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http://dx.doi.org/10.5660/WTS.2014.3.3.225

Phytotoxicity of Whole Crop Forage Rice to Benzobicyclon  

Yang, Woonho (National Institute of Crop Science, RDA)
Shon, Jiyoung (National Institute of Crop Science, RDA)
Kim, Junhwan (National Institute of Crop Science, RDA)
Jung, Hanyong (National Institute of Crop Science, RDA)
Ahn, Eok-Keun (National Institute of Crop Science, RDA)
Kim, Bo-Kyeong (National Institute of Crop Science, RDA)
Park, Tae-Seon (National Institute of Crop Science, RDA)
Yoon, Young-Hwan (Chungcheongnamdo Agricultural Research & Extension Services)
Publication Information
Weed & Turfgrass Science / v.3, no.3, 2014 , pp. 225-231 More about this Journal
Abstract
Benzobicyclon induces phytotoxicity to Tongil type rice, although it is an efficient herbicide in paddy. This study was performed to figure out the benzobicyclon-induced phytotoxicity responses of whole crop forage rice genotypes that have the genetic background similar to Tongil type rice, under wet-seeded and transplanted conditions. Mogwoo demonstrated whitening symptom at all the temperatures in both wet-seeding and transplanting by the application of standard and double rates of benzobicyclon. Nokyang, Mogyang and Suweon560 exhibited no or negligible whitening and their plant heights were not reduced at standard rate of benzobicyclon. But in double rate application in wet-seeding, the three genotypes showed 0-8% of white plants at all temperature treatments and reduction in plant height was comparatively larger at $27^{\circ}C$. In transplanting, the double rate application of benzobicyclon at 24 and $27^{\circ}C$ induced 0-32% of whitening plants depending on genotypes while no whitening plants were observed at 18 and $21^{\circ}C$ in all genotypes. Reduction in biomass by double rate of benzobicyclon at 24 and $27^{\circ}C$ was greater than at 18 and $21^{\circ}C$. It is concluded that Mogwoo is extremely sensitive to benzobicyclon and Nokyang, Mogyang and Suweon560 are tolerant to the standard rate of benzobicyclon.
Keywords
Benzobicyclon; Phytotoxicity; Whole crop forage rice;
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Times Cited By KSCI : 8  (Citation Analysis)
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