| Abstract Detail
Recent Topics Posters Fischer, Charles [1], McIntyre, Carolyn [1], Schweer, Matthew [1], Anderson, Neil [1]. Effect of day/night temperature differences (DIF) on plant growth in edible Capsicum and Ocimum species. The difference (DIF) between day and night temperatures has significant effects on plant growth. DIF is a widely used technique for height control in greenhouse production of ornamental species. Methods of height control in edible herbs, vegetables, fruits, and flowers are limited due to restricted chemical usage on food crops, particularly for organic producers. The objective of this research was to test whether DIF elicited internode length reduction in pepper and basil and, if so, the effectiveness of zero, +10 DIF for plant height reduction in Capsicum annuum and Ocimum basilicum. Seedlings were grown in 18/18C (zero DIF) and 21/16 (+10F DIF) with long day photoperiods to flowering and were measured weekly for plant height (cm), node number, number of lateral branches, flowering date, and internode length. Plant height, node number, number of lateral branches, and internode lengths were highly significant between DIF treatments. Zero DIF plants were shorter than the +10 DIF treatment with significantly greater numbers of nodes and lateral branches. Zero DIF is an effective technique for non-chemical height reduction for organic greenhouse production of these two species.
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1 - University of Minnesota, 1970 Folwell Avenue, St. Paul, MN, 55108, USA
Keywords:
edible
herbaceous plants
temperature
DIF.
Presentation Type: Recent Topics Poster
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P79029
Abstract ID:2697 |
