Working Papers Archives - Sweetpotato Knowledge Portal

Early Maturing Sweetpotato DataBase 20170915

Author: Gruneberg Wolfgang Contributors: Raul Eyzaguirre, Luka Wanjohi October 10, 2017

Database for early bulking (the <100-day sweetpotato): Early bulking: Information for 49 early bulking released / launched varieties were uploaded in a database on the “sweetpotato knowledge portal”. Early maturing (time from planting to harvest of 2.5 to 3.5 months) is a sweetpotato attribute to be found across all sweetpotato …

Size: 17.0 kB
Type: xls
Pages: 1

Implementing CIP’s Vision: Impact targeting

Author: Kelly Theisen, Graham Thiele et al. Contributors: Raul Eyzaguirre, Luka Wanjohi, Administrator 2008

This is a study on Implementing CIP’s Vision: Impact targeting. This study reports an updated targeting exercise to identify priority populations of the world for CIP’s commodity research, combining indicators of livelihood and the importance of the two crops of principal concern to CIP, potato and sweetpotato. Indicators of livelihood …

Size: 292.3 kB
Type:
Pages: 31

Farmer-to-Farmer Extension Approach in Malawi: A Survey of Organizations

Author: Godfrey Kundhlande, Steven Franzel et al. 2016

To improve smallholder farmers’ access to information, many extension services use farmers to help disseminate information that their fellow farmers can use to help increase agricultural productivity. This extension approach is referred to as “farmer-to-farmer,” and the farmer extension agents are variously referred to as lead farmers, model farmers or …

Size: 2.4 MB
Type:
Pages: 55

Biofortification, Crop Adoption, and Health Information: Impact Pathways in Mozambique and Uganda

Author: Alan de Brauw, Patrick Eozenou et al. Contributors: Raul Eyzaguirre, Luka Wanjohi, Administrator, Tawanda Muzhingi November 01, 2015

Biofortification, breeding staple food crops to be dense sources of essential micronutrients, is fast emerging as a strategy to fight micronutrient malnutrition. Large-scale biofortification investments are being made in several developing countries, but until recently little rigorous evidence about the impact of these investments has been available. In this paper, …

Size: 410.2 kB
Type:
Pages: 30

How resistant plant varieties avoid suppression of RNA silencing by viruses as exemplified by sweetpotato: Better food security through virus control

2013

Size: 612.6 kB
Type:
Pages: 13

CHALLENGE THEME PAPER 5: INTEGRATED CROP MANAGEMENT

Author: Andreas Oswald, Regina Kapinga et al. Contributors: Raul Eyzaguirre, Luka Wanjohi, Administrator, Tawanda Muzhingi 2009

Overall Challenge: Yields of sweetpotatoes are low in Africa and improved crop management will be critical to increases in productivity and yet there is virtually a research vacuum on integrated crop management (ICM) and most farmers have few incentives to intensify crop management. So the question is: how can quality …

Size:
Type:
Pages:

Challenge Theme Paper 4: Sweetpotato Value Chains

Author: John Lynam , Berga Lemaga et al. Contributors: Raul Eyzaguirre, Luka Wanjohi, Administrator, Tawanda Muzhingi, Jan W. Low 2010

This paper is part of a series of theme papers compiled into an International Potato Center Social Science Working Paper entitled Unleashing the Potential of Sweetpotato in Sub-Saharan Africa: Current Challenges and Way Forward. They were prepared in preparation for a Sweetpotato Challenge Workshop held in July 2008 in Addis Ababa. …

Size: 295.9 kB
Type:
Pages: 24

A Geo-Referenced Database of Global Sweetpotato Distribution

Author: Luisa Huaccho, Robert J. Hijmans et al. Contributors: Raul Eyzaguirre, Luka Wanjohi, Administrator, Tawanda Muzhingi, Jan W. Low, Karen Ayabei 2000

This document describes a geo-referenced database of the global distribution of sweetpotato. The database was assembled from many different national-level sources that varied in accuracy and detail. First, a map of relative within-country distribution was made for all countries with sweetpotato production. Administrative boundaries were used to delimit production zones, …

Size: 1.3 MB
Type:
Pages: 59

Challenge Theme 1: Sweetpotato Breeding

Author: Wolfgang Gruneberg, Harrison Dapaah et al. 2009

This paper is part of a series of theme papers compiled into an International Potato Center social science working paper entitled Unleashing the Potential of Sweetpotato in Sub-Saharan Africa: Current Challenges and Way Forward. They were prepared in preparation for a workshop to assess challenges for sweetpotato in SSA. It addresses …

Size: 230.7 kB
Type:
Pages: 42

Blog Archives