Relationships of Fungicide Application to Late-Blight Development and Potato Growth Parameters in the Tropical Highlands of Uganda and Kenya

Simple item page
dc.contributor.authorOlanya, O. M.
dc.contributor.authorEl-Bedewy, R.
dc.contributor.authorOjiambo, P. S.
dc.contributor.authorHakiza, J. J.
dc.date.accessioned2023-05-21T18:52:39Z
dc.date.available2023-05-21T18:52:39Z
dc.date.issued2001
dc.description.abstractThe impact of fungicide applications on late blight development, potato growth parameters, and yield was quantified at field sites in Kenya and Uganda during the 1999 and 2000 cropping seasons. In Kenya, three potato varieties were evaluated at two sites, at altitudes of 1800 m and 2200 m. In Uganda, three varieties were evaluated at one site at an altitude of 2400 m. Leaf, stem, root, and tuber biomass were sampled and quantified during the cropping season. Dithane M-45 fungicide was applied to the experimental plots at the onset of disease at intervals of 7, 14, and 21 days. Final tuber yields differed significantly by as much as 15% between fungicide-treated and untreated controls across the three sites. The severity of late blight differed among sites and between years as a result of variations in environmental conditions. Fungicide application intervals significantly affected disease progress, and the area under disease progress curve (AUDPC) was significantly lower in the fungicide-treated plots than in the control (unsprayed) plots. Tuber biomass accumulation was also significantly affected by fungicide applications. Varieties Tigoni and Rutuku have relatively higher levels of polygenic resistance to late blight and showed low levels of disease severityen_US
dc.identifier.citationOlanya, O. M., El-Bedewy, R., Ojiambo, P. S., Ewell, P. T., & Hakiza, J. J. (2001). Relationships of fungicide application to late blight development and potato growth parameters in the tropical highlands of Uganda and Kenya. International Potato Center, 1990-2000.en_US
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/8757
dc.language.isoenen_US
dc.publisherInternational Potato Centeren_US
dc.subjectTropical Highlandsen_US
dc.subjectFungicide Applicationen_US
dc.subjectLate-Blight Developmenten_US
dc.titleRelationships of Fungicide Application to Late-Blight Development and Potato Growth Parameters in the Tropical Highlands of Uganda and Kenyaen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Relationships of Fungicide Application to Late-Blight.pdf
Size:
369.15 KB
Format:
Adobe Portable Document Format
Description:
Relationships of Fungicide Application to Late-Blight Development and Potato Growth Parameters in the Tropical Highlands of Uganda and Kenya
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Agricultural and Veterinary Sciences