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University of Khartoum (2017)

Exclusion Techniques for Whitefly (Bemisia tabasi) Vector of Okra (Abelmoschus esculentus) Leaf Curl Virus Disease

Eltaueb, Marwa Siddig Aljally

Titre : Exclusion Techniques for Whitefly (Bemisia tabasi) Vector of Okra (Abelmoschus esculentus) Leaf Curl Virus Disease

Auteur : Eltaueb, Marwa Siddig Aljally

Université de soutenance : University of Khartoum

Grade : Master of Science (MS) 2017

Résumé
Okra leaf curl virus (OLCV) disease is considered the most important disease of okra in the Sudan. Hence the present study was conducted for the control of this disease by covering the okra seedlings with fine mosquito nets for 45day or by drenching the okra seedlings with the systemic Actara insecticide. The covering technique resulted in 49.91% decrease in OLCV disease incidence during the growing season and the Actara drenching resulted in 54.85% disease incidence during the season compared with the control 75.06%. The plant height measured was ranging from 38-40cm in the previously covered okra plants and was ranging from 30-35cm in the Actara drenched and was ranging from 18-20cm in the control ,respectively. Moreover, there was highly significant increase in the yield with covered plants 6.55 ton/ha.While the control was (3.56 ton/ha). The effect of drenching of seedlings resulted in significant increase in the yield by 5.89 ton/ha.the control by 3.56 ton/ha. And increase in the quality of okra was obtained as the results of both treatments. These results showed highly efficiency for control this disease and considered the first record in the Sudan of controlling OLCV disease by seedlings cover

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Page publiée le 25 novembre 2018