bluuebunny/crossref_metadata_2025 huggingface dataset:
Determination of Total Antioxidant Capacities in Turkish and Filter Coffee Samples by Electrochemical Methods
Authors: YILDIRIM Sevinç , DEMİR Ersin , GÖK İlkay
Published: June 2020

In this study, cyclic (CV), square wave stripping (SWSV) and differential pulse stripping voltammetric (DPSV) methods were used to determine total antioxidant capacity (TAC) in Turkish and Filter coffees brewed with differently roasted coffee beans such as light, medium and dark. Voltammetric parameters were optimized in pH 4.0 Britton-Robinson buffer solution using carbon paste electrode (CPE). Electrochemical behavior of gallic acid and quercetin as standard antioxidant substances were investigated on CPE under optimum conditions by CV, SWSV and DPSV. With all three electrochemical techniques (CV, SWSV, DPSV), two oxidation peaks were observed for gallic acid approximately at 350 mV and 700 mV, while anodic peaks were obtained for quercetin at 340 mV, 725 mV and 1015 mV. However, anodic peak currents at 350 mV for both substances were preferred using CPE to determine total antioxidant capacities in coffee samples in terms of equivalent gallic acid and quercetin. It was found that coffee samples prepared by light roasted coffee beans showed maximum antioxidant capacity (TAC). TAC values for Turkish coffee prepared with less roasted coffee beans were calculated as 17.868±0.281 g/L and 65.165±1.024 g/L equivalent gallic acid and quercetin using CV method. Also, TAC values for filter coffee were 32.290±0.839 g/L and 118.471±3.529 g/L, respectively. Moreover, TAC values in all coffee samples were also analyzed with DPSV and SWSV as well as CV. As a result, TAC analysis is carried out directly on food samples with electrochemical methods, fast, cheap and without pre-treatment.
Harmonik Sinyallerin Yük Tanımadaki Başarısının İncelenmesi ve Yeni Bir Model Önerisi
Authors: AKARSLAN Emre , DOĞAN Rasim
Published: June 2020

Günümüzde gelişen teknoloji ve akıllı sistemlerin yaygınlaşması ile birlikte yük tarafının kontrolü önemli bir konu haline gelmiştir. Özellikle akıllı evlerde herhangi bir anda sistemde mevcut yüklerin doğru bir şekilde belirlenmesi, onların yönetilebilmesi açısından kritiktir. Bu çalışmada, harmonik akım sinyallerini girdi olarak kullanan yeni bir yük tanıma modeli önerilmiştir. 1000W ısıtıcı, 1200W ısıtıcı, 1000W süpürge, 2200W su ısıtıcısı ve 2100W ütünün elektrik yükü olarak seçildiği çalışmada, bu yüklerin bireysel ya da çeşitli kombinasyonlarda birlikte kullanıldığı durumlarda akım ve gerilim sinyalleri toplanmıştır. Sonrasında bu sinyallerden çıkarılan öznitelikler ve yapay sinir ağları kullanılarak, sistemde herhangi bir anda bulunan yükler belirlenmeye çalışılmıştır. Son olarak öznitelik olarak kullanılan her bir harmonik akım sinyalinin yük tanıma başarısına etkisi incelenmiş ve en etkili öznitelikler belirlenmiştir. Gerçekleştirilen simülasyon sonuçları önerilen modelin yük tanımada çok başarılı sonuçlar sağladığını göstermiştir
An Interleaved Super Lift Luo Converter Design for Aircraft Applications
Authors: ERTAŞGIN Gürhan
Published: June 2020

The main purpose of this study is to adapt a 28V battery powered super Lift Luo converter topology to the aircraft systems by adding the interleaving feature. It is aimed to have better efficiency compared to conventional designs. F-22 military aircraft and civil aircraft such as Boeing 787 use 270V DC for battery systems. New standards for the avionics using 270V DC may not apply to older avionics. Therefore, conversion from 28V to 270V can be an advantageous application for both new and old systems. As a result, an interleaved super lift Luo converter has been designed to increase the voltage from 28V to 270V with a quite high conversion ratio so existing old systems stay up-to-date due to developments. Analysis of this new interleaved super lift Luo converter was carried out with a double loop PI controller. The topology uses silicon carbide MOSFETs as high-frequency switches. This paper shows the design philosophy of the converter and proves the system with simulations.
Investigation of the use of photovoltaic solar water pump by occupants of residential buildings in Ile-Ife, Nigeria
Authors: Wahab Akeem , Oni Olamiposi Joy
Published: June 2020

The study examined the types of pumps used in supplying water to buildings, assessed the factors affecting the adoption and use of photovoltaic solar water pump and the perception of stakeholders on the use of the photovoltaic solar water pump in the study area. These were done to assess the effectiveness of the use of photovoltaic solar technology to improve the availability of water for the use of the building occupants. The study was carried out in Ile-Ife Region, Osun State, Nigeria. Stratified random sampling was used to categorize the selected residential buildings based on their distance limits to the locations of boreholes, 1-300m, 301-700m, and 711-100m respectively. Systematic sampling was further used in the selection of residential buildings and respondents in the study area. A total of 125 questionnaires were administered on the respondents and the data collected were analyzed using both descriptive and inferential statistical methods. The result shows that a very significant proportion of the respondents, 83.33% depended on wells and boreholes while 73.33% of the wells/boreholes used in the study area had pumping facility. A large proportion of the boreholes in the study area had photovoltaic facilities and were majorly (60%) donated by the government. The most significant factor that influenced the adoption and use of photovoltaic solar water pumps was the level of technical know-how (mean score of 4.1167) and the most ranked benefit had from the use of the facility was less time spent in collecting water (mean score of 4.3583). To foster the availability of quantitative and qualitative water for the use of the building occupants through the provision of photovoltaic water supply, efforts are direly needed to take advantage of the tropical environment of the study area, to ensure optimum performance and security of the facility to drastically reduce dependence on the national grid.
Comparative analysis of nutrients composition in biochar produced from different feedstocks at varying pyrolysis temperature
Authors: Omotade İfeoluwa , Momoh Samuel , Oluwafemi Bolaji , Agboola Ebenezer
Published: June 2020

