1. Bentazon Selectivity in Hot Pepper (Capsicum chinense) and Sweet Pepper (Capsicum annuum)
- Author
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David M. Peele, Thomas J. Monaco, and Aurora M. Baltazar
- Subjects
0106 biological sciences ,Chlorosis ,biology ,Bentazon ,04 agricultural and veterinary sciences ,Plant Science ,Hill reaction ,biology.organism_classification ,01 natural sciences ,Capsicum chinense ,010602 entomology ,chemistry.chemical_compound ,Horticulture ,Capsicum annuum ,chemistry ,Shoot ,Pepper ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Phytotoxicity ,Agronomy and Crop Science - Abstract
The susceptibility of sweet pepper (Capsicum annuumL. ‘Keystone Resistant Giant’) and tolerance of hot pepper (Capsicum chinenseL. ‘Bohemian Chili’) to bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide] was demonstrated under greenhouse and field conditions. Sweet pepper growth and fruit production were inhibited by foliar applications of bentazon at rates of 0.6 to 6.7 kg ai/ha. Severity of injury increased with application rate. Injury symptoms in sweet pepper were leaf chlorosis, with necrosis and death of shoot apices. Foliar applications of bentazon to hot pepper resulted in little or no injury. Bentazon inhibited Hill reaction activity of isolated chloroplasts from both species to a similar extent, suggesting that selectivity of this compound in hot pepper is not due to resistance at the chloroplast level.
- Published
- 1984
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