bluuebunny/crossref_metadata_2025_split huggingface dataset:
Yield and photosynthetic rate of wheat under continuously high temperature
Authors: Zubaidi A , Anugrahwati D R , McDonald G K , Gill G 
Published: February 2021

Abstract
In tropical regions high temperature occurs throughout wheat growth cycle and is a major factor influencing growth and yield in this area. The aim of this work is to describe the responses to continuously-high temperatures on growth, photosynthesis and yield of wheat, under controlled conditions. Nias and Dewata (Indonesian wheat varieties) and Axe and Gladius (Australian varieties) were tested in growth room experiment with temperature and photoperiod chosen to simulate conditions on Lombok Island, at lowland (32/23°C) and highland (28/20°C) sites. The third temperature (25/15°C) was selected to represent temperature in a more temperate wheat-producing area. High temperature reduced yield and dry matter accumulation which was associated with a reduction in photosynthetic rate and stomata conductance and an increase in respiration rate. The reduction in photosynthetic rate at high temperature was not only due to lower stomatal conductance but also non-stomatal effects as mesophyll conductance and quantum yield were lower. Genetic variability in response to heat stress was evident with the Indonesian varieties being more tolerant to high temperatures than Australian varieties. Nias and Dewata produced higher yield and biomass and maintaining higher rates of photosynthesis. Maintaining high photosynthetic rate and high stomata conductance, are important characters in adapting wheat into tropical environment such as Lombok Island.
Sustainability analysis for rice and duck farming in swampy land, Hulu Sungai Utara Regency, South Kalimantan
Authors: Rohaeni E S , Mailena L , Lesmayati S , Ermuna S S 
Published: February 2021

AbstractIn Hulu Sungai Utara Regency, the increasing of the potential of swampy land utilization through rice and duck farming needs to be developed towards the sustainable agriculture. This study aims to analyze the sustainability index of rice farming and duck poultry using the Sustainability Index approach of Lebak in Sungai Durait Hulu Village, Regency of Hulu Sungai Utara. Measurement of sustainability index includes six dimensions namely environment, economy, human resources, social, technology and institutions. The results showed that the sustainability index of rice and duck farming was about 47.54%, indicating rice and duck farming was less sustainable. The highest value of sustainability index was the social dimension, while other dimensions were included in the less sustainable category. The dimensions that has less sustainable need to be improved that could be focused on the leverage attributes which are land fertility and livestock raising system in ecological dimension, availability of livestock and product market and marketing of livestock product in economic dimension, ability to manage farming in the family and availability of family human resource in human resource dimension, agricultural waste treatment technology and feed supplement for livestock in technology dimension as well as the institution of output in institutional dimension.
Growth and yield improvement of maize by ACC deaminase producing bacteria under dry soil conditions
Authors: Husen E , Salma S , Husnain  , Sutardi  
Published: February 2021

Abstract
The beneficial effects of plant-microbe interactions have been widely studied. This study aimed to examine the ability of ACC deaminase producing bacteria to improve maize plant growth and yield under dry soil conditions. The study consisted of laboratory analyses, a greenhouse trial, and field experiments. Eight strains of Pseudomonas and Bacillus from previous studies were formulated into four groups of bacterial consortia (PC1, PC2, PC3, and PC4) in peat-based carriers. The bacteria were evaluated for their ability to grow in osmotic stress conditions using Polyethylene Glycol. Greenhouse experiment tested the consortia to improve maize growth in soil with 50, 75, and 100% water-filled pore space (WFPS). A field experiment was conducted in a farmer’s field using bacterial consortia in combination with organic fertilizer. The results showed that most bacterial strains were able to grow in osmotic stress conditions up to -2.0 MPa. Under different WFPS levels, the four consortia tested appeared to prevent maize from further stress of water shortages, although not significantly different from the uninoculated. The highest increase of maize yield under field soil condition was shown by plants inoculated with PC3 consortium. Therefore, the PC3 consortium needs further evaluation as a promising biofertilizer for dry soil conditions.
Application of liquid organic and inorganic fertilizer on growth and production of hybrid maize
Authors: Maintang  , Sudding Faisal , Asri Muh , Rauf Abdul Wahid 
Published: February 2021

