 | Traditional Storage of Yams and Cassave and its Improvement (GTZ) |
 |  | (introduction...) |
| | Preface |
| | 1 Introduction |
| | 2 Socio-cultural aspects involved in the production of roots and tubers |
| | 3 Basic comments on the storage properties of roots and tubers |
|  | 4 Yams |
| | (introduction...) |
| | 4.1 The environmental requirements of yams |
| | 4.2 The yam tuber |
| | 4.3 Farm-economic aspects of yam production |
| | 4.4 Yam harvesting |
| | 4.5 Causes of storage losses for yams |
| | (introduction...) |
| | 4.5.1 Dormancy |
| | 4.5.2 Transpiration |
| | 4.5.3 Respiration |
| | 4.5.4 Germination |
| | 4.5.5 Rot due to mould and bacteriosis |
| | 4.5.6 Nematodes |
| | 4.5.7 Insects |
| | 4.5.8 Mammals |
| | 4.6 Traditional storage systems for fresh yams |
| | (introduction...) |
| | 4.6.1 Leaving the yam tubers in the ridges after maturity |
| | 4.6.2 Storing the yam tubers in trench silos |
| | 4.6.3 Storage of yam tubers in heaps on the ground |
| | 4.6.4 Storage of yam tubers in clamp silos |
| | 4.6.5 Storage of yam tubers under a conical protective roof made of maize or millet stalks |
| | 4.6.6 storage of yam tubers in mud huts |
| | 4.6.7 The storage of yam tubers in the yam barn. |
| | 4.7 Measures to improve traditional yam storage |
| | (introduction...) |
| | 4.7.1 Care in harvesting transport and storage |
| | 4.7.2 Curing |
| | 4.7.3 Influencing dormancy |
| | 4.7.4 Influencing the storage climate |
| | 4.7.5 control of rot |
| | 4.7.6 Control of nematodes |
| | 4.7.7 Control of insects damaging stored produce |
| | 4.7.8 Measures for protection from mammals |
| | 4.7.9 The improved traditional yam barn |
| | 5 Cassava |
| | (introduction...) |
| | 5.1 The environmental requirements of cassava |
| | 5.2 The cassava root |
| | 5.3 Economic aspects of cassava production |
| | 5.4 Causes of limitations to storage for fresh cassava roots |
| | 5.5 Ways of and limits to. storing fresh cassava roots |
| | (introduction...) |
| | 5.5.1 Storing cassava roots in the soil after maturity |
| | 5.5.2 Traditional methods of storing fresh cassava roots |
| | 5.5.3 Storage of fresh cassava roots in clamp silos |
| | 5.5.4 Storing fresh cassava roots in crates |
| | 5.5.5 Storing fresh cassava roots in a dip |
| | 5.5.6 Storing fresh cassava roots in plastic bags |
| | 5.5.7 Use of modern methods to store fresh cassava roots |
| | 5.5.8 Measures to prepare fresh cassava roots for storage |
| | 5.5.9 Suitability of storage systems for fresh cassava roots on a small farmholder level |
| | 5.6 The processing of cassava roots |
| | 5.6.1 The purpose of processing |
| | 5.6.2 Hydrogen cyanide and its release |
| | 5.6.3 The production of cassava chips |
| | 6 Summary |
| | 7 Bibliography |
(introduction...)
JOCHEN KNOTH
Cover: photo K. Gaesing
Published in 1993 by:
GTZ-Postharvest Project
Pickhuben
4
D-20457 Hamburg
a project of technical assistance carried out by:
Deutsche Gesellschaft fhnische Zusammenarbeit (GTZ)
GmbH
Postfach 5180
D-65726
Federal Republic of
Germany
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