Evaluation of the effect of sorghum-legume intercropping and its residual effect on yield of sorghum in yeki woreda, sheka zone, Ethiopia

The imbalance between the crop production and population growth is currently the major issue in southern Ethiopia. To feed the growing population, increasing the production of food through growing more crop types in the same field as an intercropping is the right strategy. The current study was aimed at evaluating the effect of sorghum-legume intercropping and its residual effect on yield of sorghum. The land equivalent ratio was calculated for sorghum intercropped with pigeon pea and cowpea. Intercropping sorghum with pigeon pea and cowpea increases the land productivity as its Land Equivalent Ratio is greater than 1. In both cases, the land equivalent ratio is greater than 1 indicating the benefits of intercropping. The residual effect of sorghum intercrop with legumes was evaluated on the yield of sorghum. Although there was no statistically significance differences on yield and yield component of sorghum, sorghum planted on the plot of pigeon pea and cowpea sole has 44.6% and 27.8% yield advantage relative to sorghum alone respectively. Planting sorghum under sorghum-cowpea intercropped condition increase the yield of sorghum by 41.8%. The result also shows 74.0% sorghum yield change was observed when planted after intercropped condition of sorghum with pigeon pea. The productivity of sorghum also increases when planted on the plot of sole legume. The current finding in general shows that legume crops contributed to the yield of sorghum either intercropped with legume or grown up using residual contribution of legumes after a year. Therefore, for maximum sorghum production farmers in the area should plant either as intercrop or after residual effect of legumes. Int. J. Agril. Res. Innov. Tech. 9(2): 62-66, December 201

Implicative Algebras

In this paper we introduce the concept of implicative algebras which is an equivalent definition of lattice implication algebra of Xu (1993) and further we prove that it is a regular Autometrized Algebra. Further we remark that the binary operation → on lattice implicative algebra can never be associative.Keywords: Implicative algebra, lattice implication algebras, Autometrized Algebras, regular Autometrized Algebra

Study on geological and structural characterization around Mai Kenetal, Central Tigray in Northern Ethiopia

The present research is aims to study geological and structural characterization around Mai Kenetal, central Tigray, in northern Ethiopia. Topographic difference of the Mai Kenetal area helped in identifying the rock units in the north-western and south-eastern parts of the study area. So that metavolcanic, metavolcaniclastic formations are located in the north and northeast sides whereas slate and phyllite are situated in the south, central and eastern side. Also intrusive granite and dikes are recognized in the central part of the study area. The results shows that the basement rocks are prominently NE-SW trending and shows parallel to the regional lineaments of Mai Kenetal is syncline inliers structure. In study area, the dominant structures such as foliation, shear zone, fold, and fractures like fault, joints, and slickenside are appears. Structural data suggests that the study area has been experienced in three phases of deformation and it also indicated presence of hydrothermal alterations like chloritization, epidotization, sericitization. Based on the lithology study and the non-development of foliation or schistosity suggest that the study area is experienced in low grade metamorphic conditions

Preliminary Study on the Impact of Water Quality and Irrigation Practices on Soil Salinity and Crop Production, Gergera Watershed, Atsbi-Wonberta, Tigray, Northern Ethiopia

Possible long term effects on soil salinity and crop production due to the quality of water and irrigation practices is assessed in an area in Gergera Watershed in Atsbi-Wonberta, Tigray, northern Ethiopia. Ten water  samples collected from hand-dug wells and small household ponds, and thirty soil samples from different depths up to ~100cm were tested for  various parameters such as TDS, pH, anions and cations. Data indicate that both water and soil in terms of quality are acceptable for irrigation  purposes. However, at present the soil salinity is not a serious issue but the data suggests its possible increase with time as indicated by two samples. Some of the issues such as use of sprinklers, organic manure, blending, seasonal crops are discussed in the light of maintaining the  required quality, proper utilization of soil and water resources, and for sustainable development.Keywords: Watershed, Water quality, Soil quality, Hand-dug wells, House-hold Ponds

Work-related operating theatre accidents among surgical residents in Addis Ababa, Ethiopia

