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Search Results: 1 - 10 of 27 matches for " Waktole Sori "
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Management of Helicoverpa armigera (Lepidoptera: Noctuidae) by Nutritional Indices and Botanical Extracts of Millettia ferruginea and Azadirachta indica  [PDF]
Tarekegn Fite, Tadele Tefera, Mulugeta Negeri, Tebekew Damte, Waktole Sori
Advances in Entomology (AE) , 2018, DOI: 10.4236/ae.2018.64019
Abstract: The development of hosts that are resistant and evaluation of botanical extracts to H. armigera Hübner (Lepidoptera: Noctuidae) is crucial for sustainable management, yet very limited in Ethiopia. Therefore, this study was done to identify alternative methods to insecticide control through host consumption study and botanical extracts. The performance of third-fifth larval stages of H. armigera on three host plant varieties including chickpea, tomato and faba bean and botanical extracts against the third larval instars and oviposition deterrence was studied under laboratory condition (22°C ± 2°C, 55% ± 5% RH, 12:12 L: D photoperiod). Significant differences were found in the efficiency of conversion of ingested food (ECI%) (F = 80.06; df = 6, 2; p < 0.05) and efficiency of conversion of digested food (ECD%) (F = 175.91; df = 6, 2; p < 0.05) values of H. armigera reared on the three host plant varieties of the whole larval instars. The minimum relative consumption rate (RCR) (11.271 ± 0.328) and maximum approximate digestibility (AD) (177.9 ± 1.928) values of the whole larval instars were on Dagaga and Koshari, respectively. The values of relative growth rate (RGR), ECI% and ECD% of the whole larval instars were highest on chickpea varieties and lowest on tomato Koshari. Among chickpea varieties, Habru was relatively resistant to larval instars of H. armigera. Botanical extracts at 50% neem oil (NO), 5% birbira seed extract (BSE) and 5% neem seed extract (NSE) (18.4%) resulted superior in larval mortality however, statistically not different. At both 5% and 2.5% concentration level of botanical extracts the minimum larval mortality was recorded from neem leaf extract (NLE). Maximum numbers of eggs were laid on control treatments and the minimum eggs were on 5% BSE. The deterrent effect of 50% neem oil was stronger (ODI = 17.66%) than that of 5% BSE (ODI = 14%) which is statistically similar value with 5% NSE (ODI = 13%). In conclusion, the result indicated that use of Habru chickpea variety with 50% NO was very effective in controlling both the larvae and deterring the adults of H. armigera from egg lying. These measures could be important in the wider managements of H. armigera by integrating host resistance and botanical extracts.
Association Between Angular Leaf Spot (Phaeoisariopsis griseola (Sacc.) Ferraris) and Common Bean (Phaseolus vulgaris L.) Yield Loss at Jimma, Southwestern Ethiopia
Fikre Lemessa,Waktole Sori,Mulatu Wakjira
Plant Pathology Journal , 2011,
Abstract: Common bean (Phaseolus vulgaris) production in the tropics is usually limited by damage due to Angular Leaf Spot (ALS) caused by Phaeoisariopsis grisola. Field experiments were conducted in 2005, 2006 and 2007 at Jimma, Ethiopia, to determine the amount of yield loss due to ALS and to investigate the relationship between ALS and bean yield. Different levels of disease severity were created on two common bean varieties (GLPX-92 and ICA15541) using natural epidemics by spraying the fungicide benomyl at 7-14- 21 and 28-day intervals and by seed dressing. Generally, all fungicide sprays significantly reduced ALS severity and increased yield and seed weight but seed dressing did not affect significantly. The relative yield and seed weight losses to ALS ranged from 2 to 47 and 15 to 33%, respectively. Single-point regression models predicted that for each per cent increase in ALS severity, there was a seed yield loss of 18 to 124.5 kg ha-1 in GLPX and 12.9 to 103.9 kg ha-1 for ICA15541 and 100-seed weight loss per sample of 100 seeds of 10 to 13 g for GLPX-92 and 13 to 22 mg for ICA15541. The study suggests that fungicide sprays affect ALS epidemics and influence the amount of loss in yield attributable to ALS permitting the crop to reach physiological maturity without being under severe infection. Thus fungicide sprays can be used as a means to reduce ALS severity and increase common bean yield.