Abstract
Organic fertilizers can be an alternative source of plant nutrients. The aim of experiment is to determine the effect of liquid organic and inorganic fertilizer application on hybrid mayze growth and yield. The experiment was conducted at Soppeng regency, South Sulawesi from September to December 2019. The experiment was set in Randomized Block Design with eight level of treatments and three replications. Treatments were (P1) control, (P2) inorganic fertilizer 100% recommendation, (P3) inorganic fertilizer 75% recommendation; (P4) liquid organic fertilizer 5 ml 2 L−1 water + P3; (P5) liquid organic fertilizer 10 ml 2 L−1 water + P3; (P6) liquid organic fertilizer 15 ml 2 L−1 water + P3; (P7) liquid organic fertilizer 20 ml 2 L−1 water + P3; and (P8) liquid organic fertilizer 10 ml 2 L−1 water + P2. Combinations of liquid organic plus inorganic fertilizer produce better growth and higher production than only inorganic fertilization and control. The combination of liquid organic and inorganic fertilizer 75% recommendation (15 ml 2 L−1 water + NPK Phonska 300 kg ha−1 + Urea 150 kg ha−1 show better agronomic performance and yield components with grain yiled 8.2 t ha−1 higher than other treatments. This dosage could be used for optimum maize production.
Improving irrigated agriculture through integrated water resources management in Pusur Watershed, Central Java
Authors: Hamdani A , Kartiwa B , Sosiawan H 
Published: February 2021

Abstract
Pusur watershed supplies water for about 3,000 ha irrigated farmlands of 12,000 smallholders. However, water shortages affecting the crop development and production are common in the farmlands within the Pusur Watershed, especially during the 3rd cropping season (June-October). This research conducted a survey to describe water resources availability, hydraulic network performance, cropping calendar, canal water access, and crop development condition with objectives to improve water management and reduce water conflict in the irrigated region. The participatory and rapid appraisal results identified different condition of canal water access and crop development within the sampling area. The result found that the pusur watershed is very elongated shape and the largest area was covered by 44.24 % of rice. Water availability of all dams in Pusur Watershed are decreasing from rainy season to dry season about 8 until 19% in every year. Many farmers has a good access in hydroulic structure condition and water distribution efficiency, but most of them has canal water lack for crop during the 3rd cropping. An analysis of water balance simulation showed a degraded conditions of crop development most located in downstream areas whereas crops look growing-up normally in most of upstream zones.
Improving rice plant using Si materials on P and Si uptake, growth and production in Ultisols
Authors: Anggria L , Siregar A F , Sipahutar I A , Rostaman T , Suntari R , Fitriani U , Husnain  
Published: February 2021

Abstract
Silica plays a role on nutrient uptake as increasing soil available P and increasing plant resistance on abiotic and biotic stresses. The purpose of this research was to find out the effect of silica material application on P, Si uptake, rice growth and production. A pot experiment was carried out under greenhouse condition. The experiment was set up in completely randomized design with six treatments and four replications. The treatments used five silica materials, including palm nutshell compost, volcanic ash, palm nut shell ash, coal fly ash, and waste media of mushroom. Urea (200 kg ha−1), SP-36 (75 kg ha−1) and KCl (50 kg ha−1) were applied as basal fertilizer. The results showed that the application of silica material had a significant effect on P and Si uptake in rice plants. The highest of P uptake was in the palm nut shell compost treatment compared to the control. Meanwhile, the highest Si uptake was in coal fly ash treatment compared to the control. Silica applications could increase the growth and yield of rice. The highest yield for the 1,000 grain weight and the straw yield were obtained in the palm nut shell compost and coal fly ash treatments compared to the control.
Effectiveness of biofertilizer formula on soil chemical properties and shallot productivity in tidal swamp land
Authors: Mukhlis  , Lestari Y , Yufdy M P , Razie F 
Published: February 2021

