bluuebunny/crossref_metadata_2025 huggingface dataset:
Shading and daylighting strategies in classrooms: a comparative study in the four climate zones in Greece using Daylight Factor values
Authors: Nikolaou G I , Meresi A K
Published: November 2021

The present work focuses to the efficient use of daylight in school buildings, which has been proved that is able to create a pleasant atmosphere, increase student productivity and comfort and also contribute to energy savings if combined with a daylight-responsive control system. The architectural-bioclimatic design contributes to the creation of technical solutions that provide daylight in existing classrooms, taking into account the climatic conditions and the needs of users. The purpose is to investigate the most prevalent shading and light redirection systems in a typical Greek classroom, in every climatic zone of Greece and come up with the most efficient ones. Research takes into consideration the distribution of daylight on working level and the total heating energy consumption throughout the school year, ensuring conditions of visual comfort. After evaluating and comparing the data, the outcome of this research demonstrates the most efficient shading system for each climatic zone, in order to achieve visual comfort and energy savings.
Light pollution and sports lighting in dense urban areas: Early results in a case study of a stadium
Authors: Ntoutsos G , Doulos L T , Zerefos S , Papalambrou A , Balafoutis T
Published: November 2021

The use of municipal football fields by a large number of citizens and amateur athletes on a daily basis during evenings is a popular activity. Usually, the aiming of the pitch lighting, without taking into account the dense urban environment in the surroundings, causes light pollution. Obtrusive lighting in most cases is the rule and not the exception. This situation could be justified in football fields of the professional football leagues so as to address the needs of television broadcasts of the matches for two days per month per field. However, in amateur activities due to the lack of rules and the initial incorrect lighting design, the problem of light pollution is deteriorated. The scope of this research is to identify the main issue and the repercussions of obtrusive lighting in the urban fabric, propose a quick method to quantify light pollution in sport fields using IDA-Criteria for Community-Friendly Outdoor Sports Lighting guidelines and to further set some parameters for a method using more calculating surfaces.
An overview of environmental impacts of lighting products at the end of life stage through life cycle impact assessment
Authors: Grigoropoulos C J , Doulos L T , Zerefos S C , Tsangrassoulis A
Published: November 2021

Life Cycle Impact Assessment (LCIA) of lighting products is a methodology that analyses and evaluates environmental impacts throughout their total life cycle, from the extraction and processing of raw materials, design, construction, transportation, distribution, use, recycling and re-use of materials, and last their final disposal. According to the results of a large number of LCIAs, lighting products have a substantial environmental impact in multiple areas, as for example in primary energy, toxicological effects, the effect on global warming, the level of environmental acidification, etc. All of those impacts could result in more efficient products by enhancing the product design process (using Ecodesign). At the initial design stage of lighting products, the manufacturer should also take into consideration circular economy aspects at the End of Life stage (EoL) such as repair, reuse, remanufacturing, retrofitting, recycling, and upcycling and not only the energy savings from the use stage or the selection of raw materials. The scope of this paper is to collect and present an overview of all environmental impacts of LCIA analyses focusing at EoL stage of lighting products. Those impacts could be used as data input into a future model that determines which lighting products are more environmentally friendly.
Life cycle assessment of bio-composite laminates. A comparative study
Authors: Gkoloni N , Kostopoulos V
Published: November 2021

The use of glass fiber reinforced plastics is steadily increasing in the aerospace industry for aircraft interiors. However, the glass fiber reinforced plastics, although provide a robust solution they have many issues concerning their environmental friendliness. An alternative environmentally friendly solution for aircraft interiors is the use of bio-composites. Bio-composites used in this kind of applications are made of natural fibers as reinforcement and the use of bio-resins as matrix material. In the present study a life-cycle assessment approach is applied to selected bio-composites scenario and the comparison were made against the currently used glass fiber reinforced plastics. Results show the use of flax fiber reinforced materials seems to have lower environmental impact.
Experimental study of the mechanical properties of burnt clay bricks incorporated with plastic and steel waste materials
Authors: Ebadi-Jamkhaneh M , Ahmadi M , Kontoni D-P N
Published: November 2021

Traditional masonry bricks are made of clay burnt under high temperatures, resulting in high energy consumption, environmental contaminations and decreased natural raw materials. In order to limit nature risks, inorganic materials have been used to make brick. Four types of materials, including fine and coarse plastic, cast iron, and iron swarf, have been used to make bricks. A total number of 64 specimens were made and tested. The tests results were presented in the form of compressive strength, rupture module, water absorption percentage, and initial water absorption ratio. The result showed that using cast iron powder caused the maximum compressive strength amongst all the samples, and was 46% larger than for the reference bricks. On the other hand, the maximum initial water absorption occurred within the first three hours, while the maximum rate was associated to samples with higher coarse plastic contents.
Proposals for an environmental and social just transition for the post-lignite era in Western Macedonia, Greece
Authors: Zervas Efthimios , Vatikiotis Leonidas , Gareiou Zoe
Published: November 2021

