Entomologia, ornitologia e herpetologia: pesquisas atuais
Acesso livre
ISSN: 2161-0983
ISSN: 2161-0983
Tadele Shiberu, Emana Getu
The tomato leaf miner Tuta absoluta (Meyrick) became a serious pest to tomato crop in Ethiopia since 2012, where it causes a significant damage to the crop. Field studies were conducted during 2015-2017 to determine the effectiveness of different bio-pesticides on management of T. absoluta and the impact of bio-pesticides on the occurrence of this pest on tomato. All tested bio-pesticides caused significant larval mortality, particularly the extract of Azadirachta indica and Allium sativum; and entomopathogenic fungus of Beauveria bassiana were gave 74.26%, 71.82% and 74.14%, respectively. The lowest larval mortality was recorded in mixture of Prosuler Oxymatrin and Emamectin Benzoate 50.66%. However, all bio-pesticides were highly significant (P<0.01) different as compared with the standard check (Coragen 200 SC) 95.83% and untreated control 2.09% within 10th days of application. The maximum mean marketable yields were obtained from Tetraniliprole (Vayego 200 SC) and Coragen 200 SC in all three districts followed by A. indica. The lowest marketable yield was observed by Prosuler Oxymatrin and Emamectin Benzoate (15.69 ton/ha). The minimum leaves infestation and fruits damaged were recorded. Hence, leave and fruit infestation was minimized and marketable yield increased to some extent. Therefore, the tested biopesticides were effective and economically viable to utilize as a component in integrated pest management to control T. absoluta.