Abstract
Low productivity is one of the main problems to increase shallot productivity in tidal swamp lands. Biofertilizer is an alternative to increase soil fertility, plant productivity, inorganic fertilizer efficiency, and decrease environmental pollution. The aim of this research was to test the biofertilizer formula containing decomposer (Trichoderma sp), P-solubilizer (Bacillus sp), and N-fixer (Azospirillium sp and Azotobacter sp) to increase soil chemical properties and shallot productivity in tidal swamp lands. This research was conducted from July – September 2018 in Wanaraya District, Barito Kuala Regency, South Kalimantan. The treatments involved (A) No fertilizer, (B) NPK (recommendation dose), (C) Biofertilizer, (D) Biofertilizer + NPK (50% of recommended dose), (E) Biofertilizer + NPK (75% of recommended dose). The treatment was arranged by randomized completely block design with four replications. Recommended dose of NPK fertilizer was NPK compound 500 kg ha−1, SP-36 150 kg ha−1, dan KCl 200 kg ha−1. Research results showed that biofertilizer formula combined by inorganic NPK fertilizer as much as 50 to 75 % of recommended dose could increase soil chemical properties and yielded as much as 2.39 to 6.19% compared to NPK fertilizer with recommended dose. For further development, this biofertilizer need to be tested at several locations with broader plot size.
The projected water availability on paddy rice based on climate change scenario in Indonesia
Authors: Misnawati  , Apriyana Y , Ramadhani F 
Published: February 2021

Abstract
Climate change is a crucial issue concern in this century. The increase in temperature and changes in rainfall has a substantial effect on the agricultural sector. This study investigates the impact of climate change on water availability and crop evapotranspiration (ETc) in seven locations. The historical data (1981-2005) and The GCM data (ACCESS1-0) for the CMIP5 project for 45 years (2006-2050) under RCP 4.5 and RCP 8.5 scenarios were used to analyze the trend of temperature, rainfall, crop evapotranspiration, and changes in water availability using The Mann-Kendall test. In this study, crop evapotranspiration is calculated to assess monthly crop water requirement, while deficit rainfall is using to calculate the water deficit on paddy rice. This study shows that the temperature and crop evapotranspiration have a significant positive trend under historical, RCP 4.5, and RCP 8.5 scenarios. Otherwise, rainfall shows a relatively decreasing trend for historical RCP 4.5 and RCP 8.5 scenarios. Crop water requirement is projected to increase in the future. Rainwater would insufficient to crop water requirements in a certain month. Shifting the planting time and adjusting the cropping pattern is a strategy to adapt and mitigate climate change.
Factors affecting rice yield productivity in tidal swamp of South Sumatra
Authors: Girsang S S , Raharjo B 
Published: February 2021

AbstractAgricultural land expansion in tidal swamp rice (Oryza sativa L.) has not been optimally utilized. The objective of the study was to examine the relationship between soil, climate, and other factors that affect rice productivity. The study was conducted in Muara Telang Sub-district and used the purposive sampling method from 30 respondent farmers. The results showed that rice production was lower in the dry season (DS) than wet season (WS) (r2=0.96) which was closely related to water availability. A low percentage of total pore space (TPS) and availability of P2O5have an impact on rice yield in WS while rice yields at DS 2019 are directly related to N applications. Low temperatures have a positive impact on the presence ofCnaphalocrocis medinalisandGryllotalpa brachypterabut high humidity has a major impact on the presence ofRattus argentiventerandBacterial leaf blight. On the other hand, the income received by farmers is doubled in WS compared to DS (R/C ratio 2.4 Vs. 1.2). Nutrient management, soil pore space, and climate information can affect rice productivity in tidal swamp rice fields that are economically beneficial in WS, however further research is needed for DS condition.
The role of peat decomposition stage on iron solubility and distribution in tidal swamps
Authors: Fahmi A , Susilawati A , Sarwani M 
Published: February 2021

Abstract
Most peat layers laying above sulfidic materials have important role in the geochemical cycle in tidal swampland. Depletion of the peat layer increase metal solubility and acidity from sulfidic materials which then potentially polluting and decreasing the quality of the surrounding environment. The purpose of this review was to describe the influence of peat layer thickness and its decomposition stage on iron solubility and distribution in the profile of peat soils and acid sulphate soils located around peatlands. This paper used observational data from a number of articles on peatlands with varies thickness and acid sulphate soils. Peat decomposition stage has important role on the distribution of Fe, the movement and ability of complex formation with Fe. Most of the Fe ions in peatlands were in organic complex form, and organic–Fe concentration in sapric peat layer was higher than hemic peat layer.
Direct application of reactive phosphate rock on improving maize yield in tidal swampland
Authors: Siregar A F , Husnain  , Suastika I W , Ratmini N P S , Sipahutar I A , Nassir A 
Published: February 2021