This text formulates a set of coherent and realistic proposals for the after delignification period in Western Macedonia. The aim of these proposals is to avoid the economic decline and poverty of the Region. The first part, based on the literature and the best available practices, the proposals for the necessary environmental restoration of mine lands. Concerning the economic rehabilitation of the Region, a mix of actions referring to the whole production chain: from the primary to the tertiary sector of the economy, is proposed. The action that is expected to enhance the production potential of this region is the creation of branded products, under a single brand name, which will voluntarily bring together, in the context of synergies, the agri-food and manufacturing activities. Overall, it is estimated that the deadline set for de-lignification in 2023, is too early to start all those activities that will allow the economic transition of the Region, and to exclude the possibility of a massive wave of migration. For this reason, the extension of de-lignification, for a period of time within the European objectives to achieve the target of climate neutrality in 2050, are proposed.
Forest roads planning and management in terms of Social-Ecological Systems (SES) framework
Authors: Kantartzis A , Arabatzis G , Christopoulou O , Sfougaris A , Sakellariou S , Malesios Ch , Tsiaras E , Samara F , Th Tampekis S
Published: November 2021

Adaptation to climate change as well as the increasing demand for a new approach in post fire socioecological resilience and Nature-Based Solutions (NBS) in forest management requires a different way of thinking of forest roads planning, in terms of Social-Ecological Systems (SES) Framework. Social-ecological systems are complex, adaptive and emphasize that social and ecological systems are linked through feedback mechanisms, and that both display resilience and complexity. In this frame, it is important to clarify the considerable dynamic elements for the future development of forest roads planning and management that promote natural, socio-economic, and cultural well-being. The main objective of this paper is to identify important new challenges concerning the forest roads planning and management and to propose a conceptual paradigm towards SES in a continuing changing climate, social needs and environmental conditions. Hence, a newly developed concept under the prism of SES forest roads planning, is presented. Eight key performance areas to ensure the forest operations as SES include: (i) nature’s services; (ii) ergonomics; (iii) environmental economics; (iv) quality optimization of products and production based on NBS; (v) the use as evacuation routes; (vi) access to renewable energy sources; (vii) people and society; and (viii) resilience. The conceptual frame of SES provides a close to nature perspective which addresses the ongoing and foreseeable challenges that the global forest ecosystems face, based on harmonized forest operations performance across economic, environmental and social sustainability. In this new concept, we demonstrate how these eight interconnected principles interact to each other and are related to forest operations achieving Nature Based Solutions in forest management and climate change mitigation.
Project risk management adaptation of infrastructures in the Greek context
Authors: Demertzis G , Vatalis K I
Published: November 2021

Last years in Greece there has been an increase in the number of “Small and Medium Enterprises, SMEs” active in the construction of infrastructures and specifically in the telecommunications sector. The research methodology was done with an appropriate questionnaire which is addressed mainly to construction companies. Large companies, for both operational and financial reasons, prefer to outsource projects and services related to their network infrastructure to third companies rather than using their own resources. SMEs undertake to implement many of these services. They are more flexible in terms of operation but also adapt faster to the requirements of the projects they undertake. However, unlike large companies, they lack in procedures and have limited administrative resources. This makes them more vulnerable to the risks presented in the various phases of the projects they undertake. Risk Management, as a process, includes the identification of risks, the prediction of the probability of occurrence and its consequences and finally proposes solutions to treat them. The research investigates the current situation regarding risk management by Greek SMEs. The results showed up that although the use of relevant risk management procedures is limited, the participants believe to the usefulness of the process according to international standards for the projects that SMEs implement.
The contribution of European structural and investment funds to the strategic planning of sustainable development in the national forest parks of Greece
Authors: Zikouli A , Andreopoulou Z , Tsitsoni T
Published: November 2021

Sustainable development represents a crucial environmental policy framework in order to provide multiple benefits for climate, biodiversity and people. The National Forest Parks (NFP) represent protected areas with important forest diversity that play a critical role, both in reversing biodiversity loss and contributing to socio-economic development. The European Structural and Investment Funds (ESIF) pursue the preservation and improvement of the environment in the context of sustainable development. To date in Greece, 16 operational projects have been approved through two ESIFs and concern six NFPs which are supervised by Management Bodies. Critical Assessment of the projects and SWOT analysis for the six Management Bodies has also been implemented. These results highlight the existence of common sustainability goals, which focus on the protection of Natura 2000 sites and on preserving biodiversity, to financial support the NFPs with vehicles and IT equipment, rather than promote sustainability.
A review of the good practices of active mobility measures implemented by European cities due to the COVID-19 pandemic
Authors: Nalmpantis Dimitrios , Vatavali Fereniki , Kehagia Fotini
Published: November 2021

The scope of this paper is to make a review of the good practices of active mobility measures implemented by big European cities to face the changing travel patterns and the social distancing requirement due to the COVID-19 pandemic. Active mobility good practices were gathered by 50 postgraduate students and they were categorized by the authors. 50 European cities were reported, of which four (4) were examined further as the most reported ones. These were the following: Paris, France; Milan, Italy; Brussels, Belgium; and Berlin, Germany. This does not mean that these cities are the best performing in active mobility, as there could be cities that already had adequate active mobility performance, and other factors interfere, such as the brand name of each city. The most reported good practice was the temporary pop-up bicycle lanes, also applied in Thessaloniki, Greece. Another good practice is the expansion of pedestrianization and the speed limit of 30 km/h. Athens, Thessaloniki, and other Greek cities have a lot to learn from the experience of the other European cities, and this paper is an attempt of knowledge transfer. It seems that the crisis of the COVID-19 pandemic has become an excellent opportunity for the promotion of active mobility in Europe that should not be left unexploited.
Photochemical treatment of an actual municipal wastewater by means of UV, potassium persulfate and iron
Authors: Kanafin Yerkanat N , Makhatova Ardak , Arkhangelsky Elizabeth , Poulopoulos Stavros G
Published: November 2021

