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Assessing the degeneration of cassava under high-virus inoculum conditions in coastal Tanzania

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Title Assessing the degeneration of cassava under high-virus inoculum conditions in coastal Tanzania
 
Creator Shirima, R.R.
Maeda, D.G.
Kanju, E.E.
Tumwegamire, Silver
Ceasar, G.
Mushi, E.
Sichalwe, C.
Mtunda, K.
Mkamilo, G.
Legg, James P.
 
Subject cassava
plant diseases
food security
food production
disease control
plant condition
east africa
 
Description Cassava brown streak disease (CBSD), caused by cassava brown streak ipomoviruses (CBSIs), has become the most debilitating biotic stress to cassava production in East and Central Africa. Lack of CBSD-resistant varieties has necessitated the search for alternative control measures. Most smallholder farmers reuse stems from previous crops for planting in the new season. Recycling planting material in this way can lead to “degeneration” owing to the compounding effects of disease. In this study, degeneration was defined as the increase in CBSD incidence and reduction in marketable root yield over time. An experiment was established to study the rates of degeneration in selected cassava varieties Chereko, KBH2002_135, Kipusa, Kizimbani, and Mkuranga1 and cultivars Kiroba and Kikombe under high-CBSD inoculum conditions in Bagamoyo, Tanzania from 2013 to 2017. The experiment was replicated across two seasons: the first planted during the long rains (Masika) between March and June and the second planted during the short rains (Vuli) between October and December. Mean abundance of the whitefly vector (Bemisia tabaci) was much greater during the Vuli season (>19 insects per plant) than the Masika season (
 
Date 2019-10
2019-10-28T14:06:05Z
2019-10-28T14:06:05Z
 
Type Journal Article
 
Identifier Shirima, R.R., Maeda, D.G., Kanju, E.E., Tumwegamire, S., Ceasar, G., Mushi, E., ... & Legg, J. (2019). Assessing the degeneration of cassava under high virus inoculum conditions in Coastal Tanzania. Plant Disease, 103(10), 2652-2664.
0191-2917
https://hdl.handle.net/10568/105536
https://doi.org/10.1094/pdis-05-18-0750-re
BIOTECH & PLANT BREEDING
SOCIAL SCIENCE & AGRICUSINESS
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 2652-2664
application/pdf
 
Publisher Scientific Societies
 
Source Plant Disease