Biochar has proved to be effective in improving soil fertility and it is important to know its nutrients variability as influenced by pyrolysis temperature and feedstock type for optimum agricultural productivity. In this experiment four different feedstocks from animal and plant sources were selected and pyrolysed at four different temperatures of 300, 400, 500 and 600 ˚C for 3 hours at a heating rate of 10 ˚C min-1. The feedstocks were Corn cob (CC), Poultry litter (PL), Cow dung (CD) and Peanut shell (PS). The results show that increase in pyrolysis temperature led to decrease in the concentration of many of the parameters analysed in the biochar. At the lowest temperature of 300 ˚C the highest contents of (0.62 %) N in CD, (66.4 mg g-1) P in CC, (8.38 mg g-1) K in CD, (16.2 mg g-1) Ca in CC, (4 21 mg g-1) Mg in CC, (0.28 %) S in CC, were observed. On the other hand, increase in temperature resulted to increase in C, pH, Ash content and the highest pH value of 10.17 was found in CD. From this study, it can be deduced that feedstocks from animal source shows a high range of nutrient when compared to feedstocks from plant source and likewise increase in temperatures led to decrease in some essential nutrient needed by plant for growth and stability in the soil.
Resilient Water Services and Systems: The Foundation of Well-Being.
Authors: Persson Kenneth
Published: June 2020

The book Resilient Water Services and Systems: The Foundation of Well-Being was published 2019. It is edited by Petri Juuti, Harri Mattila, Riikka Rajala, Klaas Schwartz, Chad Staddon, and published by the International Water Association (IWA) Publishers, 2019. The book is reviewed and recommended for both scholars and practitioners to study.
ANALISIS PROFIL RESORT CAGAR ALAM DOLOK SIBUAL-BUALI SEBAGAI PENENTU STRATEGI PENGELOLAAN KAWASAN
Authors: Gurusinga Wienda Lestari Br. , Latifah Siti , Chasanatun Siti Noor
Published: June 2020

Dolok Sibual Buali Nature Reserve with area’s large + 5000 hectares is one of the five resort models resort based management scope Hall of the North Sumatera’s Natural Resources Conservation. Before implement resort based management, must be known the resort profile. This research aims to known the resort profile of Dolok Sibual Buali Nature Reserve based the cover of vegetation and disturbance area by human activity. This research was conducted in the Nature Reserve Dolok Sibual Buali South Tapanuli on May-June 2013. The methods of data collection are observation and interviews. The data analysis consist of maps analysis and interview results analysis. The cover of vegetation in Dolok Sibual Buali Nature Reserve included safe category  with the secondary forest area’s large 4624.84 hectares or about 92.26 % of the total area. The other cover of vegetation are mixed farms, dry land farms, shrubs and rice fields. The form of disturbance area that comes from villages around the area are illegal logging, land conversion, wildlife hunting, theft of non-timber forest products and ecotourism. The conflicts that often occur between communities and area manager are conflicts about area boundaries. Communities also felt anxious caused the wildlife damaged their gardens. The management strategies that should be done are improved the area security and optimization the function of biodiversity preservation by apply the resort based management. Keywords: Cover of vegetation, disturbance area, Dolok Sibual Buali nature reserve, resort based management, resort profile
KARAKTER AGRONOMI BEBERAPA PADI LOKAL ACEH
Authors: Setyowati Mita , Irawan Jekki , Marlina Leni
Published: June 2020

This research aimed to identify the agronomy character of local rice genotype of Aceh as morphological characteristic. The research conducted at the Experimental Garden of Teuku Umar University, Meulaboh West Aceh from September 2016 to March 2017. The materials used in this research are 5 local accessions of local gogo rice of Aceh: Ramos, Dewi, Sigupai, Tinggong, Siputeh, and IR 64 as control. This research used observation method. The growth and production data were presented and analyzed in graphical form. The visual observation data was presented in the form of documentary photographs and described in descriptions. The results showed that the longest plant length at age 20 days after planting (HST), 40 HST, and 60 HST was found in local accession compared to IR 64 varieties. The tillers per clums age of 20 HST were found in Siputeh local accession, while at age 40 HST and 60 HST local accessions were the least number of tillers compared to IR 64 varieties. Long panicle (Dewi), weight of pithy grain (Ramos) and percentage of pithy grain  (Ramos), percentage of empty grain (Ramos), of all best variables are found in local accessions in comparison with IR 64 varieties. The flowering age, weight of 1000 grains, and the number of productive tillers at local accessions are lower than that of IR 64 varieties. Keywords: Character of Agronomy, Gogo Rice, Local Aceh
PENGARUH BAHAN PENGEKSTRAK DAN TINGKAT KADAR AIR TERHADAP VIABILITAS DAN VIGOR BENIH KAKAO (Theobroma cacao L.)
Authors: Suldahna Suldahna , Hasanuddin Hasanuddin , Nurahmi Erida
Published: June 2020