The photochemical treatment of an actual municipal wastewater (MWW) from wastewater treatment plant (WWTP) in Kazakhstan has been studied in the present work. The MWW has been taken after mechanical treatment stage and characterized. The photochemical treatment included the use of the photo-Fenton-like process in the batch photoreactor with a UV irradiation at 254 nm for 120 min. Experiments have been done without adjusting the initial pH of wastewater, which was around 7.7. Potassium persulfate (K2S2O8) was activated by means of UV and ferric ions, which led to generation of highly oxidative sulfate and peroxymonosulfate radicals. The concentration of Fe2+ ions ranged from 20 to 100 ppm, while the concentration of K2S2O8 was in between 5 and 25 mmol/L. 83% removal of total organic carbon (TOC) was achieved after 120 min of treatment using 15 mmol/L K2S2O8 and 20 ppm Fe2+, while 75% removal of total carbon (TC) was observed at 15 mmol/L K2S2O8 and 100 ppm Fe2+. As the carboxylic acids are common organic intermediates after photochemical treatment, the presence of formate and acetate anions in effluents were further detected on the ion chromatography.
The morphological and physiological studies Gorontalo local upland rice treated with drought and shade stresses
Authors: Ahmad A , Sija P
Published: November 2021

Crop growth and production are strongly affected by abiotic and biotic stresses. Survival rate frequently been used to evaluate rice drought tolerance with a low survival rate of rice plants undergoing drought stress leading to low yields. The aim of this research was to obtain Gorontalo local upland rice variants that are tolerant against drought and shade stresses by considering the morphological and physiological characteristics. The research was conducted in Bulotada Barat Village, Sipatana District, Gorontalo, from January to August 2017. Employing the randomized block design with three replications, the research consisted of two treatment factors. The first factor is the accession, which consists of two tolerant accessions; two moderately tolerant accessions, two drought-sensitive accessions, and two shade-sensitive accessions. The second factor pertains to the drought and shade stresses which consist of drought + 25% shade stress, drought + 50% shade stress, and a control. Irrigation in the drought control specimen was given until inundation reached 1.5 cm. In a drought-stressed situation, irrigation was given when the groundwater reached -30 to -35.9 kPa. The Ponda Merah accessions were the accessions that were tolerant against drought and shade stresses. The morphological characteristics of Gorontalo local upland rice that showed tolerance against drought and shade stresses were longer roots (33.20 cm), heavier dry weight (38.82 gr), a thinner leaf (186,56 cm2.g-1), and a higher yield (4,90 gr.cluster−1). The physiological characteristic of the Gorontalo local upland rice that showed tolerance against drought and shade stresses was the sugar content (0,73 g.g-1) which was higher than the other treatment.
Identification of the genetic diversity of sweet potato germplasm based on quantitative morphological characters
Authors: Indriani Febria Cahya , Restuono Joko , Rahajeng Wiwit , Patriyawaty Nia Romania , Ashari Sumeru , Sundari Titik , Mejaya Made Jana
Published: November 2021

Sweet potato is one of the prospective food crops to be used as an export commodity. Information on genetic diversity of sweet potato is needed as a consideration for the improvement of superior sweet potato varieties that have export quality. The research was conducted in Wringin Songo village, Tumpang, Malang Regency. The materials used were 150 sweetpotato accessions in total that consisting of: 19 superior varieties, 38 local clones, 1 introduced variety and 92 promising clones. This experiment was arranged in randomized block design (RBD) with two replications. The qquantitative morphological variables such as: potential yield, tuber weight, dry matter, stover weight, harvest index and number of tubers plot−1were observed. The results showed that the genetic diversity was quite high in the sweet potato germplasm, there were 41 clones that had yield potential (≥ 30 t ha−1). Some of these clones were prospective to be used as parents for crossing due to their ability to flower. Two sweet potato clones (MSU 10001-18 and MSU 07030-64) with dark purple flesh colour, Kidal variety with yelow flesh color and above 30% tuber dry matter have the criteria required for export market.
Morphological characteristics and resistance to the pest of local corn variety of “Jago Leke” genetic resources in West Nusa Tenggara
Authors: Aisah Ai Rosah , Fitrahtunnisa  , Hipi Awaludin
Published: November 2021

