|
Flower Color, Plot Development Over Time, Overall Performance and Comments |
|
|
| Family: | Rubiaceae | ||
| Scientific names: | Pentas lanceolata | ||
| Common names: | Pentas, Star Cluster, Egyptian Star Cluster | ||
| Common plant arthropods (insects/other)/other: | Fungus gnats (in flats), aphids, mites, mealybugs and lepidopterous larvae have been reported on this crop. The tersa sphinx moth (Xylophanes tersa) was found on foliage in Naples, Florida. | ||
| Common plant diseases: | Cercospora
sp., leaf spot; Corynesopora sp., leaf spot; Oidium sp.,
powder mildew; Phyllosticta sp., leaf spot; Pythium sp.,
root rot; Rhizoctonia solani, root and stem rot.;,
Pythium, Botrytis blight. (Index
of Plant Diseases in Florida, 1984 revision.). Fusarium
oxysporum |
||
| Commercial control: | greenhouse. | field/shade house. | |
| Arthropod information: | Pests identified on crops. | Florida pest facts and images. | |
| Disease information: | Plant Disease Facts (Pennsylvania State University) | The American Phytopathological Society | |
| Performance evaluations: | trial reports and other publications. | ||
| More resources: | additional information. | ||
| Nutritional concerns: | pH falling below 6.2 or excessive levels or iron may cause leaf burn to leaf margins of upper foliage. Iron and magnesium toxicity can occur if pH is extremely low, causing tan or brown lesions on foliage. Magnesium containing fertilizers can help prevent the development of deficiency symptoms in the veins of lower foliage during the flowering stage (Grower Facts, PanAmerican Seed, 2003) (Harbaugh, B. K. 1995. Iron toxicity in Pentas lanceolata. HortTechnology 5(4):306-307). | ||
| Honors: | Best-of-class (BC). We select the best performer in each class, based on the "overall rating". This rating may not be high, if the class does not perform well; also, the rating may not be significantly different from one or more members of the class. If two or more members of a class received the same overall rating, we used another rating to determine BC. If only one cultivar was entered in a class, it automatically becomes uncontested BC. See "Research Papers" detailed information. In addition to BC, other "honors" received for these cultivars maybe added to BC at a later date, time permitting. Seed companies may forward these honors (awards) to Rick Kelly. |
| Rating System: | Foliage and flower ratings are combined to generate the "overall rating" listed below for each cultivar within its class. The rating is a 1 to 7 scale: 7- all foliage and flowers free from defects; 4- average foliage and flower condition, minimal plant defects or pest damage to tissue, but still acceptable; 1- foliage and/or flowers with severe defects and/or severely infested with pests and damage unacceptable, making plant undesirable. Plant death due to soilborne pests may be factored into the overall rating, if it is a significant problem. Refer to "Research Papers" for details. Generally, ratings with an "a" are the best in a class. If cultivars share the same letters, those ratings are considered to be similar to each other. If there are no letters, there is only one cultivar in a class or all the members of a class have similar ratings. |
| Note: data and pictures are still being inserted. Plot numbers are temporarily inserted into the "honors" cell to more easily match up new photographs with the correct cultivar. Best of class listings are from the previous year, until trial data is analyzed. |
| Seed was sown [date] and transplants set in the fields on [date]. |
|
Rose (dark) class |
|
Date: |
29 April (week 121) |
13 May (week 14) |
30 May (week 16) |
|
|
|
'Butterfly Deep Rose' |
|
Plot B
Plot C |
Plot B
Plot C |
|
|||
|
|
|||||||
| Cultivar No: 72 |
|
|
Seed Sowing Date |
Flower Diameter2 |
Days to First Flower3 |
Overall Foliage/Flower Rating4 |
Overall Pest Rating5 |
Overall Performance Rating6 |
| 10 Feb. | 1.8 | 82 | 5.2 | 4.2 | 4.7 |
| Honors: Best-of-class, uncontested. |
| Comments: As with several other susceptible species, plants succumbed to crown rot. For detailed information, refer to Articles, Papers & Reports, when the report is posted. |
| 1. The number of weeks from seed sowing to the date the plant was photographed. Photographs were taken in a field sprayed on demand as needed, after scouting for pests, and a field that is not sprayed at all. |
| 2. Measured in centimeters and inches [cm (inches)]. |
| 3. Average number of days from sowing to unfurling of the first flower in the plots. |
| 4. The average of the combined foliage and flower data in the sprayed field as an expression of cultivar quality. |
| 5. The average of the combined foliage and flower data in the unsprayed field as an expression of arthropod and disease symptoms. |
| 6. The average of the combined overall foliage/flower rating and overall pest rating. If plant death from a soilborne pathogen resulted, this was factored into the rating. See Articles, Papers & Reports for further explanation in the reports. |
| GCREC-HOME | ORNAMENTALS RESEARCH PROGRAMS | ||
| Back to the Top | Back to Crop List | ||