This research is intended to determine the effect of extracting materials and appropriate levels of water content on cocoa seeds, and whether or not there are any differences between the viability and the vigor of cocoa beans. The research was conducted at the Laboratory of Seed Science and Technology of the Faculty of Agriculture of Syiah Kuala University. The experimental design used was Completely Randomized Design of 3 x 3 factorial pattern with 3 x replications, so there were 9 treatment combinations and 27 experimental units. The factors studied were extracts consisting of 3 levels, namely: husk ash, sawdust and whiting and three levels of air three levels, namely: 30%, 25%, and 15%. Measurable benchmarks include Growing Potential (PT), Growing Power (DB), Vigor Index (IV), Growth Rate (KCT), Growth Unity (KST), Time Required to Achieve 50% of Total Relative Germination (T50) and Normal Dry Sprout Weight (BKKN). The results of this study showed that extracting foods are very strong on the viability and strength of the cocoa seeds, which is balanced by the growth potential benchmarks (PT), power growth (DB), growth rate (KCT), growing lavency (KST), the time required to achieve 50% germination total (T50), vigor index (IV) and normal germination weight (BKKN). Meanwhile, fertility rate grew (KST), time needed to reach 50% total relative germination (T50), spirit index (IV) and normal dried germination (BKKN). The results of this study can be concluded that there is a very real interaction between the treatment of extracting materials with cocoa beans content levels. The interaction between sawdust and 30% moisture content is the best combination. Reproduction extracting materials to the effectiveness of increasing viability and vigor of cocoa seeds. The best extraction material is found in the sawdust extracting material. The degree of air hardness to the strength of increased viability and strength of cocoa seed. The best levels of cocoa seed air are found at 30%. Keywords: cocoa, extract, seed
PENGARUH VARIETAS KACANG TANAH (Aracis hypogaea L.) DAN DOSIS PENGAPURAN TERHADAP PENYAKIT BUSUK BATANG Sclerotium rolfsii Sacc. PADA LAHAN GAMBUT
Authors: Chairudin Chairudin , Yanti Lola Adres , Zalukhu Paulina
Published: June 2020

Peanut has high economic value because has high nutritions especially protein and fat, but the development of broad harvesting and peanut production for the last five years (2008-2012) continues to decrease. The main problem of the peanut low production are disease attacks S. rolfsii and the low broad harvesting. The drop of peanut production in Nusa Tenggara Barat causing harm caused by fungi S.rolfsii can reach 58,3 % per year. Peat is potential land to be developed to farming land. Peat has high acidity so fungi S. rolfsii would be easy to develop and resulted disease severity of peanut disease. Solution of this problem is the gift of lime. This study aims (1) to test the effect of dosages of lime to peanut resistance which was infected by rot stem S. rolfsii on peat land; (2) to study interaction of peanut varieties and dosage of lime to rot stem disease attacks S. rolfsii on peat land. This study used factorial block randomized design 2 x 3 with 3 replications. The studied factors were peanut varieties and the dosage of lime. The result showed that on the effect of varieties, the widest disease percentage was on Takar 2 variety on age 21, 28, 42, and 49 day after planting (DAP) that significant difference with Bison variety. The worth disease intensity was on Takar 2 variety that significant difference with Bison variety (on age 45 and 60 DAP). Key words: dosage of lime, peanut varieties, peat land, the sclerotia of Sclerotium rolfsii
EKSPLORASI DAN IDENTIFIKASI Trichoderma spp. DI UNIVERSITAS TEUKU UMAR
Authors: Yanti Lola Adres , Frianos Miru Ajro Love
Published: June 2020

<Trichoderma sp. is land microorganisms which saprophyte and naturally strike pathogens and beneficial for the plant. Trichoderma sp. could hinder the growth of some plant diseases such as Rigidoporus lignosus, Fusarium oxysporum, Rhizoctonia solani, Sclerotium rolfsi. In addition, as the ability to control pathogen, Trichoderma sp. give positive effect on rhizosfer, the growth of plants, and plants production. This research aimed to identifying Trichoderma spp. in University of Teuku Umar. The methodology are exploration, isolation, and macroscopic and microscopic observation. The research showed that the similarity of Trichoderma spp. at FKM, FP, FT, and Rectorat were Trichoderma sp. 1 and Trichoderma sp. 2. On UF of peat and alluvial land only had Trichoderma sp. 1. Keywords: Different location, exploration and identification, Trichoderma spp.
ANALISIS VARIABILITAS CURAH HUJAN DAN SUHU PADA HUTAN SEKUNDER PT. MELAPI TIMBER
Authors: Susanti Susanti , Pamoengkas Prijanto , Wibowo Cahyo
Published: June 2020

The climate is defined as the condition of mean of air temperature, precipitation, the air pressure, the direction of the wind, air moisture and other parameters in long time. The fluctuations of high rainfall significantly affect plant productivity, such as farming, forestry and agriculture. The amount of rainfall is very important in determine the result of the cultivation of plants. Especially if it is associated with the influence of the increase of temperature. The result of this research showed that the type of land at research location were incepticol (land suitability 1) and ultisol (land suitability II, III, IV and V). The mean of annual rainfall in research location (since 2012 until 2014), were 1500 until 2000 mm/years. The mean air temperature was 26-27 oC and air moisture between 82-85.9 %. Keywords: Melapi Timber, rainfall, temperature, type of land, variability
OPTIMALISASI TANAH KRITIS DENGAN MIKORIZA DAN FOSFAT UNTUK PENINGKATAN PERTUMBUHAN DAN SERAPAN HARA KEDELAI
Authors: Yusrizal Yusrizal , Muyassir Muyassir , Syafruddin Syafruddin
Published: June 2020