Jago Leke is a local variety of sticky corn in the City of Bima which is very familiar and spread in the Province of NTB, especially on Sumbawa Island. This corn has a fluffier and sweet taste. However, at present its existence is in danger of being displaced by hybrid corn, which in recent years has been mass-cultivated in almost all areas on the island of Sumbawa. The purpose of this study was to determine the morphological characters and resistance to pests of sticky corn of the Jago Leke variety in an effort to preserve potential genetic resources. The method used in this research is observation and interviews. The results showed that the jago leke seed had an early maturity of 60 days, reddish stem color, shorter plant height than corn in general, small cobs, and red young cob hair. The main plant pest organisms that attack this jago leke plant are grasshoppers, stem borers, leaf blight, and leaf rust. Plant pest organism attack symptoms occur in both the vegetative and generative phases with different attack intensities.
Combining ability of S3 maize inbred lines and related contributing traits for high yield under high population density
Authors: Efendi Roy , Slamet Bambang P. , Arif Subechan M , Aqil M. , Azrai M.
Published: November 2021

The productivity of maize may be increased by using maize hybrid ideotype (erect leaves and small leaf angles) which is adaptive under high plant population density. The hybrids maize was desirable in increasing the plant density due to better light interception and space so that it can increase the yield per unit area. The aim of the research was to assess S3 lines that had good combining ability and to determine the traits associated with high yields under high plant population density (83.333 plants/ha). A total of 242 hybrids (F1) were examined from a crossed combination of 121 lines x 2 tester were evaluated with three commercial hybrid varieties such as Bisi 18, P 27, and P 36. The evaluation was carried under high plant population density (83,333 plants/ha) in the rainy season (November 2020 – February 2021). The research used an alpha lattice design with three replications. The results showed that the inbred lines had a greater effect on the yield character and yield components, while the leaf angle and leaf orientation effected by the tester. The lines that had good general combining ability for high yielding were M3B11P27T3-11-3-1, P27M3B11T3-1-4-2, P27M3B11T3-1-2-1, M3B11P27T3-8-4-1, P27M3B11T1-7-1-1, M3B11P27T1-1-1-3. The yield range of the hybrids were 8.43-9.90 t/ha, significantly higher than Bisi 18, P 27, P 36 varieties were 7.13 t/ha. Traits such as small leaf angle, erect leaf, root and stem lodging resistance, stem diameter, leaf length, ear diameter, and kernel row number were significantly correlated with high yield under high plant population density.
Morphological characteristics of Madiun 1, the First Porang (Amorphophallus muelleri Blume) released cultivar in Indonesia
Authors: Nugrahaeni Novita , Hapsari Ratri Tri , Trustinah  , Indriani Febria Cahya , Sutrisno  , Amanah Amri , Yusnawan Eriyanto , Mutmaidah Siti , Baliadi Yuliantoro , Utomo Joko Susilo
Published: November 2021

Porang (Amorphophallus muelleri Blume) is a tuber crop native to the tropics that belongs to the Araceae family. Porang is a potential tuber crops that has been known in Indonesia for a long time, but the value of its product has not been widely disclosed. The planting area covers over 45,000 ha with East Java as the main production areaMadiun-East Java has a long and the oldest history of porang cultivation in Indonesia and has great potential for porang development. Characterized and officially released its local cultivar as an official released cultivar would protect the local germplasm and can be used as a basis for character improvement. Porang Madiun 1 cultivar has morphological characteristics of compound leaf type, dark green-green leaf color. The color of the leaf edges is pink, but as the age of the plant increases, the leaf edges turn white. Porang leaf surface smooth-wavy, hairless. The edges of porang leaves are smooth- wavy, depend on sunlight intensity. Stem shape was round, stem color was green with white spots and longitudinal lines, The pattern of spots on the stems has a sparse density, with the color of the stems varying depending on the age of the plant. Shape of bulbil was irregular round with various size. Average corm weight of Madiun 1 was 0.1 kg for first year porang plant, 0.4 kg for second year porang plant, and 1.6 kg for third year it became 1.6 kg with the average number of bulbils 1.8, 4.9, and 16.7, respectively
Screening of shade tolerant hybrid maize based on stress tolerance index
Authors: Bidhari Lesty Ayu , Effendi Roy , Andayani Nining N. , Bambang Slamet
Published: November 2021

The development of adaptive and high-yielding maize varieties tolerant to shade stress is the right strategy to increase productivity and national maize production by utilizing the land in shaded conditions or under annual stands with 40% shade intensity. This study aimed to assess the best genetic material before releasing new shade tolerant maize varieties. This experiment was conducted in shaded and unshaded conditions in the Indonesian Cereal Research Institute, Maros, from July-October 2018 in KP. Pandu, North Sulawesi under coconut trees from March-August 2019. The design is using a randomized block design with three replications. The genetic material used consisted of 10 three-lane cross-hybrid maize, SHD01, SHD02, SHD03, SHD04, SHD05, SHD06, SHD07, SHD08, SHD09, and SHD10, and two comparison varieties of three-lane cross-hybrid maize, Bima-19, and P-35. Shade causes a reduction in light intensity, impacting changes in the microclimate under the shade. This is indicated by the dynamics of changes in light intensity which are quite high between maize crops in shaded and unshaded conditions. Tolerance to shade stress was assessed by measuring the difference in yield between unshaded environmental conditions and shaded environmental conditions to assess average productivity under normal and shaded conditions using the stress tolerance index (STI). The adaptive level in shade conditions of the candidate varieties SHD02 and SHD10 was significantly better than that of the Bima 19 and P 35 varieties, with the STI values of these candidates being 0.87 and 0.80, while the two comparison varieties Bima 19 and P 35, were respectively only 0.62.
Evaluation of anthocyanin corn under various agro-environment in Indonesia
Authors: Jamaluddin  , Paesal  , Syuryawati  , Muzdalifah  , Fattah Abdul
Published: November 2021

