dc.contributor.author | Hutchinson, Margaret Jesang | |
dc.contributor.author | Murigi, Winnie Wanjiku | |
dc.contributor.author | Musembi, Nicodemus Ndawa | |
dc.date.accessioned | 2014-07-17T08:23:22Z | |
dc.date.available | 2014-07-17T08:23:22Z | |
dc.date.issued | 2011-09 | |
dc.identifier.citation | Optimimization of Agricultural Value Chains for sustainable Development | en_US |
dc.identifier.uri | http://hdl.handle.net/11295/73151 | |
dc.description | Oral presentation at aGRO 2011 Biennial Conference | en_US |
dc.description.abstract | This study aimed at developing postharvest pretreatments for improving vase
life and display quality oflisianthus cut flowers. Equally spaced doses (0, 0.25,
0.5, and 0.75 mMAg) ofsilverthiosulphate (STS) pretreatments were applied
for equally spaced durations of exposure (0, 2, 4 and 6 h) to harvested lisianthus
cut flowers. STS pretreatment was followed by vase solutions containing 2%
sucrose and 1.5% sodium hypochlorite (Jikj. Pretreatment with 0.75 mlvlAg"
for duration of 2 or 6 h improved vase life by 55% and 40%, compared to
distilled water control and the placebo, respectively. The interaction effect of
STS dose and duration of exposure significantly influenced water uptake,
transpiration, and water balance rates. Vase-life constituted of duration to 50%:
wilted florets, or bent-necks, or chlorotic leaves; whichever came first. Out of
the above recommended dosages and duration of exposure, 2 h was found less
reliable than 6 hrs. The duration of exposure of 4 h was found to be detrimental
for STS doses above 0.25 mlvlAg'. The significant efficacy ofSTS at low doses
and duration of exposure revealed in this study presents an immediate solution
towards the gradual phase-out of STS which is a potent environmental
pollutant due to the silver content. Further research is recommended to identify
alternatives to STS. | en_US |
dc.description.sponsorship | National Council of Science and Technology, The Kenya Seed Company | en_US |
dc.language.iso | en | en_US |
dc.publisher | Faculty of Agriculture, University of Nairobi | en_US |
dc.subject | Waterrelations. | en_US |
dc.subject | Heavy-metal environmental pollutant | en_US |
dc.subject | Silver thiosulphate | en_US |
dc.subject | Postharvest technology | en_US |
dc.subject | Eustoma grandiflorum | en_US |
dc.subject | Lisianthus | en_US |
dc.title | Effects of Silver Thiosulphate pretreatments on harvested lisianthus (Eustoma grandiflorum) cut flowers | en_US |
dc.type | Presentation | en_US |
dc.type.material | en | en_US |