Use of gibberellic acid to prolong dormancy and reduce losses during traditional storage of yams
✍ Scribed by Girardin, Olivier; Nindjin, Charlemagne; Farah, Zakaria; Escher, Felix; Stamp, Peter; Otokoré, Dama
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 193 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
The annual vegetative cycle of the yam (Dioscorea spp) necessitates a long period of storage. Losses during this period are high and are mainly due to germination. Trials on the e †ectiveness of gibberellic acid for controlling (GA 3 ) storage losses were carried out on the two main species of yam (D cayenensis rotundata and D alata) grown in the Ivory Coast. Methods of application at the apex adapted to the rural environment were tested. Treatment with pro-GA 3 longed the dormancy period and thus reduced losses. This substance was e †ective at low concentration with a long soaking duration (75 mg litre~1 for 2 h) and during a soaking of short duration with a higher concentration (0É5 h at 150 mg litre~1). Because of its stability at ambient temperature, the solution was still active 3 days after being prepared and after reuse of the same dip six times.
1998 SCI.