Growth and Yield Performance of Anchote (Coccinia abyssinica Lam. Cogn.) in Response to Contrasting Environment
Daba Mengesha,Derbew Belew,Wosene Gebreselassie,Waktole Sori
Asian Journal of Plant Sciences , 2012,
Abstract: Among the major root and tuber crops, anchote is a potential crop produced in West Wollega zone of Ethiopia. It serves as a food, cultural, social and economical crop for the farming communities. Due to the lower attention given to the research and development of anchote, there is no variety so far developed and released. Ten promising anchote accessions were tested at Jimma and Ebantu from June 2010 until October 2010 to determine agronomic performance of the accessions. The experimental design was a randomized complete block design with three replications. The results indicated that yield and yield components were significantly (p<0.05) higher for the majority of the accessions under Ebantu than Jimma condition. The highest total biomass, 19.13 kg per 4 m2 plot, was obtained at Ebantu from accession 223098 while the maximum total biomass at Jimma was only 11.69 kg per 4 m2 plot that was obtained from accession 223087. Almost all accessions took longer average time (128 days) to reach 90% maturity under Ebantu condition than Jimma which took 109 days on average. The maximum storage root yield (76.45 t ha-1) was observed for an accession No. 223098, under Ebantu condition, while, the lowest yield was obtained from accession No. 240407 (51.54 t ha-1) under Jimma condition. The highest mean dry matter (30%) was obtained under Ebantu condition for almost all accessions. On the other hand, the lowest mean dry matter (20%) was obtained under Jimma condition. From this study the six accessions 223109, 223087, 223098, 223096, 90802 and 229702 produced better storage root yield, high dry matter content, high biological yield across the two environments indicating a good performance and adaptation. Therefore, these accessions are suggested to farmers in areas of Jimma, Ebantu and with other areas of similar agro-ecological zones.
Book review: Engeseth, S.: "Sharkonomics"
Maja Sori
Tr?i?te/Market , 2013,
Abstract:
Da Fiume a Fogna. Il fiume e lo smaltimento dei rifiuti nelle città europee tra tardo medioevo e prima età contemporanea
Ercole Sori
Revista Theomai , 2001,
Abstract: Este ensayo describe, desde una perspectiva eco-histórica, la compleja relación entre las ciudades y sus ríos en la experiencia urbana europea de la época moderna y contemporánea. Explora la red urbana hidráulica, su contaminación y su recarga durante la difícil transición del poblado tradicional de matriz hidraúlica estática a una de tipo dinámico, como resultado de las innovaciones tecnológicas de la revolución industrial. También se exploran las crisis del sistema así como las soluciones adoptadas, teniendo a las ciudades de París y Londres como paradigmas.
The Impact of Kuna Exchange Rate Volatility on Croatian Exports
Petar Sori
Financial Theory and Practice , 2007,
Abstract: The aim of this paper is to analyze the monetary transmission mechanism through the influence of exchange rate variability on export volume. To date it has been very common to use “historical volatility” as an approximation for exchange rate variability in empirical studies. However, many macroeconomic time series are characterized by heteroskedasticity, i.e. their variance is not constant over time. Thus in this paper the ARCH model is proposed as a model of conditional heteroskedasticity. Also, as an alternative to ARCH we will introduce historical volatility based not only on future but also on past exchange rate values. In exploring the influence of exchange rate volatility and domestic income on export volume, Johansen’s multivariate cointegration approach and error-correction model (ECM) are used. The short run and long run relationships are analyzed separately. The results of econometric analysis draw attention to the different strengths of the relationship between kuna volatility and exports for the two proposed models. The first model shows a mild negative long-run relationship, while the second shows the much stronger aversion of Croatian exporters to volatility as a measure of exchange rate uncertainty.
