White Mango Scale, Aulacaspis tubercularis, Distribution and Severity Status in East and West Wollega Zones, Western Ethiopia
Journal Title: STAR Journal - Year 2014, Vol 3, Issue 3
Abstract
Mango is attacked by many insect pests which reduce the quality and productivity of the crop. Among the insect pests attacking mango plant, white mango scale is the most devastating insect pest. White mango scale, was reported since 2010 from Guto Gida district of East Wollega zone. The distribution and severity of white mango scale was studied in selected 5 districts and 10 kebeles of East and West Wollega and insect infestation and the degree of damage. Results of the survey showed that from the sampled five districts white mango scale distributed to all four districts except Mana Sibu. From the survey it was known that the maximum distance white mango scale dispersed from Loko Keble (Guto Gida district, which was assumed to be the source of original infestation) was 67 km to the West and 58 km to the East direction. Distribution and severity status comparisons between sampled districts and administrative kebele‟s for the formation of clusters of white mango scale per leave per mango showed significant difference at P=0.05 indicating different pest status in the study areas. Moreover, yield data before and after mango scale appearance showed high significant difference. From the current survey it was found that white mango scale is becoming the most important limiting factor for mango production in Western Ethiopia. The dispersal rate is alarming indicating that within a short period of time the pest can invade the whole of Western Ethiopia particularly Wollega zones. Hence, due attention should be given to this pest, so that ecologically friendly management options will be made available for the mango growers in that part of the country in particular and Ethiopia in general.
Authors and Affiliations
Temesgen Fita| Department of Plant Sciences, Wollega University, Post Box No: 38, Shambu, Ethiopia
Response to Soil Acidity of Common Bean Genotypes (Phaseolus vulgaris L.) Under Field Conditions at Nedjo, Western Ethiopia
Soil acidity has become a serious threat to crop production in most highlands of Ethiopia in general and in the western part of the country in particular. A field experiment was conducted to evaluate soil acidity toleran...
Effect of Grain Tef (Eragrostis tef (Zucc.) Trotter) Flour Substitutions with Flaxseed on Mineral Content, Antioxidant Activity, Phytic Acid Content and Microbial Quality of Injera
There is an increased global interest in the food industry to develop and market functional foods in which scientific investigations are limited in Ethiopia. Tef injera functional character can be further enhanced by sub...
Analysis of the Design of Grade 9 Listening Lessons in the Student’s Book and Teacher's Guide of English for Ethiopia
The study was conducted to examine the design of the listening lessons in the Grade 9 English for Ethiopia. The objective of the study was to see how the listening lessons were presented to identify if there were probl...
Factors Affecting Prenatal Care Utilization in East Wollega Zone, Oromia Regional State, Ethiopia
The objective of the study was to identify factors affecting utilization of prenatal care and skilled birth attendant in East Wollega zone. Prenatal care and skilled birth attendant are crucial factor which affects the...
Determination of Water Requirement and Crop Coefficient for Sorghum (Sorghum bicolor L.) at Melkassa, Ethiopia
Knowledge of crop evapotranspiration (ETc), the combined process of evaporation and plant transpiration, is important in agriculture for scheduling farm operations and designing and managing irrigation and drainage syste...