replications. The treatments were five superior varieties of the IAARD namely Bima 9, Bima 14, Bima 16, Bima 20, and HJ 21, and one local variety of Madura as a control. The result showed that new varieties tested especially Bima 9 and Bima 14 gave the best performance and significantly different to local variety in some agronomic parameters namely plant height, width and length of leaves and yield. Almost of all agronomic parameters had a positive correlation to the yield. The yield was increased up to 483.87% and the benefit up to 555,67 % than local variety. Based on this research and by the choosing of local farmers, both varieties were recommended as a specific location varieties in dry season planting time.
The adaptation test of hybrid maize (Zea mays L.) varieties on ex-coal mined land in Kutai Kartanegara
Authors: Hidayanto Muhamad , Yossita F
Published: June 2020

New Superior Varieties are one component of technology to increase the productivity of food crops. Ex-Coal Mined Land is marginal land, and can be used for agriculture by applying location-specific technology. The purpose of this study was to determine the performance and productivity of hybrid corn: Bima-20, Bisi-2, NK-22 and Nasa-29 on ex-coal mining land. The study was conducted on the ex-coal mined land in Kutai Kartanegera Regency, East Kalimantan Province from April to July 2018. The technology applied was through Integrated Crops Land Management (ICLM) and was designed in the form of 4 replications randomized block design (RBD) consisting of 4 hybrid corn varieties treatment, namely Bima-20, Bisi-2, NK-22 and Nasa-29. Data collected includes plant growth and yield components. The results showed that maize Bima-20, Bisi-2, NK-22 and Nasa-29 were able to adapt on the ex-coal mined land, although it was not yet in accordance with the potential yield. Productivity of each variety (dry shelled): Bima-20 = 6.8 t ha−1, Bisi-2 = 7.2 t ha−1, and NK-22 = 7.1 t ha−1 and Nasa-29 = 7.9 t ha−1.
Local resource utilization in integrated pest management in Lampung Province
Authors: Wardani Nila , Pujiharti dan Yulia
Published: June 2020

The integration of rice and cow is one way to optimize the use of existing resources in farmers. This integration is mainly for farmers who have relatively narrow land (0.1 - 0.5 ha). In the bioindustry concept, the rice-cow farming system is primarily aimed at obtaining an ecological balance in one ecosystem because the agricultural system which does not take into account the principles of ecological balance is part of efforts to destroy natural resources and the environment. This paper will discuss the use of available resources in the location to integrated pest control (IPM) in the farming system of rice-cow in Lampung Province. These local resources can come from plants, microorganisms, animals etc. which together and integrated contribute to the application of IPM in rice cultivation. At paddy, Corine bacterium is often used to reduce infections from fungi and bacteria as in blas disease caused by Pyricularia sp. The use of local resources such as coryne bacterium frequency of 15 days can reduce blast disease approximately 45.82%, and crackle disease around 50.2%. The use of a combination of local resources such as corin, refugia and vegetable pesticides will be better able to suppress both pests and diseases on rice. The use of local resources will support the work of natural enemies on rice, and contributes to a sustainable agricultural system.
Performance of maize growth and yields of jajar legowo planting system at levels of P and K fertilization based PUTK in South Sulawesi
Authors: Herniwati  , Ruchjaniningsih  , Tandisau Peter
Published: June 2020

Maize (Zea mays) is a second main crop after rice. Manipulation of cultural practices of maize by regulation of plant population and establisment of ferlizer requirement could increase production and‘farmer income. So, to reach that, it needs innovation of technology, i.e. technology of plant population setting via legowo system and technology of fertilization. Innovation of technology can only be reached by assessment The objective of the assement was to produce inovation of technology on plant population setting via legowo system and technology fertilization on mayze. The activity will be conducted on farm field, colaboration with farmer, field extentionist, and technician. The reseach was designed based on factorial design in RBD consisting of 2 factors. The first factor was planting method with two treatments and the’ second factor was fertilization based on nutrient status of soil with five treatments of based PUTK (The Dry Soil Test Kit), in three replications. Interaction between legowo planting method (100-40) with population of 71 428 plant/ha x20 cm tan / ha with fertilization based PUTK 75% (75kg SP36 ha−1 + 75 kg KCl ha−1) with Urea fertilizer 400 kg / ha could increase productivity by 36.4% with a value of B / C 2.93 and MBCR 6.31. It showed that the technology was economically feasible to be recommended, adopted and used in Gowa district, South Sulawesi.
Determination of potassium fertilizer requirement of maize hybrid with high K availability in the soil
Authors: Herawati  , Syafruddin
Published: June 2020

Fertilization of K is to be required to increase the productivity of maize besides fertilization of N and P. Therefore, it must be given potassium with the right dosage to fill up the requirement of potassium for maize. This objective of this study was to determine the requirement of K fertilizer of maize hybrid at high K availability in the soil. This research was conducted at the Experimental Farm of Bontobili, Gowa from February - June 2017. This research was arranged in a split-plot design with three replication. The main plot was varieties of hybrid maize i.e. Nasa-29, Bima-4, and Bima-20. The subplots were the dose of potassium fertilizer that consisted of 0, 20, 40, 60, 80, and 100 kg K2O ha−1. The results of this research showed that optimal K fertilizer for better plant growth and yield attribute was found 20-100 kg K2O ha−1. Recommendation of K fertilizer depending on yield attainable. If attainable yield > 11 t/ha, recommended K fertilizer was 55 - 66 kg K2O ha−1. a, but if attainable yield <10 t/ha it was not needed K fertilizer. We suggested to preventing a decrease in the availability of potassium nutrients in the soil, prevented decreasing productivity, and to kept sustainability productivity was requires maintenance of K fertilizer.