In the last decade, purple corn gain more attention mainly due to its high nutritional value and attractive color appearance. Purple corn contain anthocyanin 350% higher than normal corn. Based on its excellence, the research was conducted to find out of high yield purple opv corn with good resistance to downy mildew. The experiment was conducted by using randomized block design with three replication. The variable observed including agronomic character like vegetative, generative and scored disease of downy meldows. The result showed that two opve candidate were PMU(S1).Synth.F.C1 and PMU(S1).Synth.D.C1 have the highest yield6,80-6,85 t/ha, higher 50% than PLU. C0 (check). PMU(S1).Synth.F.C1 showed moderate resistence to downy meldows (20%-35%) and PMU(S1).Synth.D.C1 susceptible (>60%).
Yield performance and agronomic character association in soybean genotypes
Authors: Hapsari RT , Adie MM , Krisnawati A
Published: November 2021

The aim of this research was to evaluate the performance of yield and yield components of soybean genotypes, as well as the relationship pattern among characters that affect the seed yield. The research material consists of 145 F5 lines and five check cultivars, which were evaluated for their yield and yield components in Malang and Probolinggo, using a randomized block design with two replicates. The combined analysis of variance for yield and yield component showed a significant interaction effect between location and genotype for the number of branches, the number of empty pods, 100 seed weight, and seed yield. The performance of yield and yield components of soybean genotypes tested in Malang showed earlier maturity, taller plants, larger seed size, and higher seed yields when compared to research conducted in Probolinggo. In the selection for the best genotypes, ten genotypes were chosen for their large seed size criteria, while two genotypes were chosen for their relatively medium maturity (81 days) in the location of Malang. In Probolinggo, of the ten genotypes, three genotypes with medium maturity, and three genotypes with medium seed size. The selected genotypes will proceed to the stage of the advanced yield trial. The association study revealed that soybean yield has a positive correlation with plant height, number of nodes, number of branches, number of filled pods, days to flowering, and days to maturity. Those yield components could be used as selection criteria in the breeding program to obtain high-yielding soybean cultivars.
Combining ability and heterotic value of ten lines maize genotypes tolerant to tidal-swamp soil stress
Authors: Suwarti  , Ghulamahdi Munif , Azrai Muhammad , Sopandi Didy , Trikoesoemaningtyas  , Sulistyono Eko
Published: November 2021

Development of maize hybrid for tidal swampland was initiated by selecting and combinate some superior line genotypes that tolerate to the restrictions in target environment. This study aimed was to evaluate the capability of ten maize lines result of selection on tidal swamp acid sulphate soils to obtain GCU, GCA, and heterosis values based on parental yield averages. The experiment has consisted of ten fine line genotypes which have selected in 2019 at the tidal swamp. Each parent was crossed in half-diallel combination, resulting in 46 entries, including the inbred parents. The entries were planted in a randomized complete block design with three replications. The research was conducted on Bajeng Research Station Experiment 5°18’S and 119°30’E from September 2020 to January 2021. The result shows that GCA ability and SCA ability was significant to yield in the form of grain (15% moisture content), the number of ear per plot, ten ear weight, ten corncob weight, ear harvested weight, 1000 seeds weight, plant height, ear length and the number of seed per ear. Grain yield of W6xW9 crosses obtains the highest value of 9.36 tha−1, non-significantly different to hybrid check P35 (9.35 tha-1). The highest GCA value in the grain yield character was obtained on W9 parental line (0.64**). The highest SCA was obtained on the crossing of W7 x W8 (2.61). The highest heterosis value was revealed in W5 x W10 hybrid (4.80). However, W7 x W8 crossing heterosis value was 2.34, indicate that a high SCA effect did not usually generate high heterosis. To perform high heterosis value, W10 was good as female parental.
Observation of promising tungro resistant rice lines in West Sulawesi
Authors: Muazam Arif , Mansur  , Panikkai Sumarni
Published: November 2021

Food needs, especially rice, are a priority for agricultural businesses in Indonesia. The development of the world population in general and Indonesia in particular encourages a rapid increase in rice productivity. So it is demanded to have variety of rice that is resistant to disease and has superior rice productivity. Efforts to increase rice yields can not be separated from the efforts of assembling new superior varieties that are disease resistant as well as high yield potential. One of the plant breeding activities is observation activities. To explore the potential of rice strains after the screening stage, it is necessary to evaluate the germplasm or selected rice strains so that genotype can be screened which gives a positive response to both biotic and abiotic stresses. Tungro disease is generally the main problem in efforts to increase rice productivity. Tungro disease can attack rice plants from seedlings, vegetative stadia leaves through the host of green aphrodisiacs (Nephotetix vieressens). In vulnerable rice and supportive environmental conditions, this disease can cause farmers to fail to harvest or ‘puso’. The use of resistant varieties is the most practical and economical ways of controlling tungro disease. The purpose of the study was to evaluate the resistance of the rice breeddings lines to tungro disease. The research was conducted during Planting Period II in 2019 in the endemic area of Tungro Kalukku, West Sulawesi. The genetic materials tested as many as 26 strains from the group of researcher germplasm of Tungro research station and resistant check varieties namely Inpari 36 and comparison production namely Ciherang. The results showed that the strains tested had a diversity of different resistances that showed varying responses to tungro disease. Rice breeddings the best from checker varieties Ciherang and Inpari 36 namely: Strains No.2, 10, 12, 16, and 19 can be recommended for used further testing.
Evaluating cassava best management practices towards low fertility soil in West Java, Indonesia
Authors: Subekti Nuning A. , Purwanto Oky Dwi , Purwani Endang Y. , Taufiq Abdullah , Ramadhan Rizky P. , Putu Wardana I , Damardjati Djoko S. , Rochani Renny , Sasmita Priatna , Syamsuri Prayudi
Published: November 2021

