Effect of temperature and cultivar on the response of broccoli and collard (Brassica oleracea) to oxyfluorfen

Growth chamber studies were conducted to investigate the effect of temperature, cultivar, and leaf wax content on the response of broccoli and collard to oxyfluorfen. Broccoli cultivars grown under cool temperatures (15/10 C) were more susceptible to preemergence (PRE) application of oxyfluorfen, an...

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Bibliographic Details
Published in:Weed technology 1999-10, Vol.13 (4), p.726-730
Main Authors: Harrison, H.F, Peterson, J.K
Format: Article
Language:English
Subjects:
air temperature
application timing
Biological and medical sciences
biological resistance
Brassica oleracea
brassica oleracea var. acephala
Brassica oleracea var. italica
Broccoli
Cabbages
Chemical control
Cole vegetables
Crop science
cultivars
Fundamental and applied biological sciences. Psychology
genetic variation
herbicide resistance
Leaves
Linear regression
oxyfluorfen
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
Phytotrons
Plants
Waxes
Weed control
Weeds
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Summary:Growth chamber studies were conducted to investigate the effect of temperature, cultivar, and leaf wax content on the response of broccoli and collard to oxyfluorfen. Broccoli cultivars grown under cool temperatures (15/10 C) were more susceptible to preemergence (PRE) application of oxyfluorfen, and broccoli and collard cultivars grown at cool temperatures were more susceptible to postemergence (POST) application of oxyfluorfen than cultivars grown under warm temperatures (25/20 C). Differences between the tolerant cultivar 'Pinnacle' and the susceptible cultivar 'Packman' in response to PRE oxyfluorfen application were more distinct at warm temperatures than at cool temperatures. Although the broccoli and collard cultivars used in the POST study varied in leaf wax content, differences in wax content did not appear to be as important as other genetic factors in the differential response to POST oxyfluorfen application between cultivars.
ISSN:0890-037X
1550-2740
DOI:10.1017/s0890037x00042135