This study aims to identify the effects of mycorrhiza arbuscular and phosphate source fertilizer on the growth and nutrients absorption of soybean on critical land. The research was carried out in the experimental garden of Agricultural Faculty, University of Syiah Kuala Darussalam, Banda Aceh. The research was done in an experiments using polybag of random design group (shelves) consisting 2 factors, namely mycorrhiza arbuscular consisting of 4 standards without mycorrhiza, glomus 10 g, mycorrhiza gigaspora 10 g, and mixture glomus 5 g + gigaspora 5 g and phosphate fertilizer consisting 4 factors namely without phosphate fertilizer, rock fosfat, guano, and SP-36. The result showed that the interaction effect of mycorrhiza glomus and guano phosphate application improved growth and nutrients absorption of soybean plants. Key words: Gigaspora, Glomus, guano, rock phosphate, soybean, SP-36/>
EKSPLORASI KEBERADAAN GENOTIPE POTENSIAL PADI LOKAL DI WILAYAH BARAT- SELATAN ACEH
Authors: Hadianto Wira , Lizmah Sumeinika Fitria , Jalil Muhammad
Published: June 2020

The South-West Region of Aceh is one of the regions in the province of Aceh that is very rich in local rice diversity that needs to be identified and utilized as a source of genes in ssembling new superior varieties to support food security and sustainable agriculture. This study aims to determine the presence of potential local rice genotypes in the South-West Region of Aceh. This research was carried out in the South-West region of Aceh for potential local rice exploration. The survey results in the Aceh Barat-Selatan region have several potential genotypes of local rice in districts in the South-West Aceh region that are still cultivated by farmers in the south, while potential local gonotypes of rice in the South-West Aceh region, namely Aceh Jaya district: , Jantoeng, Sikleng, Ramos, Sijane, Dewi and Leukat Jeuram, West Aceh districts: Itam Tangke Lango, Head of Gidan Kinco, Lekat jero Lango, Sirendeh Semantuk Wayla and Bo Rayek Semantok Wayla. Nagan Raya Regency: Siputeh, Manyam U and Lekat Tuleng, Southwest Aceh Regency: Sigupai. South Aceh Regency: Sitandun, Silian. Simeulue Regency: Sambai and Pade Sialek. Keywords: Exploration, Local of Rice
KEANEKARAGAMAN HAMA DAN MUSUH ALAMI PADA TANAMAN PALA (Myristica fragrans HOUTT.) DI ACEH SELATAN
Authors: Lizmah Sumeinika Fitria , Agustinur Agustinur
Published: June 2020

The diversity of insects, both pests and natural enemies in each place differently is influenced by environmental factors and technical culture of cultivation. This study aims to determine the diversity of pests and natural enemies in nutmeg plants in South Aceh. Insect sampling was carried out at nutmeg plantations in South Aceh, followed by identification in the Faculty of Agriculture laboratory, Teuku Umar University. Methods of data collection using purposive sampling, using light traps, pit fall traps, yellow traps. The Parameters of this study are number of individuals, families, and insect diversity obtained. The results showed that the abundance of pests and natural enemies in Meukek was higher compared to Samadua. The Shannon-Wiener index shows a variety of pests in Meukek high (H'=3.029) and moderate in Samadua (H'=2,788). While the diversity of natural enemies in both Meukek and Samadua is relatively low, namely H'= 1.230 and H' = 1.049. Planting patterns and crop management affect the abundance and diversity of both pests and natural enemies in both locations. Plantations in Meukek tend to be heterogeneous which are planted with a variety of plantation crops (polyculture) while nutmeg plants in the same two are relatively homogeneous (monoculture of nutmeg). Keywords: diversity, pests, parasitoids, predators, nutmeg
APLIKASI SERBUK CANGKANG TELUR DAN PUPUK KANDANG TERHADAP PERTUMBUHAN DAN PRODUKSI SEMANGKA (Citrullus vulgaris Schard) PADA TANAH GAMBUT MEULABOH
Authors: Putra Iwandikasyah , Ariska Nana , Muslimah Yuliatul
Published: June 2020

This study aims to determine the effect of eggshell powder application and manure on the growth and production of watermelon on meulaboh peat soils and whether these two factors were real or not. This research was conducted in the experimental garden of the Faculty of Agriculture, Teuku Umar Meulaboh University from December 2018 to April 2019. This study used a 4 x 4 factorial randomized block design with three replications. The egg shell powder (C) factor consisted of four the levels are: C0 = control, C1 = 300 kg / ha (2.25 g / polybag), C2 = 400kg / ha (3 / polybag), C3 = 500 kg / ha (3.75 g / polybag) (Syam et al., 2014). Factor manure (K) consists of four levels, namely: K0 = control, K1 = 50 tons / ha (0.375 kg / polybag), K2 = 100 tons / ha (0.75 kg / polybag), K3 = 150 tons / ha (1,125 kg / polybag) Observation parameters include; plant length (cm), number of leaves, age of flowering, fruit length (cm), diameter of fruit (cm), weight of fruit (kg), production of tons / ha. The results showed that the dose of eggshell had a significant effect on increasing soil pH, a very significant effect on the length of the 15 HST plant but had no significant effect on the length of the 30 HST plant, the number of leaves 15 and 30 HST, and the flowering phase. Significantly affect the fruit length and fruit diameter. However, no significant effect on fruit weight and tons / ha production. Manure has a very significant effect on the length of watermelon plants aged 15 HST. However, the effect was not significant at the age of 30 HST. Significant effect on the number of watermelon leaves aged 15 HST, however, very significant effect on the age of 30 HST. Very significant influence on watermelon flowers and very significant effect on fruit length, diameter, fruit weight, and tons / ha production. There was no interaction between eggshell and manure from all treatments. Keywords: Eggshell Powder, Manure, Watermelon, Peatland
PENGARUH JARAK TANAM DAN DOSIS PUPUK KANDANG TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BAWANG MERAH (Allium ascalonicum L.)
Authors: Manik Risqan Fitrah , Nurhayati Nurhayati , Nurahmi Erida
Published: June 2020