Marginal land with low fertility is a major problem in cassava cultivation. The purpose of this study was to determine the best combination of fertilization to increase the growth and yield of cassava on an Inceptisols soil. Urea (46% N), SP-36 (36% P2O5), KCl (60% K2O), NPK Phonska (15% N:15% P2O5:15% K2O), Poly4 Sirius (14% K2O:17% CaO:6% MgO: 19% S), and chicken manure were used as a nutrient source into six treatment combinations. The results showed that fertilizer application significantly affected the plant height, stem diameter, leaf number, diameter of tubers, the total number of tubers, number and weight of marketable tubers, and the total weight of tubers per plant. The highest fresh and dry weight of storage roots was achieved in the best management practice involving application of 138 kg N + 36 kg P2O5+ 60 kg K2O + 37 kg Ca + 13 kg Mg + 41 kg S per hectare compared to other treatments where the weight of marketable tubers was also higher. The right combination of fertilizer rates was needed to achieve high yield targets of cassava and depends on the site- specific conditions of soil fertility and nutrient status.
Increasing productivity of mungbean (vigna radiata (l.) Wilczek) under subsistence farming in Eastern Indonesia
Authors: Rahmianna Agustina Asri , Basuki Tony , Kote Medo , Seran Yohanes L. , Rachaputi Rao C.N.
Published: November 2021

Mungbean is one of the major food legume and cash crops grown and consumed by small holder farmers under rain-fed conditions in Eastern Indonesia. However, the mungbean productivity has been low, less than 1 ton ha−1 due to a number of reasons including poor awareness about new varieties and skills of crop management. Two trials: varietal trial and management practices were conducted at Malaka District, East Nusa Tenggara during wet season 2008. The varietal trial in six sites resulted in identification of Sriti, Murai, Betet, and Vima 1 varieties had high productivity (1.1-1.5 t ha−1) with single harvest, shorter maturity, compared to the local varieties which were characterized by lower productivity (1.0-1.1 t ha−1), multiple harvests and longer maturity. The management practices found that selected varieties in combination with improved technology gave doubled seed yields compared to the yields when grown using local technology. These activities showed a reliable pathway to increase productivity of mungbean at small holder levels. The varietal and agronomic management trials demonstrated the impact of the technologies on mungbean productivity at small holder levels and identified future needs to sustain food productivity in remote regions on Eastern Indonesia.
A decision support system for hybrid corn classification
Authors: Zainuddin Bunyamin , Tabri F. , Andayani N. N. , Efendi Roy , Suwardi  , Aqil M.
Published: November 2021

High yielding corn is primarily derived from a cross-pollination among superior appearing male and female plants. Cross-pollination is closely linked at the tasseling/flowering stage, marked by the emergence of tassel for 5-10 days. With the advancement of machine learning, there are opportunities to apply deep learning models to control the purity of plants. The research aims to develop a decision support system based on deep learning to enable earlier identification and removal of contamination/off-type plants during seed production. The datasets containing 1,587 tassel images taken by high resolution camera. The results of the training and the validation sequence indicated a highly correlated accuracy score. A quite contrasting tassel morphology makes it easier for the model to distinguish on and off-type plants. The loss value during the training and the validation stages was 0.05 and 0.1 respectively. A stand-alone graphical user interface (GUI) was deployed to support the early detection of tassels in the field. This tool can be used to support national corn seed production programs.
The growth and yield of several sorghum varieties in the first ratoon
Authors: Saputro Avisema Sigit , Samanhudi  , Harsono Puji , Supriyono
Published: November 2021

