Abstract: Microbial formulations for producing bioorganic liquid fertilizers are promising technology in the future. Thus, the present study was aimed to produce bioorganic liquid fertilizer from khat leaves and onion bulbs through aerobic fermentation in open containers. Macronutrient composition of bioorganic fertilizer and compost tea solutions indicated that Phosphorus (P), Potassium (K), calcium (Ca), and sodium (Na) were found to be significant between bioorganic liquid fertilizer and ...
Abstract: Wastewater contains a variety of chemical, physical and microbial contaminants which may significantly affect soil properties as well as ecosystem function when used for different purposes such as irrigation. Around Harar city, brewery and municipal wastewater has been in use for irrigating some crops cultivated in the area which may have impacted soil properties. The study was aimed to investigate the impacts of brewery and municipal wastewater (BMWW) on selected soil physico-chem...
Abstract: Tremendous waste generated rapidly and creates lots of problems in developing country like Ethiopia. If these solid wastes not managed properly, these would certainly have a negative impact on sustainable living style, local environment, and human health. Therefore, the objective of this study was to assess physico-chemical characterization of municipal solid wastes and assessment of its management practices. To achieve the objective, a cross-sectional descriptive survey design was...
Abstract: Forests play vital role in combating climate change through carbon sequestration in the atmosphere and serving as a carbon sink in the form of carbon pool systems of forest ecosystems. This study was aimed to estimate carbon stock variation along the environmental gradients and its contribution to climate change mitigation in Gara-Muktar forest, Western Hararghe zone, Eastern Ethiopia. A systematic sampling method of thirty- six quadrant plots having a size of 20m x 20m each distri...
Abstract: An extension of human activities including agriculture into the natural vegetation was resulting negative impacts like decreasing population of the wildlife inhabited the natural habitat. This study was conducted to assess and document diversity, distribution, relative abundance of medium and large size mammals in Chukala Mountain Forest. Preliminary survey was conducted and three habitat types montane forest with grassland, woodland and Bush land were identified. A line transect s...
Abstract: The study was conducted at Babile Elephant Sanctuary (BES), to identify and document the list of woody species, and to analyze diversity, richness, evenness and population structural status of woody species and importance of provisioning ecosystem services. The diversity of plant species and population structure of woody species were analysed from 60 quadrats, each with 20 m x 20 m for trees and 5 m x 5 m for shrubs and climbers, using systematic sampling methods with three levels ...
Abstract: Biogas generation and its utility as an alternative renewable energy source are gaining attention, particularly among developing countries. In this study, biogas production was evaluated from Gosspium barbadense leaves (GB) and cow dung (CD) co-digestion in five mixed ratios (A =100% GB, B=25 % GB+75% CD, C=50%GB+50%CD, D=75 %GB+25%CD, E= 100% CD.) under mesophilic conditions using batch digesters. The daily biogas production was subsequently measured by the water displacement meth...
Abstract: Soil fertility depletion is the major challenge for agricultural production in southeastern highlands of Ethiopia and particular in the study area. Inadequate information on soil fertility status is one of the main constraints for site-specific appropriated soil fertility managements in the study area. The study was conducted to assess soil fertility status and mapping under different land use types along toposequence in Dinsho District of Bale highland Southeastern, Ethiopia. Base...
Abstract: This study was conducted in Jallo Muktar forest, Western Hararghe Zone, Ethiopia. Data were collected from December 2018 to January 2019 with the aim of woody species diversity and carbon stock estimation along altitudinal gradients. Transects were laid out on three altitudinal gradients namely lower altitude (LA:2060 – 2410 m.a.s.l.), middle altitude (MA: 2411– 2760 m.a.s.l.) and upper altitude (UA: 2761 -3017 m.a.s.l). A total of 60 sample plots of 20m×20m (400 m2) in each a...
Abstract: Renewable resources play a significant role in reducing carbon dioxide emissions around the world, and with this in mind, biomass and waste is a candidate to be one of the most widely utilized renewable energy resources. Therefore, this research was conducted to investigate the production of biogas from saw dust, cow dung in solo or mix through anaerobic digestion with five treatment ratios, under mesophilic condition (38ºC) using batch digesters at Haramaya University for 30 days...
Abstract: iogas technology, which is meant to produce methane rich gas through anaerobic digestion of biological materials, is an environmentally friendly technology that decreases environmental pollution through decomposing organic wastes and positively impacts the socio-economy of the society. Therefore, the research was conducted to investigate the production of biogas from corn Stover co-digested with goat manure through anaerobic digestion. In this study, five different proportions of C...
Abstract: Land cover and climate changes remain the greatest challenges to the conservation of montane birds; consequently, understanding the effects of these threats can inform conservation efforts. Conservation of birds demands data, not only for the present status but also for projections of future status and vulnerability. This study investigated the impacts of land cover and climate changes on the distribution of bird species of concern in Malawi. The CA-MC model was used to predict fut...
Abstract: The study was conducted with the objective to evaluate the effect of land use types and soil depth on selected soil physicochemical properties. A total of 24 disturbed and 24 undisturbed soil samples were taken from the depth of 0-20 and 20-40 cm for the determination of soil physicochemical properties. The soil samples were analyzed with standard laboratory procedures and varied significantly (P < 0.01 and < 0.05) among land use types and soil depths. Sand, silt FC,PWP,AWHC,Soil O...
Abstract: Biogas is the methane rich gas produced by anaerobic breakdown of organic wastes with the help of methanogenic bacteria under oxygen free environment. The objective of this study was to evaluate production of biogas from co-digestion of goat manure and sludges of beer under anaerobic condition. The three containers were interconnected with a plastic tube having a diameter of 1 cm. The acidified brime solution was prepared by dissolving NaCl in distilled water with few drops of sulf...
Abstract: Soil erosion has become one of the global environmental hazards that limits the survival of people today and hinders sustainable socio-economic development worldwide. It is most severe in the tropical and subtropical regions of the world, especially in developing countries like Ethiopia. Estimating the extent of soil loss and understanding the spatial distribution of erosion-prone areas are critical for planning and effectively implementing soil conservation measures with limited r...