1998 Summer Bedding Plant Trial Summary Douglas A. Bailey Appreciation is expressed to Holly Scoggins; Bernadette Clark; Ingram McCall; and Paul Lineberger and his staff at the Horticultural Field Laboratory for all of their technical assistance. In other words, they did the work! If you would like a copy of the entire report in PDF format (requires Acrobat Reader), click here.
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Table 1. Solar energy, temperature and precipitation from May through September 1998 and 30 year temperature and precipitation averages for Raleigh, NC. |
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Month |
Daily average solar radiation received (Langleys/day) |
Daily average temperature (°F) and percent change from 30 year avg |
30 year average daily temperature (°F) |
Monthly precipitation (inches) and percent change from 30 year avg |
30 year average monthly precipitation (inches) |
|
May |
688 |
69.5 (+2%) |
68.1 |
3.66 (-13%) |
4.22 |
|
June |
778 |
76.3 (+2%) |
74.9 |
3.13 (-16%) |
3.73 |
|
July |
754 |
80.5 (+2%) |
78.8 |
0.59 (-88%) |
4.84 |
|
August |
710 |
75.3 (-3%) |
78.0 |
7.47 (+65%) |
4.52 |
|
September |
620 |
75.8 (+5%) |
72.1 |
4.51 (+17%) |
3.85 |
Temperatures were slightly warmer than normal during May&endash;July
and during September; they were slightly below normal during August
(Table 1, Figure 1). Looking at the entire five month season, temperatures
averaged 75.5 °F, which is about 1.5% above normal (74.4 °F
is our 30 year average daily temperature for May through September).
Figure 1. Daily minimum and maximum temperatures for Raleigh, NC from 1 May through 30 September 1998.
Rainfall received during the 5-month period (19.36 inches) was below our average of 21.2 inches (Table 1 and Figure 2) and much below our record 35.3 inches of rainfall during the 1996 season. May and June were dryer than average; July was extremely dry. August was well above average, and September was above average for rainfall.
Figure 2. Rainfall received in Raleigh, NC from 1 May through 30 September 1998.
Beds were pretreated with Basamid® for weed control
prior to planting. Fertilizer was applied as a preplant incorporation
and as dry applications during the bedding plant season. No insecticide
applications were made during the evaluation in order to document major
pest problems. No major pests were noted during the 1998 season, however
the Japanese beetle population seems to increase every year in the gardens.
Plant diseases were less prevalent in 1998 than in 1997 or 1996. The
lack of rainfall may have accounted for the reduction in diseases such
as Rhizoctonia that sometimes present a problem. The major disease problems
included Botrytis blight and bacterial leaf spot on geraniums.
Plants were given a visual rating by the same individual once a week
beginning 3 June 1998, three weeks after planting through 19 weeks after
planting; the final evaluation date was 23 September 1998. The rating
was based on plant performance and appearance, including floriferousness,
plant size and shape, and freedom from insect and disease problems.
The rating scale used ranged from 1 (very poor) to 5 (excellent), with
0.5 unit increments; a 0 rating was given if all seven plants of the
cultivar died. Weekly ratings were averaged to provide an overall rating
for the entire season. We used the seasonal average ratings to select
the N.C. State Leaders of the Pack and the NCSU Exceptional Performance
Winners.
The following companies graciously sponsored the 1998 trial gardens. The companies are acknowledged in the ratings table and in the listings by the abbreviation that appears to the left of the company name. Appreciation is also given to BASF Specialty Products; to Fafard, Inc.; and to the North Carolina Commercial Flower Growers' Association for their contributions towards the trials.
«» AAS -- All-America Selections, 1311 Butterfield
Road, Suite 310, Downers Grove, IL 60515
«» AT -- American Takii, Inc., 301 Natividad Road,
Salinas, CA 93906
«» BALL -- Ball Seed Co., P.O. Box 335, West Chicago,
IL 60185
«» BCG -- Bear Creek Gardens, P.O. Box 9100, Medford,
OR 97501
«» BEN -- Ernst Benary of America, Inc., 1444 Larson
Street, Sycamore, IL 60178
«» BFP -- BallFloraPlant, 622 Town Road, West Chicago,
IL 60185
«» BG -- Bodger Seeds Ltd., 1800 North Tyler Avenue,
Lompoc, CA 91733 3618
«» BWN -- Berylwood Nursery, Inc., P.O. Box 2, Lexington,
NC 27293-0002
«» DHN -- D0hnfeldt Inc., P.O. Box 947, Albany, OR
97321 98664
«» ECKE -- Paul Ecke Ranch, P.O. Box 230488, Encinitas,
CA 92023-0488
«» FIS -- Fischer USA, Inc., 2955 Balmont Road Suite
110, Boulder, CO 80301
«» FN -- Floranova, 106 Third Street, P.O. Box 1362,
San Juan Bautista, CA
«» GOLD -- Goldsmith Seeds, Inc., P.O. Box 1349, Gilroy,
CA 95020
«» GRS -- Grimes Seeds and Plants, 11335 Concord-Hambden,
Concord, OH 44077
«» HWN -- Homewood Nursery, 10809 Honeycutt Rd., Raleigh,
NC 27614
«» NCSU -- Department of Horticultural Science, Box
7609, North Carolina State University
«» NOV -- Novartis Flower Seeds, Inc., 5300 Katrine
Avenue, Downers Grove, IL 60515-4095
«» OGL -- Oglevee, Ltd., 152 Oglevee Lane, Connellsville,
PA 15425
«» PA -- PanAmerican Seed Co., P.O. Box 438, West Chicago,
IL 60185
«» SAK -- Sakata Seed America, Inc., 105 Boronda Road,
Salinas, CA 93907
The following were selected in 1998 on their ability to display attractive landscape color throughout the majority of the bedding plant season. At any one time, other species or entries may have made a better short-term showing, but the "Leaders of the Pack" were selected for consistent, dependable full-season performance as a source of color and beauty in the landscape. The cultivar source is shown in parenthesis.
Each year, the best of the best, those cultivars that exemplify outstanding
performance during the trials, will be recognized as Exceptional Performers.
The winners are judged on full-season performance and are recommended
as outstanding selections for our region. Growers, retailers and landscapers
are encouraged to consider these cultivars first for their color needs.
Only five cultivars were selected from 517 entries in the 1998 trial
garden:
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