At harvest, the stems of the sorghum plant are generally cut down and then it is left abandoned. Meanwhile, the remaining sorghum stems from the harvest have the potential to be regrown for the cultivation of ratoon. The advantages of ratoon cultivation are it has a relatively shorter harvest time than the main crop, requires less water, and lower production costs. The aim of this study was to test the growth and yield of five varieties of sorghum, namely Numbu, Super 1, Suri 3, Keller, and Kawali in ratoon cultivation and to test the growth and yield of sorghum with several selections of the number of shoots in ratoon cultivation. The study used a factorial - Randomized Completed Block Design with 2 treatment factors, repeated 3 times. The first treatment was sorghum varieties consisting of Numbu, Super 1, Suri 3, Keller, and Kawali. The second treatment was the number of shoots consisting of 1 shoot, 2 shoots, 3 shoots, and 4 shoots. Observational data were analyzed using analysis of variance with the F test at 5% level followed by Duncan’s multiple distance test. Observation variables included the height of plant, stem diameter, grain weight per clump, number of grains per clump, the weight of 1000 grains, and yield per plant. The results indicated that the highest plant in the Numbu variety, while the largest stem diameter was in the Kawali variety. The number of shoots 4 increased the grain yield per clump but decreased the plant height compared to the number of shoots that were less. The yield of grains per plot was higher on Super1 varieties as much as 604.33 g or 3.3 ton/ha, however the highest number of grains per clump was on Kawali varieties.
Yield potential of soybean under palm oil trees
Authors: Susanto Gatut Wahyu Anggoro , Pratiwi Herdina , Nugrahaeni Novita , Noerwijati Kartika , Sari Kurnia Paramita , Mutmaidah Siti , Putri Pratanti Haksiwi , Harnowo Didik
Published: November 2021

Research to assess soybean yields planted under palm oil trees was conducted in North Sumatera, Indonesia. This research aimed to provide information on soybean varieties that were most suitable for planting under palm trees. Two experiments were conducted in the palm tree areas i.e. under one-year-old (IP 1) and two years old (IP 2) of the palm tree. In each site, the experiment was arranged in a split-plot design with two replications. The main plot was spacing row arrangements, i.e. double-spacing (50 cm x (30 cm x 20 cm) and single-spacing (40 cm x 15 cm), whereas the subplot was soybean varieties consisted of Dega 1, Dena 1, Argomulyo, and Anjasmoro. Research results showed that the average seed yield obtained in IP 1 was higher than IP 2, and soybean planted in a single-spacing produced higher seed yield compared to double-spacing. Argomulyo variety was superior in IP 1 with a seed yield of 3.66 t/ha and Dena 1 was the most superior in IP 2 with a seed yield 2.17 t/ha, both in single-planting arrangements.
Different controlling methods of fall armyworm (Spodoptera frugiperda) in maize farms of small-scale producers in Cameroon
Authors: Akeme Cyril Njume , Ngosong Christopher , Sumbele Sally Alloh , Aslan Aslan , Tening Aaron Suh , Krah Courage Yaw , Kamanga Blair Moses , Denih Asep , Nambangia Okolle Justin
Published: November 2021

Fall armyworm (FAW) is a polyphagous and voracious pest, destroying maize plants in farms in Cameroon. An annual yield loss is estimated to range from15 to 78%, valued at US$ 2,481 to US$ 6,187 million. With most damage experienced in the mono-cropping system. Maize is the most widely grown cereal crop globally due to its several uses, namely human consumption, animal feed and biofuel. In Cameroon, maize is a staple food grown by small- scale producers in all ten regions. The control of FAW is unsuccessful with only the use of pesticide method, the application is knowledge-intensive, and misuse often leads to pesticide resistance, resurgence and increased production cost. The purpose of this review was to explore the different controlling methods adopted to suppress FAW from causing economic damage in maize farms of small-scale producers in Cameroon. Integrated pest management (IPM) approach was used to control FAW, including cultural control, chemical control, botanicals, push-pull farming system, biological control and indigenous knowledge. Results showed that push-pull farming system provides protection and improves maize nutrition, botanicals have similar efficacy like synthetic insecticide, and wood ash is a bio-pesticide. The combined application of pesticides and handpicking FAW was effective though feasible in small surface areas. Based on the general assessment, the push-pull farming system deserves to be promoted due to its numerous benefits: eco-friendly, enhancement of natural enemies, increased soil fertility and economic returns. Natural enemies and bio-pesticides application are essential to control FAW since farmers are resource-poor, causes no health problem and are environmentally friendly.
Variations of cob rot infection caused by Fusarium verticillioides in the Filial 1(F1) hybrid maize line
Authors: Pakki Syahrir , Sebayang Amelia , Mirsam Hizhar , Septian HM , Suriani
Published: November 2021

The study of infection variations of the cob rot disease caused byFusarium verticillioideson the hybrid maize line Filial 1(F1) aimed to determine the variation of infection of corn cob rot disease caused byF. verticillioides. This research was carried out in Sinoa District, Bantaeng Regency from November 2020 to February 2021. Research design used was randomized Block Design with 3 replications. The treatment were Filial line (F1) of 6 lines (D71, D72, D73, D74, BMD75, D76) and 4 commercial varieties Indonesia (Pioner 36, BISI 2, BISI 18, P36, and NK22). Bisi 2 was used as susceptible check variety and NK 22 as a resistant check. The response of lines D71, D72, D74 and D75, were classified moderately resistant to cob rot diseaseF. v erticilliodies,infected with 30.66%, 32.66%, 33.33% and 28.00%, respectively. Strains D73 and D76, classified as susceptible (47.33% and 46.66%). BISI 2 was very susceptible (62.33% and 63.66%) and NK 22 was resistant (13.33%-14.00%) The variable of infected cobs showed D71, D72, D74 and D75 (27.53%-32.13%) significantly lower compared D73 and D76 (52.56%-44.76). %). Susceptible varieties Bisi 2 (63.06%-62.43%). Asymptomatic seeds (asymptomatic) can achieve internal infection of F.Verticilliodiesseeds, ranging from 14.00%-16.33%.
The effectiveness of the entomopathogenic fungus Metarhizium anisopliae in controlling the green leaf hopper (Nephotettix virescens)
Authors: Ibrahim Elisurya , Firmansyah Firmansyah , Panikkai Sumarni
Published: November 2021