Subtoposes of the Effective Topos
Sori Lee
Mathematics , 2011,
Abstract: We seek progress in the study of subtoposes of the effective topos. First we treat Van Oosten's result that local operators on the effective topos are internally NNO-indexed joins of what we shall call 'basic' local operators. Our main innovation is the notion of a tree-like structure called 'sight', which provides a tangible representation of local operators on the effective topos. This leads in particular to the establishment of an infinity of new basic subtoposes of the effective topos. Various comparisons (inequalities and non-inequalities) in between these new examples and known examples such as Turing degrees are made. Sights also provide a realizability-like semantics for the first-order arithmetic of subtoposes of the effective topos. The text begins with an overview of relevant tripos theory and some topos-theoretic constructions of local operators.
Effect of Bio-inoculants Applied to M5 Mulberry Under Rain-fed Condition on Growth and Cocoon Traits Performance of Silkworm, Bombyxmori L.
S Waktole, RN Bhaskar
Momona Ethiopian Journal of Science , 2012,
Abstract: Nutrition plays a pivotal role in sericulture. It improves the growth, development, health, feed consumption and conversion of silkworm thereby improving the commercial traits. Silkworm, Bombyx Mori L., is a monophagous insect that drives almost all required nutrients for its growth and development from mulberry leaf. Application of the required nutrient in the required amount to mulberry plant is, therefore, very essential for the successful silkworm growth and cocoon production. The present investigation was carried out at the department of sericulture, GKVK, UAS, Bangalore, India in 2007 with an objective to determine the effect of three bio-inoculants application to M5 mulberry plant on silkworm (PM x CSR2) growth, development and coocoon traits. The feeding experiment was laid-out in Completely Randomized Design (CRD)with eight treatments replicated three times. The result revealed that the larval growth variables and cocoon traits were significantly better when developing worms were fed on mulberry leaves raised by applying the recommended doses of nutrients. However, the recommended rate of chemical fertilizers application was found either the same or on par with 25 per cent reduced Nitrogen and Phospherous (NP) application when supplemented with bio-inoculants (Azotobactersp., Aspergillus awamori and Trichodermaharzianum). This indicate that 25 per cent reduction of NP application does not adversely affect larval growth and cocoon traits when supplemented with the above three microbes.
Plasma and Red Blood Cells Concentration Profiles of Ktamine after Single Intravenous Administration in an Anaesthetic Protocol in Horses  [PDF]
Francesca Sori, Noemi Romagnoli, Domenico Ferrara, Anna Zaghini, Paola Roncada
Open Journal of Veterinary Medicine (OJVM) , 2013, DOI: 10.4236/ojvm.2013.32022
Abstract:

The aim of this study was to describe the concentration profile of ketamine in plasma and red blood cells following an intravenous (IV) bolus in the horse. Ten healthy standardbred horses (two males and height females) 7.7 ± 4.6 (mean value ± SD) years old and weighting 380 ± 21 kg (mean value ± SD) were recruited. The horses were premedicated with acepromazine (0.04 mg·kg-1·IV). Fifteen minutes later they received romifidine (0.08 mg·kg-1·IV), and 5 minutes after they were administered midazolam (0.06 mg·kg-1·IV). Immediately, anaesthesia was induced by ketamine (2.2 mg·kg-1·IV). Venous blood samples were collected at scheduled time points. Plasma and red blood cells (RBCs) concentration of ketamine was assayed using a high performance liquid chromatographic method (HPLC/UV-DAD). The high mean recovery rates, the high sensitivity, the good linearity, suggest a clinical applicability of the analytical method. A bicompartmental model resulted as the most appropriate to describe the ketamine concentrationtime profile for both plasma and RBCs. The fitted regression line between ketamine plasma concentrations and RBC concentrations supports the good correlation between ketamine concentrations in plasma and in RBCs. The kinetic parameters of ketamine calculated for RBC are equal or very similar to the plasma ones. The study confirms the kinetic behaviour of ketamine used in the horse as anaesthetic inducers in routine surgery. Finally, the bicompartmental model well describes the ketamine profile also in RBCs, that it is very close to

Basic Subtoposes of the Effective Topos
Sori Lee,Jaap van Oosten
Mathematics , 2012,
Abstract: We employ a new tool (sights) to investigate local operators in the Effective Topos. A number of new such local operators is analyzed using this machinery. Moreover, we investigate a local operator defined in the thesis of A. Pitts, and establish that its corresponding subtopos satisfies true arithmetic.
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