Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions
Cercospora leaf spot (CLS) and Alternaria leaf blight (ALB) diseases are major constraints to sesame production. Although disease management through intercropping of sesame with maize and foliar-spray with extracts of Tithonia diversifolia have been found to be effective, the frequency of applicatio...
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| Format: | Article |
| Language: | English |
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Sciendo
2021-01-01
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| Series: | Agricultura Tropica et Subtropica |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/ats-2021-0017 |
| _version_ | 1827939303540391936 |
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| author | Jimoh Muideen Enikuomehin Ololade Adeduro Afolabi Clement Gboyega Olowe Victor Idowu Olugbenga |
| author_facet | Jimoh Muideen Enikuomehin Ololade Adeduro Afolabi Clement Gboyega Olowe Victor Idowu Olugbenga |
| author_sort | Jimoh Muideen |
| collection | DOAJ |
| description | Cercospora leaf spot (CLS) and Alternaria leaf blight (ALB) diseases are major constraints to sesame production. Although disease management through intercropping of sesame with maize and foliar-spray with extracts of Tithonia diversifolia have been found to be effective, the frequency of application of the extracts required to achieve optimal disease control have not been determined. Therefore, a study was carried out to determine the effect of frequency of application of T. diversifolia extract on CLS and ALB diseases of sesame intercropped with maize during the early (June – September) and late (August – November) cropping seasons of 2011. Field experiments laid out in a Randomised Complete Block design and in a split plot arrangement with three replications were conducted in Ejigbo, Nigeria. Treatments consisted of aqueous Tithonia diversifolia leaf extract applied at 7.0, 7.5 or 8.0 % (w/v) in one-, two- or three- spray regimes at 2-week intervals from three weeks after planting (WAP) to plots of sesame intercropped with maize; Unsprayed sesame/maize intercrop; sesame/maize intercrop sprayed with Carbendazim (50 %)WP and unsprayed sole sesame plots. Results revealed that CLS and ALB incidence, severity and defoliation were significantly (p < 0.05) reduced by three-spray regime of 7.5 % (w/v) T. diversifolia extract. The efficacy of 7.5 % (w/v) T. diversifolia extract was comparable to that of 8.0 % (w/v) T. diversifolia extract or synthetic fungicide (Carbendazim 50 %WP). This study showed that the three-spray regime of 7.5 % w/v T. diversifolia leaf extract is sufficient to control foliar diseases of sesame intercropped with maize. |
| first_indexed | 2024-03-13T08:51:41Z |
| format | Article |
| id | doaj.art-e322c670f25d47849241aa8ec93448cd |
| institution | Directory Open Access Journal |
| issn | 1801-0571 |
| language | English |
| last_indexed | 2024-03-13T08:51:41Z |
| publishDate | 2021-01-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Agricultura Tropica et Subtropica |
| spelling | doaj.art-e322c670f25d47849241aa8ec93448cd2023-05-29T10:54:39ZengSciendoAgricultura Tropica et Subtropica1801-05712021-01-0154116517310.2478/ats-2021-0017Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditionsJimoh Muideen0Enikuomehin Ololade Adeduro1Afolabi Clement Gboyega2Olowe Victor Idowu Olugbenga3Department of Agronomy, College of Agriculture, Osun State University, Ejigbo Campus, Ejigbo, NigeriaDepartment of Crop Protection, Federal University of Agriculture, Abeokuta, NigeriaDepartment of Crop Protection, Federal University of Agriculture, Abeokuta, NigeriaInstitute of Food Security, Environmental Resources and Agricultural Research, Federal University of Agriculture, Abeokuta, NigeriaCercospora leaf spot (CLS) and Alternaria leaf blight (ALB) diseases are major constraints to sesame production. Although disease management through intercropping of sesame with maize and foliar-spray with extracts of Tithonia diversifolia have been found to be effective, the frequency of application of the extracts required to achieve optimal disease control have not been determined. Therefore, a study was carried out to determine the effect of frequency of application of T. diversifolia extract on CLS and ALB diseases of sesame intercropped with maize during the early (June – September) and late (August – November) cropping seasons of 2011. Field experiments laid out in a Randomised Complete Block design and in a split plot arrangement with three replications were conducted in Ejigbo, Nigeria. Treatments consisted of aqueous Tithonia diversifolia leaf extract applied at 7.0, 7.5 or 8.0 % (w/v) in one-, two- or three- spray regimes at 2-week intervals from three weeks after planting (WAP) to plots of sesame intercropped with maize; Unsprayed sesame/maize intercrop; sesame/maize intercrop sprayed with Carbendazim (50 %)WP and unsprayed sole sesame plots. Results revealed that CLS and ALB incidence, severity and defoliation were significantly (p < 0.05) reduced by three-spray regime of 7.5 % (w/v) T. diversifolia extract. The efficacy of 7.5 % (w/v) T. diversifolia extract was comparable to that of 8.0 % (w/v) T. diversifolia extract or synthetic fungicide (Carbendazim 50 %WP). This study showed that the three-spray regime of 7.5 % w/v T. diversifolia leaf extract is sufficient to control foliar diseases of sesame intercropped with maize.https://doi.org/10.2478/ats-2021-0017alternaria leaf blightcercospora leaf spotplant extractsesamum indicumtithonia diversifoliaintercroppingspray regimes |
| spellingShingle | Jimoh Muideen Enikuomehin Ololade Adeduro Afolabi Clement Gboyega Olowe Victor Idowu Olugbenga Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions Agricultura Tropica et Subtropica alternaria leaf blight cercospora leaf spot plant extract sesamum indicum tithonia diversifolia intercropping spray regimes |
| title | Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions |
| title_full | Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions |
| title_fullStr | Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions |
| title_full_unstemmed | Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions |
| title_short | Improving the efficacy of Tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions |
| title_sort | improving the efficacy of tithonia diversifolia extract in management of foliar diseases of sesame intercropped with maize under tropical conditions |
| topic | alternaria leaf blight cercospora leaf spot plant extract sesamum indicum tithonia diversifolia intercropping spray regimes |
| url | https://doi.org/10.2478/ats-2021-0017 |
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