Sweetpotato Knowledge Portal
Discriminated between resistant and tolerant cultivars in response to Sweet potato feathery mottle virus (SPFMV) and Sweetpotato chlorotic stunt virus (SPCSV). Dual infection by SPCSV and SPFMV cause sweetpotato virus disease (SPVD), that can cause devastating losses. • Identified SPVD field resistant clones to be used as parents to breed …
Read More »Poster: Can farmer multipliers meet QDS standards in the production of sweetpotato planting material?
Sweetpotato production in Tanzania is below the country’s potential due to limited availability of clean planting material during the planting season, usually at the onset of rains. Farmers mostly depend on materials conserved from the previous season whose quality is often unknown. This contributes to spread of Sweet potato virus …
Read More »Poster: Sustainable uptake of insect proof net tunnels among farmer multipliers: What do we need to consider?
Sweetpotato production in Tanzania is hampered by high virus incidences. These viruses exercise synergistic interactions leading to up to 98% yield losses. Further, this makes their control difficult. It is therefore important to equip farmers with simple and affordable technologies which they can use to manage the spread of SPVD …
Read More »Poster: Improving Sweetpotato Virus Diagnostics
Virus infection, by a number of different types of viruses, is one of the most important constraints to sweetpotato production globally, especially in Sub-Saharan Africa (SSA). Sweet potato chlorotic stunt virus (SPCSV) and Sweet potato feathery mottle virus (SPFMV) are considered to be the most widespread and are particularly devastating when …
Read More »Release of Two Orange-fleshed Sweetpotato Cultivars, ‘SPK004’ (‘Kakamega’) and ‘Ejumula’, in Uganda
Two orange-fleshed landrace sweetpotato cultivars: ‘SPK004’ (‘Kakamega’) and ‘Ejumula’ were approved for release by the Ugandan Plant Variety Release Committee in Apr. 2004. This is the third lot of sweetpotato cultivars to be officially released by the sweetpotato program in Uganda, the first two being released in 1995 and 1999. ‘Ejumula’ …
Read More »Viruses and virus-like diseases affecting sweet potato subsistence farming in southern Tanzania
A survey for sweet potato viruses was conducted in 32 farmer’s fields in Mbinga and Songea districts of the Ruvuma region in Southern Tanzania. Plants showing virus-like symptoms were observed in 25 out of 32 fields examined. Sweet potato virus disease (SPVD) incidence was low in Mbinga district (16.7%) on …
Read More »Causes and control of virus diseases of sweetpotato in developing countries: is sweetpotato virus disease the main problem
This a progress report documenting the causes and control of virus diseases of sweetpotato in developing countries. Further, it reports on efforts sought to determine if sweetpotato virus disease is the main problem.
Read More »Sweetpotato viruses: 15 years of progress on understanding and managing complex diseases
Sweetpotato (SP) (Ipomea Batatas (L) Lam) a member of Convolvulaceae family is important food security crop globally. The SP is indeterminant perennial and is grown as an annual crop in the tropic and subtropics. The most used propagation method is vegetative resulting in virus accumulation within planting stocks. This has …
Read More »Production of virus free sweetpotato planting materials using horticultural fleece
Sweetpotato (Ipomea batatas) is one of the most important staple crops in densely populated parts of Eastern Africa and is quickly becoming an important supplementary staple in the southern part of the continent. It is vital to small scale farmers with limited land, labor and capital. One of the major …
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