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  • Author or Editor: Lelia F. Scott x
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Abstract

After 4 weeks indoors, ‘Annette Hegg Dark Red’ (‘AHDR’) and ‘Gutbier V-14 Glory’ (‘GV14’) had higher leaf abscission than ‘Mikkel Improved Roch-ford’ (‘MIR’). ‘AHDR’ abscised more bracts than ‘MIR’ or ‘GV14’. Plant grade was highest for ‘GV14’. Fritted Trace Elements-treated (FTE) and Micromax-treated (MICROMAX) plants lost fewer leaves and bracts and had a higher plant grade than Perk-treated (PERK) or Soluble Trace Element Mix-treated (STEM) plants. Plants held in dark storage for 3 or 6 days had greater leaf abscission than plants not subjected to storage. Bract drop was highest for 6 days storage. Dark storage of 0 or 3 days had higher plant grade than 6 days dark storage.

Open Access

Abstract

Plant width and bract color were greater after the production period for ‘Annette Hegg Dark Red’ and ‘Gutbier V-14 Glory’ poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch) when fertilized with Osmocote 14N-6.1P-11.6K than Osmocote 18N-2.6P-10K. Plant height, width, bract color, foliar color, and plant quality increased as fertilizer rates increased from 3 to 9 g/pot. Plants fertilized with 14N-6.1P-11.6K had the least bract loss, greater fresh weight, and the best plant quality after the 30-day postharvest period. Poinsettias fertilized with the lowest rate of 3 g/pot and held for the shortest storage duration had the least leaf, bract, and cyathium loss and highest fresh weight and plant quality. Plants illuminated with the incandescent (INC) light source had the lowest leaf loss and highest fresh weight when compared to cool-white fluorescent (CWF).

Open Access

Abstract

Euphorbia pulcherrima Willd. cvs. Mikkel Improved Rochford (MIR), Annette Hegg Dark Red (AHDR), and Gutbier V-14 Glory (GV14) were subjected to 2 storage methods (24 hours/day light or 24 hours/day darkness) for 2, 4, 6, or 8 days, and then held for a 14-day postharvest evaluation period in the greenhouse. Light-stored MIR and AHDR plants had a lower leaf drop but a higher cyathium drop as compared to dark-stored plants. GV14 was unaffected by storage methods. All cultivars retained better postharvest quality when stored for a minimal duration of time.

Open Access

Abstract

Sleeved poinsettia plants (Euphorbia pulcherrima, Willd. cv. Gutbier V-14 Glory) had less abscission and damaged bracts and maintained better long-term postharvest quality 30 days after treatment than did nonsleeved plants. Plants had better quality after 30 days in the postharvest environment when the storage temperatue was 12.8°C as opposed to 7.2° or 18.3°. The longer storage durations of 6 or 9 days resulted in plants with greater abscission and lower quality for the 30-day postharvest period than the 3-day storage duration.

Open Access