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SASHA Brief 01: Breeding in Africa for Africa (Update)

By July 2016, efforts at CIP-Headquarters in Peru to systematically exploit heterosis were well advanced with testing of hybrid progenies underway following a full cycle of reciprocal recurrent selection (RRS). In Uganda, results on the potential to exploit heterosis confirm selecting strongly for virus resistance using RRS. Genetic gains of …
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SASHA Brief 02: Morphological and agronomic basis of vine survival in sweetpotato under drought prone areas of Mozambique

Drought is the most threatening factor to sweetpotato production in Mozambique. We have identified five released varieties which can give more than 10 sprouts per root after 3 to 4 months of storage in sand. This is a key trait for assuring permanent adoption.
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SASHA Brief 06: TRIPLE S- why participatory testing and local adaptation is critical – learning from Ethiopia

The Triple S (Storage in Sand and Sprouting) method of sweetpotato planting material conservation has been validated in unimodal and bimodal rainfall areas in Ethiopia. In addition to ensuring a supply of planting material at the start of the rains, Triple S significantly reduces incidence of sweetpotato weevil compared to …
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SASHA Brief 07: Analysis of cost structure and pricing strategy for sweetpotato Early Generation Seed – examining experiences from Kenya and Ghana

Public institutions in Kenya and Ghana are using real-time data collection methods to determine the exact costs of producing Early Generation Seed (EGS). This approach is informing pricing strategies to ensure sustainable production of EGS.
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SASHA Brief 08: Assessing irrigation approaches for production of sweetpotato planting material in net tunnels and open fields

This study explored the importance of four factors in irrigated vine production. These were production in net tunnels and open plots, varietal differences, different water delivery systems and water stress levels. All the experimental plots performed better than the control (farmer practice) with both varieties attaining higher yields under net …
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SASHA Brief 09: The missing middle – linking decentralized vine multipliers to early generation seed producers

In Ethiopia, Tanzania and Uganda, we are testing business enterprise models for medium-scale seed multiplication to provide the link between up-stream sources of clean seed and new varieties, and downstream community-based multipliers. After undertaking business skills training, 13 medium-scale seed and root enterprises or cooperatives, are operating on a cost …
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SASHA Brief 10: Rice-Sweetpotato-Rice rotation – agronomic benefits and profitability analysis

Jimmy Lamo, Rice Breeder at the National Agricultural Crop Resources Research Institute (NaCRRI), Uganda observed in an on-station trial, that the rice seed produced on a plot where sweetpotato had previously been planted had higher seed purity. His curiosity has led to a collaboration with the International Potato Center (CIP) …
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