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Agronomic Characteristics of Confectionery Sunflower Grown in Florida, USA

Author

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  • Green Jr., Victor E.

Abstract

Testing of confectionery (non-oilseed) sunflower cultivars between 1978 and 1980 in north-central Florida on droughty sandy soils permitted the agronomic characterization of 22 cultivars. These striped, large-seeded varieties are used for confection either in the shell or shelled, salted or unsalted or as bird feed, usually in the shell. Testing was performed at two locations and plantings were made in February, March, April, and Augsut. The data show that sunflower could be added to the crops used in the multiple or relay systems of crop culture common in this area. The chief obstacle to successful sunflower culture in this area is the Alternaria leaf and stem black spot disease caused by the fungus Alternaria helianthi (Hansf.) Tubaki and Nishihara. The first epiphytotic of this disease to occur in the USA was in these and adjacent plots near Gainesville, Alachua County, Florida. Meteorological data including monthly rainfall, growing degree days (GDD) calculated from monthly maximum and minimum temperatures, and total radiation and photosynthetically active radiation are shown tubularly for 1978-1980.

Suggested Citation

  • Green Jr., Victor E., 1984. "Agronomic Characteristics of Confectionery Sunflower Grown in Florida, USA," 20th Annual Meeting, October 21-26, 1984, St. Croix, U.S. Virgin Islands 261574, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs84:261574
    DOI: 10.22004/ag.econ.261574
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