TIME VARIATION IN FLOWER QUALITY AND YIELD OF ZINNIA

in HortScience
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  • 1 Department of Horticulture, Forestry and Recreation Resources, Kansas State University, Manhattan, KS. 66506.

The introduction of an alternative crop invokes a myriad of unknowns. Cyclic production patterns need to be described so that staggered plantings can be programmed to provide continual product supply to the marketplace. The impact of time on flower quality as well as yield is critical. Zinnia elegans `State Fair Mix' (tall and large flowered) and `Pumila Mix' (smaller flowered) were field-produced for study. Flower diameters of Z. elegans `State Fair' and Pumila displayed similar patterns; increasing from first harvest to week 5, decreasing until weeks 8/9 and then beginning to increase in week 10. Flower diameters were smaller at weeks 8/9 than at initial harvest. The number of stems harvested (per sq. meter) of Pumila decreased from initial harvest (13.5) until weeks 5-7 (7.5) and then increased dramatically to week 10 (38). Stem numbers of State Fair decreased from initial harvest (4.9) until weeks 4/5 (1.6) and then increased through week 9 (6.8).

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