Green leafhopper (Nephotettix virescens) is one of the major pests on rice plants that can be a vector of tungro disease. Current pest control using insecticides by farmers is very worrying because in general it is not as recommended which can cause disturbances in the balance of the ecosystem, so it is necessary to use more environmentally friendly control alternatives, one of which is the use of entomopathogenic fungi that are targeted and do not cause the death of natural enemies. The potential of entomopathogenic fungi as biological control agents needs to be continuously developed to reduce the use of insecticides, one of which is the fungus Metarhizium anisopliae which is a type of entomopathogenic fungus that can kill insect pests. The purpose of this study was to determine the effect of several concentration and application method of M. anisopliae on the mortality of the green leafhopper (Nephotettix virescens). The study was conducted in the Laboratory and Greenhouse of the Tungro Disease Research Station starting from February - April 2020 using a two-factor factorial design in a completely randomized design (CRD). The first factor was the application method consisting of two treatments, namely the spray method (A1) and dip method (A2) while the second factor was the conidia density of Metarhizium anisopliae with 4 levels, namely 0 (C0) as control, conidia density 106 (C1) conidia density 107 (C2) conidia density 108(C3). Each treatment was repeated three times. The results showed that the concentration of 106 by dipping application showed the fastest average death time of green leafhopper imago, which occured after 4 days of application, while the fastest average death time of green leafhopper nymph was 3.67 days after application at a concentration of 10 7 by dipping applications.
Exploration of entomopathogenic fungi as potential biocontrol of corn earworm (Helicoverpa armigera (Hübner)
Authors: Sebayang Amelia , Tenrirawe Andi , Mirsam Hishar
Published: November 2021

In Indonesia, H. armigera caused loss in corn production until 40% and almost attack all region. Therefore, this pest is a concern especially in corn plantations in Indonesia. In the development of H. armigera pest control, the use of entomopathogenic fungi increases after the potential risks of using chemical pesticides in various aspects. Biological control using entomopathogen agents is an alternative control method that has been studied widely and considerably more effective and environmentally friendly. This study aims explore entomopathogen that attack H. armigera which will later be formulated and projected as candidates for biopesticides controlling H. armigera. This research sited in East Java, South Sulawesi, and North Sulawesi in 2011. This research was divided into several stages within a year which were carried out including surveys and samples collection, isolation, characterization, morphological identification and molecular identification (genotyping phylogenetic tree). The research found several pathogens from several location such as Rhizopus sp., Beauveria bassiana, Fusarium sp., Aspergilus flavus, and Gliocladium sp. The character of each Entomopathogenic fungus showed that every isolate has different color and shapes. Based on the results of DNA amplification from eleven fungal isolates using BOX primers, various fragments were produced with sizes ranging from 225 to 1250 bp. The results also showed that all the isolates tested had polymorphic bands with a polymorphic information Content (PIC) value of 0.84. This indicates that these isolates have a low level of polymorphism.
Fermentation time difference of nixtamalized horse dent corn (Zea mays var. indenata) by Bifidobacterium bifidum and Bifidobacterium brevis as source of natural folic acid
Authors: Susilowati Agustine , Aspiyanto  , Maryati Yati , Melanie Hakiki , Lotulung Puspa Dewi N.
Published: November 2021

Bifidobacterium sp. as microbes has potential role in fermentation of nixtamalized horse dent corn (Zea mays var. indentata) to degrade complex components into folic acid-rich corn biomass. Fermentation process on both nixtamalized yellow corn and white corn by Bifidobacterium brevis and Bifidobacterium bifidum as substrat of A, B, C and D were conducted at concentration of corn folic acid inoculum 40% (w/w) and 37 °C for 0, 8, 16, and 24 hours, respectively. Based on dissolved protein yielded, the experiment result showed that the best result of optimization in fermentation of both nixtamalized yellow corn (biomass B) and white corn (biomass D) was achieved by using inoculum of B. bifidum for 16 hours with composition of folic acid of 213.58 and 297.72 μg/mL, total solids of 21.14 and 21.07%, dissolved protein of 0.42 and 0.39 mg/mL, reducing sugars of 34.2 and 37.8 mg/mL, total sugars of 104.7 and 98.6 mg/mL, total acids of 0.37 and 0.44%, N-amino of 0.28 and 0.26 mg/g, and pH 4.82 and 4.49, respectively. In this condition, biomass of B. and biomass of D indicated domination of folic acid monomer with molecular weight (MW) 442.29 and 442.59 Dalton (Da.) at relative intensity 100%, particles size of 1115.1 nm and 1075.7 nm, and particle index of 0.827 and 0.849, respectively. Meanwhile, volatile compounds were dominated by 2,3-butanediol of 4.46 and 10.65%, palmitic acid of 7.63 and 8.26%, octadecenoic acid of 6.31 and 9.5%, lactic acid of 2.37% and 0.53%, respectively.