Effect of Plant Spacing and Dosage Manure on Growth and Yield of Shallots (Allium ascalonicum L.). This study aims to determine the effect of plant spacing and doses of manure is right for the growth and yield of onion maximum. This research was conducted at the Agricultural Research Station, substations Organic Horticulture Darussalam, Banda Aceh. This research has been conducted on the month in March 2016 to May 2016. This study used a randomized block design (RAK) factorial 2 x 4 with three replications, so that there are 8 combined treatments and 24 experimental units. Factors studied were plant spacing which consists of two levels ie (20 cm x 15 cm) and (20 cm x 25 cm) and the dose of manure which consists of four levels ie (without manure), (10 ton ha-1) , (20 ton ha-1) and (30 ton ha-1). The results showed that the spacing of significant effect on the wet weight berangkasan per plot and the dry weight of tuber per plot, plant height significantly affected the age of 30 HST and berangkasan dry weight per plot. Influential no significant effect on plant height at 15 and 45 days after planting, leaf number aged 15, 30 and 45 days after planting, the number of tillers per hill, tuber number per hill, wet weight berangkasan per clump, dry weight berangkasan per clump, dry weight of tuber per hill. Growth and the best results encountered at a spacing of 15 cm x 20 cm. Dose manure no real effect on all the observed variables. There was no significant interaction between treatment and dose spacing of manure, so there is no relationship between the two factors. Keywords : onion, plant spacing and doses of manure
RESPON BEBERAPA VARIETAS PADI LOKAL (Oryza sativa L.) TERHADAP AMELIORAN ABU JANJANG SAWIT PADA LAHAN GAMBUT
Authors: Safrida Safrida , Ariska Nana , Yusrizal Yusrizal
Published: June 2020

This study aims to determine the response of several local rice varieties to the provision of palm oil bare ash on peatlands. This study was arranged in a Split Plot Design Split plot with 2 treatments and 4 groups, consisting of 4 local rice varieties, namely: P 1 = Cut Krusek, P 2 = Ramos Mirah, P3= Sambe and P4= Bo Sireutoh. Ameliorant factors in palm oil ash consist of: A 0 = Control, A 1 = 15 tons ha-1. The results showed that the varieties had a very significant effect on plant height at 45 HST, number of tillers per clump age 45 HST, number of productive tillers per clump, significantly affected plant age 60 HST, had no significant effect on plant height at 30 HST, number of tillers per family age 30 and 60 HST, rice grain and grain are empty. The Bo Sireutoh variety (P 4 ) has the ability to increase the rate of growth of the number of tillers per clump, the number of productive tillers per clump and the weight of rice paddy per plot. Whereas the Cut Krusek variety (P 1 ) has the ability to increase the rate of growth at the plant height level and the percentage of empty grain. The treatment of oil palm ash ameliorant on peatland is able to increase growth at plant height, rice grain percentage and percentage of empty grain, but it does not significantly affect the number of productive tillers per clum. Keywords : Palm-length ash ameliorates, Rice Varieties
SISTEM OLAH TANAH TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG (Zea mays L.)
Authors: Hadianto Wira , Ariska Nana , Husen Muhammad
Published: June 2020

This study aims to determine the effect of tillage systems on the growth and production of corn. Materials and tools used in this study were: Corn seeds used in this study were Bonanza F1 Varieties, the basic fertilizer used was NPK BASF (15:15:15) 300 kg ha-1. The tools that will be used in this study are Scales, Caliper, Machetes, Hoes, Knives, Meters, Gembor, Buckets, Hend spayers and stationery. The experimental design used in this study was a non factorial randomized block design (RBD) 3 treatments with 3 replications. The factors studied include: Soil processing system (T) which consists of 3 (three) levels including: No Soil (T1), Minimum Soil (T2) and Maximum Soil (T3). Observation parameters observed were plant height, stem diameter, ear length, ear diameter, ear weight, ear weight per plot and ear weight per ha. The results showed that the tillage system had a very significant effect on plant height at the age of 21 HST, weight of crop cobs, weight of cobs per plot and weight of cobs per hectare. Significantly affected plant height at ages 28, 35 and 42 HST, stem diameter age 21.28, 35 and 42, but had no significant effect on cob length and ear diameter. The best treatment is found in the maximum tillage system (T3). Keywords: tillage system, corn, Bonanza F1 variety
PEMBERIAN BEBERAPA ZPT ORGANIK TERHADAP BEBERAPA VARIETAS BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PRE-NURSERY
Authors: Lubis Yazid Habiby , Setyowati Mita , Saidi Aboe B.
Published: June 2020