Abstract
Tidal swampland soil is characterized by low soil acidity and P availability, and high Al, Fe, S, and Na concentrations. Due to its productivity, tidal swampland needs an improved specific location technology. Reactive phosphate rock (RPR) which is characterized by its high reactivity and residual effect, and slow release is an option to overcome the P problem. The objective of this research was to study the effect of direct application of reactive phosphate rock in increasing maize yield in tidal swampland. The experiment was conducted at farmer’s field in Banyu Urip Village, Banyuasin District, South Sumatera. The research was arranged using randomized block design with four treatments and four replicates. The treatments consisted of farmers’ practice (P1), recommended single fertilizer (P2), recommended compound fertilizer (P3), and recommended RPR package (P4). The results showed that P4 treatment was able to improve plant growth and maize yield up to 25% compared to farmers’ practice. RPR package consists of RPR, dolomite, manure, Urea, and KCl of 1, 1, 2, 0.4, and 0.4 t ha−1, respectively, in tidal swamp land achieved maize production up to 8.25 t ha−1. This RPR package could be an applicable option in improving maize yield in tidal swamp land.
Improving rice growth and yield with silicon addition in Oxisols
Authors: Siregar A F , Sipahutar I A , Anggria L , Husnain  , Yufdi M P 
Published: February 2021

Abstract
The addition of beneficial nutrients as silicon (Si) has become a concern in rice cultivation in some countries. However, it is not fully adopted in Indonesia. It is known that Si plays an important role on improving plant resistance on biotic and abiotic stresses. A pot experiment was conducted to study the response of rice plant growth on Si addition in Oxisols. A completely randomized design was set with eight treatments as varying Si rates (0, 100, 200, 300, 400, 500, 600 and 700 kg SiO2 ha−1) and three replications. Some variables were observed as plant height, number of tillers, stem strength, lodging resistance, biomass and yield components. Related to stem strength and lodging resistance, the observation was conducted prior to harvest. The results showed that initial soil Si available was 264 mg SiO2 kg−1 and categorized below the critical level. Si application showed significant effect on increasing number of tillers, stem strength, lodging resistance and the yield which occurred at 700 kg SiO2 ha−1 treatments. The rice yield increase by 34.66% at 700 kg SiO2 ha−1 treatments compared to control. This current result showed that addition of Si fertilizer has showed the effect on improving rice growth and yield in Oxisols.
Smart agriculture practice for intensively rice cultivation in both irrigated and rainfed rice field
Authors: Kartikawati R , Yunianti I F , Paputri D M W , Wihardjaka A 
Published: February 2021

Abstract
A smart agricultural practice called Panca Kelola Ramli has been developing by the Indonesian Agricultural Environment Research Institute (IAERI). The smart practise was applied in intensively rice cultivation both in irrigated and rainfed rice field in Pati District, Central Java Province, Indonesia. The objective of the study was to identify plant performing and rice productivity both in irrigated and rainfed rice field. Five components of Panca Kelola Ramli consisted of high yielding rice varieties, Urea coated by biochar (UBICHAR), biochar-compost, integrated pest and disease management and also water management. In the rainfed rice field, the Panca kelola ramli was applied and modified to four treatments consisted of biochar - compost + UBICHAR, compost + UBICHAR, biochar - compost + Urea and compost + Urea. The observation was carried on methane emission, plant growth and rice yield. The study showed that methane emission, number of tillering, plant height and rice yield in irrigated rice fields were 172.13 kg ha−1, 14 tillers, 94.75 cm and 6.0 t ha−1, respectively. While in the rainfed rice field, the plant parameters vary among the treatments. The highest rice grain was produced by the treatment of compost + UBICHAR which was supported by the highest root weight. The Panca Kelola Ramli in irrigated rice field could reduce Urea and chemical pesticide use.
A method for production of pure silica as fertilizer from industrial waste material
Authors: Anggria L , Husnain  , Masunaga T 
Published: February 2021

