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225 articles for “Variance”
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Performance Evaluation and Yield Stability of Maize (Zea Mays L.) Hybrid Genotypes in Southern Ethiopia
Abstract: Improved maize varieties were released by different agricultural research centers at different times in Ethiopia. However, the productivity of these varieties was not evaluated at wide environment. The variety choice of most farmers in Ethiopia is not suitable for their farm due to lack of awareness about varieties adaptability and their field’s condition. The objective of this study was to evaluate the stability and yield potential of hybrid maize genotypes …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 11, Issue 1, 2022 · pp. 1–6 Read article
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Variability and Association of Characters among Common Bean (Phaseolus Vulgaris L.) Genotypes in Southern Ethiopia
Abstract: This experiment was conducted in Guraghe and Siltie Zones of Southern Ethiopia to assess the extents of variability and associations of characters among common bean genotypes. Data were collected on nine quantitative traits. The analysis of variance revealed significant variation among the traits. Moderate genotypic and phenotypic coefficient of variation was observed for 100 seeds’ weight, pod length and seed per plant. Highest heritability and genetic advances as percent mean …
Published in Research & Reviews : Journal of Botany · Vol. 10, Issue 2, 2021 · pp. 21–27 Read article
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Performance Evaluation and Stability Analysis of Faba Bean (Vicia faba L.) Varieties in Siltie and Guraghe Zones, Ethiopia
Abstract: The experiment was conducted with ten faba bean Varieties for two consecutive years (2015–2016) comprising six environments in order to determine the effect of genotype x environment interaction and to identify and select high yielding, stable and best performing faba bean varieties with better adaptability. The experiment was laid out in a randomized complete block design with three replications. The combined analysis of variance of grain yield showed a highly …
Published in Research & Reviews : Journal of Botany · Vol. 11, Issue 1, 2022 · pp. 20–29 Read article
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Performance Evaluation and Stability Analysis of Medium Seeded Common Bean (Phaseolus Vulgaris L.) Varieties in Siltie And Gurage Districts Of Southern Ethiopia
Abstract: Field experiment was conducted with eight medium seeded for two consecutive years (2020 - 2021) comprising three environments (Mareko, Sankura and Abeshge). The objective of this study was to identify and select high yielding and best performing medium seeded common bean varieties for wide and specific adaptability. Eight medium seeded common bean varieties were used. Randomized Complete Block Design with three replications was used. Data was analyzed using R software …
Published in Research & Reviews : Journal of Botany · Vol. 11, Issue 2, 2022 · pp. 35–40 Read article
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Adaptation and evaluation of Improved Cassava (Manihot Esculentacrantz) Varieties In Southwest Ethiopia
Abstract: Cassava, scientifically known as Manihot esculenta Crantz, plays a crucial role as a primary food source for over 800 million individuals in numerous tropical countries. It serves as a vital dietary staple crop in these regions.. Nutritionally, cassava has a great potential to provide economical sources of dietary energy in the form of carbohydrates and cassava has huge a potential crop to address general food insecurity due to recurring droughts …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 12, Issue 1, 2023 · pp. 14–18 Read article
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Evaluating improved Irish Potato varieties for the yield and agronomic traits in Southwest region of Ethiopia.
