Sesame (Sesamum indicum L.) is one of the world’s oldest oil seed crop grown mainly for its seeds. Insect pests are one of the most important factors affecting production and storage of sesame grain affecting both its quality and quantity. In order to assess and determine storage grain loss due to Plodia interpunctella, an assessment was conducted in western zone of Tigray (13°45’ to 14°28’ N latitude and 36°20’ to 37°31’ E longitude) in 2016. Sample of 1 kg sesame grain was taken from 10 small scale’s storage houses in each districts. Collected data analyzed statically with one-way ANOVA. All locations were significantly similar on all parameters. An average weight loss of 17.8% and total percentage loss of 25.2% due to P. interpunctella have been recorded in the surveying areas. P. interpunctella has distributed throughout the sesame producing area of western zone of Tigray and found to be causing substantial grain loss, especially for sesame stored more than a year. Further studies have to be conducted on control strategies of Indian meal moth P. interpunctella.
Key words: Assessment, storage loss, Plodia interpunctella, Sesamum indicum, Western Tigray.
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