The aims of this study was to determine the effect of several organic growth regulatory on several varieties of oil palm seedlings (Elaeis guineensis Jacq) in Pre Nursery. The research was carried out in the experimental garden of the Faculty of Agriculture, Teuku Umar University, West Aceh, from March until finished. The materials used were Organic growth regulatory in the form of 50 cc coconut water, 50 cc union extract and 50 cc bamboo shoot extract. While the varieties of oil palm seedlings are varieties that yangambi, simalungun and 239 from IOPRI Medan. This study used a factorial randomized block design (RBD) 4 X 3 with 3 replications. Giving growth regulatory (Z) consists of 4 levels, namely: Z0 = Control, Z1 = Coconut water, Z2 = Shallot Extract, Z3 = Bamboo Extract, while Variety factor (V) consists of 3 levels: V1 = Yangambi, V2 = Simalungun, V3 = 239. Observation parameters are increase in seedling height (cm), stem diameter (mm), number of leaf midribs (midrib), wet stover weight (g), number of roots (number) and root length (cm). Keywords: Growth Regulatory, Varieties, Oil Palm, Pre Nursery
PENGARUH UMUR TANAMAN KELAPA SAWIT TERHADAP KELIMPAHANSERANGGA PENYERBUK (Elaeidobius kamerunicus)
Authors: Saufiah Saufiah , Chairudin Chairudin , Lizmah Sumeinika Fitria
Published: June 2020

Oil palm plants are a type of plant that undergoes pollination through the mediation of polinator agents because of the position of male flowers and female flowers in separate flowers. Elaeidobius kamerunicus is an effective type of pollinating insect in oil palm plants. This research was conducted at this research carried out on oil palm plantations of PT. Karya Tanah Subur (KTS) of West Aceh Regency. This research was conducted from February to March 2018. The collection of insect samples using the Purpose Sample method (sample determined), which uses 4 blocks of plants with different age groups of 4,5,6 and 7 years, respectively. Each age group on each block uses 6 sample plants. The results show the abundance of pollinator insects not influenced by plant age and altitude, but are influenced by the time of sampling. Domination index of palm oil pollinator insect simpons at PT. Karya Tanah Subur (KTS) is worth 0.9280 which means high evenness. The abundance of oil palm pollinators affects the average production of oil palm at PT. Karya Tanah Subur (KTS) Keywords: oil palm, Elaeidobius kamerunicus, pollinator
PENGGUNAAN ATRAKTAN ORGANIK YANG DIPERKAYA PESTISIDA KIMIA UNTUK PENGENDALIAN HAMA WALANG SANGIT SKALA LABORATORIUM
Authors: Kusmawati Kusmawati , R Apriyadi , E Asriani
Published: June 2020

Rice ear bug is a pest which potentially sucks the ripe rice grains, therefore the grain will not be fulfilled or even empty. The usage of organic attractant with the enrichment of chemical pesticide is one of the alternatives to control the rice ear bug.The purposes of this research are to discover the preference of rice ear bug toward the organic attractant and to determine the most effective organic attractant that able to control the rice ear bug in laboratory.The research had been conducted on December 2018 until January 2019, located in experimental garden and research, faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung.This research used experimental method by treating the salted fish attractant, crab, and shrimp.Data was analyzed using Kruskal-Wallis test, descriptive quantitative, and qualitative data will be shown in score and picture.The number and mortality index of rice ear bug on salted fish attractant shows the highest, but not significant different with the shrimp attractant.The number of rice ear bug respectively on salted fish, crab, and shrimp are nineteen, four, and thirteen individuals. Keywords : Rice ear bug,Organic Attractant, Preference
UJI EFEKTIVITAS PRIMING DENGAN BEBERAPA KONSENTRASI EKSTRAK KUNYIT TERHADAP DAYA SIMPAN BENIH KEDELAI (Glycine max (L.) Merrill)
Authors: Junita Dewi , Syamsuddin Syamsuddin , Hasanuddin Hasanuddin
Published: June 2020

Soybeans are staple food after rice and corn. Deterioration of soybeans seed during storage caused by soybeans composed of high lipid.  This study was conducted to investigate the effectivity of priming with various concentration turmeric extract on reduce deterioration soybeans seed during storage. The experiment was arranged in non factorial Complete Randomized Design (CRD) with four levels of turmeric extract concentration treatment, (control, 25%, 50% and 75%.).  The ageing process accelerated by subjecting the seeds to high temperature and relative humidity in a chamber (Deluche methods). Germination and vigour were evaluated periodically. The result showed that priming with turmeric extract could increase vigour and germination under ageing conditions. The 25% concentration  extract showed the  higher value of seed vigour than other concentration. Keywords : Soybeans, priming, turmeric extract, storage period.
UJI POLIMORPIK DAN HETEROZIGOSITAS PADA PROGENI F4 KEDELAI (Glycine max (L.) Merril) TAHAN SALIN DENGAN MENGGUNAKAN MARKA SSR (Simple Sequence Repeats)
Authors: Harahap Evi Julianita , Rosmayanti Rosmayanti , Hanafiah Diana Sofia
Published: June 2020

