Abstract: This study was conducted in Sodo District of Gurage Zone, located in Southern Ethiopia. The main objective of the study was to examine the effect of climate variability on maize and Enset production and synthesize farmers` perception towards climate variability in the study area. Particular emphasis was given to examine the variability and trends of key climate variables, noticeably, rainfall and temperatures variation. Climate variability was examined and discussed in this study, ...
n this study, among household heads who participated in this study 81.06% (95% CI 78.5, 83.6) were willing to pay for improved solid waste management service.
Abstract: Mafic to ultramafic rocks occurring in the Lechana area forms part of the Archean high-grade Motloutse Complex terrane in eastern Botswana. Their occurrence as inclusions (displaced fragments) within ~2.6 Ga tonalite gneiss indicates that they are older than ~2.6 Ga. The ultramafic rocks – peridotite and pyroxenite – are widespread in the mapped area as layers, with some layers rich in pyroxenite, others rich in peridotite, and a third type of layer made up of peridotite with p...
Abstract: The concentrations of heavy metals in municipal solid waste (MSW) reflect the amount of metals in products and are directly related to the amount of metals transferred to disposal sites. This study was conducted on MSW dumping sites at Selate and Kile sites in Harar City, Harari Regional State, Ethiopia to investigate the concentrations of some heavy metals in decomposed municipal solid waste and soil. From both dumping sites separately six decomposed waste sampling points were sel...
Abstract: In Ethiopia, the need for pesticides in improved agriculture is increasing but unwise application it has a subsequent effect on honeybees. Hence, the study was aimed to assess beekeeping and pesticide application practices and to identify the toxicity of pesticides on honeybee (Apis mellifera bandasii) at Lemo district, Hadiya Zone, Southern Ethiopia. Questionnaires were organized to collect survey data. Toxicity of pesticides were identified using laboratory via feeding, contact a...
Abstract: An experiment was conducted at Haramaya University, eastern Ethiopia in 2016 main cropping season, to assess the response of chickpea varieties to Rhizobium and P fertilizer rate. Factorial combinations of three ‘Kabuli’ chickpea varieties (Arerti, Ejere and Habru), four rates of phosphorus (0, 10, 20 and 30 kg P ha-1) with and without rhizobium inoculants were laid out in a randomized complete block design with three replications. The main effects of variety had significant ef...
Abstract: The experiment was undertaken to assess Rhodes grass yield and nutritional quality at different harvesting days and levels of N fertilizer application grown under irrigation at Gewane, Afar region. The field experiment was arranged in a 3 x 4 factorial randomized complete block design with three replications. The treatments were three levels of harvesting days (60, 90 and 120 days) and four level of N fertilizer application (0, 23, 46 and 69 kg ha-1 ). Plant height (PHT), number of...
Abstract: The study was conducted in Lume and Adami Tulu Jido Kombolcha (ATJK) districts of the East Shoa Zone, with the objectives to assess the existing status of feed resource in relation to climate change, and examine chemical composition and IVDMD of the major feed resources. One hundred twenty respondents (60 from each districts) were purposively used for the interviews. For sample collection, the grazing land was stratified based on the grazing land present in the study area as protec...
Abstract: The Kgagodi basin is located at 22°28'26.67"S and 27°34'54.10"E, about 7 km South of the Kgagodi village, Central Botswana. This structure is buried by sediments thus it has no pronounced surficial expression. The Kgagodi basin has been suggested to represent an intersection of two fault lines thereby making it a prospective hydrological target. Investigating the Kgagodi basin allows the understanding of the impact process and its effects on geological formations. The curren...
Abstract: Fly ash was explored as a raw material for the production of three fly ash-based coagulants being raw, calcined and calcined– sodium hydroxide complex coagulants. Calcined fly ash and calcined fly ash – sodium hydroxide complex coagulants were prepared by calcining raw fly ash at a temperature of 800ºC and all three were acid washed with hydrochloric acid before being used as coagulants. A fly ash sample from a local coal fired power plant was characterization by means of an X...
Abstract: A combination of petrography and geochemistry (XRF, ICP-OES and ICP-MS) was utilized in order to investigate the magma source(s), magma evolution and petrogenesis implications of the Kgwebe Volcanic Formation (KVF) rock units in the Ghanzi-Chobe Belt portion of the Kalahari Copper Belt (NW Botswana). Based on their texture, the KVF rock units were discriminated into amygdaloidal rocks, porphyritic mafic flows, pyroclastic rocks, porphyritic subvolcanic bodies, quartz-feldspar ...
Abstract: We present a study of carbonate-bearing polyphase inclusions in garnets from leucocratic granitoids intruding metapelitic granulites of the Southern Marginal Zone (SMZ) of the Neoarchean Limpopo high-grade complex, South Africa, during the post-peak stage (2710–2650 Ma; U-Pb ages for zircons and monazites). Ternary feldspar thermometry suggests that the granitoid magma cooled from temperatures 800–900 °C at a pressure of ca. 6.5 kbar. Abundant CO2 fluid inclusions in quartz an...
Abstract: Understanding population exposure to precipitation-related extreme events is important for effective climate change adaptation and mitigation measures. We analyze extreme precipitation using indices (EPIs), including consecutive dry days (CDD), annual total precipitation, simple daily intensity, and the number of extremely wet days, under the past and future climatic conditions over East Africa. The exposure of the East African population to these extreme events at 1.5 °C and 2.0 ...
Abstract: Climate change continues to increase the intensity, frequency and impacts of weather and climate extremes. This work uses bias-adjusted Coupled Model Intercomparison Project Phase six (CMIP6) model datasets to investigate the future changes in temperature extremes over Mediterranean (MED) and Sahara (SAH) regions. The mid- (2041–2070) and far-future (2071–2100) are studied under two Shared Socioeconomic Pathways: SSP2-4.5 and SSP5-8.5 scenarios. Quantile mapping function greatl...
Abstract: Maize and faba bean are cultivated as both sole and intercropping systems by smallholder farmers in eastern Ethiopia. The farmers have been recently practicing intercropping of the two crops. However, productivity of the crops is low and evidence-based information is lacking on on-farm diversity of faba bean and productivity of faba bean-maize intercropping system. The general objective of this research was to investigate on-farm diversity and agro-morphological variability of farm...