Background: With the Human Immunodeficiency virus (HIV) epidemic and infections with hepatitis B, C and D, occupational exposures to these infections is a cause of concern to all health care workers, especially those working in the operating theatre in low income countries.Methods: A cross-sectional study was conducted to investigate the prevalence and context of all work-related accidents that occurred as a result of contamination with blood and blood products, among surgical residents at the Black lion teaching specialized referral hospital, in Addis Ababa, Ethiopia. Data was collected from all 36 surgical residents who were at different stages of their specialty training in 2006/07.Results: Thirty two (88.9%) of the residents were males; 17 (47.2%) in their 3rd and 4th year, and the rest 19 (52.8%) were in their first and second year of training. Of the 36 respondents, 28(77.8%) had sustained a needle-stick injury inside the operating theatre at least twice during their residency (Range=2-10 times). For 13(36.1%), the accidents involved a high risk patient at least once. Cut with a sharp object, contact of blood to an unprotected skin and splash of blood to the eyes and face were reported by 11(30.6%), 27(75%) and 27(75%) of the respondents respectively. Information concerning the most recent occupational injury inside the operating theatre revealed that 31(86.1%) of the residents sustained work-related accident in the 6 months preceding the survey, 8(25.8%) of which involved a high risk patient. All of the 8 (100%) of the recent high risk injuries and 22(95.6%) of the non-high risk injuries were not reported to the hospital’s employee health service. The most frequently cited reasons for not reporting include; “The occupational health service doesn’t exist or I don’t know if it exists in the hospital” for 15 (50%), among others.Conclusions and Recommendations: Overall, the present study revealed that work-related accidents among surgical trainees constitute a substantial risk of acquiring and transmitting blood-borne infections which calls for well targeted educational and other preventive measures in the teaching hospital

Outcomes of colostomy reversal procedures in two teaching hospitals in Addis Ababa, Ethiopia

Background: Colostomy creation and reversal procedures are common procedures, frequently performed by surgeons working in Ethiopia. Collected information is lacking concerning the outcome of colostomy reversal procedures in the country.Methods: A hospital based retrospective analysis was undertaken to describe the patterns of patients who underwent colostomy reversal, the timing of colostomy reversal, the frequently witnessed complications and the postoperative outcomes of patients admitted to the Tikur Anbessa and Saint Paul hospitals in Ethiopia for colostomy reversal procedure. Data was collected from 87 patients.Results: The majority of patients were males 70(82.8%). Seventy-six (87.4%) of the colostomies were situated in sigmoid colon and Hartmann’s colostomy was the most common type in 64 (60.6%). Most colostomies, 69 (79.3%), were created for non-trauma related disease conditions. The interval from the colostomy creation to colostomy closure varied from 8 weeks (2 months) to 72 weeks (18 months) with a mean interval of 28.2 weeks (6.6 months). Most, 71(81.6%) of the procedures were performed by consultant surgeons and the frequently used method was the two layered hand-sewn method in 72 (82.8%) patients. The overall incidence of complication was 17 (19.5 %). The rate of anastomotic leakage is 4(4.6 %). One patient who underwent sigmoid colostomy reversal done initially for gangrenous sigmoid volvulus died after anastomotic leak, making the overall mortality rate 1.1%. More complications occurred during Hartmann’s colostomy reversals. The morbidity rate for reversal performed within 16 weeks (4 months) of its creation was 3/28 (10.7%) for those within 16 to 24 weeks, 0/28 (0%); and for those after 24 weeks, 1/29 (3.4%).Conclusions and recommendations: Colostomy reversal is a commonly performed procedure in our setting and should be well mastered by consultant surgeons and residents under training. The associated morbidity and mortality are found to be low. It appears that delayed reversal is more advantageous and safer than early reversal procedures

Ocular Dermoid in Crossbred calf- A Case Report

The present paper deals with a typical case of ocular dermoid cyst in three weeks old crossbred calf. The patient had a history of lacrimation and a hairy growth in the left eye. Based on the history and clinical examination, the case was diagnosed as ocular dermoid cyst and removed successfully by superficial keratectomy.Key words: Calf, Dermoid, Keratectomy, Teratolog