SSR marker has some merits such as quickness, simplicity, rich polymorphism and stability, thus being widely applied in genetic diversity analysis, molecular map construction and gene mapping. the purpose of this study was to determine polymorpic test and heterozygosity in F4 soybean (Glycine max (L.) Merril) progeni saline resistant characters using SSR (Simple Sequence Repeats) markers. This research was conducted in Biomolecular Laboratory, Socfindo Seed Production Laboratory (SSPL), Kebun Bangun Bandar Village Martebing District Dolok Masihul Regency Serdang Bedagai on December-May 2017. The number of samples were used 44. The five SSR primers (QS080465, QS1101, QS1112, QS100011, and Sat_091) used were specific primers, with a band pattern that was clearly visible around one or two bands. The percentage of polymorphic primers (PLP) of these three populations is high, all populations with a PLP of 100% of the saline resistant character. The effective allele number (Ne) of  7,160 for the progeny population is lower than the number of observed alleles (Na) of 10,000 which means that many progeny individuals are homozygous. The expected heterozygosity (He) value of 0.854 in the progeny population was higher than the observed heterozygosity (Ho) value of 0.027. The overall average observed heterozygosity (Ho) was 0.009 lower than the overall expected heterozygosity (He) of 0.61. This means that each character has a low heterozygosity.Keywords: Progeny F4, soybean, SSR, saline resistant, polymorphic, heterozygosity
PENGENDALIAN GULMA PADA TANAMAN KEDELAI DENGAN MENGGUNAKAN BEBERAPA WAKTU APLIKASI MULSA ORGANIK KIRINYUH (Chromolaena odorata L.)
Authors: Resdiar Amda , Hasanuddin Hasanuddin , Hafsah Siti
Published: June 2020

Utilization of mulch could reduce competition between weeds and soybean crop for water, light, nutrient, maintaining temperature and humidity of soil to create better growth of soybean environment. Soybean crop had a critical period of weeds competition so that siam weed organic mulch should be applied to control weeds at certain time. The research aims to improve the yield of soybean crop that is influenced by application times of siam weed mulch. This study had defferent time of mulch aplications treatment such as at the time of planting, 7 days after planting (DAP), and 14 DAP. The results of this reserch showed that application times had not effected significantly at all parameter. The result also showed the earlier application time of siam weed organic mulch it was on planting time had decreased weed growth then increased yield of soybean. Keywords: Weed, soybeans, mulch, application time
UJI KETAHANAN PADI LOKAL POTENSIAL ASAL BARAT-SELATAN ACEH TERHADAP PENYAKIT HAWAR DAUN BAKTERI
Authors: Hadianto Wira , Ariska Nana , Abidin Zainal
Published: June 2020

Aceh Province has many local varieties that are still cultivated by farmers, especially in the South-West Region of Aceh, the local rice needs to be identified and used as a source of genes in the assembly of new improved varieties to support food security and sustainable agriculture. Bacterial leaf blight (HDB) is one of the limiting factors in rice production. HDB disease is caused by Xanthomonas oryzae pv. oryzae (Xoo), which can reduce rice yield by 30-40%. However, the potential of these varieties as sources of resistance genes against HDB has not been evaluated. This study aims to determine and obtain the potential genotypes of local rice in the West-South Region of Aceh that are resistant to Bacterial Leaves Disease. The research was carried out at the Experimental Garden of the Faculty of Agriculture, Teuku Umar University, Meulaboh, West Aceh from January to completion. The research was carried out starting from the treatment and seeding, preparation of planting media, planting, observation variables: Plant height and number of tillers per age 60 HST, incubation period and length of the observed lesio: 21 HSI: Test results of potential local rice resistance in the West- South Aceh obtained 9 genotypes that are resistant to bacterial leaf blight. The genotypes are used as genetic sources for assembling new high yielding varieties Keywords : Bacterial, Bacterial leaf blight, rice of local varieties,
Energy Efficiency with Centralized Layering Approach For Multihop Wireless Sensor Networks
Authors: Toklu Sinan , ŞİMŞEK Mehmet
Published: June 2020

Sensors and Wireless Sensor Networks (WSN) are an important component of the Internet of Things (IoT) era. Sensors can be used in easily accessible areas such as factories; It is also used in places with difficult access, such as cultivated areas, forests etc. The most important constraint of sensors placed in areas where access is difficult is energy. Therefore, sensors need to spend as little energy as possible to communicate with each other. For this purpose, a number of studies were made concerning the optimization of energy in WSNs. Most of the studies are carried out in MAC and Routing Layers. In this study, we developed a new routing protocol called Base-Station Layered LEACH (BLLEACH) based on LEACH (Low Energy Adaptive Clustering Hierarchy) routing protocol, which is one of the most significant benchmarks in WSNs. BLEACH divides the network into clusters in a multi-hop environment. Experimental results show that BLLEACH outperforms LEACH and MDLEACH (Multi-hop dynamic clustering LEACH) in terms of energy efficiency and throughput.
On some Diagonalized and Regularized Hotelling’s T^2 Tests of Location for High Dimensional Data
Authors: MAKİNDE Olusola , OMOTOSO Odunayo
Published: June 2020

A widely used statistical test of hypothesis for location parameter in R^p is the Hotelling’s T^2 test. This test is efficient if data is normally distributed, ratio of sample size to dimension diverges and there are no outliers in the data. However, it is practically impossible to implement when dimension is greater than sample size. As a remedial measure, diagonalized and regularized Hotelling’s T^2 tests were proposed. In this paper, powers of regularized and diagonalized Hotelling’s T^2 tests are compared with the usual Hotelling’s T^2 test in low dimension and the usual Hotelling’s T^2 perform much better. It is observed that diagonalized Hotelling’s T^2 test may have low power for mixture distributions. Due to a comparative performance of regularized and diagonalized Hotelling’s T^2 tests, robust versions of diagonalized and regularized Hotelling’s T^2 tests are proposed in high dimension in the presence of outliers. The powers of these tests were compared using simulated as well as real datasets.
EFFECTS OF INTEGRATING INSTRUCTIONAL MODELS WITH LECTURE METHOD ON ACADEMIC PERFORMANCE OF STUDENTS OF SMALL CLASS-SIZE IN ZARIA EDUCATIONAL ZONE KADUNA STATE
Authors: Yusuf Aminu
Published: June 2020