Abstract: Despite making substantial contributions to food security, revenue production, the provision of food energy, and the preservation of the resource base, the food potential of horticulture crops, particularly that of root and tuber crops, has not yet been fully tapped and utilized. In order to determine the optimal high yielding, pest and disease resistant/tolerant variety(ies) for the target area, the experiment was conducted to test the adaptability of enhanced potato …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 12, Issue 2, 2023 · pp. 7–12 Read article
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Principal Component Analysis of Black and Brown Seeded Soybean (Glycine max (L.) Merr.) Genotypes at Jimma and Bonga Southwestern Ethiopia
Abstract: Sixty-four soybean genotypes were evaluated for cluster analysis based on their morphological characters. The field experiment was carried out at Jimma and Bonga in south-western Ethiopia during the main cropping season of 2019. The experimental study was laid with simple lattice design with two replications. Data on 11 quantitative agronomic traits were gathered. For all of the examined variables, analysis of variance revealed substantial to very significant variations among genotypes. …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 12, Issue 2, 2023 · pp. 13–17 Read article
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Comaparative Analysis of Elites Maize Hybrid Based on Multiple Traits
Abstract: Field studies were carried out to evaluate the agronomic and yield traits of elite maize hybrids during 2019 and 2020 late cropping seasons with the aim to compare the agronomic and grain yield performance of the hybrids based on multiple traits and to assess the interrelationship among the traits measured. This study included three groups of elite maize hybrids and one open pollinated variety, totalling 126 maize genotypes. Alpha lattice …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 12, Issue 3, 2023 · pp. 42–54 Read article
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Effects of seed and nitrogen with phosphorus fertilizer rates on production of lowland rice (Oryza sativa L.) in Fogera plain, North Western Ethiopia.
Abstract: Rice (Oryza sativa L.) is the main cereal crop in the Fogera. However, crop yields are low due to lack of various agronomic management practices. Among these, lack of site-specific seed rate and fertilizer levels are the major limiting factors. Therefore, a field experiment was conducted at the Fogera National Rice Research and Training Center in 2019 to study the effects of seed and nitrogen with phosphorus fertilizer rates on …
Published in Research & Reviews : Journal of Botany · Vol. 12, Issue 2, 2023 · pp. 7–21 Read article
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Evaluation of False Yam (Icacina oliviformis) Seed Extract as Substitute for Antibiotics on Growth Performance and Carcass Characteristics of Broiler Chickens
Abstract: An experiment was carried out using broiler chickens to determine the effects of false yam seed extract on their growth performance. One hundred and fifty (150) chicks (Cobb strain) were selected and randomly divided into 15 groups of 10 birds each. Fresh false yam seed chips were soaked for 3 days (1 part of fresh seed to 2 parts of water) and extract was decanted and sieved through a fine …
Published in Research & Reviews : Journal of Herbal Science · Vol. 6, Issue 3, 2017 · pp. 4–8 Read article
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Modeling and Optimization of Extrusion Process for Black Gram–Carrot Pomace Incorporated Rice-based Extruded Product
Abstract: The purpose of this study was to optimize ready-to-eat extruded snack with incorporation of byproducts like broken rice, carrot pomace along with black gram to design a product which is rich in fibre and protein content. For optimization of extrusion process for the development of black gram–carrot pomace incorporated rice-based expanded product, experiments were planned in central composite design using response surface methodology. The independent process variables for extrusion were …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 4, Issue 1, 2015 · pp. 5–20 Read article
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Optimization of Bio-surfactant Production by Solid State Fermentation using Response Surface Methodology
Abstract: Optimization of bio—surfactant production was carried out. Response surface methodology (RSM) was used as a statistical optimization tool for the same. Potato peel, an agricultural residue was utilized as the solid state fermentation (SSF) media, which served as both carbon and nitrogen sources. A 25 full factorial central composite experimental design was employed followed by the analysis of variance. The variable factors were Time (days), Temperature (°C), pH, Substrate amount …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 8, Issue 2, 2019 · pp. 21–32 Read article
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Lipid Profile and Nutritional Evaluation of Chronic Renal Failure Patients on Hemodialysis in Jhansi (Uttar Pradesh), India