Abstract
Globally, industrial waste such as fly ash, bottom ash, and slag in the thermal power energy, steel, and coal industry has been known as potential soil ameliorant and silica fertilizer. However, the use of those materials as ameliorant or Si fertilizer should consider negative environmental impact. Therefore, to use that material in Indonesia need to deal with the regulation and to prove its positive effect on the soil and plant. One innovative idea for recycling industrial waste is to use those raw materials to produce high purity Si as fertilizer. The objective of this research was to improve the solubility of Si from industrial waste material using a sol-gel technique. High purity of Si from materials was prepared using an acid and base solution. Two kinds of materials were selected to produce high purity Si, namely: bottom ash and fly ash. Silicon concentration of material before and after treatments were extracted by using two extraction method, namely: Na2CO3/NH4NO3 and 0.5 M HCl. The results show that the Si concentration of materials was higher with the sol-gel technique compared to Si concentration before treatment. In summary, this study provides an effective method to produce available Si from waste material.
Research on customer satisfaction of lanzhou nongjiale based on SEM
Authors: Jixuan Yan , Sun Dongyuan , qiao Hong qiang 
Published: February 2021

Abstract
The farmhouse is a kind of entertainment form for city residents to alleviate pressure on seeking, the customer satisfaction is helpful to enhance Agritainment service consciousness. In this paper, through the design of scale and field research, the evaluation system of agritainment customer satisfaction (RTCS) is constructed to study the customer satisfaction of agritainment and its influencing factors. The research results show that: in the five latent variables influence the farmhouse of customer satisfaction, customer feedback perceived the greatest impact on the farmhouse satisfaction, followed by the customer perception and customer perception of service facilities. And customer feedback in perceptual “return”, “recommended rate, the customer perception” facilities in the “natural environment”, “architectural style”, “illegal status, customer perception of service” of “food taste”, “employee cleanliness” observed variables to the latent variables effect more obvious, is the impact of the main factor of Agritainment in customer satisfaction. On the basis of the conclusion, the paper puts forward the countermeasures and suggestions to improve the satisfaction degree of agritainment.
Research on Power Harmonic Noise Suppression Method Based on Genetic Algorithm for Urban TEM Data
Authors: Yishu Sun , Sihe Huang , Jian Chen , Yang Zhang 
Published: February 2021

Abstract
In recent years, ground accidents are constantly occurring in the process of urban underground space development. TEM provides effective technical support for the rational development and safe operation of urban underground space as a flexible and low-cost geophysical method. However, the interference of human electromagnetic noise is serious in the urban environment, especially the power frequency harmonic noise has wide frequency band distribution, as it is difficult to suppress it quickly and effectively, resulting in low accuracy of the extracted secondary field signal and large inversion error. Aiming at the problem of power frequency harmonic noise interference, this paper proposes a noise suppression method based on genetic algorithm. Through the optimization algorithm, the feature matching segment in the reference noise is quickly searched, and it is self-adaptive offset with the power frequency harmonic noise in the signal. The simulation results show that the method can obtain higher signal-to-noise ratio when collecting less sample data. Furthermore, it is proved that this method of this paper has the characteristics of fast noise suppression and no signal loss.
Research on radio imaging method (RIM) multifrequency information fusion methods
Authors: Ni Jianfu , Han Xue , Liu Sixin 
Published: February 2021

Abstract
Radio imaging method (RIM) also called cross-hole electromagnetic wave method, is widely used in mineral exploration, engineering exploration and other fields. The RIM system can collect multi-frequency information, but the use of multi-frequency information is still limited to qualitative analysis or only one type of frequency information is used. By summarizing the multi-frequency information utilization methods appearing in a variety of geophysical methods, and the feasibility of RIM multi-frequency utilization is proved through theoretical analysis, three multi-frequency information fusion methods suitable for RIM are proposed, namely multi-frequency inversion strategies, Multi-frequency data fusion and multi-frequency image fusion. An example application analysis shows that the three multi-frequency information fusion methods make full use of the advantages of different frequencies and can improve the imaging result.