This study investigated the effects of integrating instructional models with lecture method on academic performance of students of small class-size in some Biology concepts among Senior Secondary School Students in Zaria Education Zone. Fifty students randomly selected from two Senior Secondary Schools constitute the sample for the study. The schools were grouped into two. one as experimental with 25 students and the other as control with 25 students from the total population of 4,450 S.S.S 3 students in the zone. The study adopted a pretest, posttest quasi-experimental and control group. The subjects in the experimental groups were taught by Integrating Instructional Models with Lecture while the control groups were exposed to the lecture method. A Biology Achievement Test (BAT) with Reliability Coefficient o f 0.75 was used to measure the students’ achievement after the treatment. The data collected was analysed using mean, standard deviation and t-test. Results indicated that there is a significant difference in the mean academic performance of students taught Biology concepts using Integrating Instructional models with lecture method compared to those taught using lecture method of instruction in small class size. Based on the findings it was recommended that Integrating Instructional models with lecture method should be used by Biology teachers to teach in Senior Secondary School. Biology teachers should be trained on the effective use of instructional models in Senior Secondary Schools among others.
DEPRIVATION: AN IMPEDIMENT TO THE PROGRESS OF SCHOOL CHILDREN IN NIGERIA
Authors: Musa Ya'u Haruna
Published: June 2020

Many Nigerians hare attributed the falling standard of education in tins country to inadequate Government support of the educational sector as well as the insufficient number of trained and qualified teachers. This author is, however, of the opinion that the falling standard of education in Nigeria is, primarily, as a result of deprivation. Deprivation, by the consensus among scholars, is the lack of what is essential for adequate development or a failure to satisfy basic needs. There are a number of children whose educational progress has been impeded by environmental handicaps, such a s poverty, poor housing conditions, inadequate parental care, linguistic and emotional deprivation, lack of parental interest in their education, material deprivation and absence of a father-figure, and a background offering little stimulation, among others. Furthermore, there is no doubt that those children would have recorded improved school progress if there had been an improvement in the condition in which they live. It is strongly recommended that governments (Federal, State and Local) should do everything possible to alleviate the suffering of the Nigerian populace and raise their levels of awareness about the importance of education so that children could get their desired education.
LEVEL OF AWARENESS , EXTENT OF INVOLVEMENT AND OBSTACLES TO EFFECTIVE IMPLEMENTATION OF NATIONAL GENDER POLICY ON BASIC EDUCATION IN SOKOTO STATE
Authors: Hakimi Muhammad Wadata , Muhammad Rabi
Published: June 2020

The paper examined the level of awareness, the extent of involvement and probable obstacles to the effective implementation of the national gender policy on basic education in Sokoto State. A sample of 180 teachers was drawn from the population of teachers at the Junior Secondary School level in Sokoto Slate through a stratified random sampling technique. A questionnaire tagged Teachers Awareness and Involvement Questionnaire (TAIO) was used to obtain information from the teachers. Results of the study show that teachers in the state are not aware of the existence of the National Gender Policy in basic education, they are also not involved in the implementation of the policy. The most important obstacle to the successful implementation of the policy being teachers' insufficient knowledge of the various aspects of the policy. It was recommended among others that teachers should be given adequate training and orientation for the implementation of the policy considering the fa c t that teachers are the cornerstone of the implementation of any education policy.
ENHANCING QUALITY TEACHING THROUGH MENTORING: THE PERCEPTION OF PRIMARY SCHOOL TEACHERS IN OWERRI EDUCATION ZONE OF IMO STATE
Authors: Izuagba A. C. , Afurobi A. O. , Oruwari J.
Published: June 2020

The aim of the study was to find out the perception of teachers towards enhancing their professional and human developments through mentoring using Owerri Educational zone. The result of the study would be significant as it would provide a basis for incorporating the mentoring system into teachers' development programmes. Four research questions were formulated to guide the study. A simple random sampling technique with non-replacement balloting was used to sample hundred (900) teachers in the area of study. Data for the study were collected using a structured questionnaire relating to the topic and analysed with simple percentages The result of the analysis showed those primary school teachers were not aware of the benefits of enhancing their profession and personal development through mentoring. Teachers in the area of study had a negative perception towards enhancing their personal and professional development through mentoring by years of experience. The levels o f education, sex are not determining factors in the teacher's perception o f their professional development through mentoring. Based on the result some recommendations were made which include a review of the current development programmes of teachers to incorporate the mentoring system, and team teaching should be encouraged to facilitate networking and sharing of best practices among teachers among others.
COMMUNITY PARTICIPATION: A NEW DEVELOPMENT IN EDUCATIONAL MANAGEMENT
Authors: Fika Ibrahim Baba
Published: June 2020

Communities can play a variety of roles in the provision and management of education and learning processes. Community contribution to schools can go beyond the traditional financial contribution. It can however extend to a broader range of functions which include administrative (such as school maintenance), managerial (such as student and teacher discipline), financial (mobilizing of funds and resources), pedagogical (establishing a preschool), personnel (monitoring teacher attendance). The community is responsible for providing a harmonious working condition in school. The focus of the school, teaching methods, the focus of the curriculum as well as the school discipline are all ultimately desired from the community in which the school functions. If there is no harmonious and dynamic relationship between the community and school, education will be pallid, illusive and unable to make any positive impact on the learners' behavior. It is therefore against this backdrop, that this paper examines community participation and effective school management.