Abstract: There are numerous side-effects of protein-energy malnutrition in undergoing dialysis patients. Protein-energy malnutrition causes morbidity and mortality higher incidence in dialysis patients. To assess the nutritional status and association between assorted factors used for assessing malnutrition, a cross-sectional study was carried out twice time in a week in 35 chronic kidney disease (CKD) patients. Data were recorded three times in every 30 days interval; 87% of patients were male and …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 3, 2019 · pp. 58–62 Read article
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Research on Laser Hardened Bead Geometry in Laser Hardening Parameters of ASTM Grade3 Pure Titanium
Abstract: AbstractIn the presented study, the laser transformation hardening of commercially pure titanium sheet material of thickness being 1.6 mm is investigated using CW (continuous wave) 1.6 kW solid state Nd:YAG laser. Commercially pure titanium has widespread application in various fields of industries including the medical, nuclear, automobile and aerospace. A full factorial design (FFD) with response surface methodology (RSM) is employed to establish, optimize and to investigate the relationships of …
Published in Research & Reviews : Journal of Physics · Vol. 6, Issue 1, 2017 · pp. 22–37 Read article
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Evaluation of Salinity on the Growth Performance and Cytological Characteristics of Some Selected Sorghum Cultivars (Zabuwa, Deco and Farfara)
Abstract: This research work was carried out to determine evaluate the effect of Salinity on the Growth Performance and Cytological Characteristics of Some Selected Sorghum Cultivars viz., SAMSORG 46 (Zabuwa), SAMSORG 45 (Deco) and Farfara. A nursery experiment was carried out at Federal University Dutse (FUD) in the Botanical Garden of the Department of Biological Sciences. There were three replicates in the fully randomized block design experiment. Treatment employed consist of …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 13, Issue 3, 2023 · pp. 44–63 Read article
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Mixture Probability with Rayleigh Model and Application in Reliability
Abstract: Single Rayleigh distribution (RD) is a unimodal two tailed probability distribution. It is useful for the data which spreads equally to the two sides of its modal value. Some properties of the Rayleigh distribution have been discussed in this paper. Mixture distributions arise in engineering, economics, sciences, biosciences, medical sciences and play vital role. While modeling a great variety of data, a mixture model has been defined (investigated) with mixture …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 3, 2018 · pp. 17–27 Read article
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Robust Quadratic Discriminant Rule using Comedian
Abstract: Discriminant analysis aims to get rules that separate the groups of observations. Moreover, it can be used to classify new observations into one of the known groups. The classical discriminant techniques are based on the classical estimates of mean vector and variance covariance matrix. Unfortunately, these classical estimates are highly influenced by the extreme observations and hence any analysis based on these estimates will provide misleading results when the data …
Published in Research & Reviews : Journal of Statistics · Vol. 8, Issue 2, 2019 · pp. 41–47 Read article
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Canonical Relationship between Indian Stock Price Index and Exchange Rates
Abstract: In this study we have investigated the canonical relationship between stock prices and exchange rates of the emerging Indian economy. We have considered monthly nominal exchange rate of US Dollar, Pound, Euro, Japanese Yen and monthly values of BSE and NSE, stock price index for the period of 3rd January, 2000 to 15th November, 2017. The canonical correlations between the first and second pairs of canonical variate were found to …
Published in Research & Reviews : Journal of Statistics · Vol. 8, Issue 1, 2019 · pp. 12–16 Read article
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Reproductive Performance of Local Rabbits from Three Ecotypes in Northern Ghana
Abstract: AbstractThe objective of this study was to compare the reproductive performance of local rabbits from three different locations in northern Ghana. Purposive sampling was used to acquire 90 weaned rabbits, which were reared for nine months. In all, 24 females and 6 males were reared in each of the three regions in northern part of Ghana (Northern, Upper East and Upper West) for reproductive traits measurement. Parameters measured were gestation, …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 5, Issue 3, 2016 · pp. 14–20 Read article
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Job Sequencing with Fuzzy Processing Times using Credibility Theory
Abstract: AbstractIn this paper, a new algorithm to find an optimal sequence of ‘ n ’ jobs that has to be processed through ‘m ’ machines is developed by treating the processing times of jobs on the machines as fuzzy (imprecise) variables. The algorithm is similar to that of Johnson (1954) which considers the processing times as precise in nature. The proposed algorithm makes use of the concepts of ‘Credibility Theory’ …
Published in Research & Reviews : Journal of Statistics · Vol. 2, Issue 1, 2013 · pp. 14–19 Read article